The new hotness in energy storage: gravel

Can a humble system of gravel and a heat pump provide a breakthrough for utility-scale energy storage? British startup Isentropic thinks so, and this week announced that they’ve raised $22 million in project funding and an equity investment.

The Internet of Things and energy

In the cleantech and utility worlds, it’s called “the smart grid” and “energy efficiency.” In the broader tech realm, it’s called the “Internet of Things.” Let’s bring these two ideas together, because the Internet of Things will play a crucial role in making systems more efficient.