Energy storage

Solar

Puerto Rico closes $861M DOE loan guarantee for huge solar-battery project

The island has ambitious climate goals and a ton of rooftop solar, but has so far built few large-scale clean energy projects. Project Marahu could change that.

By Akielly Hu . 15 October 2024

Solar panels in Humacao, Puerto Rico. (Lester Jimenez/AFP via Getty Images)

Solar

Manhattan's largest rooftop solar array is about to come online

Developer Siemens overcame design obstacles to build the Javits Center rooftop solar system, which also includes a 3.5-megawatt indoor battery.

By Maria Gallucci . 28 September 2022
Energy storage

ESS inks largest-ever US flow battery purchase with Sacramento utility

The innovative deal will supply 2 gigawatt-hours of storage over multiple years and includes provisions for workforce training in and around the California capital.

By Julian Spector . 27 September 2022
Batteries

In Utah, thousands of homes feed the grid stored solar power

Utility Rocky Mountain Power teamed with sonnen to set up a virtual power plant that's thriving. Now it plans to expand the model across Utah and Idaho.

By Julian Spector . 14 September 2022
Solar

Hawaii's biggest solar+battery plant comes online — just in time

Despite supply-chain hurdles and other hiccups, developer Clearway Energy was able to get the solar-and-storage facility running before Oahu's last coal plant closes.

By Julian Spector . 15 August 2022
Energy storage

Energy storage wins a long-sought victory with Inflation Reduction Act

A dedicated grid-storage tax credit will unleash a new wave of development for technologies critical to meeting U.S. climate goals.

By Julian Spector . 12 August 2022
Energy storage

Grid energy storage is still pulling in big bucks, recession be damned

Three recent deals showcase investor confidence in the long-term growth of the battery storage market despite near-term turbulence elsewhere in the economy.

By Julian Spector . 26 July 2022
Climatetech finance

Intersect raises $750M to ditch PPAs and bet big on clean industry

The solar and storage developer plans to pivot from selling clean electrons to using them to power large-scale EV charging and clean up dirty industrial processes.

By Eric Wesoff . 12 July 2022
Podcast

How do we solve the energy storage problem?

In this crossover episode with How to Save a Planet, Shayle Kann takes a spin as a judge on a Shark Tank–style gameshow.

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By Shayle Kann . 48 min . 1 July 2022
Hydrogen

US green hydrogen hub will put long-haul energy storage to the test

The ACES Delta project in Utah is betting billions of dollars that clean hydrogen can provide months of energy storage. Will it work?

By Jeff St. John . 30 June 2022
Long-duration energy storage

Energy Dome is on the brink of a long-duration storage breakthrough

This Italian startup is speeding to market, unlike many of its competitors in the long-duration energy storage sector.

By Julian Spector . 28 June 2022