What is energy arbitrage? Buying electricity when nobody wants it
Electricity can be worth €20/MWh at noon and €150/MWh a few hours later. Energy arbitrage turns that difference into a business model: buy or store electricity when it is cheap, then sell it when it becomes valuable. The idea sounds suspiciously like “buy low, sell high.” It is. The interesting part is what batteries, efficiency losses, degradation, forecasts, negative prices, and thousands of competing batteries do to that beautifully simple plan.