Ecotricity, a British energy company, offered to acquire a 75% stake in Good Energy, a UK-based energy company, for $82m. Ecotricity’s proposal represents a premium of 26.6% to the volume weighted average closing price of the target’s stock for the three months to July 9, and a premium of 4.9% over the closing price on July 21. The company said it would use existing cash resources to pay for the acquisition.