Solar is now ‘cheapest electricity in history’, confirms IEA

2020 U.S. Renewable Electricity Generation set a record as wind, solar, hydro, biomass, and geothermal produced 834 billion kWh, surpassing coal and nuclear, second only to natural gas in nationwide power output.

Key Points

The record year when renewables made 834 billion kWh, topping coal and nuclear in U.S. electricity.

✅ Renewables supplied 21% of U.S. electricity in 2020

✅ Coal output fell 20% y/y; nuclear slipped 2% on retirements

✅ EIA forecasts renewables rise in 2021-2022; coal rebounds

In 2020, renewable energy sources (including wind, hydroelectric, solar, biomass, and geothermal energy) generated a record 834 billion kilowatthours (kWh) of electricity, or about 21% of all the electricity generated in the United States. Only natural gas (1,617 billion kWh) produced more electricity than renewables in the United States in 2020. Renewables surpassed both nuclear (790 billion kWh) and coal (774 billion kWh) for the first time on record. This outcome in 2020 was due mostly to significantly less coal use in U.S. electricity generation and steadily increased use of wind and solar generation over time, amid declining consumption trends nationwide.

In 2020, U.S. electricity generation from coal in all sectors declined 20% from 2019, while renewables, including small-scale solar, increased 9%. Wind, currently the most prevalent source of renewable electricity in the United States, grew 14% in 2020 from 2019, and the EIA expects solar and wind to be larger sources in summer 2022, reflecting continued growth. Utility-scale solar generation (from projects greater than 1 megawatt) increased 26%, and small-scale solar, such as grid-connected rooftop solar panels, increased 19%, while early 2021 January power generation jumped year over year.

Coal-fired electricity generation in the United States peaked at 2,016 billion kWh in 2007 and much of that capacity has been replaced by or converted to natural gas-fired generation since then. Coal was the largest source of electricity in the United States until 2016, and 2020 was the first year that more electricity was generated by renewables and by nuclear power than by coal (according to our data series that dates back to 1949). Nuclear electric power declined 2% from 2019 to 2020 because several nuclear power plants retired and other nuclear plants experienced slightly more maintenance-related outages.

We expect coal-fired generation to increase in the United States during 2021 as natural gas prices continue to rise and as coal becomes more economically competitive. Based on forecasts in our Short-Term Energy Outlook (STEO), we expect coal-fired electricity generation in all sectors in 2021 to increase 18% from 2020 levels before falling 2% in 2022. We expect U.S. renewable generation across all sectors to increase 7% in 2021 and 10% in 2022, and in 2021, non-fossil fuel sources accounted for about 40% of U.S. electricity. As a result, we forecast coal will be the second-most prevalent electricity source in 2021, and renewables will be the second-most prevalent source in 2022. We expect nuclear electric power to decline 2% in 2021 and 3% in 2022 as operators retire several generators.

Related News

• Electricity Forum News

• Renewable Energy News

Floating Solar at Fort Bragg delivers a 1 MW DoD-backed floatovoltaic array on Big Muddy Lake, boosting renewable energy, resilience, and efficiency via water cooling, with Duke Energy and Ameresco supporting backup power.

Key Points

A 1 MW floating PV array on Big Muddy Lake, built by the US Army to boost efficiency, resilience, and backup power.

✅ 1 MW array supplies backup power for training facilities.

✅ Water cooling improves panel efficiency and output.

✅ Partners: Duke Energy, Ameresco; DoD's first floating solar.

Floating solar had a moment in the spotlight over the weekend when the US Army unveiled a new solar plant sitting atop the Big Muddy Lake at Fort Bragg in North Carolina. It’s the first floating solar array deployed by the Department of Defense, and it’s part of a growing current of support in the US for “floatovoltaics” and other innovations like space-based solar research.

The army says its goal is to boost clean energy, support goals in the Biden solar plan for decarbonization, reduce greenhouse gas emissions, and give the nearby training facility a source of backup energy during power outages. The panels will be able to generate about one megawatt of electricity, which can typically power about 190 homes, and, when paired with solar batteries, enhance resilience during extended outages.

The installation, the largest in the US Southeast, is a big win for floatovoltaics, and projects like South Korea’s planned floating plant show global momentum for the technology, which has yet to make a big splash in the US. They only make up 2 percent of solar installations annually in the country, according to Duke Energy, which collaborated with Fort Bragg and the renewable energy company Ameresco on the project, even as US solar and storage growth accelerates nationwide.

Upfront costs for floating solar have typically been slightly more expensive than for its land-based counterparts. The panels essentially sit on a sort of raft that’s tethered to the bottom of the body of water. But floatovoltaics come with unique benefits, complementing emerging ocean and river power approaches in water-based energy. Hotter temperatures make it harder for solar panels to produce as much power from the same amount of sunshine. Luckily, sitting atop water has a cooling effect, which allows the panels to generate more electricity than panels on land. That makes floating solar more efficient and makes up for higher installation costs over time.

And while solar in general has already become the cheapest electricity source globally, it’s pretty land-hungry, so complementary options like wave energy are drawing interest worldwide. A solar farm might take up 20 times more land than a fossil fuel power plant to produce a gigawatt of electricity. Solar projects in the US have already run into conflict with some farmers who want to use the same land, for example, and with some conservationists worried about the impact on desert ecosystems.

Related News

• Electricity Forum News

• Renewable Energy News

Clean Electricity Standard drives Biden's infrastructure, grid decarbonization, and utility mandates, leveraging EPA regulation, renewables, nuclear, and carbon capture via reconciliation to reach 80% clean power by 2030 amid partisan Congress.

Key Points

A federal mandate to reach 80% clean U.S. power by 2030 using incentives and EPA rules to speed grid decarbonization.

✅ Targets 80% clean electricity by 2030 via Congress or reconciliation

✅ Mix of renewables, nuclear, gas with carbon capture allowed

✅ Backup levers: EPA rules, incentives, utility planning shifts

The true measure of President Biden’s climate ambition may be the clean electricity standard he tucked into his massive $2.2 trillion infrastructure spending plan.

Its goal is striking: 80% clean power in the United States by 2030.

The details, however, are vague. And so is Biden’s plan B if it fails—an uncertainty that’s worrisome to both activists and academics. The lack of a clear backup plan underscores the importance of passing a clean electricity standard, they say.

If the clean electricity standard doesn’t survive Congress, it will put pressure on the need to drive climate policy through targeted spending, said John Larsen, a power system analyst with the Rhodium Group, an economic consulting firm.

“I don’t think the game is lost at all if a clean electricity standard doesn’t get through in this round,” Larsen said. “But there’s a difference between not passing a clean electricity standard and passing the right spending package.”

In his few months in office, Biden has outlined plans to bring the United States back into the international Paris climate accord, pause oil and gas leasing on public lands, boost the electric vehicle market, and target clean energy investments in vulnerable communities, including plans to revitalize coal communities across the country, most affected by climate change.

But those are largely executive orders and spending proposals—even as early assessments show mixed results from climate law—and unlikely to last beyond his administration if the next president favors fossil fuel usage over climate policy. The clean electricity standard, which would decarbonize 80% of the electrical grid by 2030, is different.

It transforms Biden’s climate vision from a goal into a mandate. Passing it through Congress makes it that much harder for a future administration to undo. If Biden is in office for two terms, the United States would see a rate of decarbonization unparalleled in its history that would set a new bar for most of the world’s biggest economies.

But for now, the clean electricity standard faces an uncertain path through Congress and steep odds to getting enacted. That means there’s a good chance the administration will need a plan B, observers said.

Exactly what kind of climate spending can pass Congress is the very question the White House and congressional Democrats will be working on in the next few months, including upgrades to an aging power grid that affect renewables and EVs, as the infrastructure bill proceeds through Congress.

Negotiations are fraught already. Congress is almost evenly split between a party that wants to curtail the use of fossil fuels and another that wants to grow them, and even high energy prices have not necessarily triggered a green transition in the marketplace.

Senate Minority Leader Mitch McConnell (R-Ky.) said last week that “100% of my focus is on stopping this new administration.” He made similar comments at the start of the Obama administration and blocked climate policy from getting through Congress. He also said last week that no Republican senators would vote for Biden’s infrastructure spending plan.

A clean electricity standard has been referred to as the “backbone” of Biden’s climate policy—a way to ensure his policies to decarbonize the economy outlast a future president who would seek to roll back his climate work. Advocates say hitting that benchmark is an essential milestone in getting to a carbon-free grid by 2035. Much of President Obama’s climate policy, crafted largely through regulations and executive orders, proved vulnerable to President Trump’s rollbacks.

Biden appears to have learned from those lessons and wants to chart a new course to mitigate the worst effects of climate change. He’s using his majority in the House and Senate to lock in whatever he can before the 2022 midterms, when Democrats are expected to lose the House.

To pass a clean electricity standard, virtually every Democrat must be on board, and even then, the only chance of success is to pass a bill through the budget reconciliation process that can carry a clean electricity standard. Some Senate Democrats have recently hinted that they were willing to split the bill into pieces to get it through, while others are concerned that although this approach might win some GOP support on traditional infrastructure such as roads and bridges, it would isolate the climate provisions that make up more than half of the bill.

The most durable scenario for rapid electricity-sector decarbonization is to lock in a bipartisan clean electricity standard into legislation with 60 votes in the Senate, said Mike O’Boyle, the director of electricity policy for Energy Innovation. Because that’s highly unlikely—if not impossible—there are other paths that could get the United States to the 80% goal within the next decade.

“The next best approach is to either, or in combination, pursue EPA regulation of power plant pollution from existing and new power plants as well as to take a reconciliation-based approach to a clean electricity standard where you’re basically spending federal dollars to provide incentives to drive clean electricity deployment as opposed to a mandate per se,” he said.

Either way, O’Boyle said the introduction of the clean electricity standard sets a new bar for the federal government that likely would drive industry response even if it doesn’t get enacted. He compared it to the Clean Power Plan, Obama’s initiative to limit power plant emissions. Even though the plan never came to fruition, because of a Clean Power Plan rollback, it left a legacy that continues years later and wasn’t negated by a president who prioritized fossil fuels over the climate, he said.

“It never got enacted, but it still created a titanic shift in the way utilities plan their systems and proactively reposition themselves for future carbon regulation of their electricity systems,” O’Boyle said. “I think any action by the Biden administration or by Congress through reconciliation would have a similar catalytic function over the next couple years.”

Some don’t think a clean electricity standard has a doomed future. Right now, its provisions are vague. But they can be filled in in a way that doesn’t alienate Republicans or states more hesitant toward climate policy, said Sally Benson, an engineering professor at Stanford University and an expert on low-carbon energy systems. The United States is overdue for a federal mandate that lasts through multiple administrations. The only way to ensure that happens is to get Republican support.

She said that might be possible by making the clean electricity standard more flexible. Mandate the goals, she said, not how states get there. Going 100% renewable is not going to sell in some states or with some lawmakers, she added. For some regions, flexibility will mean keeping nuclear plants open. For others, it would mean using natural gas with carbon capture, Benson said.

While it might not meet the standards some progressives seek to end all fossil fuel usage, it would have a better chance of getting enacted and remaining in place through multiple presidents, she said. In fact, a clean electricity standard would provide a chance for carbon capture, which has been at the center of Republican climate policy proposals. Benson said carbon capture is not economical now, but the mandate of a standard could encourage investments that would drive the sector forward more rapidly.

“If it’s a plan that people see as shutting the door to nuclear or to natural gas plus carbon capture, I think we will face a lot of pushback,” she said. “Make it an inclusive plan with a specific goal of getting to zero emissions and there’s not one way to do it, meaning all renewables—I think that’s the thing that could garner a lot of industrial support to make progress.”

In addition to industry, Biden’s proposed clean electricity standard would drive states to do more, said Larsen of the Rhodium Group. Several states already have their own version of a clean energy standard and have driven much of the national progress on carbon emissions reduction in the last four years, he said. Biden has set a new benchmark that some states, including those with some of the biggest economies in the United States, would now likely exceed, he said.

“It is rare for the federal government to get out in front of leading states in clean energy policy,” he said. “This is not usually how climate policy diffusion works from the state level to the federal level; usually it’s states go ahead and the federal government adopts something that’s less ambitious.”

Related News

• Electricity Forum News

• Energy Policy News

The Netherlands grid crisis exposes how rapid renewable energy growth is straining transmission capacity. Solar, wind, and electric vehicle demand are overloading networks, forcing officials to urge reduced peak-time power use and accelerate national grid modernization plans.

Main Points

The Netherlands grid crisis refers to national electricity congestion caused by surging renewable energy generation and rising consumer demand.

✅ Grid congestion from rapid solar and wind expansion

✅ Strained transmission and distribution capacity

✅ National investment in smart grid upgrades

The Dutch government is urging households to reduce electricity consumption between 16:00 and 21:00 — a signal that the country’s once-stable power grid is under serious stress. The call comes amid an accelerating shift to wind and solar power that is overwhelming transmission infrastructure and creating “grid congestion” across regions, as seen in Nordic grid constraints this year.

In a government television campaign, a narrator warns: “When everyone uses electricity at the same time, our power grid can become overloaded. That could lead to failures — so please try to use less electricity between 4 pm and 9 pm.” The plea reflects a system where supply occasionally outpaces the grid’s ability to distribute it, with some regions abroad issuing summer blackout warnings already.

According to Dutch energy firm Eneco’s CEO, Kys-Jan Lamo, the root of the problem lies in the mismatch between modern renewable generation and a grid built for centralized fossil fuel plants. He notes that 70% of Eneco’s output already comes from solar and wind, and this “grid congestion is like traffic on the power lines.” Lamo explains:

“The grid congestion is caused by too much demand in some areas of the network, or by too much supply being pushed into the grid beyond what the network can carry.”

He adds that many of the transmission lines in residential areas are narrow — a legacy of when fewer and larger power plants fed electricity through major feeder lines, underscoring grid vulnerabilities seen elsewhere today. Under the new model, renewable generation occurs everywhere: “This means that electricity is now fed into the grid even in peripheral areas with relatively fine lines — and those lines cannot always cope.”

Experts warn that resolving these issues will demand years of planning and immense investment in smarter grid infrastructure over the coming years. Damien Ernst, an electrical engineering professor at Liège University and respected voice on European grids, states that the Netherlands is experiencing a “grid crisis” brought on by “insufficient investment in distribution and transmission networks.” He emphasizes that the speed of renewable deployment has outpaced the grid’s capacity to absorb it.

Eneco operates a “virtual power plant” control system — described by Lamo as “the brain we run” — that dynamically balances supply and demand. During periods of oversupply, the system can curtail wind turbines or shut down solar panels. Conversely, during peak demand, the system can throttle back electricity provision to participating customers in exchange for lower tariffs. However, these techniques only mitigate strain — they cannot replace the need for physical upgrades or bolster resilience to extreme weather outages alone.

The bottleneck has begun limiting new connections: “Consumers often want to install heat pumps or charge electric vehicles, but they increasingly find it difficult to get the necessary network capacity,” Lamo warns. Businesses too are struggling. “Companies often want to expand operations, but cannot get additional capacity from grid operators. Even new housing developments are affected, since there’s insufficient infrastructure to connect whole communities.”

Currently, thousands of businesses are queuing for network access. TenneT, the national grid operator, estimates that 8,000 firms await initial connection approval, and another 12,000 seek to increase their capacity allocations. Stakeholders warn that unresolved congestion risks choking economic growth.

According to Kys-Jan Lamo: “Looking back, almost all of this could have been prevented.” He acknowledges that post-2015 climate commitments placed heavy emphasis on adding generation and on grid modernization costs more broadly, but “we somewhat underestimated the impact on grid capacity.”

In response, the government has introduced a national “Grid Congestion Action Plan,” aiming to accelerate approvals for infrastructure expansions and to refine regulations to promote smarter grid use. At the same time, feed-in incentives for solar power are being scaled back in some regions, and certain areas may even impose charges to integrate new solar systems into the grid.

The scale of what’s needed is vast. TenneT has proposed adding roughly 100,000 km of new power lines by 2050 and investing in doubling or tripling existing capacity in many areas. However, permit processes can take eight years before construction begins, and many projects require an additional two years to complete. As Lamo points out, “the pace of energy transition far exceeds the grid’s existing capacity — and every new connection request simply extends waiting lists.”

Unless grid expansion keeps up, and as climate pressures intensify, the very clean energy future the Netherlands is striving for may remain constrained by the physics of distribution.

Related Articles

• Electricity Forum World News

California Iron-Air Battery Storage Project delivers 100-hour long-duration energy storage, supported by a $30 CEC grant, using Form Energy technology at a PG&E substation to boost grid reliability, integrate renewables, and cut fossil reliance.

Key Points

California's 5 MW/500 MWh iron-air battery delivers 100-hour discharge, boosting reliability and renewable integration.

✅ 5 MW/500 MWh iron-air system at a PG&E substation

✅ 100-hour multiday storage enhances grid reliability

✅ CEC $30M grant backs non-lithium, long-duration tech

The California Energy Commission (CEC) has given the green light to a $30 million grant to Form Energy for the construction of an extraordinary long-duration energy storage project that will offer an unparalleled 100 hours of continuous grid discharge.

This ambitious endeavor involves the development of a 5-megawatt (MW) / 500 megawatt-hour iron-air battery storage project, representing the largest long-duration energy storage initiative in California. It also marks the state's inaugural utilization of this cost-effective technology, and joins ongoing procurements by utilities such as San Diego Gas & Electric to expand storage capacity statewide. The project's location is set at a substation owned by the Pacific Gas and Electric Company in Mendocino County, where it will supply power to local residents. The system is scheduled to commence operation by the conclusion of 2025, contributing to grid reliability and showcasing solutions aligned with the state's climate and clean energy objectives.

CEC Chair David Hochschild commented, "A multiday battery system is transformational for California's energy mix. This project will enhance our ability to harness excess renewables during nonpeak hours for use during peak demand, especially as we work toward a goal of 100 percent clean electricity."

This grant award represents one of three approvals within the framework of the CEC's Long-Duration Energy Storage program, a part of Governor Gavin Newsom's historic multi-billion-dollar commitment to combat climate change. This program fosters investment in the demonstration of non-lithium-ion technologies across the state, including green hydrogen microgrids, contributing to the creation of a diverse portfolio of energy storage technologies.

As of August, California had 6,600 MW of battery storage actively deployed statewide, a trend mirrored in regions like Ontario as well, operating within the prevailing industry standard of 4 to 6 hours of discharge. By year-end, this figure is projected to expand to 8,600 MW. Longer-duration storage, spanning from 8 to 100 hours, holds the potential to expedite the state's shift away from fossil fuels while reinforcing grid stability. California estimates that more than 48 gigawatts (GW) of battery storage and 4 GW of long-duration storage will be requisite to achieve the objective of 100 percent clean electricity by 2045.

Energy storage serves as a cornerstone of California's clean energy future, offering a means to capture and store surplus power generated by renewable resources, including emerging virtual power plant models that aggregate distributed assets. The state's battery infrastructure plays a pivotal role during the summer when electricity demand peaks in the early evening hours as solar resources decline, preceding the later surge in wind energy.

Iron-air battery technology operates on the principle of reversible rusting. These battery cells contain iron and air electrodes and are filled with a water-based, nonflammable electrolyte solution. During discharge, the battery absorbs oxygen from the air, converting iron metal into rust. During the charging phase, the application of an electrical current converts the rust back into iron, releasing oxygen. This technology is cost-competitive compared to lithium-ion battery production and complements broader clean energy BESS initiatives seen in New York.

Related News

• Electricity Forum News

• EV Infrastructure News

New York Offshore Wind Expansion adds Equinor's Empire Wind 2 and Beacon Wind, boosting megawatts, turbines, and grid connections for Long Island and Queens, with jobs, assembly at South Brooklyn Marine Terminal, and clean energy.

Key Points

A statewide initiative proposing new Equinor and partner projects to scale offshore wind capacity, jobs, and grid links.

✅ Adds 2,490 MW via Empire Wind 2 and Beacon Wind

✅ Connects to Nassau County and Queens grids for reliability

✅ Creates 3,000+ NY jobs with South Brooklyn Marine Terminal work

Scores more 600-foot tall wind turbines would be built off Jones Beach under a new proposal.

Norwegian energy conglomerate Equinor has bid to create another 2,500 megawatts of offshore wind power for New York state and Long Island, where offshore wind sites are being evaluated, with two projects. One, which would connect to the local electric grid in Nassau County, would more than double the number of turbines off Long Island to some 200. A second would be built around 50 miles from Montauk Point and connect to the state grid in Queens. The plan would also include conducting assembly work in Brooklyn.

In disclosures Tuesday in response to a state request for proposals, Equinor said it would bolster its already state-awarded, 819-megawatt Empire Wind project off Long Island’s South Shore with another called Empire Wind 2 that will add 1,260 megawatts. Turbines of at least 10 megawatts each would mean that the prior project’s 80 or so turbines could be joined by another 120. Equinor’s federally approved lease area off Long Island encompasses some 80,000 acres, starting 15 miles due south of Long Beach and extending east and south.

Equinor on Tuesday also submitted plans to offer a second project called Beacon Wind that would be built 50 miles from Montauk Point, off the Massachusetts South Coast area. It would be 1,230 megawatts and connect through Long Island Sound to Queens.

Equinor said its latest energy projects would generate more than 3,000 New York jobs, including use of the South Brooklyn Marine Terminal for “construction activities” and an operations and maintenance base.

The new proposals came in response to a New York State Energy Research and Development Authority bid request for renewable projects in the state. In a statement, Siri Espedal Kindem, president of Equinor Wind U.S., said the company’s plans would include “significant new benefits for New York – from workforce training, economic development, and community benefits – alongside a tremendous amount of homegrown, renewable energy.”

Meanwhile, Denmark-based Orsted, working with New England power company Eversource, has also submitted plans for a new offshore wind project called Sunrise Wind 2, a proposal that includes “multiple bids” that would create “hundreds of new jobs, and infrastructure investment,” according to a company statement. Con Edison Transmission will also work to develop transmission facilities for that project, the companies said.

Orsted and Eversource already have contracts to develop a 130-megawatt wind farm for LIPA to serve the South Fork, and an 880-megawatt wind farm for the state. All of its hundreds of turbines would be based in a lease area off the coast of Massachusetts and Rhode Island, where Vineyard Wind has progressed as a key project.

“Sunrise Wind 2 will create good-paying jobs for New York, support economic growth, and further reduce emissions while delivering affordable clean energy to Long Island and the rest of New York,” Joe Nolan, executive vice president for Eversource, said in a statement.

Related News

• Electricity Forum News

• Renewable Energy News