A new target to generate the equivalent of half of Scotland's electricity needs from renewable energy by 2015 has been set by the first minister.
Alex Salmond revealed the target at the RenewableUK conference in Glasgow.
The SNP claimed the new goal was achievable, after the government confirmed Scotland had beaten a 31% target for 2011 by about 4%.
But the Scottish Greens warned that without ending the use of fossil fuels the long-term targets would not be met.
The first minister told delegates the renewables industry presented a "massive economic opportunity".