Harbour Air's electric aircraft a high-flying example of research investment

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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U.S. Solar-Plus-Storage Growth 2021-2024 highlights rising battery storage co-location with solar PV, grid flexibility, RTO/ISO market signals, and ITC incentives, enabling peak shaving, firming renewable output, and reliable night-time power.

Key Points

Summary of U.S. plans pairing battery storage with solar PV, guided by RTO/ISO markets, grid needs, and ITC policy.

✅ 9.4 GW (63%) co-located with solar PV by 2024

✅ 97% of standalone capacity sited in RTO/ISO regions

✅ ITC improves project economics and grid services revenue

Of the 14.5 gigawatts (GW) of battery storage power capacity planned to come online amid anticipated growth in solar and storage in the United States from 2021 to 2024, 9.4 GW (63%) will be co-located with a solar photovoltaic (PV) solar-plus-storage power plant, based on data reported to us and published in our Annual Electric Generator Report. Another 1.3 GW of battery storage will be co-located at sites with wind turbines or fossil fuel-fired generators, such as natural gas-fired plants. The remaining 4.0 GW of planned battery storage will be located at standalone sites.

Historically, most U.S. battery systems have been located at standalone sites. Of the 1.5 GW of operating battery storage capacity in the United States at the end of 2020, 71% was standalone, and 29% was located onsite with other power generators.

Most standalone battery energy storage sites have been planned or built in power markets that are governed by regional transmission organizations (RTOs) and independent system operators (ISOs). RTOs and ISOs can enforce standard market rules that lay out clear revenue streams for energy storage projects in their regions, which promotes the deployment of battery storage systems. Of the utility-scale pipeline battery systems announced to come online from 2021 to 2024, 97% of the standalone battery capacity and 60% of the co-located battery capacity are in RTO/ISO regions.

Over 90% of the planned battery storage capacity outside of RTO and ISO regions will be co-located with a solar PV plant. At some solar PV co-located plants, the batteries can charge directly from the onsite solar generator when electricity demand and prices are low. They can then discharge electricity to the grid when peak demand is higher or when solar generation is unavailable, such as at night.

Although factors such as cloud cover can affect solar generation output, solar generators, now the number three renewable source in the U.S., in particular can effectively pair with battery storage because of their relatively regular daily generation patterns. This predictability works well with battery systems because battery systems are limited in how long they can discharge their power capacity before needing to recharge. If paired with a wind turbine, for example, a battery system could go days before having the opportunity to fully recharge.

Another advantage of pairing batteries with renewable generators is the ability to take advantage of tax incentives such as the Investment Tax Credit (ITC), which is available for solar projects, and other favorable government plans supporting deployment.

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Kootenay Lake Electric-Ready Ferry advances clean technology in BC, debuting as a hybrid diesel-electric vessel with shore power conversion planned, capacity and terminal upgrades to cut emissions, reduce wait times, and modernize inland ferry service.

Key Points

Hybrid diesel-electric ferry replacing MV Balfour, boosting capacity, and aiming for full electric conversion by 2030.

✅ Doubles vehicle capacity; runs with MV Osprey 2000 in summer

✅ Hybrid-ready systems installed; shore power to enable full electric

✅ Terminal upgrades at Balfour and Kootenay Bay improve reliability

An electric-ready ferry for Kootenay Lake is scheduled to begin operations in 2023, aligning with first electric passenger flights planned by Harbour Air, the province announced in a Sept. 3 press release.

Construction of the $62.9-million project will begin later this year, which will be carried out by Western Pacific Marine Ltd., reflecting broader CIB-supported ferry investments in B.C. underway.

“With construction beginning here in Canada on the new electric-ready ferry for Kootenay Lake, we are building toward a greener future with made-in-Canada clean technology,” said Catherine McKenna, the federal minister of infrastructure and communities.

The new ferry — which is designed to provide passengers with a cleaner vessel informed by advances in electric ships and more accessibility — will replace and more than double the capacity of the MV Balfour, which will be retired from service.

“This is an exciting milestone for a project that will significantly benefit the Kootenay region as a whole,” said Michelle Mungall, MLA for Nelson-Creston. “The new, cleaner ferry will move more people more efficiently, improving community connections and local economies.”

Up to 55 vehicles can be accommodated on the new ship, and will run in tandem with the larger MV Osprey 2000 to help reduce wait times, a strategy also seen with Washington State Ferries hybrid-electric upgrades, during the summer months.

“The vessel will be fully converted to electric propulsion by 2030, once shore power is installed and reliability of the technology advances for use on a daily basis, as demonstrated by Harbour Air's electric aircraft testing on B.C.'s coast,” said the province.

They noted that they are working to electrify their inland ferry fleet by 2040, as part of their CleanBC initiative.

“The new vessel will be configured as a hybrid diesel-electric with all the systems, equipment and components for electric propulsion,” they said.

Other planned projects include upgrades to the Balfour and Kootenay Bay terminals, and minor dredging has been completed in the West Arm.

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UK Renewable Energy Auction secures 10 GW for the grid at record-low costs, led by offshore wind, floating wind, solar, and onshore wind, with inflation-indexed CfDs delivering £37/MWh strike prices and enhanced energy security.

Key Points

Government CfDs add 10 GW of low-cost renewables to the UK grid via offshore wind, floating wind, and solar.

✅ 10 GW capacity: 7 GW offshore wind, 2.2 GW solar, 0.9 GW onshore wind

✅ Record-low £37/MWh offshore; floating wind at £87/MWh CfD strikes

✅ 15-year indexed contracts cut exposure to volatile gas prices

The United Kingdom will add 10 gigawatts (GW) of renewable energy capacity to its power grid at one-quarter the cost of fossil gas after concluding its biggest-ever renewable energy auction for new renewable supplies.

The “remarkable new UK renewable auction” will meet one-eighth of the country’s current electricity demand at record low prices of just £37 per megawatt-hour for offshore wind and £87 for floating offshore systems (a dynamic echoed as wind power gains in Canada across other markets), tweeted Carbon Brief Deputy Editor Simon Evans.

“The government is increasing its reliance on a local supply of renewables amid soaring UK power prices driven by a surge in the cost of natural gas following Russia’s invasion of Ukraine,” Bloomberg Green reports. Offshore wind energy “will add about seven gigawatts of clean power capacity to the nation’s fleet from 2026, bringing Britain closer to its target of installing 50 gigawatts by the end of the decade.”

The awards also include 2.2 gigawatts (that’s 2.2 billion watts) of solar and 900 megawatts of onshore wind, even as the UK faces a renewables backlog on some projects, Bloomberg says.

“Eye-watering gas prices are hitting consumers across Europe,” said UK Business and Energy Secretary Kwasi Kwarteng. “The more cheap, clean power we generate within our own borders, the better protected we will be from volatile gas prices that are pushing up bills.”

Citing government figures, Bloomberg says wind generation costs came in 5.8% lower than the previous auction in 2019, reflecting momentum in a sector set to become a trillion-dollar business this decade. Some of the winning bidders included Ørsted, Iberdrola’s Scottish Power unit, Vattenfall, and a consortium of AB Ignitis Grupe, EDP Renovaveis, and Engie.

“Offshore wind power costs have fallen dramatically in recent years as the UK supported the industry to scale up and industrialize production of larger, more efficient turbines,” the news story states. Now, “the decline in price developers are willing to accept comes even after the cost of wind turbines rose in recent months as prices increased for key metals like steel and supply chain disruptions created expensive delays.”

The 15-year, fixed-price contracts will be adjusted for inflation when the turbines are ready to start delivering electricity, offering lessons for the U.S. wind sector on contract design.

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Germany is extending its vehicle tax exemption for electric cars until 2035, a federal move aimed at boosting EV sales, supporting the auto industry, and advancing the country’s transition to cleaner, more sustainable transportation.

Why is Germany Exempting EVs from Vehicle Tax Until 2035?

Germany is exempting electric vehicles from vehicle tax until 2035 to boost EV adoption, support its auto industry, and meet national climate targets.

✅ Encourages consumers to buy zero-emission cars

✅ Protects jobs in the automotive sector

✅ Advances Germany’s clean energy transition

Germany’s federal government has confirmed plans to extend the country’s vehicle tax exemption for electric cars until 2035, as part of a renewed push to accelerate the nation’s e-mobility transition and support its struggling automotive industry. The move, announced by Finance Minister Lars Klingbeil, comes just weeks before the existing exemption was set to expire.

“In order to get many more electric cars on the road in the coming years, we need to provide the right incentives now,” Klingbeil told the German Press Agency (DPA). “That is why we will continue to exempt electric cars from vehicle tax.”

Under the proposed law, the exemption will apply to new fully electric vehicles registered until December 31, 2030, with benefits lasting until the end of 2035. According to the Finance Ministry, the measure aims to “provide an incentive for the early purchase of a purely electric vehicle.” While popular among consumers and automakers, the plan is expected to cost the federal budget several hundred million euros in lost revenue.

Without the extension, the tax relief for new battery-electric vehicles (BEVs) would have ended on January 1, 2026, creating uncertainty for automakers and potential buyers. The urgency to pass the new legislation reflects the government’s goal to maintain Germany’s momentum toward electrification, even as the age of electric cars accelerates amid economic headwinds and fierce international competition.

The exemption’s renewal was originally included in the coalition agreement between the Christian Democratic Union (CDU), the Christian Social Union (CSU), and the Social Democratic Party (SPD). It follows two other measures from the government’s “investment booster” package—raising the maximum gross price for EV tax incentives to €100,000 and allowing special depreciation for electric vehicles. However, the vehicle tax measure was previously in jeopardy due to Germany’s tight fiscal situation. The Finance Ministry had cautioned that every proposal in the coalition deal was “subject to financing,” and a plan to end EV subsidies led to speculation that the EV tax break could be dropped altogether.

Klingbeil’s announcement coincides with an upcoming “automotive dialogue” summit at the Chancellery, hosted by Chancellor Friedrich Merz. The meeting will bring together representatives from federal ministries, regional governments, automakers advancing initiatives such as Daimler’s electrification plan across their portfolios, and trade unions to address both domestic and international challenges facing Germany’s car industry. Topics will include slowing EV sales growth in China, the ongoing tariff dispute with the United States, where EPA emissions rules are expected to boost EV sales, and strategies for strengthening Germany’s global competitiveness.

“We must now put together a strong package to lead the German automotive industry into the future and secure jobs,” Klingbeil said. “We want the best cars to continue to be built in Germany. Everyone knows that the future is electric.”

The government is also expected to revisit a proposed program to help low- and middle-income households access electric cars, addressing affordability concerns that persist across markets, modelled on France’s “social leasing” initiative. Though included in the coalition agreement, progress on that program has stalled, and few details have emerged since its announcement.

Germany’s latest tax policy move signals renewed confidence in its electric vehicle transition, despite budget constraints and a turbulent global market, as the 10-year EV outlook points to most cars being electric worldwide. Extending the exemption until 2035 sends a clear message to consumers and manufacturers alike: the country remains committed to building its clean transport future—one electric car at a time.

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Building Energy Iowa Wind Farm delivers 30 MW of renewable energy near Des Moines, generating 110 GWh annually with wind turbines, a long-term PPA, CO2 reduction, and community benefits like jobs and clean power.

Key Points

Building Energy Iowa Wind Farm is a 30 MW project generating 110 GWh a year, cutting CO2 and supporting local jobs.

✅ 30 MW capacity, 10 onshore turbines (3 MW each)

✅ ~110 GWh per year; power for 11,000 households

✅ Long-term PPA; jobs and emissions reductions in Iowa

With 110 GWh generated per year, the plant will be beneficial to Iowa's environment, reflecting broader Iowa wind power investment trends, contributing to the reduction of 100,000 tons of CO2 emissions, as well as providing economic benefits to host local communities.

Building Energy SpA, multinational company operating as a global integrated IPP in the Renewable Energy Industry, amid milestones such as Enel's 450 MW U.S. wind project, through its subsidiary Building Energy Wind Iowa LLC, announces the inauguration of its first wind farm in Iowa, which adds up to 30 MW of wind distribution generation capacity. The project, located north of Des Moines, in Story, Boone, Hardin and Poweshiek counties, will generate approximately 110 GWh per year. The beginning of operations has been celebrated on the occasion of the Wind of Life event in Ames, Iowa, in the presence of Andrea Braccialarghe, MD America of Building Energy, Alessandro Bragantini, Chief Operating Officer of Building Energy and Giuseppe Finocchiaro, Italian Consul General.

The overall investment in the construction of the Iowa distribution generation wind farms amounted to $58 million and it sells its energy and related renewable credits under a bundled, long-term power purchase agreement with a local utility, reflecting broader utility investment trends such as WEC Energy's Illinois wind stake in the region.

The wind facility, developed, financed, owned and operated by Building Energy, consists of ten 3.0 MW geared onshore wind turbines, each with a rotor diameter of 125 meters mounted on an 87.5 meter steel tower. The energy generated will satisfy the energy needs of 11,000 U.S. households every year, similar in community impact to North Carolina's first wind farm, while avoiding the emission of about 70,000 tons of CO2 emissions every year, according to US Environmental Protection Agency methodology, which is equivalent to taking 15,000 cars off the road each year.

Besides the environmental benefits, the wind farm also has advantages for the local community, providing it with clean energy and creating jobs for local Iowans. The project involved more than a hundred of local skilled workers during the construction phase. Some of those jobs will be also permanent as necessary for the operation and maintenance activities as well as for additional services such as delivery, transportation, spare parts management, landscape mitigation, and further environmental monitoring studies.

The Company is present in many US states since 2013 with more than 500 MW of projects under development, spread across different renewable energy technologies, and aligning with federal initiatives like DOE wind energy awards that support innovation.

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