European Power Markets and Battery Storage Update

Key Takeaways

• Gas supply shock reprices European power markets. The Middle East conflict shut down Qatar's Ras Laffan LNG facility and constrained Strait of Hormuz transit, removing roughly 20% of global LNG supply. Front-month Title Transfer Facility (TTF) gas prices have nearly doubled to €60/MWh, with gas-reliant Italy seeing baseload power prices surge 48% to €145/MWh. European gas storage sits below 30%, its lowest seasonal level in years, and a regulatory mandate to refill to 80% by November could push forward contracts higher.
• New capacity markets could lock in high gas prices long-term. Germany's new 41 GW capacity market reserves 10 GW for gas-fired plants in its first tender, risking a lock-in of elevated fuel costs for up to 15 years. As Poland negotiates a revised capacity market framework with the EU, elevated gas costs may weaken the case for a gas-weighted auction design, potentially favoring batteries in subsequent rounds.
• Widening intraday spreads strengthen the arbitrage case for storage. Post-2022 solar additions have compressed midday prices across Europe while gas continues to set evening peaks. Spain's average daily spread widened 37% to €98/MWh in 2025, while the U.K.’s daily spreads expanded 13%. Grid connection delays are squeezing utility-scale battery pipelines in Germany, Spain, and the U.K., leaving these markets exposed to wider price swings as renewables outpace storage deployment.