Clean-energy stocks jumped on the Democratic sweep. By Friday, First Solar was up 8% and Enphase down 6%

The morning after Democrats won Congress, wire headlines said renewable stocks were surging. The closing prices tell a more mixed story. From Tuesday's close through Friday's, the iShares Global Clean Energy ETF (ICLN) rose 2.1%, First Solar rose 8.2%, and Enphase fell 6.4%. Meanwhile, the tax-credit law that decides which solar and wind projects get built has not changed at all.

Democratic control of both chambers is projected but not certified, as our election-night report explains. The market moves below are measured against that backdrop.

What the closing prices show

Closes for First Solar (FSLR) and Enphase (ENPH) come from Nasdaq.com's historical price tables. ICLN and the Invesco Solar ETF (TAN) come from Yahoo Finance daily data. Percentages are our arithmetic.

The first reports were premarket numbers. Reuters, republished by Business Insurance, had First Solar up 7%, Sunrun up 6.1% and Enphase up 3.6% before the open. PV Tech reported similar moves. Heatmap put First Solar up 5% and the S&P Global Clean Energy Transition Index up more than 3% for the day. Our closing figures sit close to those, but not on top of them: First Solar finished the session up 4.6%, below its premarket jump.

Enphase gave the gains back

Enphase closed Wednesday up 3.7%, then fell 8.2% on Thursday, from $31.55 to $28.97, and slipped again Friday. Its Friday close of $28.47 is below where it traded on Election Day. The stock was already volatile: it fell 16% on Oct. 28, from $29.76 to $24.99, on volume of 26.6 million shares, according to Nasdaq.com. We did not establish a cause for either the Oct. 28 drop or Thursday's decline, and we are not guessing at one.

The point is that "solar stocks" are not one trade. A module maker such as First Solar and a home-solar inverter maker such as Enphase depend on different customers, different policies and different financing conditions. An election result moves them together for a day. After that, company news and rates take over. The same split showed up in our September look at the solar selloff, when Enphase barely moved on a day First Solar fell 10%.

The credits: what the law says today

The Democratic win does not change the rules in force. The One, Big, Beautiful Bill Act (Public Law 119-21, signed July 4, 2025) terminated the clean electricity production credit (Section 45Y) and investment credit (Section 48E) for wind and solar facilities placed in service after Dec. 31, 2027. The termination does not apply to facilities that began construction by July 4, 2026. That is according to IRS Notice 2025-42, which sets out how "beginning of construction" is determined.

That July 4, 2026 date has now passed. A project that missed it must be in service by the end of 2027 to qualify. A project that did start in time can rely on a continuity safe harbor, under which it must be placed in service within four calendar years after the year construction began. The notice also limits the Five Percent Safe Harbor to low-output solar.

Changing any of this would take legislation. We found no report of any bill restoring the credits having passed, and the sources we reviewed describe pledges, not votes. Heatmap quotes Jefferies analyst Julien Dumoulin-Smith saying Democratic leaders have pledged to restore wind and solar tax credits if they regain Congress. CNBC's Brian Sullivan wrote on Election Day that U.S. tax policy "is largely unchangeable for the next couple of years," and cited Piper Sandler's view that elections matter but "will likely not change the direction of things." Reuters said only that a Democratic sweep could bolster expected federal support and speed project approvals. We found no source reporting a scheduled vote.

The other side of the trade

Heatmap's list of Wednesday losers shows the same election repriced power-hungry AI infrastructure. It reported Vistra down almost 14%, GE Vernova down more than 9%, and CoreWeave down 10%. Reuters had data-center names lower premarket. Clean energy was one half of a rotation, not a stand-alone story.

What to watch

• Whether any bill to restore or extend wind and solar credits is formally introduced, and who sponsors it. A pledge is not a vote.
• Oversight: S&P Global, cited by CNBC, expects Democratic control to bring tougher oversight of agency decisions, which could matter for permitting and canceled grants.
• Rates: borrowing costs drive residential solar demand, and they were the larger factor in September's solar selloff.

Sources: Nasdaq.com historical quotes for FSLR and ENPH (closes Oct. 28 to Nov. 6, 2026); Yahoo Finance daily closes for ICLN and TAN; IRS Notice 2025-42; Reuters via Business Insurance, PV Tech and Heatmap (all Nov. 4, 2026); CNBC, Brian Sullivan, Nov. 3, 2026. We could not locate a CNBC article dated Nov. 7 on this topic. Percent changes are Chronicle calculations. This is market information, not investment advice.