Renewable Energy

Siemens Gamesa Pursues Hybrid Wind and Solar Projects With Energy Storage

The company confirms hybrid systems are a growing focus area.

By Jason Deign
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Siemens Gamesa Pursues Hybrid Wind and Solar Projects With Energy Storage

Siemens Gamesa Pursues Hybrid Wind and Solar Projects With Energy Storage

Siemens Gamesa, the leading turbine manufacturer, is looking to go beyond wind — into hybrid systems with solar and storage.

The company’s chief technology officer, Antonio de la Torre Quiralte, told GTM that Siemens Gamesa remains committed to the wind market. However, it is increasingly interested in other technologies to reduce renewable energy intermittency.

“Following the merger about one year ago, we realized that our two former companies were quite interested in resolving the renewable problem, which is discontinuity,” he said.

“As part of our business strategy, there is a clear mandate from our CEO and our board that we will resolve, with a huge investment in new technologies, solutions for the market that will allow, quite soon, stable renewable procurement of energy.”

The development of systems that can provide baseload or near-baseload capacity could involve the hybridization of potentially complementary generation technologies such as wind and solar. But storage is a big part of the equation.

“It definitely is in our roadmap,” de la Torre said.

De la Torre said the manufacturer is focused on solutions rather than products, integrating energy storage with renewable plants at the project level.

He also said Siemens Gamesa is looking beyond today’s existing utility-scale battery storage capacities, which typically run to tens of megawatt hours, to gigawatt-hour levels of storage.

Batteries will remain the company’s technology of choice for standalone hybrid and off-grid systems, which demand storage capacities of between 500 kilowatt-hours and 50 megawatt-hours for onshore wind and PV plant balancing.

But Siemens Gamesa is also investigating a thermal storage system called the Future Energy Solution, which could boast much higher capacities. A demonstration plant currently under construction in Hamburg will be able to deliver 1.5 megawatts of power for 24 hours.

Siemens Gamesa hopes to use this kind of technology for round-the-clock renewable energy generation. “We have to integrate several renewable sources,” said de la Torre. “Currently we are investigating all relevant sorts of storage.”

Recently, for example, Siemens Gamesa started testing a 120-kilowatt, 400-kilowatt-hour redox flow battery at its La Plana test center near Zaragoza in Spain.

The test center had previously been used by Gamesa to put together a hybrid system combining traditional gensets with wind, solar and storage in 2016. Customer interest in hybrid systems with storage has grown in the last six to nine months, de la Torre said.

One example is the Bulgana Green Power Hub project owned by Neoen in Australia, where Siemens Gamesa will be acting as an engineering, procurement and construction contractor, and will be integrating a 194-megawatt wind farm with 34 megawatt-hours of Tesla storage.

Hong Zhang Durandal, a business analyst with MAKE Consulting, said Siemens Gamesa’s growing interest in hybrid systems reflects a wider trend within the wind industry. OEMs are not interested in having storage as a product, he said, but see value in adding other technologies to wind farms, for example to help avoid curtailment or smooth out imbalances.

It also makes sense for Siemens Gamesa to explore thermal or redox flow technologies for bulk, long-duration storage, he said. “For lithium-ion, getting to gigawatt-hours is just cost-ineffective,” he said. “It’s too large a system to justify the cost of the batteries.”

In a recent question-and-answer session published by Wood Mackenzie, Durandal said wind-plus-storage could offer new opportunities for energy production in the U.S.

“Wind farms paired with energy storage can shift energy from periods of low prices to take advantage of spikes and shift energy in bulk when it is most needed,” he said.

Pairing wind with energy storage also helps with ramp-rate control, can avoid curtailment and could open the door for project owners to compete for ancillary services revenues.

“We are seeing increased interest by wind turbine OEMs across the globe in exploring and developing utility-scale wind-plus-storage systems,” Durandal said. “Not only can the development of such systems strengthen the portfolio of the OEMs in key markets, [but] hybrid systems can also play a significant role in the deployment of more wind energy in the future.”

How Energy Storage Can Limit the Impact of Extreme Weather

John Jung, President & CEO, Greensmith Energy
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energy storage weather

Photo Credit: Howard Scott

Last month, the National Hurricane Center reported that Hurricane Maria, the sixth fastest hurricane on record, caused an estimated $90 billion in damage in Puerto Rico and the U.S. Virgin Islands. This would make it the third costliest hurricane in history, following Katrina and Harvey.

Now seven months later, there are still parts of Puerto Rico that are still without power. I can only imagine how this prolonged outage is making relief and recovery efforts difficult.

For those of us in the energy business, we see a better pathway for communities to avoid prolonged outages that hinder relief and recovery efforts.

One solution – already in the marketplace and in use around the world – is the combination of energy storage and islanded grid systems.

Islanded systems, also known as microgrids, can operate with or without a connection to grid. When you add energy storage, communities benefit from a more flexible, versatile distributed energy resource.

What exactly does that mean?

Traditional grid operators, without adequate energy storage, follow conservative limits on the deployment of distributed energy resources to maintain reliability.

Energy storage enables integration of more renewable energy sources so that grid systems can better respond to dynamic fluctuations in electricity consumption, and lessen greenhouse gas emissions. As solar, wind and hydro become the world’s main energy sources, renewables are no longer an incremental component in energy production.

And, renewable energy costs are the lowest ever. So, with islanding and storage combined, microgrids can safely lift limits on renewables, bringing a substantial benefit in places where electricity prices exceed the cost of electricity for renewables.

The Graciosa Hybrid Renewable Power Plant, located on the island of Graciosa in the northern part of the Azores, an autonomous region of Portugal, is a recent example of a Greensmith microgrid project that will combine solar and wind generation, together with energy storage using lithium-ion batteries. When completed, the Graciosa plant will enable 1 MW of solar and 4.5 MW of wind power to be supplied to the grid, reducing the region’s reliance on imported fossil fuels and significantly reducing GHG emissions.

Credit: Howard Scott

Credit: Howard Scott

Beyond the advanced energy storage technology Greensmith is known for, we help a growing number of power companies and developers integrate and maximize a diverse mix of grid resources using our industry-leading GEMS software platform. Our suite of proven grid-scale and microgrid energy storage solutions delivers renewables integration, reliability and resilience. In fact, more than one-third of all energy storage capacity installed in the United States is running on Greensmith’s GEMS software platform, which provides full visibility into a grid system operation and can pinpoint and isolate any malfunctions.

Faster response time means a greater chance of avoiding power outages. And, as we have seen in Puerto Rico, and the bomb cyclones that hit the northeast in March, extreme weather events were happening much more frequently across the country and the world.

The frequency of natural disasters is an important reason that more of us should look at energy storage and microgrids as a necessary infrastructure improvement for customers and utilities.

It’s clear that, while microgrids are complex systems, when deployed with energy storage solutions, they are essential to the evolution of our power grid.

Mapping the Boom in Global Solar Power

By Molly Lempriere
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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.

EMERALD SKYLINE TO DEVELOP SOLAR FARM IN SOUTHERN ARIZONA WITH RESEARCH AND DEVELOPMENT FACILITY TO PURSUE ELECTRICAL STORAGE TECHNOLOGY.

“Solar generation and electricity storage technology are rapidly evolving sustainable energy alternatives. The combination of solar power generation and electricity storage is being utilized in projects around the world”

 May 1, 2018 from Emerald Skyline Corporation

BOCA RATON, FL, May 1, 2018 – FOR IMMEDIATE RELEASE

Today, Emerald Skyline announced that it will develop land located in southern Arizona for the purpose of solar generation and electricity storage technology research. The project, Emerald City Solar, recognizes that both solar generation and electricity storage technologies are rapidly evolving and will continue to become more cost effective. The southern Arizona project will include research and development facilities to continue to evaluate new technologies as they emerge. It is expected that the total generation of the solar farm will continue to increase along with the value per kilowatt hour of the electricity generated as new technologies are deployed. Emerald Skyline believes the future of renewable energy is in the storage technology and will be exploring novel ways of delivering and storing energy. They have assembled a world-class team to conduct research and development to drive innovation and advanced sustainable technologies to manage surplus renewable power for use on demand and supply of power.

SOLAR FARM

The site of the solar farm development enjoys the best solar profile in the United States and is near major urban centers including San Diego, Los Angeles, and Phoenix. The electricity generated could be sold to the local electric power utility company at prevailing Power Purchase Agreement rates of about .07 per kilowatt hour (KwH). However, through the use of proven electric storage technology, the value of the electricity could be significantly increased through the selling into the power grid during peak demand periods at much higher spot market prices. Selling power in this manner is called Regulation Services.

ELECTRICITY STORAGE

Deployment of electricity storage is increasing at explosive rates and has been described by the Edison Electric Institute (EEI) as a game changer in the industry. Several new companies can provide large battery-based storage units and have the operating systems required to interact with the electricity grid. Through storing electricity and injecting the stored power into the grid during peak demand periods the cost of peaking power can be greatly reduced. By selling power into the grid during peak demand at much higher prices the value of the solar power farm can be greatly enhanced.

“As a sustainability and resiliency consulting and LEED project management firm, this partnership enables us to collaborate with a host of industry partners to not only produce energy but also to test and demonstrate the benefits of solar energy storage technologies. When electricity storage is not available, excess solar electricity is wasted. When storage is installed, the excess energy can be saved and subsequently used to reduce the use of a fossil fuel,” reports Abraham Wien, LEED AP O+M, Director of Architecture & Environmental Design for Emerald Skyline.

To find out more information about Emerald City Solar or electricity generated from renewable sources such as solar and the current development in electrical energy storage technologies for a greener tomorrow, please contact Abraham Wien at aw@emeraldskyline.com or call us 305.424.8704.

 

Costa Rica powers nation sans fossil fuels, serving as example for the region

By Nancy San Martin, nsanmartin@MiamiHerald.com
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NEW POWER SOURCE: Arenal, a dormant volcano, is seen in the town of La Fortuna in the province of Guanacaste, Costa Rica. The power company managed to produce all of the electricity for the nation from renewable energy sources for 100 consecutive days ending in mid-March. The milestone was reached with the use alternative power sources, including hydroelectric power plants. Joe Raedle Getty Images

NEW POWER SOURCE: Arenal, a dormant volcano, is seen in the town of La Fortuna in the province of Guanacaste, Costa Rica. The power company managed to produce all of the electricity for the nation from renewable energy sources for 100 consecutive days ending in mid-March. The milestone was reached with the use alternative power sources, including hydroelectric power plants. Joe Raedle Getty Images

GUANACASTE, COSTA RICA

In the heart of this western province where scalding water emerges from the earth and peaks of volcanoes kiss the hovering clouds, sunshine, wind and rain have been culled to create a source of power that has earned this nation a gold star in renewable energy.

For 100 consecutive days ending in mid-March, Costa Rica did not use any fossil fuels to generate electricity. Instead, it relied on primarily hydropower plants to light up households across the country, with added power generated from wind, geothermal and solar projects.

Experts say Costa Rica’s fossil fuel-free streak is impressive though not a surprise: The nation of nearly 5 million people has pledged to become carbon neutral by 2021 and the country’s electricity matrix, on average, is already nearly 90 percent renewable, making Costa Rica the second most “renewable country” in Latin America following Paraguay in terms of electricity generation, said Juan Roberto Paredes, senior renewable energy specialist at the Inter-American Development Bank (IDB).

Paredes points to the country’s diversified sources for renewable energy as its hallmark. By relying on various sources, Costa Rica has been able to both provide electricity and keep costs down by not having to import a large amount of costly fossil fuels.

“The lesson to be learned is in diversification,” Paredes said. “You can have stability in the longer term, as it relates to electricity prices, if you rely on various renewable sources as the fuel price will always be zero.”

Felix Mormann, a University of Miami law professor who teaches and writes about environmental law and policy, said Costa Rica’s achievement is noteworthy.

“Sourcing 100 percent of energy needs from renewables is amazing,” he said. “The fact that they did not have to burn any fossil fuels is outstanding.”

Like other countries relying on renewable energy, Costa Rica gets most of its carbon-free electricity juice — about 80 percent — from hydropower plants operated by the state-run utility provider, Costa Rican Electricity Institute (ICE). But this year, geothermal, solar and wind energy sources have given the nation an additional boost to limit the use of coal or petroleum to keep light bulbs glowing and appliances humming.

Hydropower

At the ICE hydroelectric plant and reservoir in the shadow of the Arenal volcano near the town of Tilarán, the production of electrical power is generated through the use of the gravitational force of water stored in the reservoir that flows through turbines connected to large generators. This plant provides some 21 percent of energy for the country, said supervisor Alberto Sanchez Fernandez.

“Since we were children, we have been taught to respect nature,” Sánchez Fernández said. “In that sense, this country has gotten better because those lessons go back a generation and it’s ingrained in our children. The fact that my country is producing energy from 100 percent clean sources, makes me very proud and satisfied that we are helping protect this planet, the only place we have to live.”

Sánchez Fernández said when children visit the plant on field trips, “I always tell them that mankind, before dying, should have at least conceived a child and planted a tree.”

Along the hilltops, giant wind turbines like those of an airplane propeller, can be seen circulating at various speeds, depending on the strength of winds that flow through the area. The windmill project began in the 1980s and about 30 wind turbines can now provide electricity to about 26,000 homes.

“This accomplishment is the result of making use of our natural resources and experimentation,” said Carlos Manuel Quiros, a company spokesman.

Tilarán, the town’s name, comes from the indigenous word “Tilawa.” It means place of wind and rain.

Geothermal

Billboards in Bagaces and nearby towns dub the area as the cuna (cradle) of geothermal. Power lines emit a high-pitched sound that can be heard for miles, like crickets on steroids. And the smell of sulfur is reminiscent of the odor that comes from cracking warm hard-boiled eggs.

The geothermal plants Miravalles I y II use subterranean heat to produce electricity. Wells are drilled deep into the earth and the water that comes out of the wells are 85 percent liquid and 15 percent steam. The steam is used to turn large turbines, which run electrical generators. Some 35 wells in the area are used for production, said Darlyn Gutierrez Rodriguez, an assistant engineer.

“The advantages of geothermal is that it’s not dependent on seasonal variations,” she said. “It isn’t dependent on whether it rains or is windy or sunny. It’s constant production.”

Geothermal now contributes about 14 percent of Costa Rica’s energy and will likely grow as the government makes further investments. In a country with six active volcanoes and dozens more inactive, geothermal provides an exceptionally reliable source of power, experts said.

Solar

Just a short drive away, is a solar panel farm built with equipment donated by Japan. The project, comprised of 4,300 panels, began in 2012 and now provides electricity to about 550 homes, said supervisor Mauro Arias.

“For us, it’s been very novel, very important, because it’s an experimental plant,” he said. “Without a doubt, we have a good location for this solar plant…We are able to document, minute by minute, the output of solar energy…We are the pioneers in Central America.”

While the power produced by this method remains small, Arias said similar farms have been built in neighboring Nicaragua and Panama. “It’s cheaper, cleaner for the environment,” he said.

Other countries in the region could follow Costa Rica’s steps about diversification as they also have untapped renewable potential. This is the case of geothermal resources in the Andean countries where volcanic activity is comparable to Central America but no electricity so far is produced with the heat of the earth, said Paredes of the IDB.

But even as the use of renewable energy is applauded, there are potential setbacks. Droughts come from limited rainfall, which can affect electricity production. Wind and solar availability can vary from year to year. And, of course, there’s the issue of climate change.

“The but is maybe the variability of these renewable sources,” Paredes said. “We can’t be 100 percent sure of what will happen next year.”

Storing energy in an efficient manner also is a work in progress that will get better with technology. In Central America, the IDB is supporting the electricity market with Costa Rica and five other nations: Guatemala, El Salvador, Honduras, Panama and Nicaragua.

“In order to cope with this variability, you can diversify and use complementary renewable sources such as wind and hydro, use smarter grids to manage variations better and have more interconnections to other countries in case you have excess electricity,” Paredes said.

For Costa Rica, the more measurable results of its renewable energy success will be known by early 2016 when a full year worth of data will be available to compare with the previous year. By then, the largest hydropower plant in Central America should be in operation. The Reventazón Hydroelectric Project, located in the eastern province of Limón, is expected to be ready for operation by January.

Whether Costa Rica’s renewable energy model can be implemented in other countries will depend on the topography and climate, said Mormann of UM.

“Costa Rica is a small country and has a very special resource mix,” he said. “Costa Rica did not do this to do the rest of the world a favor. In their particular situation, it made the most sense. This is more about setting an example that it can be done.”
Read more here: http://www.miamiherald.com/opinion/issues-ideas/article19542720.html#storylink=cpy

 

How you can help make Florida the Sunshine State again

Julie

By Julie Lundin, LEED-AP ID+C,
Principal, Emerald Skyline Corporation 

 

 

Florida is undeniably sunny. “The Sunshine State” was adopted as the State Nickname in 1970. It is used on FL_Sunshinemotor vehicle licenses, welcome signs and marketing campaigns. While Florida promotes itself as the Sunshine State we are not utilizing our most abundant and natural resource, solar power.

What is solar power? It is energy from the sun that is converted into thermal or electrical energy. Solar energy is the cleanest and most abundant renewable energy source available. The U.S., including Florida, provides some of the richest solar resources in the world. Only two other states, California and Texas, have more rooftop solar power potential than Florida, according to the U.S. Department of Energy. Based on Florida’s size, rebounding economy and growing population our state should be a leader in the generation and promotion of solar energy.

So why isn’t Florida a solar energy leader?

The reason is simple: Florida’s large utility monopolies and lawmakers have worked successfully to block and control who can generate solar energy and what it can be used for; thereby restricting its use by homeowners and businesses. Florida utility monopolies exist today due to a law that was created over 100 years ago which was trying to avoid a tangle of power lines strung up by competing companies.  This same law restricts solar companies from installing solar panels on roofs and selling back electricity. It is considered a third party sale and is illegal in Florida.

  • Florida is now only one of four states in the nation that prohibit citizens from buying electricity from companies that will put solar panels on a building.

Due to the influence and power of Florida’s utility monopolies, there is a large effort to discourage renewable energy in the state. The large utilities are afraid of losing their monopoly and the lucrative profits that the government guarantees them. Recently lawmakers, at the direction of the utility companies, gutted the State’s energy savings goals and entirely eliminated Florida’s solar-rebate program.

Floridians should have access to solar power and free market choices. We should be allowed to contract directly with solar providers to power our homes and businesses with solar energy. We are currently being denied the right to choose solar as a power source. The free market and competition benefits all of us. Solar energy makes financial sense. That is why business leaders in America’s brightest, most competitive companies are increasingly choosing to install solar energy systems at their facilities. The price of solar energy has fallen dramatically over the past few years while the price of fossil fuel generation continues to experience volatility. America’s businesses are turning to solar power because it’s good for their bottom line.

  • According to a report by the Solar Energy Industries Association, Walmart is the top corporate user in the United States with 105 MW installed at 254 locations.
  • The average price of an installed commercial PV (photovoltaic) project in 2Q2014 was 14% less than the cost in 2013 and was over 45% less than it cost to complete in 2012.

Electricity costs represent a significant operating expense, and solar provides the means to reduce costs and hedge against electricity price increases.

  • The Solar Means Business report noted that the top 25 companies for solar capacity had more than 569 MW of solar PV at 1,110 different facilities in a survey conducted last August. These results represent a 28% increase over the prior year and a 103% increase over 2012.

Clearly, solar power is a great untapped resource for the Sunshine State – one that can benefit residents as well as businesses. It is time to enable Floridians to have unfettered access to this inexpensive energy source – and you can help in the process:

The Florida resident-led solar group, Floridians for Solar Choice, is seeking to make solar more accessible in the state. They are seeking your signature on a ballot petition.

  • The petition seeks to expand solar choice by allowing customers the option to power their homes or businesses with solar power and chose who provides it to them.

Floridians for Solar Choice have reached 72,000 signatures on their petition which clears the way for it to be reviewed by Florida’s Supreme Court.

  • The Supreme Court will decide whether or not the petitions language legally qualifies it to be a ballot initiative for Floridians in 2016.

Getting its petition on the 2016 ballot is the main goal for Floridians for Solar Choice. They need over 600,000 more signatures to have this critical citizen initiative to be put on the ballot for next year.

Please visit their website to learn about the solar initiative to remove this legal barrier to making Florida the Sunshine State again, and, more importantly, to sign the petition, go to: www.FLsolarchoice.org.