California's battery storage fleet now rivals the output of 12 nuclear power plants

KEY DEVELOPMENTS

• California Subpoenas Wind Developers Over $120M Abandonment Deal: State officials are investigating Golden State Wind's reported agreement to scrap a 2GW offshore wind project in exchange for redirecting $120 million in lease payments toward fossil fuel investments, raising questions about how federal policy pressure is reshaping project economics. Read More: Wind Power Monthly.
• SRP and NextEra Plan 3GW Arizona Solar Buildout: Salt River Project and NextEra Energy Resources announced a partnership to develop 3,000 MW of new solar generation capacity across Arizona by 2034, one of the largest utility-scale solar commitments in the Southwest. Read More: Renewable Energy World.
• California Approves 300MW Solar-Plus-Storage in San Bernardino: The California Energy Commission greenlit the Soda Mountain project, pairing 300 MW of solar generation with 1.2 GWh of battery storage in a region increasingly central to the state's grid reliability strategy. Read More: Energy Storage News.
• Dominion's 2.6GW Offshore Wind Farm Begins Generating Power: Coastal Virginia Offshore Wind started producing electricity in March and remains on track for full operation by 2027, with Dominion projecting $5 billion in fuel savings over a decade. Read More: Utility Dive.
• Global Solar Financing Hits $11.1B in Q1 2026: Debt financing for solar projects surged to $8.9 billion in the first quarter — the highest in over a decade — while project acquisitions reached 18.4 GW worldwide, signaling strong investor confidence despite policy uncertainty. Read More: PV Magazine.

Solar & Storage

California continues to lead the nation's solar-plus-storage push with two major developments landing on the same day. The California Energy Commission's approval of the in San Bernardino County — 300 MW of solar paired with 1.2 GWh of battery storage — adds to a pipeline that has made the state's grid-scale battery fleet the envy of the nation. That fleet, as , now delivers power equivalent to 12 nuclear plants, a staggering figure that underscores how quickly storage has scaled from experimental curiosity to grid backbone. Read More: Soda Mountain project, Inside Climate News reports.

The Soda Mountain approval is notable for its sheer ratio of storage to generation — four hours of discharge at full capacity — reflecting a design philosophy increasingly favored by developers and utilities seeking to shift solar power into evening peak hours. California's grid operator, CAISO, has leaned heavily on batteries during recent heat waves and supply crunches, and the state's continued permitting of hybrid projects suggests regulators see storage not as a complement to solar but as an essential condition of it.

Beyond California, the week's biggest solar headline belongs to Arizona. Salt River Project and NextEra Energy Resources announced a across the state by 2034. The deal is significant on multiple levels: it pairs one of Arizona's largest public utilities with the nation's dominant renewables developer, and it signals that even in a state with no renewable portfolio standard, raw economics are driving massive solar procurement. SRP serves the fast-growing Phoenix metropolitan area, where data center demand and population growth are straining existing generation resources — a theme echoed in grid planning debates nationwide. Read More: partnership to develop 3,000 MW of new solar capacity.

Meanwhile, corporate procurement continues to pull utility-scale solar into new geographies. with EDP Renewables North America for the 250 MW Cypress Knee Solar project in Arkansas, extending the tech giant's renewable energy footprint deeper into the South. Arkansas has emerged as a quiet beneficiary of the data center boom, with its low land costs and improving transmission access attracting developers who might once have focused exclusively on the Sun Belt's western flank. Read More: Meta signed a power purchase agreement.

In Texas, Brazilian-founded developer Energea broke ground on its near Snyder, marking the company's first industrial-scale U.S. development. The project, expected online by early 2029, is backed by up to $5 million in secured convertible financing — a modest sum by utility-scale standards that reflects the company's strategy of scaling incrementally in the ERCOT market. And in Iowa, Polk County approved a to power its county jail, a project developed by 1 Source Solar that is expected to offset 25 percent of the facility's electricity consumption and save $3 million over its lifespan. The jail project is Phase II of the county's climate plan targeting 90 percent emissions reduction by 2040 — a reminder that local government procurement, while smaller in megawatts, often carries outsized political significance in building bipartisan support for solar. Read More: 140 MW Iron Spur Solar project, 1 MW solar installation.

On the technology side, with advanced machine learning tools aimed at utility-scale solar and storage operators. The software analyzes module-level performance data alongside weather and market pricing to improve financial forecasting — a capability increasingly in demand as merchant solar exposure grows and operators need sharper tools to manage revenue risk on deregulated grids. Read More: Tigo Energy expanded its Predict+ platform.

Wind Energy

The offshore wind sector is producing a split-screen narrative: projects that have reached advanced construction are pushing through to completion, while earlier-stage developments face existential pressure from the Trump Administration's permitting freeze and lease review. The starkest illustration arrived Tuesday with news that — a joint venture between Ocean Winds and Reventus Power — over an alleged agreement to abandon a planned 2 GW offshore wind project off the California coast. Under the reported arrangement, the developers would redirect approximately $120 million in lease payments toward fossil fuel investments, a move California regulators clearly view as meriting investigation. The probe adds a dramatic new chapter to the collision between state clean energy mandates and federal efforts to slow or unwind offshore wind. Read More: California officials have subpoenaed Golden State Wind.

This development comes as the administration's broader wind review, which stalled 165 projects last week on national security grounds, continues to cast a shadow over the sector. Yet several projects are demonstrating staying power. for two offshore wind farms, surviving the federal review process that has claimed or threatened other developments. In Massachusetts, with state officials projecting $1.4 billion in ratepayer savings — a figure that gives political cover to Northeast governors defending their offshore wind commitments. Read More: EDF Group's Atlantic Shores subsidiary retained its leases, Vineyard Wind is powering up.

The most consequential operational milestone, however, belongs to Dominion Energy. The company's 2.6 GW Coastal Virginia Offshore Wind project began producing electricity in March and is now on track for full commercial operation by 2027. Dominion reported easing cost estimates and rising electricity sales, projecting roughly $5 billion in fuel savings over a decade — the kind of bottom-line case that resonates with regulators and ratepayers in a state where the project has enjoyed bipartisan legislative support. As the largest offshore wind installation under construction in the United States, Coastal Virginia is becoming the sector's proof-of-concept at a moment when it desperately needs one.

Separately, the that spinning wind turbines interfere with radar systems — a rationale the administration has invoked to justify permitting delays. The reporting found that while turbines can create radar clutter, researchers broadly agree the impact is manageable with existing mitigation technology, raising questions about whether national security concerns are being deployed as a pretext for broader opposition to wind development. Read More: New York Times examined the Pentagon's claims.

Policy & Markets

Global capital markets are sending a clear signal: money is still flowing into solar, and fast. The sector raised , with debt financing reaching $8.9 billion — a decade high. Project acquisitions hit 18.4 GW in the quarter, suggesting that despite political uncertainty in the U.S. and trade tensions globally, institutional investors see solar as a durable asset class. For American developers, the debt markets' enthusiasm provides crucial leverage at a time when federal tax credit policy remains unsettled. Read More: $11.1 billion in Q1 2026.

Across the Atlantic, the European Commission moved to that use inverters from China, Russia, Iran, or North Korea, citing cybersecurity risks. The restriction, which now extends to battery energy storage systems, mirrors concerns that have gained traction in the U.S., where lawmakers in both parties have pushed to restrict Chinese-manufactured grid components. For American storage developers sourcing inverters globally, the EU's move may preview similar domestic restrictions and add urgency to supply chain diversification. Read More: ban EU funding for renewable energy and battery storage projects.

LOOKING AHEAD

• Golden State Wind Investigation Escalates: California's subpoena of the 2GW offshore wind project's developers could set a precedent for how states respond when federal policy pressure leads to project abandonment — watch for potential legal action or lease clawback demands in coming weeks.
• Dominion's Coastal Virginia Timeline: With the 2.6 GW offshore wind project now generating power, Dominion's next quarterly update will be closely watched for construction progress, cost trajectory, and any federal regulatory friction as it pushes toward full 2027 operation.
• IRA Tax Credit Guidance Still Pending: With Q1 solar financing surging to decade highs despite policy uncertainty, developers are watching for any Treasury Department signals on the future of clean energy tax credits — clarity in either direction would reshape project economics nationwide.

THE BOTTOM LINE: The economics of solar and storage are bulldozing through political headwinds — with record financing, a 3GW Arizona commitment driven purely by cost, and California's battery fleet now rivaling nuclear — but the Golden State Wind subpoena reveals that offshore wind developers face a new and dangerous legal frontier where walking away from projects may prove as costly as building them.