Pattern Energy announced that CEO Mike Garland will retire on 1 January and named its current chief development officer Hunter Armistead as his replacement.

Garland presided over 13 years of growth at San Francisco-based Pattern, guiding it to become the second-largest US non-utility owner of battery storage, solar and wind capacity. At the start of 2022, the company had about 3.1GW under ownership.

Pattern also owns renewable energy assets in Canada, Japan, Mexico, and Puerto Rico, a territory of the US.

Armistead brings almost 30 years of diverse energy experience including various roles at ConocoPhillips, Edison Mission Energy, and Babcock & Brown, before Pattern which he co-founded in 2009.

“This is an extraordinary time for the renewable energy sector and the entire Pattern team is exceptionally well positioned to deliver on the opportunities ahead,” said Garland.

The landmark Inflation Reduction Act climate law signed by President Joe Biden in August is expected to turbocharge clean energy development in the second half of this decade. The law provides about $120bn in federal long-term tax credits for projects and their supply chains.

Garland praised Armistead’s “strength of commercial instincts, and his passion for Pattern’s vision”.

Armistead noted that Pattern began with a modest pipeline, a few dedicated professionals, and a vision to accelerate the world’s energy transition.

“To see Pattern and our industry evolve into what we have become has been a beautiful ride and is one that has only just begun,” he said.