Aberdeen and Grampian Chamber of Commerce (AGCC) said 75% of contractors surveyed anticipated moving into renewables work over the next three to five years.
This is the highest level recorded since the question was first asked in 2015, the organisation said.
The findings came in the 33rd AGCC Oil and Gas Survey.
The previous survey, published in November, said the UK oil and gas sector was in "economic turmoil" amid the coronavirus pandemic with about a fifth of firms expecting more redundancies in 2021.
The latest study said almost half of the respondents expected to recruit new staff in the next 12 months.
The survey - which cover the six months to April - was carried out in partnership with the Fraser of Allander Institute and KPMG UK.
AGCC said it painted a picture of "fragile optimism".
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