The document summarizes Denmark's shift towards renewable energy sources like wind power for electricity production. It shows that from 1990 to 2011, electricity production from wind turbines and hydro power has increased dramatically, now accounting for over half of Denmark's electricity production. Correspondingly, household consumption of oil and coal has declined while renewable energy sources have increased. The document also analyzes electricity consumption patterns and costs for Danish households from multi-family homes versus single-family homes.