solar power

U.S. Inflation Reduction Act: Impacts on Renewable Energy

Posted on by abrahamwien18

New law supports more predictable and consistent policies for solar, wind and other renewable energy and storage developers.


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The signing of the U.S. Inflation Reduction Act (IRA) — enacted into law on Aug. 16, 2022 — heralds significant and long-term changes for renewable energy development and energy storage installations. The new law represents the single largest climate-related investment by the U.S. government to date, allocating $369 billion (USD) for energy and climate initiatives to help transition the U.S. economy toward more sustainable energy resources.

According to industry estimates, the IRA stands to more than triple U.S. clean energy production, which would result in about 40% of the country’s energy coming from renewable sources such as wind, solar and energy storage by 2030. This would mean an additional 550 gigawatts of electricity generated via renewable sources in less than 10 years.

The IRA’s expected impacts present significant opportunities for renewable energy developers and energy storage companies. Below, we discuss the law’s key effects on the renewable and storage industries, with a special focus on critical technology, software and advisory support for companies launching or expanding their renewable energy projects as the new law takes effect.

More reliable tax credit structures likely to transform renewable energy development

Crucially, the IRA establishes long-term energy tax credit structures to support renewable energy development, giving companies a more stable 10-year window for such incentives versus the previous on-again, off-again incentives that drove “boom and bust” cycles of renewables projects.

Renewables industry trade group American Clean Power reports that for the second quarter of 2022, more than 32 gigawatts of renewable energy projects were delayed, and new project development and installations also fell to their lowest levels since 2019. The group attributes these slumping performance statistics to uncertainty in tax and incentive policies along with transmission challenges and trade restrictions; provisions of the IRA may help reverse this performance trajectory.

“Historically, the U.S. renewables industry has relied on tax credits that required reauthorization from Congress every few years, which created boom-bust cycles and significant challenges in terms of planning for long-term growth,” explained Gillian Howard, global director of sustainable energy and infrastructure at UL Solutions. She added that the IRA establishes a 10-year policy in terms of tax credits for wind, solar and energy storage projects. The new law also provides incentives for green hydrogen, carbon capture, U.S. domestic energy manufacturing and transmission, Howard noted.

“We expect the IRA to both significantly accelerate and increase the deployment of new renewable energy projects in the U.S. over the next decade,” Howard says. “This will be transformational.”

Standalone storage now eligible for tax credits: a long-awaited change and major IRA impact

The use of energy storage has taken on added urgency in recent years as extreme weather and geopolitical issues increasingly challenge energy access and reliability. Projects for energy storage, including batteries and thermal and mechanical storage, have previously been included in investment tax credit programs. Now the IRA extends tax credits for energy storage through 2032. The new law also opens tax credit eligibility to standalone energy storage, which entails storage units constructed and operated independently of larger energy grids.

“Providing an investment tax credit for standalone storage is the single-most important policy change in the IRA — period,” said David Mintzer, energy storage director at UL Solutions. “This one change sets up all of the other energy storage advantages gained from the new law. Those of us in the BESS industry have been waiting for this to happen for more than 10 years, and this is the most significant legislation to accelerate the transition to clean energy and smart grids.”

Mintzer noted that the IRA allows placement of battery energy storage systems (BESSs) where energy demand is highest and removes longstanding requirements that storage systems must be paired to solar sources. Accordingly, key impacts of the new law on energy storage projects in the U.S. will likely include the following near-term impacts:

  • Standalone utilities – The IRA provides more substantial economic incentives for more sites (nodes) that connect to grid networks in support of wholesale energy and additional dispatch services.
  • Standalone distributed generation – More flexible placement of standalone BESSs can support economic arguments for commercial development at sites with inadequate access to larger energy grids.
  • Storage technologies – The IRA’s tax credit provisions for standalone energy storage will prompt research and development and, ultimately, the execution of more and different types of batteries.
  • Banking – Smaller banks and lending organizations may be more likely to finance the construction and development of smaller energy storage systems versus larger and costlier main-grid projects.

“This decoupling of the storage-solar rules will enable BESS sites to be placed where they can provide the best economic returns,” Mintzer explained, adding that battery use will also become more flexible to better support energy grids. Ultimately, Mintzer said, developing and deploying more storage systems will help the U.S. achieve its clean energy goals.

Solar provisions: PTC versus ITC

The IRA includes provisions for 100% production tax credits (PTC) for solar, which transitions to a technology-neutral PTC in 2025. Until the passage of the IRA, solar developers could use the investment tax credit (ITC), which was originally set at 30% of eligible project costs, stepping down over the last few years to 26%, 22% and 0%. The IRA reset the ITC to 30% and provides an option for developers to opt for the PTC instead of the ITC. Rubin Sidhu, director of solar advisory services at UL Solutions, said, “Preliminary analysis shows that for projects with a high net capacity factor (NCF), PTC may be a more favorable option. Further, as solar equipment costs continue to decrease and NCFs continue to go up with better technology, PTC will be more favorable compared to ITC for more and more projects.”

Since the PTC is tied to actual energy generation by a project over 10 years, we expect the investors will be more sensitive to the accuracy of pre-construction solar resource and energy estimates, as well as the ongoing performance of projects.

Tools to support renewable energy development and storage in the IRA era

Launching renewable energy development and storage projects under the auspices of the IRA will require robust tools and technologies in order to manage these projects’ technical, operational and financial components in what may well become a more highly competitive and crowded field.

The degree to which a renewable energy developer will require third-party technologies and advisory partnerships will depend on the firm’s internal resources and commercial goals. Our experience at UL Solutions assessing more than 300 gigawatts worth of renewable energy projects has been that some firms require tools to evaluate and design projects themselves, while other companies seek full-project advisory support. To accommodate a diverse array of technology and advisory needs across the industry, UL Solutions has developed products and services, including:

  • Full energy and asset advisory services.
  • Due diligence support.
  • Testing and certification.
  • Software applications for solar, wind, offshore wind and energy storage projects.

Effective tools for early-stage feasibility and pre-construction assessments are crucial for the long-term viability of renewable energy development projects. UL Solutions provides modeling and optimizing tools for hybrid power projects via our Hybrid Optimization Model for Multiple Energy Resources (HOMER®) line of software, including HOMER Front for technical and economic analysis of utility-scale standalone and hybrid energy systems, HOMER Grid for cost reduction and risk management for grid-connected energy systems, and HOMER Pro for optimizing microgrid design in remote, standalone applications. UL Solutions also supports wind energy assessment projects with our Windnavigator platform for site prospecting and feasibility assessments, Windographer software for wind data analytics and visualization support, and Openwind wind farm modeling and layout design software.

For energy storage system developers, HOMER Front also features tools to design and evaluate battery augmentation plans as well as dispatch strategies, applicable when participating in merchant energy markets or contracting with power purchase agreements.

Conclusion: Reliable tools for a new frontier

Given the magnitude and scope of the IRA, it will take some time for regulatory implementation to play out. Effects of the new law will not be immediate. Over time, the IRA will provide more predictability and certainty in terms of tax credits and related incentives for renewable energy development and lays the groundwork for innovation and expansion of energy storage systems and technologies. Gaining a competitive advantage in this new era for renewables, nonetheless, will require the right software capabilities, third-party advisory support or both, depending on companies’ resources and commercial objectives.

A faster energy transition could mean trillions of dollars in savings

Posted on by abrahamwien18

Decarbonization may not come with economic costs, but with savings, per a recent paper.

By Grace Donnelly
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If forecasters predicting future costs of renewable energy were contestants on The Price Is Right, no one would be making it onstage.

Projections about the price of technologies like wind and solar have consistently been too high, leading to a perception that moving away from fossil fuels will come at an economic cost, according to a recent paper published in Joule.

“The narrative that clean energy and the energy transition are expensive and will be expensive—this narrative is deeply embedded in society,” Rupert Way, a study coauthor and postdoctoral researcher at the University of Oxford’s Institute for New Economic Thinking and at the Smith School of Enterprise and the Environment, told Emerging Tech Brew. “For the last 20 years, models have been showing that solar will be expensive well into the future, but it’s not right.”

The study found that a rapid transition to renewable energy is likely to result in trillions of dollars in net savings through 2070, and a global energy system that still relies as heavily on fossil fuels as we do today could cost ~$500 billion more to operate each year than a system generating electricity from mostly renewable sources.

Way said the authors were ultimately trying to start a conversation based on empirically grounded pathways, assuming that cost reductions for these technologies will continue at similar rates as they have in the past.

“Then you get this result that a rapid transition is cheapest. Because the faster you do it, the quicker you get all those savings feeding throughout the economy. It kind of feels like there’s this big misunderstanding and we need to change the narrative,” he said.

Expectation versus reality

Out of 2,905 projections from 2010 to 2020 that used various forecasting models, none predicted that solar costs would fall by more than 6% annually, even in the most aggressive scenarios for technological advancement and deployment. During this period, solar costs actually dropped by 15% per year, according to the paper.

The Joule paper took historical price data like this—but across renewable energy tech beyond just solar, including wind, batteries, and electrolyzers—and paired it with Wright’s Law. Also known as the “learning curve,” the law says costs will decline by a certain percentage as effort and investment in a given technology increase. In 2013, an analysis of historical price data for more than 60 technologies by researchers at MIT found that Wright’s Law most closely resembled real-world cost declines.

The researchers used this method to determine the combined cost of the entire energy system under three scenarios over time: A fast transition, in which fossil fuels are largely eliminated around 2050; a slow transition, in which fossil fuels are eliminated by about 2070; and no transition, in which fossil fuels continue to be dominant.

The team found that by quickly replacing fossil fuels with less expensive renewable tech, the projected cost for the total energy system in the fast-transition scenario in 2050 is ~$514 billion less than in the no-transition scenario.

And while the cost of solar, wind, and batteries has dropped exponentially for several decades, the prices of fossil fuels like coal, oil, and gas, when adjusted for inflation, are about the same as they were 140 years ago, the researchers found.

“These clean energy techs are falling rapidly in cost, and fossil fuels are not. Currently, they’re just going up,” Way said.

Renewable energy is not only getting less expensive much faster than expected, but deployments are outpacing forecasts as well. More than 20% of the electricity in the US last year came from renewables, and 87 countries now generate at least 5% of their electricity from wind and solar, according to the paper—a historical tipping point for adoption.

Even in its slowest energy-transition scenario, the International Energy Agency forecasts that global fossil-fuel consumption will begin to fall before 2030, according to a report released last week.

Way and the Oxford team found that a fast transition to renewable energy could amount to net savings of as much as $12 trillion compared with no transition through 2070.

The paper didn’t account for the potential costs of pollution and climate damage from continued fossil-fuel use in its calculations.

“If you were to do that, then you’d find that it’s probably hundreds of trillions of dollars cheaper to do a fast transition,” Way said.

Policy and investment decisions about how quickly to transition away from fossil fuels often weigh the long-term benefits against the present costs. But what this paper shows, Way said, is that a rapid transition is the most affordable regardless.

“It doesn’t matter whether you value the future a lot, or a little, you still should proceed with a fast transition,” he said. “Because clean energy costs are so low now, and they’re likely to be in the future, we can justify doing this transition on economic grounds, either way.”

A Hydrogen-Powered Boat Is Sailing The World. If Not In Cars, Do Boats Make Sense?

Posted on by abrahamwien18

Written By: Brad Templeton
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The Energy Observer, a French solar/hydrogen/wind boat, visits San Francisco
 
BRAD TEMPLETON

Recently the French originated demonstration boat the Energy Observer stopped for a visit to San Francisco, on its way around the world, having come from the Galapagos and on its way to Hawai`i. The boat uses solar power, hydrogen and battery energy storage and a small amount of high-tech wind.

On board are 200 square meters of solar panels, 1500kg of batteries, tanks for 63kg of hydrogen (good for 1MWH of electricity and another 1MWH of heat) along with electric motors, solid computer-controlled “ocean wing” sails and a desalinator and hydrogen generator to refuel the hydrogen tanks. It travels only 5mph without wind, though can do more — and even regenerate electricity — when the winds get strong enough.

Using renewable wind power to move ships is of course a very ancient technique, and it’s well understood and efficient. Sailing ships have issues when becalmed, and in sailing in narrow channels, but otherwise it’s not clear this ship is a better idea than a sailboat with a small motor system. It is more to demonstrate and play with technologies, and the operators are reluctant to give concrete numbers on costs. That’s unfortunate because any story about energy is vastly reduced in meaning without examination of the economics — even if it’s the future promised economics rather than today’s. Indeed, inattention to economics has led to some really stupid renewable energy projects and even some very stupid laws. Nonetheless, the ship is a cool project, even if it doesn’t deliver information as meaningful as it should.

Hydrogen is a controversial energy storage fuel. It’s not an energy source, but rather a competitor for things like lithium batteries. Many had high hopes for it in cars, but for now it has lost the battle to batteries. Toyota sells the Mirai hydrogen vehicle in very small numbers, but with only a few filling stations available, and the hydrogen coming from fossil fuels, it’s not clear why anybody buys one. Hydrogen’s advantages such as weight and refuel time (when there aren’t any stations) aren’t very powerful in a car compared to its disadvantages — higher cost for fuel and fuel cells, offering less than 50% efficiency, having no refueling infrastructure, non-green sourcing, bulky tanks and much more. Some of those can be fixed, but others are difficult.

This has left us to investigate hydrogen in other areas — large vehicles like trucks and buses, aircraft (where weight is hugely important) and now, ships. There is also research on grid storage, though the low efficiency of conversion is a sticking point. The greatest promise is in aircraft. Hydrogen is actually the best fuel around in terms of energy per kg, but at present storing a kg of hydrogen requires 5 to 12kg of tank, which eliminates a lot of that — but even at that poor ratio it still wins in aircraft.

Hydrogen tanks in hulls use 350 atmospheres of pressure.
 
BRAD TEMPLETON

In a ship, the Energy Observer crew believe that batteries would weigh more than 10 tons. While they don’t say the weight of their H2 system, it probably is more in the range of a ton. Weight is not quite as crucial for ships but that much extra weight comes at a cost. In addition, the EO reduces the waste of fuel cells by making use of the excess heat to provide heat on the ship. Normally the total cycle of hydrogen as storage is less than 50% efficient, which is not good when batteries can deliver 90% or more. Heat though, is certainly needed for a passenger vessel at sea. A cargo vessel might not need so much.

The ship uses up the H2 in operation when there is no wind. The H2 recharges the batteries and provides heat, then the batteries run all systems. With enough wind, the solar panels can instead recharge the batteries and make new H2 using desalinated water and electrolysis. Their goal is to not use any net H2 on a typical day, but if winds and sun are poor, they will use it up, but plan their missions to leave with enough H2 to handle such situations. While docked, the panels and shore power build up the H2, or in theory, they might some day find H2 refilling at a “hydrogen marina.” When they left for Hawai`i from San Francisco, they only filled the H2 tank partially because they did not need it all the way full.

Every surface is covered with solar panels. The wing/sails are down, a computer driven motor handles them
 
BRAD TEMPLETON
 

The ship used to be a racing catamaran, but instead of sails it has two “ocean wing” fixed-shape sails. These solid wings can generate as much thrust as cloth sails twice their size. They are small, to not block the sun, but they are also computer controlled, allowing them to be used without much crew effort or requiring any skill. When the wind is really strong, the propellers and motors can spin in reverse to generate electricity to build up more H2. Full sized sails would do better though, and could be put up at night with no risk of blocking the sun. They seem to have shied away from traditional sail and wind power in spite of their well established value. Before they had the ocean wings, they tried installing wind turbines, which failed for obvious reasons.

Life on board is spartan. The catamaran’s cabin is small for a crew of 8. Also on board is a small science sub-crew taking the opportunity to study the oceans and wildlife on such an unusual voyage.

A ship has the space for H2 tanks and the ability to generate it, so this can make sense. I don’t think a future vessel would look like the Energy Observer, but hybrids of electric drive and traditional sail, adding what solar power can be had make sense. Every inch of the deck is solar panels, and there are even panels to get the sunlight reflecting off the water. As panels get cheap this makes sense, though you don’t want to forgo useful sails because of the shade they will cast if the wind will give you more than the sun.

It’s possible to foresee solar/wind/electric recreational boats. Operating recreational boats is highly polluting and expensive. Sailboats are clean and cheap but a lot of work and under many limitations. A hybrid, using electric power, could be an answer there, as well as an answer for the big cargo ships.

What next for Hydrogen?

Hydrogen may not power cars, but it has some chance at other vehicles that want to avoid burning fossil fuel:

  • Aircraft care immensely about weight. Batteries today can give only modest range to electric aircraft. It’s either H2 or synthetic/biofuel hybrid power trains there.
  • One special type of aircraft is quite interesting, the airship. While people have been scared of H2 there since the Hindenberg, it’s important to realize that H2 can be more than a lift gas, it can be the power fuel. It’s the only fuel that has negative weight, and you don’t need to pressurize it with big heavy tanks in an airship.
  • Trucks are looking at H2 because the battery weight for a truck takes up a large part of their 40 ton limit, and trucks have a harder time stopping for long enough to charge it. The 50% energy loss is trouble, but the weight limit is a legal requirement.
  • Grid storage with over 50% loss is a serious problem. But with H2, if you want more capacity, you just need more tanks. Doubling the tanks doesn’t double the cost, but doubling batteries does double the cost.

Other types of energy storage are not standing still, though. There are experiments with newer batteries, flywheels, aluminum, synthetic hydrocarbon fuels and more underway. It’s a space ripe for change.

Israel Completes World‘s Largest Solar & Thermal Electric Facility

Posted on by abrahamwien18

By David Lazarus
View the original article here.

The state-of-the-art thermal electric power plant in Israel’s Negev Desert is equipped with more than 50,000 computer-controlled heliostats that produce enough power for 150,000 homes, keeping 110,000 tons of CO2 emissions out of the air per year.

The Ashalim solar and thermal electric power plant in Israel’s Negev Desert is up and running. The state-of-the-art facility is equipped with more than 50,000 computer-controlled heliostats or mirrors, which can track the sun in two dimensions and reflect the sunlight onto a boiler placed on top of a tower measuring 240 m-high (787.4 ft). That’s higher than some of the tallest sky scrapers in the world and by far the tallest solar tower ever built.

How does it work? All those tens of thousands of mirrors are hooked up to a computer operated tracking system so that they all move precisely with the orbit of the earth around the sun throughout the day and direct the heat from the sunlight to a spot on the boiler on top of the tower to within 0.0015499969 of an inch. The super hot water in the boiler produces superheated steam, which is then conveyed through pipes down below with enough pressure to spin a steam turbine-generator at astronomical speeds needed to produce electricity. The solar run generator can put out 300 megawatts of clean electricity every day, or enough to power about 150,000 homes.

Ashalim construction in 2016 – BrightSource Energy website

Ashalim construction in 2016 – BrightSource Energy website

Another feature of the Ashalim project is the use of solar thermal technology that can store energy for use at night in order to provide consistent and reliable output of electricity. This is one of the largest renewable energy projects in the world. The facility covers an area of over 3 sq. km (2 sq. miles).

Israel’s climate is ideal for solar power, particularly in the Negev which enjoys more than 300 sunny days a year. Israel has been home to many solar technology breakthroughs, but the government has been slow in getting away from using fossil fuels for power. But that is definitely starting to change with a goal getting 10 percent of its energy needs from renewable sources by 2020 with the new solar project. Once the project is proven fully successful, Israel plans to move ahead rapidly towards renewable energy sources.

Together with the recent discovery of huge deposits of natural gas along Israel’s Mediterranean Coast, the Ashalim plant will contribute to Israel’s security by reducing dependence on fossil fuel imports. It will also keep us safe by keeping 110,000 tons of CO2 emissions per year out of the air we breathe.

Solar Energy Isn’t Just for Electricity

Posted on by abrahamwien18

It can also provide carbon-free heat for a wide variety of industrial processes

By Steven Moss
View the original article here.

Part of the Miraah soler thermal project in Oman. Credit: GlassPoint Solar

Part of the Miraah soler thermal project in Oman. Credit: GlassPoint Solar

The industrial processes that underpin our global economy—manufacturing, fuel and chemical production, mining—are enormously complex and diverse. But they share one key input: they, as well as many others, require heat, and lots of it, which takes staggering amounts of fuel to produce. Heat and steam generation is critical to the global economy, but it’s also an overlooked and growing source of greenhouse gas (GHG) emissions.

The good news is that innovative solar technologies can produce steam at industrial scale—reducing emissions and, increasingly, cutting costs. And given the current climate outlook, it’s urgent that industry adopt these new technologies.

Despite enormous progress around the world to ramp up renewables and increase energy efficiency, global GHG emissions reached an all-time highin 2018. In a report released in January, the Rhodium Group found that even though renewable energy installations soared and coal plants shut down, carbon emissions in the U.S. rose sharply last year. Emissions from industry shot up 5.7 percent—more than in any other sector, including transportation and power generation. The authors of the Rhodium Group study concluded that despite increased efforts from policymakers and the business to tackle emissions, “the industrial sector is still almost entirely ignored.”

This must change, at the global level. Worldwide industry is responsible for a quarter of total emissions. And while those from transportation and residential segments are trending down, the International Energy Agency (IEA) projects that industrial emissions will grow some 24 percent by 2050.

As people around the world continue to transition from living off the land to moving to cities and buying and consuming more things, industrial activity will continue to increase—and the need to reduce corresponding emissions will become all the more urgent.

Credit: GlassPoint Solar

Credit: GlassPoint Solar

This brings us back to heat. Industry is the largest consumer of energy, and a surprising 74 percent of industrial energy is in the form of heat, mostly process steam. Solar steam—making the sun’s heat work for industry—is a largely unexplored but promising avenue for reducing emissions.

While photovoltaic (PV) panels that convert sunlight into electricity are more common, thermal solutions are what’s needed to meet industry’s growing demand for heat. In a solar thermal system, mirrors focus sunlight to intensify its heat and produce steam at the high temperatures needed for industry. Another key advantage is the ability to store the heat using simple, proven thermal energy storage in order to deliver steam 24 hours a day, just like a conventional fossil fuel plant. With the right technology, solar thermal can be a reliable, efficient and low-cost energy source for industrial steam generation.

So-called "enclosed trough technology" uses sunshine to produce zero-carbon steam. Credit: GlassPoint Solar.

So-called “enclosed trough technology” uses sunshine to produce zero-carbon steam. Credit: GlassPoint Solar.

For example, renewable process heat provider Sunvapor is partneringwith Horizon Nut to build a 50-kilowatt solar thermal installation at a pistachio processing facility in the Central Valley of California. The companies are working to expand solar steam production for food industry processes, such as pasteurization, drying and roasting.

In Oman and California, GlassPoint Solar is operating and developing some of the world’s largest solar projects for industry. GlassPoint’s greenhouse-enclosed mirrors track the sun throughout the day, focusing heat on pipes containing water. The concentrated sunlight boils the water to generate steam, which is used by Oman’s largest oil producer to extract oil from the ground. The capacity of GlassPoint’s Miraah plant, which can currently deliver 660 metric tons of steam every day, will top 1 gigawatt of solar thermal energy when completed. This same technology is also being deployed in California to reduce emissions from one of the country’s largest and oldest operating oilfields.

Meanwhile, to meet the needs of extremely high-temperature (800-1,000degreesC) industrial processes, the European Union is developing SOLPART, a research project to develop solar thermal energy that can be used to produce cement, lime and gypsum.

While fossil fuels remain the dominant source of heat for industry across all sectors and regions, industry is beginning to explore cleaner alternatives—and in some cases, industry is leveraging solar steam on a significant scale. As technology advances, more and more companies will find that switching to solar steam can simultaneously reduce costs and emissions, improving business operations while shrinking its carbon footprint.

When it comes to mitigating climate change, most attention has been directed to the things we see, buy, or use on a daily basis—the cars we drive, the food we eat, the power plants that keep our lights on. But behind all these activities is process heat, an emissions source that has been largely ignored.

Now we must turn our attention to industry—the sleeping giant of climate action. Process heat is an overlooked opportunity to slash GHG emissions, and solar technologies operating at the scale needed by industry are currently available. It’s time to embrace them and stop industrial heat from heating up our planet.

Solar farms in space could be renewable energy’s next frontier

Posted on by abrahamwien18

space-based-solar-array-concept

Space-based solar power is seen as a uniquely reliable source of renewable energy. NASA / Artemis Innovation Management Solutions LLC

China wants to put a solar power station in orbit by 2050 and is building a test facility to find the best way to send power to the ground.

By Denise Chow and Alyssa Newcomb
View the original article here.

As the green enery revolution accelerates, solar farms have become a familiar sight across the nation and around the world. But China is taking solar power to a whole new level. The nation has announced plans to put a solar power station in orbit by 2050, a feat that would make it the first nation to harness the sun’s energy in space and beam it to Earth.

Since the sun always shines in space, space-based solar power is seen as a uniquely reliable source of renewable energy.

“You don’t have to deal with the day and night cycle, and you don’t have to deal with clouds or seasons, so you end up having eight to nine times more power available to you,” said Ali Hajimiri, a professor of electrical engineering at the California Institute of Technology and director of the university’s Space Solar Power Project.

Of course, developing the hardware needed to capture and transmit the solar power, and launching the system into space, will be difficult and costly. But China is moving forward: The nation is building a test facility in the southwestern city of Chongqing to determine the best way to transmit solar power from orbit to the ground, the China Daily reported.

REVISITING AN OLD IDEA

The idea of using space-based solar power as a reliable source of renewable energy isn’t new. It emerged in the 1970s, but research stalled largely because the technological demands were

thought to be too complex. But with advances in wireless transmission and improvements in the design and efficiency of photovoltaic cells, that seems to be changing.

“We’re seeing a bit of a resurgence now, and it’s probably because the ability to make this happen is there, thanks to new technologies,” said John Mankins, a physicist who spearheaded NASA efforts in the field in the 1990s before the space agency abandoned the research.

Population growth may be another factor driving the renewed interest in space-based solar power, according to Mankins. With the world population expected to swell to 9 billion by 2050, experts say it could become a key way to meet global energy demands — particularly in Japan, northern Europe and other parts of the world that aren’t especially sunny.

“If you look at the next 50 years, the demand for energy is stupendous,” he said. “If you can harvest sunlight up where the sun is always shining and deliver it with essentially no interruptions to Earth — and you can do all that at an affordable price — you win.”

MAKING IT A REALITY

Details of China’s plans have not been made public, but Mankins says one way to harness solar power in space would be to launch tens of thousands of “solar satellites” that would link up to form an enormous cone-shaped structure that orbits about 22,000 miles above Earth.

The swarming satellites would be covered with the photovoltaic panels needed to convert sunlight into electricity, which would be converted into microwaves and beamed wirelessly to

ground-based receivers — giant wire nets measuring up to four miles across. These could be installed over lakes or across deserts or farmland.

Mankins estimates that such a solar facility could generate a steady flow of 2,000 gigawatts of power. The largest terrestrial solar farms generate only about 1.8 gigawatts.

If that sounds promising, experts caution that there are still plenty of hurdles that must be overcome — including finding a way to reduce the weight of the solar panels.

“State-of-the-art photovoltaics are now maybe 30 percent efficient,” said Terry Gdoutos, a Caltech scientist who works with Hajimiri on the space-based solar research “The biggest challenge is bringing the mass down without sacrificing efficiency.”

For its part, the Caltech team recently built a pair of ultralight photovoltaic tile prototypes and showed that they can collect and wirelessly transmit 10 gigahertz of power. Gdoutos said the prototypes successfully performed all the functions that real solar satellites would need to do in space, and that he and his colleagues are now exploring ways to further reduce the weight of the tiles.

THE ROAD AHEAD

China hasn’t revealed how much it’s spending to develop its solar power stations. Mankins said that even a small-scale test to demonstrate the various technologies would likely cost at least $150 million, adding that the swarming solar satellites he envisions would cost about $10 billion apiece.

Despite its exorbitant price tag, Mankins remains a staunch advocate of space-based solar power.

“Ground-based solar is a wonderful thing, and we’ll always have ground-based solar,” he said. “For a lot of locations, rooftop solar is fabulous, but a lot of the world is not like Arizona. Millions of people live where large, ground-based solar arrays are not economical.”

Mankins hailed recent developments in the field and said he is keen to follow China’s new initiative. “The interest from China has been really striking,” he said. “Fifteen years ago, they were completely nonexistent in this community. Now, they are taking a strong leadership position.”

The Price of Large-Scale Solar Keeps Dropping

Posted on by abrahamwien18

JOHN ROGERS, SENIOR ENERGY ANALYST, CLEAN ENERGY | SEPTEMBER 13, 2018, 11:49 AM EST
View the original article here.

PV modules at the Kerman site near Fresno, California
The latest annual report on large-scale solar in the U.S. shows that prices continue to drop. Solar keeps becoming more irresistible.

The report, from Lawrence Berkeley National Laboratory (LBNL) and the US Department of Energy’s Solar Energy Technologies Office, is the sixth annual release about the progress of “utility-scale” solar. For these purposes, they generally define “utility-scale” as at least 5 megawatts (three orders of magnitude larger than a typical residential rooftop solar system). And “solar” means mostly photovoltaic (PV), not concentrating solar power (CSP), since PV is where most of the action is these days.

Here’s what the spread of large-scale solar looks like:

Solar Drop 2

In all, 33 states had solar in the 5-MW-and-up range in 2017—four more than had it at the end of 2016. [For a cool look at how that map has changed over time, 2010 to 2017, check out this LBNL graphic on PV additions.]

Watch for falling prices

Fueling—and being fueled by—that growth are the reductions in costs for large-scale projects. Here’s a look at power purchase agreements (PPAs), long-term agreements for selling/buying power from particular projects, over the last dozen years:

Solar Drop 3

And here’s a zoom-in on the last few years, broken out by region:

Solar Drop 4

While those graphs show single, “levelized” prices, PPAs are long-term agreements, and what happens over the terms of the agreements is worth considering. One of the great things about solar and other fuel-free electricity options is that developers can have a really good long-term perspective on future costs: no fuel = no fuel-induced cost variability. That means they can offer steady prices out as far as the customer eye can see.

And, says LBNL, solar developers have indeed done that:

Roughly two-thirds of the contracts in the PPA sample feature pricing that does not escalate in nominal dollars over the life of the contract—which means that pricing actually declines over time in real dollar terms.

Imagine that: cheaper over time. Trying that with a natural gas power plant would be a good way to end up on the losing side of the contract—or to never get the project financed in the first place.

Here’s what that fuel-free solar steadiness can get you over time, in real terms:

Solar Drop 5

What’s behind the PPA prices

So where might those PPA price trends be coming from? Here are some of the factors to consider:

Equipment costs. Solar equipment costs less than it used to—a lot less. PPAs are expressed in cost per unit of electricity (dollars per megawatt-hour, or MWh, say), but solar panels are sold based on cost per unit of capacity ($ per watt). And that particular measure for project prices as a whole also shows impressive progress. Prices dropped 15% just from 2016 to 2017, and were down 60% from 2010 levels.

Solar Drop 6

The federal investment tax credit (30%) is a factor in how cheap solar is, and has helped propel the incredible increases in scale that have helped bring down costs. But since that ITC has been in the picture over that whole period, it’s not directly a factor in the price drop.

Project economies of scale. Bigger projects should be cheaper, right? Surprisingly, LBNL’s analysis suggests that, even if projects are getting larger (which isn’t clear from the data), economies of scale aren’t a big factor, once you get above a certain size. Permitting and other challenges at the larger scale, they suggest, “may outweigh any benefits from economies of scale in terms of the effect on the PPA price.”

Solar resource. Having more of the solar happen in sunnier places would explain the price drop—more sun means more electrons per solar panel—but sunnier climes are not where large-scale solar’s growth has taken it. While a lot of the growth has been in California and the Southwest, LBNL says, “large-scale PV projects have been increasingly deployed in less-sunny areas as well.” In fact:

In 2017, for the first time in the history of the U.S. market, the rest of the country (outside of California and the Southwest) accounted for the lion’s share—70%—of all new utility-scale PV capacity additions.

The Southeast, though late to the solar party, has embraced it in a big way, and accounted for 40% of new large-scale solar in 2017. Texas solar was another 17%.

But Idaho and Oregon were also notable, and Michigan was one of the four new states (along with Mississippi, Missouri, and Oklahoma) in the large-scale solar club. (And, as a former resident of the great state of Michigan, I can attest that the skies aren’t always blue there—even if it actually has more solar power ability than you might think.)

Capacity factors. More sun isn’t the only way to get more electrons. Projects these days are increasingly likely to use solar trackers, which let the solar panels tilt face the sun directly over the course of the day; 80% of the new capacity in 2017 used tracking, says LBNL. Thanks to those trackers, capacity factors themselves have remained steady in recent years even with the growth in less-sunny locales.

What to watch for

This report looks at large-scale solar’s progress through the early part of 2018. But here are a few things to consider as we travel through the rest of 2018, and beyond:

  • The Trump solar tariffs, which could be expected to raise costs for solar developers, wouldn’t have kicked in in time to show up in this analysis (though anticipation of presidential action did stir things up even before the tariff hammer came down). Whether that signal will clearly show in later data will depend on how much solar product got into the U.S. ahead of the tariffs. Some changes in China’s solar policies are likely to depress panel prices, too.
  • The wholesale value of large-scale solar declines as more solar comes online in a given region (a lot of solar in the middle of the day means each MWh isn’t worth as much). That’s mostly an issue only in California at this point, but something to watch as other states get up to high levels of solar penetration.
  • The investment tax credit, because of a 2015 extension and some favorable IRS guidance, will be available to most projects that get installed by 2023 (even with a scheduled phase-down). Even then it’ll drop down to 10% for large-scale projects, not go away completely.
  • Then there’s energy storage. While the new report doesn’t focus on the solar+storage approach, that second graphic above handily points out the contracts that include batteries. And the authors note that adding batteries doesn’t knock things completely out of whack (“The incremental cost of storage does not seem prohibitive.”).

And, if my math is correct, having 33 states with large-scale solar leaves 17 without. So another thing to watch is who’s next, and where else growth will happen.

Many of the missing states are in the Great Plains, where the wind resource means customers have another fabulous renewable energy option to draw on. But solar makes a great complement to wind. And the wind-related tax credit is phasing out more quickly than the solar ITC, meaning the relative economics will shift in solar’s favor.

Meanwhile, play around with the visualizations connected with the new release (available at the bottom of the report’s landing page), on solar capacity, generation, prices, and more, and revel in solar’s progress.

Large-scale solar is an increasingly important piece of how we’re decarbonizing our economy, and the information in this new report is a solid testament to that piece of the clean energy revolution.

Warren Buffet’s MidAmerican Energy puts in Iowa’s latest big battery project

Posted on by abrahamwien18

Grand Ridge, an existing Invenergy project that combines wind power and energy storage, in Illinois. Image: Invenergy.

Grand Ridge, an existing Invenergy project that combines wind power and energy storage, in Illinois. Image: Invenergy.

View the original article here.
The US state of Iowa got its first grid-scale solar-plus-storage system at the beginning of this year, and this has already been followed by the completion of another, larger battery project in the US state this week.

Energy-Storage.news reported last week on the completion of a solar PV system at Maharishi University of Management equipped not only with solar trackers but also with a 1.05MWh flow battery.

This week, project developer Invenergy said a four month “construction sprint” had been successfully undertaken and the company has begun commercial operations of a 1MW / 4MWh lithium iron phosphate battery energy storage system.

Located at a substation in Knoxville, Iowa, the project has been executed for utility MidAmerican Energy, one of billionaire investor Warren Buffet’s companies as a subsidiary of Berkshire Hathaway Energy. MidAmerican serves just under 800,000 electricity customers.

In a November press release, MidAmerican’s VP of resource development said the utility-scale storage system would teach lessons about “how best to use an energy storage system, and how it can serve our customers in the future,” adding that the primary purpose of the system will be to help manage peak loads on the utility’s network.

“Energy storage has the potential to allow us to retain energy when customer demand is low and release it during peak usage times. That would give us new options to manage peak loads, enhance overall reliability and help keep electric costs low and affordable for our customers,” Mike Fehr of MidAmerican Energy said.

The utility highlighted four of the main benefits of energy storage that it will explore through the application of the lithium system: flattening and managing peaks in electricity demand through storing off-peak energy for later use, reducing the required run times and capacities of natural gas peaker plants with energy storage, enhancing the value and usefulness of renewable energy through smoothing the output of solar farms before it enters the grid and improving power quality and extending the life of transformers and other grid infrastructure.

“Energy storage is still in the development stages and the economic feasibility on a larger scale is being assessed as well; however, prices are trending downward,” Mike Fehr said.

“MidAmerican Energy wants first-hand experience with the technology so we’re positioned to quickly and efficiently add it to our system in ways that benefit our customers when the price is right.”

For Invenergy, which already owns and operates four other large-scale battery systems it developed, this has been its first project as an EPC (engineering, procurement and construction) partner.

“We are excited by the new opportunities for battery storage that we are seeing around the country. We are grateful for partners like MidAmerican Energy who are seeking innovative ways to deliver value to their customers and are proud to have provided them with this solution in such a short time,” Invenergy senior VP Kris Zadlo said.

The World’s Biggest Solar Project Comes With a ‘Batteries Included’ Sticker

Posted on by abrahamwien18

By Brian Eckhouse and Mark Chediak
View the original article here.

The world’s biggest-ever solar project — a $200 billion venture in Saudi Arabia — comes with a “batteries included” sticker that signals a major shift for the industry.

SoftBank Group Corp. partnered with the oil-rich Saudis this week to plan massive networks of photovoltaic panels across the sun-drenched desert kingdom. The project is 100 times larger than any other proposed in the world, and features plans to store electricity for use when then sun isn’t shining with the biggest utility-scale battery ever made.

The daytime-only nature of solar power has limited its growth globally partly because the cost of batteries was so high. Utilities that get electricity from big solar farms still rely on natural gas-fired backup generators to keep the lights on around the clock. But surging battery supplies to feed electric-car demand have sent prices plunging, and solar developers from California to China are adding storage to projects like never before.

Cheaper Batteries

Costs are expected to drop in half by 2025 as factories ramp up battery production

“The future is pretty much hybrid facilities,’’ said Martin Hermann, the CEO of 8minutenergy Renewables LLC, a U.S. company that’s expecting to include batteries in the vast majority of the 7.5 gigawatts of solar projects it’s developing.

Affordable batteries have long been the Holy Grail for solar developers. Without them, some of the best U.S. solar markets, like California, have too much of electricity available at midday and not enough around dusk when demand tends to peak.

Wind Wins

While the solar industry has grown, it still accounts for less than 2 percent of U.S. electricity supply and has been outpaced by investments in other green technologies. Wind farms are set to overtake hydroelectric plants next year as the biggest source of renewable energy in the U.S., accounting for more than 6 percent of the nation’s electricity generating capacity, government data show.

Now, the economics of storage is shifting. The price of lithium-ion battery packs tumbled 24 percent last year, according to Bloomberg New Energy Finance, and the U.S. is allowing solar-dedicated storage to qualify for a federal tax credit. More utilities and local energy providers are mandating that new solar farms include batteries to store power.

Adding batteries to solar plants could revolutionize the industry. California has contemplated going all-renewable by 2045. It won’t be able to do that without storage, said Kevin Smith, chief executive officer of SolarReserve LLC, a solar project developer that uses molten-salt energy-storage technology.

More Control

“Storage just adds control,” said Logan Goldie-Scot, a San Francisco-based energy storage analyst at BNEF. “In a number of markets, you are seeing customers seeking a greater deal of control.”

By the end of 2018, it’s possible that U.S. utilities may be asking for batteries on every solar project proposed, said Ravi Manghani, an energy analyst at GTM Research. That would mean the country is about to embark on a major battery boom. Only about 1 gigawatt of storage had been installed in the U.S. through the third quarter, according to BNEF.

Several large developers already are proposing storage units as part of their projects, including NextEra Energy Inc.

Cypress Creek Renewables LLC, which builds clean-power plants, is contemplating batteries at every one of its early-stage solar projects, according to Chief Executive Officer Matthew McGovern. The company installed batteries at 12 solar farms last year.

The shift isn’t just in the U.S.

The Saudi-SoftBank project calls for an astonishing 200 gigawatts of generating capacity that would be built over the next decade or so, with the first electricity being produced by the middle of next year. Based on BNEF data, the project would dwarf the total solar panels that the entire photovoltaic industry supplied worldwide last year.

Evening Hours

A key feature of the project will be the construction of “the largest utility-scale battery” in two to three years that will supply “evening hour” power to consumers, Masayoshi Son, SoftBank’s founder, told reporters in New York this week.

Tesla Inc., the Palo Alto, California-based carmaker that’s building batteries with Panasonic at a giant factory in Nevada, will supply the storage units for a solar project in the Australian state of Victoria. Houston-based Sunnova Energy Corp. is selling solar and battery systems in Puerto Rico, where Hurricane Maria devastated the island’s power grid in September and tens of thousands of people still don’t have electricity.

China-based Trina Solar Ltd., once the world’s largest maker of photovoltaic panels, is seeking to invest 3.5 billion yuan ($556 million) in integrated energy projects this year that could include power generation, distribution grids and storage, Vice President Liu Haipen said Wednesday in an interview in Beijing. Most of the investment will be in China, but the company is exploring opportunities in Germany, Spain, Australia and Japan, he said.

Cheaper batteries are even providing a boost in the residential market for solar systems.

“It’s a game-changer,” said Ed Fenster, executive chairman of San Francisco-based Sunrun Inc., the largest U.S. installer of residential solar systems. “The demand that we’re seeing is outstripping our expectations.”

— With assistance by Stephen Cunningham, Vivian Nereim, and Feifei Shen

Mapping the Boom in Global Solar Power

Posted on by abrahamwien18

By Molly Lempriere
View the original article here.

Solar power is growing faster than any other renewable energy in the world, according to new research by the IEA. But where in the world is the technology booming the most?

Solar is growing at speed in several states, including Utah, Arizona, and Nevada, and looks set to continue this trend through this year and beyond.

Solar is growing at speed in several states, including Utah, Arizona, and Nevada, and looks set to continue this trend through this year and beyond.