A Scottish Renewables survey of more than 540 renewables firms indicates that there were 11,695 people in full-time employment last summer, an increase of 5% on the previous year.
Growth in renewables jobs outstripped the growth in employment in the Scottish economy as a whole, according to Scottish Renewables.
Most staff were employed in Glasgow, the Lothians, Highlands & Islands and the North East.
Onshore wind (39%), offshore wind (21%), marine and bioenergy (both 9%) were the biggest sources of employment.
More than half (54%) of firms said they would be looking to employ more people in the next 12 months, with 42% saying their employment would stay the same and only 1.6% expecting it to decrease.
Joss Blamire, senior policy manager for Scottish Renewables, said: “These latest figures show the renewables industry has seen steady growth in the number of people being employed despite an uncertain year.
“The breadth of job opportunities for project managers, ecologists and engineers has led to a wide range of people seeing renewable energy as a sector where they can use their skills and training. Renewables is proving it can be a significant contributor to many local economies throughout the country.