Renewable sources should account for the generation of 50 per cent of Scotland's electricity by 2020, according to a new consultation document.
The Framework for the Development and Deployment of Renewables in Scotland states that the main aims are to reduce emissions by 80 per cent by 2050 as well as an interim target for renewable energy generation of 31 per cent by 2011.
E.ON is currently constructing the Robin Rigg wind farm in the Solway Firth.
The 60-turbine development is expected to generate 180 megawatts when ready, enough for 120,000 homes.
Earlier this year E.ON opened the UK's largest wood-fired biomass power station near Lockerbie.
The £90 million plant doubled Scotland's biomass electricity generating capacity from 39 to 83 megawatts, first minister Alex Salmond said at the time.
However, according to the framework, electricity is just one of the elements of renewable energy and the Scottish government has left heat aside.
The framework sets a target of 11 per cent of heat coming from renewable energy.
It also commits Scotland to getting 20 per cent of all its energy from renewables by 2020 – in line with EU targets, but ahead of the 15 per cent UK target.
