The Bord Gáis Energy Index fell 5% in February due to high wind generation and mild weather which lowered wholesale gas and electricity prices in both Ireland and the UK. Approximately 23% of Ireland's electricity was generated by wind, contributing to a 13% drop in wholesale electricity prices. Mild weather also reduced gas demand and prices fell 10% as storage levels increased. The Ukraine crisis did not initially impact prices but they spiked in early March due to concerns over European gas supplies from Russia through Ukraine.