The Trump administration's new tariff structure on grid equipment takes effect Sunday

KEY DEVELOPMENTS

• Trump Sets 15% Tariff on Grid Equipment: New tariff rates taking effect April 6 carve out some electrical grid components at 15% while keeping 50% duties on aluminum, steel, and copper goods, raising costs for renewable energy infrastructure nationwide. Read More: Utility Dive.
• NRC Extends Diablo Canyon License 20 Years: California's last nuclear plant secured a two-decade operating extension from the Nuclear Regulatory Commission, preserving 2.2 GW of carbon-free baseload power through the mid-2040s. Read More: Power Magazine.
• Ohio Solar Farm Powers Up With Local Panels: Geronimo Power's 117-MW Dodson Creek project in Highland County commenced operations using in-state manufactured modules, pushing the developer's Ohio portfolio to 675 MW. Read More: Solar Power World.
• Vote Solar Pushes 400 MW Storage Over Gas: Advocates filed testimony urging the North Carolina Utilities Commission to substitute distributed battery storage for new gas plants in Duke Energy's carbon plan, citing 80%-plus peak demand reductions. Read More: PV Magazine USA.
• Maine Legalizes Plug-In Solar Statewide: Maine became the third state to authorize small plug-in solar devices up to 1,200 watts, joining Utah and Virginia in a growing movement to democratize rooftop solar access. Read More: PV Magazine USA.

Solar & Storage

Ohio's growing utility-scale solar footprint got a notable addition this week when Geronimo Power flipped the switch on the 117-MW Dodson Creek Solar Project in Highland County. What makes this project stand out isn't just its scale — it's the supply chain story. The modules were manufactured in-state, a detail that underscores how domestic solar manufacturing is beginning to bear fruit in the Midwest. Geronimo now operates , making it one of the state's most prolific solar developers. The project's reliance on locally made panels echoes last week's news of US Modules opening its 400-MW-capacity factory in College Station, Texas — signals that American solar manufacturing capacity is quietly scaling even as policy headwinds persist. Read More: 675 MW across Ohio.

But the cost picture for future projects just got more complicated. The Trump administration's adjusted tariff schedule creates a two-tier system: 15% duties on certain electrical grid equipment, but a stiff 50% on goods made primarily of aluminum, steel, or copper. For solar developers, this means racking systems, mounting structures, and transformer components face elevated costs, while some balance-of-system electrical equipment gets partial relief. The net effect will be felt most acutely by utility-scale solar and battery storage projects, where steel and aluminum constitute significant portions of total installed cost. Grid modernization efforts — already strained by interconnection backlogs — face yet another cost hurdle. Read More: set to take effect Sunday.

In North Carolina, the gas-versus-storage debate is intensifying. Vote Solar and the Southern Environmental Law Center filed detailed testimony with the state's Utilities Commission arguing that Duke Energy should incorporate into its carbon plan instead of building new natural gas capacity. The filing's central claim — that solar paired with storage can shave peak demand by more than 80% — directly challenges Duke's resource planning assumptions. This comes just days after Georgia Power broke ground on its massive 260-MW/1-GWh battery system and Michigan regulators approved 1.3 GW of storage projects, suggesting a regional momentum toward grid-scale batteries across the Southeast and Midwest that utility planners can no longer dismiss. Read More: 400 MW of distributed battery storage.

That momentum is also visible in the corporate storage sector. FlexGen announced its , combining FlexGen's HybridOS software platform with CES's track record of commissioning more than 15 GWh of storage assets. The merged entity will manage over 25 GWh — a scale that positions it as one of the largest independent storage integrators in the country. Meanwhile, a new analysis from PV Magazine warns that even companies aggressively pursuing electrification through wholesale electricity pricing mechanisms, bolstering the case for pairing renewables with storage to hedge against fossil fuel market shocks. Read More: acquisition of Clean Energy Services, remain exposed to natural gas price volatility.

Minnesota's approach to that challenge, however, is drawing criticism. The state's Public Utilities Commission approved Phase 2 of Xcel Energy's Capacity*Connect virtual power plant program, which will deploy 50 to 200 MW of battery storage capacity across the grid. Yet renewable energy groups say the program in its design, suggesting that the VPP framework doesn't adequately incentivize distributed participation or maximize the value of behind-the-meter resources. The tension highlights a recurring theme: even states that embrace storage are struggling with program design that satisfies both utilities and clean energy advocates. Read More: "misses the mark".

Wind Energy

No major wind project developments surfaced today, but the tariff adjustments taking effect Sunday will have significant implications for the sector. Onshore and offshore wind installations rely heavily on steel for towers and foundations, and copper for electrical transmission — both materials subject to the 50% tariff rate. Developers with projects already under construction may be partially shielded through existing procurement contracts, but those in earlier development stages face material cost increases that could alter project economics, particularly for offshore wind proposals already grappling with supply chain challenges along the East Coast.

Policy & Markets

The most consequential policy story unfolding this weekend is the Western cap-and-trade merger. California and Washington are formally combining their carbon trading programs into a single regional market — a development first reported in yesterday's briefing that is now drawing. The combined economic output of the two states gives their unified carbon market outsized influence, but the Trump administration's systematic rollback of federal climate policy has complicated any prospect of national expansion. New York, which had been considered a natural partner for a cross-country carbon market, now faces political headwinds that make adoption increasingly uncertain. Read More: sharp contrast with New York's stalled climate ambitions.

The administration's own budget priorities came into sharper focus as the Sierra Club issued a forceful rebuke of President Trump's FY2027 budget proposal, which includes and non-defense discretionary spending. While the budget is a proposal — not yet law — it signals the administration's continued effort to defund federal climate and environmental programs, a trajectory consistent with the executive actions taken since January 2025. For clean energy developers, the practical question is whether state-level policies and private capital can compensate for shrinking federal support. Read More: deep cuts to EPA funding.

In Wisconsin, the tension between legacy fossil fuel infrastructure and the energy transition is playing out in real time. We Energies announced another delay to the closure of its Oak Creek coal plant — a facility originally slated for retirement in 2023 — while simultaneously proposing for residential and small business customers. The Sierra Club's Wisconsin chapter condemned the move, arguing ratepayers are subsidizing aging coal infrastructure at the expense of cleaner, cheaper alternatives. It's a pattern repeating across the Midwest: utilities deferring coal retirements while passing costs to consumers, even as renewables-plus-storage projects demonstrate superior economics. Read More: rate increases of 4.7% in 2027 and 4.5% in 2028.

On the nuclear front, the NRC's decision to grant removes a major uncertainty from California's clean energy calculus. The plant's 2.2 GW of carbon-free generation has been a political flashpoint for years, but its continued operation now appears settled through roughly 2045. The decision arrives against the sobering backdrop of a worker's death at the Hanford nuclear site in Washington state, which over emergency response concerns. The order has since been lifted, but the incident underscores the safety stakes at the nation's aging nuclear facilities. Read More: Diablo Canyon a 20-year license extension, triggered a stop-work order.

Globally, geopolitical instability is adding another layer of complexity. European finance ministers are calling for as Iran-related tensions drive oil and gas price surges — a dynamic that reinforces the argument for accelerated renewable deployment as a hedge against fossil fuel volatility. For U.S. clean energy executives, the message is clear: geopolitical risk premiums on fossil fuels aren't going away, and every megawatt of solar, wind, and storage deployed is a megawatt insulated from the next price shock. Read More: windfall taxes on energy companies.

Meanwhile, Maine's new plug-in solar law represents a small but symbolically important step. By becoming up to 1,200 watts — following Utah and Virginia, with Colorado's bill advancing just days ago — Maine is helping establish a national template for democratizing solar access. The law prohibits utility interconnection fees for these devices, removing a barrier that has historically deterred renters and apartment dwellers from participating in the solar economy. Read More: the third state to legalize small plug-in solar devices.

LOOKING AHEAD

• Tariff Impact Assessment: The Trump administration's adjusted metal tariffs take effect Sunday, April 6. Watch for immediate reactions from solar developers, storage integrators, and wind companies recalculating project costs and procurement timelines.
• North Carolina Carbon Plan Battle: Duke Energy's response to Vote Solar's 400-MW distributed storage testimony will be a bellwether for whether Southeast utilities can be persuaded to substitute batteries for gas plants at scale.
• Western Cap-and-Trade Merger Details: As California and Washington formalize their combined carbon market, key questions remain about price floors, allowance allocations, and whether Oregon or other states will seek entry — potentially creating the nation's most powerful sub-federal climate policy.

THE BOTTOM LINE: With new metal tariffs hitting Sunday, federal climate budgets shrinking, and states increasingly going it alone on carbon markets and storage mandates, the clean energy industry's center of gravity is shifting decisively from Washington, D.C. to state capitals and corporate boardrooms — and the developers who adapt fastest to this fragmented policy landscape will capture the advantage.