An unprecedented deluge in funding for the clean energy industry is spurring soaring demand for in-house legal talent at companies aiming to capitalize, from builders of solar farms to startups pursuing hydrogen breakthroughs.

“I have been doing this for 33 years. I have never seen so many turned-down offers as I have in the alternative-energy space right now,” said John Gilmore, co-founder and managing partner of the executive search firm BarkerGilmore in New York. “It is just a rat race. Everybody is trying to fill their team.”