This document discusses renewable energy sources as alternatives to non-renewable fossil fuels like oil, gas and coal. It explains that renewable energy comes from natural sources that replenish themselves, unlike fossil fuels which will eventually run out. These include energy from the sun, wind, water and plant materials. The UK government has set targets to increase the country's use of renewable energy to reduce carbon emissions and improve energy security. Individuals can support renewable energy by installing small-scale technologies like solar panels at home or choosing a green energy supplier.