“Build more renewables”, don’t raise tax to curb UK energy costs

The article says expanding the UK windfall tax on oil and gas giants is being debated, but analysts told Montel it is unlikely to materially affect wholesale power prices. The piece argues for building more renewables rather than raising taxes to curb energy costs. Overall, the expected market impact appears limited, with the main relevance centered on UK energy policy and the tax debate.

Analysis

The market is likely over-indexing on the political symbolism of a windfall tax extension while underpricing the practical bottleneck: UK power costs are still driven far more by gas-linked marginal pricing and grid/renewables intermittency than by upstream fiscal take. That means the incremental effect on wholesale electricity is close to second-order, but the policy still matters through capex incentives and balance-sheet allocation for domestic producers and utilities.

The real transmission channel is slower and more subtle: if investors think fiscal policy will be repeatedly rewritten to capture rents, required returns on UK-exposed energy and infrastructure assets rise, delaying investment in new generation and storage. That is mildly bearish for the medium-term supply curve, because it can preserve the high-cost legacy system longer than necessary even as it claims to be pro-consumer. In other words, the policy may suppress near-term producer margins without delivering the consumer relief policymakers want.

Contrarian view: the better way to frame this is not “tax hurts prices” but “policy uncertainty is a hidden tax on capacity build-out.” If this turns into a broader anti-rent narrative, the winners are developers with diversified European exposure and contracted cash flows, while the losers are assets whose economics depend on stable post-tax uplift from mature hydrocarbon production. Tail risk is a fresh round of intervention during a winter price spike; that would hit sentiment fast, even if the actual wholesale impact remains limited.

Key Decisions for Investors

• Long diversified renewables/platforms with contracted cash flows over UK-only exposed names; prefer RWE or NEE versus smaller UK policy-sensitive developers on a 6-12 month horizon.
• Short UK domestic upstream sentiment via energy-linked equities or baskets if available; the trade is about valuation compression from policy uncertainty, not commodity beta, with a 2-4 month catalyst window around budget headlines.
• Pair trade: long grid/storage beneficiaries against short merchant power exposure in the UK; if fiscal noise delays new build, ancillary services and flexibility assets can outperform over 6-18 months.
• Buy volatility around UK energy-policy dates rather than directionally betting wholesale prices; use short-dated straddles on utilities or energy-policy proxies if implied vol remains cheap.
• Avoid chasing a consumer-price relief trade in power-linked assets; the article implies the marginal policy lever is too weak, so downside in wholesale remains limited absent a gas shock.