Its contract with NRG Energy reconsiders the ingredients for a power purchase agreement.

A monthly wrap-up of recent research on sustainable business and clean technology reports you need to know.

Prices are falling steeply and more anecdotal evidence of commercial energy storage applications is emerging.

Competitive bidding on new power installations is increasingly common worldwide. But along come risks, including the elimination of smaller green energy producers.

It's a model that could be replicated in other countries.

Plus, perspective on why the cloud software giant doesn’t use unbundled renewable energy certificates.

The collective we should be focusing far more attention on innovation within the transmission system.

With water quickly becoming a scarce resource, market innovations are changing the way we use it.

The critical systems at its facility in Richmond, California, can operate for up to three hours when the broader grid goes down.