BILL ANALYSIS

S4931

BULLISH

A bill to amend the Clean Air Act to preserve consumer vehicle choice, protect the electric grid, and impose limits on regulations under that Act, and for other purposes.

S4931 (A bill to amend the Clean Air Act to preserve consumer vehicle choice, protect the electric grid, and impose limits on regulations under that Act, and for other purposes.) has been assessed with a bullish outlook for investors. The primary sectors impacted are Consumer, Utilities and Energy. View the full bill text on Congress.gov.

bullish

Market Sentiment

4/10

Impact Score

Sectors Impacted

Key Takeaways for Investors

S4931 proposes regulatory relief for ICE automakers and fossil fuel utilities by limiting EPA Clean Air Act authority.

The bill is in early stage (referred to committee) with low passage probability in a divided Congress.

Winners: $F, $GM, $DUK, $AEP, $XOM; Losers: $TSLA.

No direct funding; market impact is solely through relaxed compliance requirements.

How S4931 Affects the Market

If S4931 gains traction, traditional automakers $F and $GM could see 5-10% upside from reduced EV compliance costs, while coal-heavy utilities $DUK and $AEP benefit from extended plant life. Tesla $TSLA faces headwinds from slowing EV adoption and lost regulatory credit revenue, estimated at 5-8% of revenue. Given the early stage, these moves are unlikely until committee markup, currently not scheduled.

Bill Details

Metric	Value
Bill Number	S4931
Market Sentiment	bullish
Event Date	June 24, 2026
Affected Sectors	Consumer, Utilities, Energy
Source	View on Congress.gov →

Summary

Sen. Lee introduced S4931 to amend the Clean Air Act, limiting EPA's ability to regulate vehicle emissions and power plants. The bill is in early stage with low near-term passage probability, but signals potential regulatory relief for traditional automakers and fossil fuel utilities.

Full AI Market Analysis

On June 24, 2026, Sen. Mike Lee (R-UT) introduced S4931, a bill to amend the Clean Air Act to preserve consumer vehicle choice and protect the electric grid by imposing limits on EPA regulations. The bill was read twice and referred to the Committee on Environment and Public Works, where it awaits markup. No companion bill has been introduced in the House. The bill does not authorize or appropriate any funding; its market impact stems solely from regulatory relaxation. If enacted, the bill would restrict EPA's ability to set stringent vehicle emissions standards and power plant rules, reducing compliance costs for internal combustion engine (ICE) automakers and coal/gas utilities. Conversely, electric vehicle (EV) makers like Tesla lose regulatory tailwinds and credit revenue. Due to the early legislative stage—referred to committee, no hearings scheduled—passage is uncertain. The 119th Congress is divided, with a Republican-majority House and Democratic Senate, making significant Clean Air Act amendments unlikely. Key beneficiaries include Ford ($F) and GM ($GM), which rely on ICE vehicle sales and face heavy EV compliance costs, and utilities like Duke Energy ($DUK) and American Electric Power ($AEP) with large fossil fuel fleets. Oil major ExxonMobil also benefits from sustained fuel demand. Tesla ($TSLA) is the primary loser, facing reduced EV adoption pressure and regulatory credit sales. The timeline for S4931 is extended; committee hearings may occur in late 2026, but floor action is improbable before the 2026 midterms. Investors should view this as a speculative signal of regulatory rollback, not a near-term catalyst.