Solar Rallied 8.4% on a Bill Nobody Can Pass; Nuclear Fell 15.4% on a Credit Nobody Needs to Revive

Democrats took the House and the Senate on Nov. 3, and the first trading day in US power stocks priced the result as a clean-energy subsidy story. First Solar rose 8.4% and Enphase Energy 8.8%, while Vistra fell 15.4%, GE Vernova 11.5% and Constellation Energy 9.2% — the names with the largest contracted firm-power books in the market. The filings published that same week pointed the other way: GE Vernova revenue rose 26.8% and Quanta Services 57.4% in their latest quarters. That is a trade on the wrong side of the cash flows, and the reason is that the two credit bills on the table — a Democratic clean-electricity bill from March and the House Republican American Energy Dominance Act from April — both predate the election, and neither has become law.

The fastest thing a Democratic House does is subpoena, not subsidize. Reuters reported that the market's read on Nov. 4 was tougher scrutiny of the AI build-out, more hearings and investigations, and greater responsibility for the power and water costs of data centers. Those costs are being argued where they are actually set: state regulators writing cost-allocation rules for large loads, and FERC, whose December 2025 co-location order for PJM followed a capacity auction that cleared 6,600 MW short of reserve margin. No president who opposes clean-energy subsidies will sign a new credit in January, so the near-term Democratic action is procedural, and procedural is where the cost lands on somebody's income statement.

Section 45U is the most mispriced thing in this file, and it is mispriced in both directions. It was never repealed: the 2025 tax law kept it running through 2032 for reactors placed in service before Aug. 16, 2022, at $3 per MWh rising to $15 per MWh when prevailing wage and apprenticeship rules are met. What is switching it off is the price of power itself. The credit steps down as a plant's annual gross receipts run from $26.00 per MWh to $44.75 per MWh on the 2025 and 2026 rates, so the higher prices that make nuclear equities valuable are the same prices that erase the tax credit. The credit pays most when power is cheap, which is precisely when the nuclear equity is weakest.

Every megawatt that will serve AI load between now and 2032 has, for the most part, already been contracted, and none of those contracts depend on who controls Congress. Constellation Energy closed its $21.8 billion purchase of Calpine on Jan. 7, 2026, adding roughly 23 GW of capacity, then signed 920 MW of new long-term nuclear agreements of 15 to 20 years for delivery from 2029 through 2032 and 380 MW of data-centre agreements at Freestone with an exclusive second phase of the same size. Vistra holds a 20-year contract with Amazon for 1,200 MW from Comanche Peak beginning in the fourth quarter of 2027, and 20-year contracts with Meta covering 2,609 MW of PJM nuclear. Signed megawatts are the only AI-power asset that cannot be repriced by a hearing.

Permitting reform attacks the legal queue; it does not build a transformer. Wood Mackenzie estimates an 18% deficit in power transformers and 14% in substation transformers, more than $10 billion a year of transmission congestion, and high-voltage line completions running at less than half the pace of the previous decade. The equity read-through is already in the order books: GE Vernova ended the third quarter with $46.1 billion of Electrification backlog, growing on switchgear and transformer demand, and Quanta Services grew revenue 57.4% to $12.01 billion while carrying $63.7 billion of backlog. Hardware is the scarce input in this build-out, and it is the one input a tax bill does not produce.

The gap the market opened on Nov. 4 was not about renewables. It was about who carries the cost of serving data centres, and the direction of that trade says the hyperscalers won. Amazon rose 6.0%, Microsoft 6.0% and Alphabet 4.6%, while CoreWeave fell 9.5%, Applied Digital 8.8% and Cipher Mining 21%. Buyers that own their power were rewarded; operators that rent it at market prices were sold. Scrutiny of AI power costs is a landlord-versus-tenant problem, and the tenant side is where the equity repricing happens.

The next three months are procedural, and procedural is tradable. The Senate was expected to take a cloture vote on Nov. 9, 2026 on the permitting bill that carries the grid reform, and passage needs 60 votes, followed by House passage and a signature. The longer horizon is less about taxes than about what the 2025 law already locked in: wind and solar lose 45Y and 48E for projects placed in service after Dec. 31, 2027, while 45U runs to 2032 and steps out as power prices rise. The event calendar that matters is a permitting vote and a price band, not a tax bill.