Duke, NC GreenPower launch offset program

Nuclear Power for Net-Zero Grids anchors reliable baseload, integrating renewables with grid stability as solar, wind, and battery storage scale. Advanced reactors complement hydropower, curb natural gas reliance, and accelerate deep decarbonization of electricity systems.

Key Points

Uses nuclear baseload and advanced reactors to stabilize power grids and integrate higher shares of variable renewables.

✅ Provides firm, zero-carbon baseload for renewable-heavy grids

✅ Reduces natural gas dependence and peaker emissions

✅ Advanced reactors enhance safety, flexibility, and cost

Declining solar, wind, and battery technology costs are helping to grow the share of renewables in the world’s power mix to the point that governments are pledging net-zero emission electricity generation in two to three decades to fight global warming.

Yet, electricity grids will continue to require stable baseload to incorporate growing shares of renewable energy sources and ensure lights are on even when the sun doesn’t shine, or the wind doesn’t blow. Until battery technology evolves enough—and costs fall far enough—to allow massive storage and deployment of net-zero electricity to the grid, the systems will continue to need power from sources other than solar and wind.

And these will be natural gas and nuclear power, regardless of concerns about emissions from the fossil fuel natural gas and potential disasters at nuclear power facilities such as the ones in Chernobyl or Fukushima.

As natural gas is increasingly considered as just another fossil fuel, nuclear power generation provides carbon-free electricity to the countries that have it, even as debates over nuclear power’s outlook continue worldwide, and could be the key to ensuring a stable power grid capable of taking in growing shares of solar and wind power generation.

The United States, where nuclear energy currently provides more than half of the carbon-free electricity, is supporting the development of advanced nuclear reactors as part of the clean energy strategy.

But Europe, which has set a goal to reach carbon neutrality by 2050, could find itself with growing emissions from the power sector in a decade, as many nuclear reactors are slated for decommissioning and questions remain over whether its aging reactors can bridge the gap. The gap left by lost nuclear power is most easily filled by natural gas-powered electricity generation—and this, if it happens, could undermine the net-zero goals of the European Union (EU) and the bloc’s ambition to be a world leader in the fight against climate change.

U.S. Power Grid Will Need Nuclear For Net-Zero Emissions

A 2020 report from the University of California, Berkeley, said that rapidly declining solar, wind, and storage prices make it entirely feasible for the U.S. to meet 90 percent of its power needs from zero-emission energy sources by 2035 with zero increases in customer costs from today’s levels.

Still, natural gas-fired generation will be needed for 10 percent of America’s power needs. According to the report, in 2035 it would be possible that “during normal periods of generation and demand, wind, solar, and batteries provide 70% of annual generation, while hydropower and nuclear provide 20%.” Even with an exponential rise in renewable power generation, the U.S. grid will need nuclear power and hydropower to be stable with such a large share of solar and wind.

The U.S. Backs Advanced Nuclear Reactor Technology

The U.S. Department of Energy is funding programs of private companies under DOE’s new Advanced Reactor Demonstration Program (ARDP) to showcase next-gen nuclear designs for U.S. deployment.

“Taking leadership in advanced technology is so important to the country’s future because nuclear energy plays such a key role in our clean energy strategy,” U.S. Secretary of Energy Dan Brouillette said at the end of December when DOE announced it was financially backing five teams to develop and demonstrate advanced nuclear reactors in the United States.

“All of these projects will put the U.S. on an accelerated timeline to domestically and globally deploy advanced nuclear reactors that will enhance safety and be affordable to construct and operate,” Secretary Brouillette said.

According to Washington DC-based Nuclear Energy Institute (NEI), a policy organization of the nuclear technologies industry, nuclear energy provides nearly 55 percent of America’s carbon-free electricity. That is more than 2.5 times the amount generated by hydropower, nearly 3 times the amount generated by wind, and more than 12 times the amount generated by solar. Nuclear energy can help the United States to get to the deep carbonization needed to hit climate goals.

Europe Could See Rising Emissions Without Nuclear Power

While the United States is doubling down on efforts to develop advanced and cheaper nuclear reactors, including microreactors and such with new types of technology, Europe could be headed to growing emissions from the electricity sector as nuclear power facilities are scheduled to be decommissioned over the next decade and Europe is losing nuclear power just when it really needs energy, according to a Reuters analysis from last month.

In many cases, it will be natural gas that will come to the rescue to power grids to ensure grid stability and enough capacity during peak demand because solar and wind generation is variable and dependent on the weather.

For example, Germany, the biggest economy in Europe, is boosting its renewables targets, but it is also phasing out nuclear by next year, amid a nuclear option debate over climate strategy, while its deadline to phase out coal-fired generation is 2038—more than a decade later compared to phase-out plans in the UK and Italy, for example, where the deadline is the mid-2020s.

The UK, which left the EU last year, included support for nuclear power generation as one of the ten pillars in ‘The Ten Point Plan for a Green Industrial Revolution’ unveiled in November.

The UK’s National Grid has issued several warnings about tight supply since the fall of 2020, due to low renewable output amid high demand.

“National Grid’s announcement underscores the urgency of investing in new nuclear capacity, to secure reliable, always-on, emissions-free power, alongside other zero-carbon sources. Otherwise, we will continue to burn gas and coal as a fallback and fall short of our net zero ambitions,” Tom Greatrex, Chief Executive of the Nuclear Industry Association, said in response to one of those warnings.

But it’s in the UK that one major nuclear power plant project has notoriously seen a delay of nearly a decade—Hinkley Point C, originally planned in 2007 to help UK households to “cook their 2017 Christmas turkeys”, is now set for start-up in the middle of the 2020s.

Nuclear power development and plant construction is expensive, but it could save the plans for low-carbon emission power generation in many developed economies, including in the United States.

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UK Coal Phase-Out signals an energy transition, accelerating decarbonization with offshore wind, solar, and storage, advancing net-zero targets, cleaner air, and a just transition for communities impacted by fossil fuel decline.

Key Points

A policy to end coal power in the UK, boosting renewables and net-zero goals while improving air quality.

✅ Coal electricity fell from 40% in 2012 to under 3% by 2022

✅ Offshore wind and solar expand capacity; storage enhances reliability

✅ Just transition funds retrain workers and support coal regions

The United Kingdom is poised to mark a significant milestone in its energy history by phasing out coal power entirely, ending a reliance that has lasted for 142 years. This decision underscores the UK’s commitment to combating climate change and transitioning toward cleaner energy sources, reflecting a broader global energy transition away from fossil fuels. As the country embarks on this journey, it highlights both the achievements and challenges of moving towards a sustainable energy future.

A Historic Transition

The UK’s relationship with coal dates back to the Industrial Revolution, when coal was the backbone of its energy supply, driving factories, trains, and homes. However, as concerns over air quality and climate change have mounted, the nation has progressively shifted its focus toward renewable energy sources amid a global decline in coal-fired electricity worldwide. The decision to end coal power represents the culmination of this transformation, signaling a definitive break from a past heavily reliant on fossil fuels.

In recent years, the UK has made remarkable strides in reducing its carbon emissions. From 2012 to 2022, coal's contribution to the country's electricity generation plummeted from around 40% to less than 3%, as policies like the British carbon tax took effect across the power sector. This dramatic decline is largely due to the rise of renewable energy sources, such as wind, solar, and hydroelectric power, which have increasingly filled the gap left by coal.

Environmental and Health Benefits

The move away from coal power has significant environmental benefits. Coal is one of the most carbon-intensive energy sources, releasing substantial amounts of carbon dioxide (CO2) and other harmful pollutants into the atmosphere. By phasing out coal, the UK aims to significantly reduce its greenhouse gas emissions and improve air quality, which has been linked to serious health issues such as respiratory diseases and cardiovascular problems.

The UK government has set ambitious net zero policies, aiming to achieve net-zero carbon emissions by 2050. Ending coal power is a critical step in reaching this target, demonstrating leadership on the global stage and setting an example for other countries still dependent on fossil fuels. This transition not only addresses climate change but also promotes a healthier environment for future generations.

The Role of Renewable Energy

As the UK phases out coal, renewable energy sources are expected to play a central role in meeting the country's energy needs. Wind power, in particular, has surged in prominence, with the UK leading the world in offshore wind capacity. In 2020, wind energy surpassed coal for the first time, accounting for over 24% of the country's electricity generation.

Solar energy has also seen significant growth, contributing to the diversification of the UK’s energy mix. The government’s investments in renewable energy infrastructure and technology have facilitated this rapid transition, providing the necessary framework for a sustainable energy future.

Economic Implications

While the transition away from coal power presents environmental benefits, it also carries economic implications. The coal industry has historically provided jobs and economic activity, particularly in regions where coal mining was a mainstay, a dynamic echoed in analyses of the decarbonization of Canada's electricity grid and its regional impacts. As the UK moves toward a greener economy, there is an urgent need to support communities that may be adversely affected by this transition.

To address potential job losses, the government has emphasized the importance of investing in retraining programs and creating new opportunities in the renewable energy sector. This will be vital in ensuring a just transition that supports workers and communities as the energy landscape evolves.

Challenges Ahead

Despite the progress made, the journey toward a coal-free UK is not without challenges. One significant concern is the need for reliable energy storage solutions to complement intermittent renewable sources like wind and solar. Ensuring a stable energy supply during periods of low generation will be critical for maintaining grid reliability.

Moreover, public acceptance and engagement will be crucial, as illustrated by debates over New Zealand's electricity transition and its pace, as the UK navigates this transition. Engaging communities in discussions about energy policies and developments can foster understanding and support for the changes ahead.

Looking to the Future

The UK’s decision to phase out coal power after 142 years marks a significant turning point in its energy policy and environmental strategy. This historic shift not only aligns with the country’s climate goals but also showcases its commitment to a cleaner, more sustainable future.

As the UK continues to invest in renewable energy and transition away from fossil fuels, it sets an important example for other nations, including those on China's path to carbon neutrality, grappling with similar challenges. By embracing this transition, the UK is not only addressing pressing environmental concerns but also paving the way for a greener economy that can thrive in the decades to come.

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U.S. EV Market Share Dip Q1 2024 reflects slower BEV adoption, rising PHEV demand, affordability concerns, charging infrastructure gaps, tax credit shifts, range anxiety, and automaker strategy adjustments across the electric vehicle market.

Key Points

Q1 2024 EV and hybrid share slipped as BEV sales lag, PHEVs rise, and affordability and charging concerns temper demand.

✅ BEV share fell to 7.0% as affordable models remain limited

✅ PHEV sales rose 50% YoY, easing range anxiety concerns

✅ Policy shifts and charging gaps weigh on consumer adoption

The U.S. electric vehicle (EV) market, once a beacon of unbridled growth, appears to be experiencing a course correction. Data from the U.S. Energy Information Administration (EIA) reveals that the combined market share of electric vehicles (battery electric vehicles, or BEVs) and hybrids dipped slightly in the first quarter of 2024, marking the first decline since the onset of the COVID-19 pandemic, even as EU EV share rose during lockdowns in 2020.

This news comes as a surprise to many analysts who predicted continued exponential growth for the EV market. While overall sales of electric vehicles surged into 2024 and did increase by 7% compared to Q1 2023, this growth wasn't enough to keep pace with the overall rise in vehicle sales. The result: a decline in market share from 18.8% in Q4 2023 to 18.0% in Q1 2024.

Several factors may be contributing to this shift. One potential culprit is a slowdown in battery electric vehicle sales. BEVs saw their share of the market dip from 8.1% to 7.0% in the same period. This could be attributed to a lack of readily available affordable options, with many popular EV models still commanding premium prices and concerns that EV supply may miss demand in the near term.

Another factor could be the rising interest in plug-in hybrid electric vehicles (PHEVs). PHEV sales witnessed a significant jump of 50% year-over-year, reflecting how gas-electric hybrids are getting a boost from major automakers, potentially indicating a consumer preference for vehicles that offer both electric and gasoline powertrain options, addressing concerns about range anxiety often associated with BEVs.

Industry experts offer mixed interpretations of this data. Some downplay the significance of the dip, attributing it to a temporary blip, even though EVs remain behind gas cars in total sales. They point to the ongoing commitment from major automakers to invest in EV production and the potential for new, more affordable models to hit the market soon.

Others express more concern, citing Europe's recent EV slump and suggesting this might be a sign of maturing consumer preferences. They argue that simply increasing the number of EVs on the market might not be enough. Automakers need to address issues like affordability, charging infrastructure, and range anxiety to maintain momentum.

The role of government incentives also remains a question mark. The federal tax credit for electric vehicles is currently set to phase out gradually, potentially impacting consumer purchasing decisions in the future. Continued government support, through incentives or infrastructure development, could be crucial in maintaining consumer interest.

The coming quarters will be crucial in determining the long-term trajectory of the U.S. EV market, especially after the global electric car market's rapid expansion in recent years. Whether this is a temporary setback or a more lasting trend remains to be seen. Addressing consumer concerns, ensuring a diverse range of affordable EV options, and continued government support will all be essential in ensuring the continued growth of this critical sector.

This development also presents an opportunity for traditional automakers. By capitalizing on the growing PHEV market and addressing consumer concerns about affordability and range anxiety, they can carve out a strong position in the evolving automotive landscape.

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Omnidian Acquisition of Solar Service Guys accelerates global expansion in renewable energy, enhancing solar maintenance and remote monitoring across Australia and the U.S., boosting performance management, uptime, and ROI for residential and commercial systems.

Key Points

Omnidian acquired Solar Service Guys to expand in Australia, unifying O&M and monitoring to boost solar performance.

✅ Expands Omnidian into Australia's high-adoption solar market.

✅ Integrates largest Aussie solar service network for O&M scaling.

✅ Enhances remote monitoring, uptime, and ROI for PV owners.

In a strategic move aimed at boosting its presence in the global renewable energy market, Seattle-based Omnidian has announced the acquisition of Australia's Solar Service Guys. This acquisition marks a significant step in Omnidian's expansion into Australia, one of the world’s leading solar markets, and is expected to reshape the landscape of solar panel services both in the U.S. renewables market and abroad.

Founded in 2018, Omnidian is a rapidly growing startup that specializes in managing the performance of solar power systems, ensuring they continue to operate efficiently and effectively. The company provides maintenance services for both residential and commercial solar installations, including in Washington where Avista's largest solar array highlights growing scale, and its proprietary software remotely monitors solar systems to identify any performance issues. By quickly addressing these problems, Omnidian helps customers maximize the energy output of their systems, reducing downtime and increasing the return on investment in solar power.

The company’s acquisition of Solar Service Guys, Australia’s largest solar service network, is a clear indication of its ambition to dominate the renewable energy sector globally, amid consolidation trends like TotalEnergies' VSB acquisition across Europe, that signal accelerating scale. The Australian company, which has been operational since 2006, has built a strong reputation for providing high-quality solar panel services across the country. By integrating Solar Service Guys into its operations, Omnidian plans to leverage the Australian company’s deep industry expertise and established network to extend its service offerings into Australia’s solar market.

The acquisition could not come at a better time. Australia, with its vast sun-drenched landscapes, is one of the world’s leaders in solar energy adoption per capita, even as markets like Canada's solar lag persist by comparison. The country has long been at the forefront of renewable energy development, and this acquisition presents a significant opportunity for Omnidian to tap into a booming market where solar power is increasingly seen as a primary energy source.

With the deal now finalized, Solar Service Guys will operate as a fully integrated subsidiary of Omnidian. The merger will not only strengthen Omnidian’s service capabilities but will also enhance its ability to provide comprehensive solutions to solar system owners, ensuring their panels perform at peak efficiency over their lifetime. This is particularly important as solar energy continues to grow in popularity, with more residential and commercial properties opting for solar installations as a means to lower energy costs and reduce their carbon footprints.

The acquisition also underscores the growing importance of solar energy maintenance services. As the adoption of solar panels continues to rise globally, including in Europe where demand for U.S. solar gear is strengthening, the need for ongoing monitoring and maintenance is becoming increasingly vital. Solar energy systems, while relatively low-maintenance, do require periodic checks to ensure they are functioning optimally. Omnidian’s software-based approach to remotely detecting performance issues allows the company to quickly identify and address potential problems before they become costly or result in significant energy loss.

By expanding its reach into Australia, Omnidian can now offer its services to an even broader customer base, positioning itself as a key player in the renewable energy market. The Australian solar market is projected to continue its growth trajectory, with many homeowners and businesses in the country looking to make the switch to solar power in the coming years.

In addition to expanding its geographic footprint, Omnidian’s acquisition of Solar Service Guys aligns with its broader mission to support the global transition to renewable energy. As governments worldwide push for cleaner energy alternatives and new projects like a U.S. clean energy factory accelerate domestic supply chains, companies like Omnidian are playing an essential role in making solar power a more reliable and sustainable option for consumers.

With the backing of Solar Service Guys’ extensive network and experience, Omnidian is poised to deliver even greater value to its customers, as industry transactions like Canadian Solar's plant sale underscore active market realignment. The acquisition will also help the company strengthen its technological capabilities, improve its service offerings, and accelerate its mission to create a more sustainable energy future.

As Omnidian continues to grow, the company’s success will likely serve as a model for other startups in the renewable energy sector. By focusing on performance management, expanding its service offerings, and leveraging cutting-edge technology, Omnidian is well-positioned to lead the way in the next generation of solar energy solutions. The future looks bright for Omnidian, and with this acquisition, it is well on its way to becoming a dominant force in the global solar market.

Omnidian’s acquisition of Solar Service Guys marks a significant milestone in the company’s quest to revolutionize the renewable energy industry. By expanding into Australia and enhancing its service capabilities, Omnidian is not only strengthening its position in the market but also contributing to the global push for cleaner, more sustainable energy solutions. As the world continues to embrace solar power, companies like Omnidian will be essential in ensuring that solar systems operate at peak efficiency, helping customers maximize the benefits of their investment in renewable energy.

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Texas Deep Freeze Energy Crisis strains grids as polar vortex triggers rolling blackouts, record natural gas and electricity prices, refinery shutdowns, WTI gains, and scarcity pricing across Texas, Oklahoma, SPP, and Mexico.

Key Points

A polar vortex slamming Texas energy: outages, record power prices, gas spikes, and reduced oil output.

✅ Record gas trades near $500/mmBtu; power hits $6,000/MWh

✅ WTI tops $60 as Texas shuts in ~1 million bpd

✅ Rolling blackouts across SPP; ERCOT scarcity pricing

A deep freeze is roiling electricity markets in more than a dozen U.S. states, leading to record-setting prices for electricity and natural gas, knocking oil production off line and shutting down some of North America’s largest refineries.

“It’s freakishly cold,” said Eric Fell, a senior natural gas analyst with Wood Mackenzie in Houston, where record cold temperatures and snow have blanketed the city, caused rolling power outages, shut down refineries and sent both natural gas and electricity prices soaring.

'It’s freakishly cold': Deep freeze slams North American energy sector

The polar vortex has led to freezing temperatures in every county in Texas, the largest energy-producing state in the U.S., and caused massive disruptions across the North American energy complex, triggering Texas power outages as far south as Mexico.

As the plunge in temperatures forced oil companies to shut in an estimated one million barrels of oil production in Texas on Monday, the West Texas Intermediate benchmark price rose above the US$60 per barrel threshold for the first time in a year to settle up 1 per cent, or US65 cents, at US$60.12 per barrel.

President Joe Biden declared an emergency on Monday, unlocking federal assistance to Texas.

People carry groceries from a local gas station on Monday in Austin, Texas. Winter storm Uri has brought historic cold weather to Texas, causing traffic delays and power outages. 

Frozen wind farms are just a small piece of Texas’s power grid woes right now.

Fell said regional natural gas and electricity prices in Oklahoma and Texas broke U.S. records over the weekend.

On Friday, Oklahoma gas transmission prices averaged US$350 per million British thermal units and Fell said one trade went as high as US$600 per mmBtu. In parts of the Texas panhandle and elsewhere, prices jumped to US$200, “all of which individually would have been new records,” Fell said, noting the previous record was US$160.

On Monday, natural gas for physical delivery in the U.S. was trading for as much as US$500 per mmBtu as demand for the heating and power plant fuel soared.  Spot gas has been trading for hundreds of dollars across the central U.S. since Thursday with a surge in heating demand triggering widespread blackouts and sending electricity prices soaring. The fuel normally trades in the region for less than US$3 per mmBtu.

Similarly, electricity prices in Texas surged to US$6,000 per megawatt hour on Monday, as U.S. power companies grapple with supply-chain constraints, which Fell said is “100 times the normal price.”

“You’re seeing scarcity pricing in power and gas. The only thing that’s different this time is it’s staying there – it’s not just an hour or two hours, it’s the whole day,” he said.

The blast of Arctic cold, which has blanketed Canada and much of the U.S., has created a massive draw on natural gas supplies, used both for home heating and industrial uses like electricity generation.

Little Rock, Ark.-based Southwest Power Pool, which coordinates electricity distribution for parts of 14 states including Oklahoma Kansas, Nebraska and even as far north as North Dakota, announced rolling blackouts across its network on Monday as a result of the power outages.

“In our history as a grid operator, this is an unprecedented event and marks the first time SPP has ever had to call for controlled interruptions of service” SPP’s executive vice-president and chief operating officer Lanny Nickell said in a release, adding the move was “a last resort” to “prevent circumstances from getting worse.”

The frigid conditions have led to a surge in natural gas prices across the continent, including in Alberta where the AECO benchmark price jumped to a seven-year high of $6.36 per thousand cubic feet last week, a price not seen since 2014.

Energy systems in Texas and Oklahoma, which are major energy exporters to other U.S. states, are built to withstand severe heat – not extreme cold. The result is a disruption to the gas supply at exactly the time the U.S. energy system is demanding those molecules.

“Given how far south it’s gone into Texas, this is where you have a lot of gas production that isn’t properly winterized,” said Jeremy McCrea, an analyst with Raymond James covering the natural gas industry.

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Solar-Wind-Water West Africa integrates hydropower with solar and wind to boost grid flexibility, clean electricity, and decarbonization, leveraging the West African Power Pool and climate data modeling reported in Nature Sustainability.

Key Points

A strategy using hydropower to balance solar and wind, enabling reliable, low-carbon electricity across West Africa.

✅ Hydropower dispatch covers solar and wind shortfalls.

✅ Regional interconnection via West African Power Pool.

✅ Cuts CO2 versus gas while limiting new dam projects.

Hydropower plants can support solar and wind power, rather unpredictable by nature, in a climate-friendly manner. A new study in the scientific journal Nature Sustainability has now mapped the potential for such "solar-wind-water" strategies for West Africa: an important region where the power sector is still under development, amid IEA investment needs for universal access, and where generation capacity and power grids will be greatly expanded in the coming years. "Countries in West Africa therefore now have the opportunity to plan this expansion according to strategies that rely on modern, climate-friendly energy generation," says Sebastian Sterl, energy and climate scientist at Vrije Universiteit Brussel and KU Leuven and lead author of the study. "A completely different situation from Europe, where power supply has been dependent on polluting power plants for many decades - which many countries now want to rid themselves of."

Solar and wind power generation is increasing worldwide and becoming cheaper and cheaper. This helps to keep climate targets in sight, but also poses challenges. For instance, critics often argue that these energy sources are too unpredictable and variable to be part of a reliable electricity mix on a large scale, though combining multiple resources can enhance project performance.

"Indeed, our electricity systems will have to become much more flexible if we are to feed large amounts of solar and wind power into the grid. Flexibility is currently mostly provided by gas power plants. Unfortunately, these cause a lot of CO2 emissions," says Sebastian Sterl, energy and climate expert at Vrije Universiteit Brussel (VUB) and KU Leuven. "But in many countries, hydropower plants can be a fossil fuel-free alternative to support solar and wind energy. After all, hydropower plants can be dispatched at times when insufficient solar and wind power is available."

The research team, composed of experts from VUB, KU Leuven, the International Renewable Energy Agency (IRENA), and Climate Analytics, designed a new computer model for their study, running on detailed water, weather and climate data. They used this model to investigate how renewable power sources in West Africa could be exploited as effectively as possible for a reliable power supply, even without large-scale storage, in line with World Bank support for wind in developing countries. All this without losing sight of the environmental impact of large hydropower plants.

"This is far from trivial to calculate," says Prof. Wim Thiery, climate scientist at the VUB, who was also involved in the study. "Hydroelectric power stations in West Africa depend on the monsoon; in the dry season they run on their reserves. Both sun and wind, as well as power requirements, have their own typical hourly, daily and seasonal patterns. Solar, wind and hydropower all vary from year to year and may be impacted by climate change, including projections that wind resources shift southward in coming years. In addition, their potential is spatially very unevenly distributed."

West African Power Pool

The study demonstrates that it will be particularly important to create a "West African Power Pool", a regional interconnection of national power grids to serve as a path to universal electricity access across the region. Countries with a tropical climate, such as Ghana and the Ivory Coast, typically have a lot of potential for hydropower and quite high solar radiation, but hardly any wind. The drier and more desert-like countries, such as Senegal and Niger, hardly have any opportunities for hydropower, but receive more sunlight and more wind. The potential for reliable, clean power generation based on solar and wind power, supported by flexibly dispatched hydropower, increases by more than 30% when countries can share their potential regionally, the researchers discovered.

All measures taken together would allow roughly 60% of the current electricity demand in West Africa to be met with complementary renewable sources, despite concerns about slow greening of Africa's electricity, of which roughly half would be solar and wind power and the other half hydropower - without the need for large-scale battery or other storage plants. According to the study, within a few years, the cost of solar and wind power generation in West Africa is also expected to drop to such an extent that the proposed solar-wind-water strategies will provide cheaper electricity than gas-fired power plants, which currently still account for more than half of all electricity supply in West Africa.

Better ecological footprint

Hydropower plants can have a considerable negative impact on local ecology. In many developing countries, piles of controversial plans for new hydropower plants have been proposed. The study can help to make future investments in hydropower more sustainable. "By using existing and planned hydropower plants as optimally as possible to massively support solar and wind energy, one can at the same time make certain new dams superfluous," says Sterl. "This way two birds can be caught with one stone. Simultaneously, one avoids CO2 emissions from gas-fired power stations and the environmental impact of hydropower overexploitation."

Global relevance

The methods developed for the study are easily transferable to other regions, and the research has worldwide relevance, as shown by a US 80% study on high variable renewable shares. Sterl: "Nearly all regions with a lot of hydropower, or hydropower potential, could use it to compensate shortfalls in solar and wind power." Various European countries, with Norway at the front, have shown increased interest in recent years to deploy their hydropower to support solar and wind power in EU countries. Exporting Norwegian hydropower during times when other countries undergo solar and wind power shortfalls, the European energy transition can be advanced.

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