China To Generate Electricity From Compressed Air


China To Generate Electricity From Compressed Air

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China Compressed-Air Energy Storage enables grid flexibility using salt caverns in Jiangsu, delivering long-duration storage for wind and solar, 60 MW capacity, dispatchable power, and low-cost, safe, round-the-clock clean energy integration.

 

Key Points

Stores off-peak power by compressing air in salt caverns, then drives turbines on demand to balance renewables.

✅ 60 MW Jintan plant connects to grid; commercial CAES milestone

✅ Uses salt caverns; low-cost long-duration storage; high safety

✅ Balances wind and solar; improves grid flexibility and reliability

 

China is set to connect its first commercial compressed-air energy storage plant to the grid as it seeks more ways to harness fast-growing clean power resources, including new hydropower alongside other long-duration options such as gravity power technologies for around-the-clock use.

China Huaneng Group Co. said its Jiangsu Jintan Salt Cave project recently underwent four days of successful trials and is now ready for commercial operations. The 60-megawatt plant will be the largest compressed air energy storage plant built anywhere in the world since 1991, and the first in China outside of small-scale technology demonstration projects, as China's electricity demand patterns remain in flux, according to BloombergNEF.

The plant will use electricity at night when demand is low to pump air into an underground salt cavern. Then, when demand is high during the day, it can release the compressed air at high enough pressure to spin a turbine and produce electricity, aligning with projections that 60% electricity by 2060 could be reached according to industry outlooks.

Underground compressed air is considered one of the least costly forms of long-term energy storage and has low safety concerns, according to BloombergNEF. But its reliance on certain topographical features such as underground caverns may limit wider deployment, a challenge shared by other regions weighing large-scale storage options for reliability. It’s gained a foothold in China, with nearly four gigawatts of projects in the pipeline, while there are less than two gigawatts combined planned in the rest of the world. Shandong province said just this week in this year's work plan that it would build three projects using the technology.

The Jintan salt caves in Jiangsu, China’s second-biggest provincial economy just north of Shanghai, can store about 10 million cubic meters of gas, enough to power four gigawatts of compressed air plants, according to a Science and Technology Daily report from last year. 

Energy storage is a key part of China’s plan to build a larger and more flexible grid as it tries to peak carbon emissions before 2030 and zero them out before 2060, alongside continued nuclear energy development to stabilize baseload supply. The country is adding a world-leading amount of wind and solar power every year, but their intermittency strains grids that need to be able to deliver electricity all the time, spurring interest in green hydrogen as a flexible complement. China has set targets of 30 gigawatts of new-energy storage by 2025 and 120 gigawatts of pumped hydro storage by 2030. 

 

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Ukraine sees new virtue in wind power: It's harder to destroy

Ukraine Wind Energy Resilience shields the grid with wind power along the Black Sea, dispersing turbines to withstand missile attacks, accelerate clean energy transition, aid EU integration, and strengthen energy security and rapid recovery.

 

Key Points

A strategy in Ukraine using wind farms to harden the grid, ensure clean power, and speed recovery from missile strikes.

✅ Distributed turbines reduce single-point-of-failure risk

✅ Faster repair of substations and lines than power plants

✅ Supports EU-aligned clean energy and grid security goals

 

The giants catch the wind with their huge arms, helping to keep the lights on in Ukraine — newly built windmills, on plains along the Black Sea.

In 15 months of war, Russia has launched countless missiles and exploding drones at power plants, hydroelectric dams and substations, trying to black out as much of Ukraine as it can, as often as it can, even amid talk of limiting attacks on energy sites that has surfaced, in its campaign to pound the country into submission.

The new Tyligulska wind farm stands only a few dozen miles from Russian artillery, but Ukrainians say it has a crucial advantage over most of the country’s grid, helping stabilize the system even as electricity exports have occasionally resumed under fire.

A single, well-placed missile can damage a power plant severely enough to take it out of action, but Ukrainian officials say that doing the same to a set of windmills — each one tens of meters apart from any other — would require dozens of missiles. A wind farm can be temporarily disabled by striking a transformer substation or transmission lines, but these are much easier to repair than power plants.

“It is our response to Russians,” said Maksym Timchenko, CEO of DTEK Group, the company that built the turbines in the southern Mykolaiv region — the first phase of what is planned as Eastern Europe’s largest wind farm. “It is the most profitable and, as we know now, most secure form of energy.”

Ukraine has had laws in place since 2014 to promote a transition to renewable energy, both to lower dependence on Russian energy imports, with periods when electricity exports resumed to neighbors, and because it was profitable. But that transition still has a long way to go, and the war makes its prospects, like everything else about Ukraine’s future, murky.

In 2020, 12% of Ukraine’s electricity came from renewable sources — barely half the percentage for the European Union. Plans for the Tyligulska project call for 85 turbines producing up to 500 megawatts of electricity. That’s enough for 500,000 apartments — an impressive output for a wind farm, but less than 1% of the country’s prewar generating capacity.

After the Kremlin began its full-scale invasion of Ukraine in February 2022, the need for new power sources became acute, prompting deliveries such as a mobile gas turbine power plant to bolster capacity. Russia has bombarded Ukraine’s power plants and cut off delivery of the natural gas that fueled some of them.

Russian occupation forces have seized a large part of the country’s power supply, and Russia has built power lines to reactivate the Zaporizhzhia plant in occupied territory, ensuring that its output does not reach territory still held by Ukraine. They hold the single largest generator, the 5,700-megawatt Zaporizhzhia Nuclear Power Plant, which has been damaged repeatedly in fighting and has stopped transmitting energy to the grid, with UN inspectors warning of mines at the site during recent visits. They also control 90% of Ukraine’s renewable energy plants, which are concentrated in the southeast.

The postwar recovery plans Ukraine has presented to supporters including the European Union, which it hopes to join, feature a major new commitment to clean energy, even as a controversial proposal on Ukraine’s nuclear plants continues to stir debate.

 

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UK Electric cars will cost more if Sunak fails to strike Brexit deal

UK-EU EV Tariffs 2024 threaten a 10% levy under Brexit rules of origin, raising electric vehicle prices, straining battery supply chains, and risking a price war for manufacturers, consumers, and climate targets across automotive market.

 

Key Points

Tariffs from Brexit rules of origin imposing 10% duties on EVs, raising UK prices amid battery and supply chain gaps.

✅ 10% tariffs if rules of origin thresholds are unmet

✅ Price hikes on UK EVs, led by Tesla Model Y

✅ Battery supply gaps strain UK and EU manufacturers

 

Electric cars will cost British motorists an extra £6,000 if Rishi Sunak fails to strike a post-Brexit deal with the EU on tariffs, industry bosses have told The Independent.

UK manufacturers warned of a “devastating price war” on consumers, echoing UK concern over higher EV prices across the market – threatening both the electric vehicle (EV) market and the UK’s climate change commitments – if tariffs are enforced in January 2024.

In the latest major Brexit row, the Sunak government is pushing the European Commission to agree to delay the costly new rules, even as the UK readies for rising EV adoption across the economy, set to come in at the start of next year as part of Boris Johnson’s Brexit trade deal.

But Brussels has shown no sign it is willing to budge – even as Washington has announced a 100% tariff on Chinese-made EVs this year – leaving business leaders in despair about the impact of 10 per cent tariffs on exports on Britain’s car industry.

The tariffs would increase the price of a new Tesla Model Y – the UK’s most popular electric vehicle – by £6,000 or more, according to a new report by the Independent Commission on UK-EU Relations.

“For the sake of our economy and our planet, the government has a responsibility to get round the table with the EU, fix this and fix the raft of other issues with the Brexit deal,” said commission director Mike Buckley.

The new rules of origin agreed in the Brexit trade and cooperation agreement (TCA) require 45 per cent of an electric car’s value, as the age of electric cars accelerates, to originate in the UK or EU to qualify for trade without tariffs.

The British auto industry has warned the 2024 rules pose an “existential threat” to sales because of the lack of domestic batteries to meet the rules, even as EV adoption within the decade is widely expected to surge – pleading for a delay until 2027.

The VDA – the lobby group for Germany’s car industry – has also called for an “urgent” move to delay, warning that the rules create a “significant competitive disadvantage” for European carmarkers in relation to China, where tariffs on Chinese EVs are reshaping global trade, and other Asian competitors.

The new report by the Independent Commission on UK-EU Relations – backed by the manufacturers’ body Make UK and the British Chamber of Commerce – warns that the January tariffs will immediately push up costs and hit electric vehicle sales, despite UK EV inquiries surging during the fuel supply crisis in recent years.

 

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Solar Is Now 33% Cheaper Than Gas Power in US, Guggenheim Says

US Renewable Energy Cost Advantage signals cheaper utility-scale solar and onshore wind versus natural gas, with LCOE declines, tax credits, and climate policy cutting electricity costs for utilities and grids across the United States.

 

Key Points

Cheaper solar and wind than natural gas, driven by LCOE drops, tax credits, and policy, lowering US electricity costs.

✅ Utility-scale solar is about one-third cheaper than gas

✅ Onshore wind costs roughly 44 percent less than natural gas

✅ Policy and tax credits accelerate renewables and cut power prices

 

Natural gas’s dominance as power-plant fuel in the US is fading fast as the cost of electricity generated by US wind and solar projects tumbles and as wind and solar surpass coal in the generation mix, according to Guggenheim Securities.

Utility-scale solar is now about a third cheaper than gas-fired power, while onshore wind is about 44% less expensive, Guggenheim analysts led by Shahriar Pourreza said Monday in a note to clients, a dynamic consistent with falling wholesale power prices in several markets today. 

“Solar and wind now present a deflationary opportunity for electric supply costs,” the analysts said, which “supports the case for economic deployment of renewables across the US,” as the country moves toward 30% wind and solar and one-fourth of total generation in the near term.

Gas prices have surged amid a global supply crunch after Russia’s invasion of Ukraine, while tax-credit extensions and sweeping US climate legislation have brought down the cost of wind and solar, even as renewables surpassed coal in 2022 nationwide. Renewables-heavy utilities like NextEra Energy Inc. and Allete Inc. stand to benefit, and companies that can boost spending on wind and solar, as wind, solar and batteries dominate the 2023 pipeline, will also see faster growth, Guggenheim said.
 

 

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Court Sees If Church Solar Panels Break Electricity Monopoly

NC WARN Solar Case tests third-party solar rights as North Carolina Supreme Court reviews Utilities Commission fines over a Greensboro church's rooftop power deal, challenging Duke Energy's monopoly, onsite electricity sales, and potential rate impacts.

 

Key Points

A North Carolina Supreme Court test of third-party solar could weaken Duke Energy's monopoly and change utility rules.

✅ NC Supreme Court weighs Utilities Commission penalty on NC WARN

✅ Case could permit onsite third-party solar sales statewide

✅ Outcome may pressure Duke Energy's monopoly and rates

 

North Carolina's highest court is taking up a case that could force new competition on the state's electricity monopolies.

The state Supreme Court on Tuesday will consider the Utilities Commission's decision to fine clean-energy advocacy group NC WARN for putting solar panels on a Greensboro church's rooftop and then charging it below-market rates for power.

The commission told NC WARN that it was producing electricity illegally and fined the group $60,000. The group said it was acting privately and appealed to the high court.

If the group prevails, it could put new pressure on Duke Energy's monopoly, which has seen an oversubscribed solar solicitation in recent procurements. State regulators say a ruling for NC WARN would allow companies to install solar equipment and sell power on site, shaving away customers and forcing Duke Energy to raise rates on everyone else.

#google#

That's because if NC WARN's deal with Faith Community Church is allowed, the precedent could open the door for others to lure away from Duke Energy, as debates over how solar owners are paid continue, "the customers with the highest profit potential, such as commercial and industrial customers with large energy needs and ample rooftop space," attorney Robert Josey Jr. wrote in a court filing.

Losing those power sales would force the country's No. 2 electricity company to make it up by charging remaining customers more to cover the cost of all of its power plants, transmission lines and repair crews, a dynamic echoed in New England's grid upgrade debates as solar grows, wrote Josey, an attorney for the Public Staff, the state's official utilities consumer advocate.

The dispute is whether NC WARN is producing electricity "for the public," which would mean it's intruding on the territory of the publicly regulated monopoly utility, or whether the move was allowed because it was a private power deal with the church alone.

 

NC WARN installed the church's power panels in 2015 as part of what it described as a test case, amid wider debates like Nova Scotia's delayed solar charge for customers, challenging Duke Energy's monopoly position to generate and sell electricity.

North Carolina was one of nine states that as of last year explicitly disallowed residential customers from buying electricity generated by solar panels on their roof from a third party that owns the system, even as Maryland opens solar subscriptions more broadly, according to the North Carolina Clean Energy Technology Center. State law allows purchased or leased solar panels, but not payments simply for the power they generate.

NC WARN's goals included "reducing the effects of Duke Energy's monopoly control that has such negative impacts on power bills, clean air and water, and climate change," the church's pastor, Rev. Nelson Johnson, said in a statement the same day the clean-energy group asked state regulators to clear the plan.

Instead, the North Carolina Utilities Commission ruled the arrangement violated the state's system of legal electricity monopolies and hit the group with nearly $60,000 in fines, which would be suspended if the church's payments were refunded with interest and the solar equipment donated. The group has set aside the money and will donate the gear if it loses the Supreme Court case, NC WARN Executive Director Jim Warren said.

NC WARN's three-year agreement saw the group mount a rooftop solar array for which the church would pay about half the average retail electricity price, state officials said. The agreement states plainly that it is not a contract for the sale or lease of the $20,000 solar system, the church never owns the panels, and the low electricity price means its payback for the equipment would take 60 years, Josey wrote.

"Clearly, the only thing of value (the church) is obtaining for its payments under this agreement is the electricity created," he wrote.

In court filings, the group's attorneys have stuck to the argument that NC WARN isn't selling to the public because the deal involved a single customer only.

The deal "is not open to any other member of the public ... A private, bargained-for contract under which only one party receives electricity is not a sale of electricity 'to or for the public,' " attorney Matthew Quinn wrote to the court.

 

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Space-based solar power, once for science fiction, is gaining interest.

Space-Based Solar Power enables wireless energy transfer from orbital solar arrays, using microwave beaming to rectennas on Earth, delivering clean baseload power beyond weather and night limits, as demonstrated by Caltech and NASA.

 

Key Points

Space-based solar power beams microwaves from arrays to rectennas, delivering clean electricity beyond weather and night.

✅ Caltech demo proved wireless power transfer in space.

✅ Microwaves beam to rectennas for grid-scale clean energy.

✅ Operates above clouds, enabling continuous baseload supply.

 

Ali Hajimiri thinks there’s a better way to power the planet — one that’s not getting the attention it deserves. The Caltech professor of electrical engineering envisages thousands of solar panels floating in space, unobstructed by clouds and unhindered by day-night cycles, effectively generating electricity from the night sky for continuous delivery, wirelessly transmitting massive amounts of energy to receivers on Earth.

This year, that vision moved closer to reality when Mr. Hajimiri, together with a team of Caltech researchers, proved that wireless power transfer in space was possible: Solar panels they had attached to a Caltech prototype in space successfully converted electricity into microwaves and beamed those microwaves to receivers, as a demonstration of beaming power from space to devices about a foot away, lighting up two LEDs.

The prototype also beamed a tiny but detectable amount of energy to a receiver on top of their lab’s building in Pasadena, Calif. The demonstration marks a first step in the wireless transfer of usable power from space to Earth, and advances in low-cost solar batteries could help store and smooth that power flow — a power source that Mr. Hajimiri believes will be safer than direct sun rays. “The beam intensity is to be kept less than solar intensity on earth,” he said.

Finding alternative energy sources is one of the topics that will be discussed by leaders in business, science and public policy, including wave energy, during The New York Times Climate Forward event on Thursday. The Caltech demonstration was a significant moment in the quest to realize space-based solar power, amid policy moves such as a proposed tenfold increase in U.S. solar that would remake the U.S. electricity system — a clean energy technology that has long been overshadowed by other long-shot clean energy ideas, such as nuclear fusion and low-cost clean hydrogen.

If space-based solar can be made to work on a commercial scale, said Nikolai Joseph, a NASA Goddard Space Flight Center senior technology analyst, and integrate with peer-to-peer energy sharing networks, such stations could contribute as much as 10 percent of global power by 2050.

The idea of space-based solar energy has been around since at least 1941, when the science-fiction writer Isaac Asimov set one of his short stories, “Reason,” on a solar station that beamed energy by microwaves to Earth and other planets.

In the 1970s, when a fivefold increase in oil prices sparked interest in alternative energy, NASA and the Department of Energy conducted the first significant study on the topic. In 1995, under the direction of the physicist John C. Mankins, NASA took another look and concluded that investments in space-launch technology were needed to lower the cost and move closer to cheap abundant electricity before space-based solar power could be realized.

“There was never any doubt about it being technically feasible,” said Mr. Mankins, now president of Artemis Innovation Management Solutions, a technology consulting group. “The cost was too prohibitive.”

 

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Offshore chargepoint will power vessels with wind turbine electricity

Offshore Wind Vessel Charging System enables renewable energy offshore charging from wind turbines, delivering clean power to electric vessels and crew transfer ships, boosting range, safety, and net zero maritime operations with reliable, efficient infrastructure.

 

Key Points

A turbine-mounted offshore charger delivering renewable power to electric vessels, extending range and improving safety.

✅ Turbine-mounted, field-proven offshore charging interface

✅ Delivers 100% renewable electricity to electric vessels

✅ Accelerates net zero, cuts maritime fossil fuel use

 

An offshore charging system will power vessels with 100% renewably generated electricity from wind turbines, aligning with projects like battery-electric high-speed ferries now advancing in the United States.

The system, developed by Teesside marine electrical engineering firm MJR Power and Automation, will be presented at the Global Offshore Wind event in Manchester (21-22 June), alongside interest in EV energy storage for buildings that could complement offshore charging solutions.

Known as the Offshore Wind On-Turbine Electrical Vessel Charging System, MJR says the chargepoints will provide efficient, safe and reliable transfer of clean power for crew vehicles and other offshore support vessels, while emerging vehicle-to-grid capacity on wheels concepts highlight the wider role of electric fleets.

“This innovation will break down the existing range barriers and increase the uptake by vessel owners and operators, as demonstrated by electric ships on the B.C. coast moving to fully electric and green propulsion systems for retrofit and new-build vessels,” an announcement said.

“In combination with other field-proven technologies, the charging system will be an important part for government and offshore wind owners and operators to achieve their net zero maritime operations targets, and switch away from fossil fuels, complemented by port initiatives such as all-electric berth at London Gateway now under development. The ability to charge when in the field will significantly accelerate adoption of current emission-free propulsion systems, which will be a major asset for the decarbonisation of the global maritime sector.”

The firm recently announced that construction and in-house testing of the system had been completed. The development project was part of the Clean Maritime Demonstration Competition, funded by the Department for Transport and delivered in partnership with Innovate UK, reflecting wider interest in reversing the charge to the grid for resilient energy systems.

MJR electrical engineer Mohammed Latif said: “Our system will be absolutely crucial in helping governments to deliver on their net zero carbon targets, supported by plans like new UK-Europe interconnectors that strengthen clean energy supply, and I am looking forward to demonstrating how it works and the benefits it offers.”

As part of the project, MJR Power and Automation led a consortium of partners – Ore Catapult, Xceco, Artemis Technologies and Tidal Transit – that all provided expertise.

 

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