The UK's green energy sector directly employs more than 18,000 full time staff, a new industry report has found.
The review published by trade body RenewableUK also found that nearly 16,000 people are indirectly employed as a result of the wind, wave and tidal energy industries, in businesses which supply products and services to the sector.
The number of people working in the sector has increased by 74 per cent since 2010 when RenewableUK conducted its original "working for a green Britain and Northern Ireland" study into employment in the wind, wave and tidal power industries.
The number of employees working in the offshore wind industry alone has more than doubled from 3,151 in 2010 to 6,830 in 2013, the updated report shows. With 18,465 full time people directly employed in wind, wave and tidal power and 15,908 indirect jobs, the sector supports more than 34,300 jobs across the UK.
RenewableUK's chief executive Maria McCaffery said: "Today's report clearly demonstrates how the wind, wave and tidal industries are creating jobs and growth for the economy.
"There are tens of thousands of people employed in skilled jobs the length and breadth of the country building a world-leading industry in the UK and providing clean, reliable energy."
People are employed in construction and installation, planning and development, support services, operations and maintenance and manufacturing and RenewableUK claimed more than 70,000 new jobs could be created in the next decade with the right support, almost half of which would be in offshore wind.
The study showed that 91 per cent of people employed in the sector were UK citizens, and a fifth were women, a lower proportion than in technical and professional occupations but higher than the power sector overall.
It also shows that small and medium sized businesses are key to the renewable power sectors, with 80 per cent of all employers in wind, wave and tidal industries employing fewer than 250 people and more than half (56 per cent) employing fewer than 25.
McCaffery added: "If the UK gets this right, our wind, wave and tidal industries could employ more than 70,000 people over the next decade. The offshore wind sector alone could be employing nearly 45,000 workers in the 2020s. As an industry we are truly creating jobs out of fresh air."
But she warned that further growth should not be taken for granted. The report assesses growth prospects in different scenarios and if there were low deployment of new renewables, offshore wind could actually see a reduction in jobs.
"To really harness the economic benefits of our technologies we must ensure that there is certainty for industry,” she said. "Certainty on future levels of deployment of wind, wave and tidal energy over the next decade will enable firms to invest in the right people and the right skills, and ensure we maximise the number of green collar jobs we create as we transform our electricity system."