Private equity is starting to see meaningful opportunity in climate finance. While some firms like KKR have been focused on ESG and impact investing for more than a decade, a once exotic idea has gone mainstream and more and more PE firms are steering limited partner capital into ESG investments, especially those with a climate focus, such as renewable energy. Private equity funds that invest solely in renewable energy assets raised about $52 billion last year, a record, according to Bloomberg. And the money for such funds so far this…