Renewable energy is at the heart current political, economic and environmental deabate. Renewable resources such as sunlight, wind and tides do not depend on finite resources such as coal and oil. The negative environmental impact is of renewable energy is far less than that from harmful fossil fuels. Renewable energy is energy collected from renewable sources, it offers economic benefits and climate change mitigation as well as being a safer alternative to nuclear power. Iceland and Norway generate all their electricity from renewable energy.