Executives from TPG, Brookfield and Cambridge Associates weighed in on audience questions in our live webcast this week, including about whether regulation was a help or a hindrance.

Energy security and cost competitiveness, rather than climate policy, are now driving growth in clean energy, write Laura Tyson of the Haas School of Business and Daniel Weiss of Angeleno Group.

This year, US Independence Day coincided with the sunsetting of renewable energy tax credits. Many in the market are happy to see them gone.

Behind this year's bigger fundraising totals lies a genuine growth story and evidence that impact investing has firmly entered the private markets mainstream.

For the moment, the lack of capital earmarked for brown-to-green real estate is benefiting early movers – that won't last forever.

The signs point to water systems as an area of increased activity. It is a welcome development.