off-grid

COVID-19: The Wake-Up Call The Energy Sector Needed

By: Jemma Green
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Perhaps Henry David Thoreau was onto something when he set out solo for a cabin in the woods with the aim of becoming completely self-sustainable – for one, he wouldn’t really need to stress about a contagious pandemic. 

Thoreau’s experience would later shape the 19th century literary classic Walden; or, Life in the Woods, detailing how he was able to rely solely on himself, including growing his own food and sourcing firewood for heat and light at night. 

Whether he knew it or not Thoreau was excelling at social distancing and we could all take a leaf out of his book. 

Because, while most of us have got the idea of self-isolation down pat, I bet few are likely to pass the self-sufficiency test.

You only have to look at recent purchasing trends to see some of the panic stemming from a lack of self-sufficiency to see this ‘test’ in action. 

First it was the toilet paper and tinned food, before spreading to plants, with a nursery’s months-worth of vegetables and seedlings stock sold over one weekend. 

Next up: renewable energy infrastructure, as demonstrated by one solar retailer experiencing a 41 percent jump in PV sales and a 400 percent increase in battery enquiries over the past two weeks. 

But where were these eco warriors, cultivating their own veggie patches and living ‘off-grid’ before the apocalyptic hysteria hit? 

If history is any proof, crises are often the perfect kindling for igniting change, especially when standards of living are threatened. 

And the COVID-19 crisis has certainly given the energy world a wake-up call when it comes to sustainability.  

Mother nature gets a well deserved break 

Amid coronavirus-induced lockdowns, shutdowns and working from home, air pollution has significantly dropped worldwide.

In New York, carbon monoxide levels, largely produced from cars, have fallen by nearly 50 percent compared with the same time last year. 

Greenhouse gas emissions in China have also plummeted with NASA releasing images where you can see the country’s reduction in nitrogen dioxide from space. 

Nitrogen dioxide emissions over China – Copyright NASA Earth Observatory by Joshua Stevens, using modified Copernicus Sentinel 5P data processed by the European Space Agency  – NASA

According to one analysis, the slowdown of economic activity in China led to an estimated 25 percent reduction in carbon emissions in just four weeks. 

The restriction on air travel, or any travel at all, has also clearly played a role in reducing pollutants.

And whether you choose to believe the stories of wildlife returning to cities, like dolphins and swans returning to Venice canals, coronavirus has certainly given mother nature a well-deserved moment of respite. 

However, this has been at the expense of economic development, of jobs and livelihoods – and it’s certainly not going to be long-term. 

Air pollutants will likely jump once day-to-day normalities resume. 

However, if we’re smart about it, we can use this period to re-evaluate our energy systems to help flatten the emissions curve and keep our air clean.

Energy systems under pressure 

Aside from the closure of factories and reduction in fuel-consuming transport, we can’t forget that data centers and server-farms are also huge energy-intensive industries. 

Collectively, these spaces represent approximately two percent of the United State’s total electricity use. 

In the UK, there’s been reports of home-working intensifying pressure on the electricity network, instead of being in the office where lighting, heating and cooling are shared. 

Now everyone’s either working from home, or just at home, internet use and streaming is peaking. 

A study by SaveOnEnergy estimated energy generated from the 80 million views on Netflix’s NFLX thriller Birdbox was equal to the equivalent of driving more than 146 million miles and emitting just over 66 million kilograms of CO2 – what it takes to drive from London to Istanbul and back 38,879 times. 

Beyond the environmental impact, coronavirus has brought more attention to the question of whether our current energy systems and frameworks can actually keep up with increasing demand pressures.  

Several country-appointed energy councils have met to discuss electricity demand pressures related to COVID-19, with renewable energy a popular topic. 

In a meeting between Australia’s federal, state and territory energy ministers, the transition towards a genuine two-sided market was emphasized – where consumers become prosumers by contributing excess rooftop solar and battery electricity to the grid.

This would play a large role in forming a ‘day-ahead’ market, to “address concerns that managing challenges like system strength is becoming increasingly difficult with only a real-time market”. 

On top of this, the Australian Government’s Economic Response to the Coronavirus actually includes tax deduction incentives for commercial and industrial solar PV, in a bid to help alleviate financial pressure through reduced electricity bills. 

Digital transformation is underway across the energy sector, with significant advancements in renewable energy technologies and the ways in which energy is distributed. 

For any real change to occur, you need people to switch perspectives.

Powering new mindsets

Tough times spark innovation. Now is as good a time as any to test new energy systems and processes, and it starts with a shift in thinking. 

Energy networks, retailers and operators have delivered services in much the same way for a century – driven by fossil-fuels. 

New technology is making it easier, more effective and affordable to use renewable energy, and the costs associated with installing those technologies, such as solar and batteries are decreasing.

And most industry players recognise the need to change and evolve in order to remain relevant, or are at least are starting to, with a little nudge from COVID-19. 

Self-generating renewable energy infrastructure gives people the power to become self-sufficient for their electricity needs, with some even going ‘off-grid’ altogether. 

National Energy Market retailer Powerclub is one company already trialling new technology to help alleviate demand pressure on the grid via a Virtual Power Plant (VPP) in South Australia and is currently calling for more households to join. 

The VPP enables Powerclub households with batteries to sell their stored, excess solar back to the grid during peak demand periods and price hikes, via peer-to-peer energy trading technology. 

There is a huge benefit to the broader community in that the VPP gives those who may not be able to afford solar panels, or those who are renting, the opportunity to access clean energy. 

As great as it is to think of only the environmental benefit that comes with using clean energy, a monetary incentive certainly makes the proposition more appealing. 

Not only does a VPP provide renewable energy infrastructure owners with a passive income, it can also provide an incentive for others to install solar panels – knowing they’ll be able to pay back their investment faster. 

Pair a VPP with home grown vegetables and you’re a little closer to achieving Thoreau’s vision for self-sufficiency. 

Where to from here? 

At the end of the day, it shouldn’t take a pandemic for people to reconsider their impact on the environment – but it has. 

We’re now being given a chance to press reset on many areas of our lives and reconsider what it takes and what choices to make in order to lead a more sustainable lifestyle. 

Energy regulators are on the right track with numerous initiatives and policy changes currently underway.

But you could make a change right now – how we return to normal life post COVID-19 could lay the foundations for a cleaner and more resilient energy future.

Why does that matter? Well, as Thoreau said; “What is the use of a house if you don’t have a decent planet to put it on?”

Siemens Gamesa Pursues Hybrid Wind and Solar Projects With Energy Storage

The company confirms hybrid systems are a growing focus area.

By Jason Deign
View the original article here.

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.”