The projects will provide 6 gigawatts of electricity, enough to power over seven million homes.
Schemes include major offshore wind, advanced waste to gas conversion technologies, and remote island onshore wind generation in Scotland.
Three new giant wind farms to be built on the Dogger Bank will involve erection of more than 630 turbines standing 190m high, each built by Siemens in Hull.
Work is expected to start in January with the trio of schemes alone triggering £9bn of capital investment between 2020 and 2026 into low carbon infrastructure.
Developers behind the Dogger Bank project claim it would be the world’s biggest and produce enough electricity to power 4.5 million UK homes.
Grahame Barn, chief executive of the Civil Engineering Contractors Association Scotland, said: “The UK boasts the greatest potential of any European country for wind power, and we are delighted that the UK Government has recognised that investment in renewables is a vital aspect of delivering the clean energy Britain requires.
“In particular, it is gratifying to see the recognition of remote onshore wind schemes as a key resource in the UK’s future energy mix.
“These projects will not only generate a sustainable source of electricity but will deliver a substantial boost to the economy, unlocking job opportunities in remote areas of Scotland and attract investment over a substantial period of time.
“However, if the UK Government is to achieve the ambitious target of achieving net-zero emissions by the middle of the century, further investment in renewable and low carbon electricity generation will be required.”