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)

Energy storage

Tesla alum aims to build the power company of the future

Equilibrium Energy is live in Texas with an offering to rent grid batteries and make money with them in the ERCOT markets. But CEO Ryan Hanley says it's just the start.

By Julian Spector . 1 August 2023
Energy storage

Industrial heat startup Rondo to open world’s largest battery factory

Rondo uses clean energy to heat a special brick made from a centuries-old recipe, then uses the stored heat to help decarbonize energy-intensive industry.

By Julian Spector . 27 June 2023
Batteries

LG kicks off colossal ramp-up of US factories for EV and grid batteries

The South Korean company will build nearly 280 gigawatt-hours' worth of factory capacity across America to meet growing demand for grid storage and EV batteries.

By Julian Spector . 26 June 2023
Energy storage

New York City is getting its biggest battery system yet

Con Edison said it's about to begin operating a 7.5 MW battery system in Staten Island as New York grapples with grid reliability concerns and rising power demand.

By Maria Gallucci . 22 June 2023
Podcast

4 ways to store sunlight

Renewables are going to need a lot of backup. Low-carbon storage technologies could be the answer.

Play

By Shayle Kann . 57 min . 25 May 2023
Batteries

Battery firms set to thrive under new California rooftop solar regime

Home battery installs could double in California this year, now that the state has ditched net metering and overhauled incentives for rooftop solar owners.

By Julian Spector . 28 April 2023
Solar

How the rooftop solar industry is adapting to California's new rulebook

The state’s once-thriving industry faces an uneasy future now that California has slashed financial incentives for people to put solar panels on their roofs.

By Julian Spector . 26 April 2023
Energy storage

Tesla's battery-storage sales are growing way faster than EV sales

Deployments of Tesla batteries surged 360% as the EV maker opened a factory for grid-scale batteries. Now it’s getting into lithium refining too.

By Eric Wesoff . 24 April 2023
Batteries

This NASA tech might just spur a major grid battery breakthrough

EnerVenue’s still got plenty to prove, but it already has a pipeline of orders and more than $100M in funding. A factory in Kentucky is on the way.

By Julian Spector . 17 April 2023
Solar

California is a rooftop solar giant. New rules could change that

Starting on April 15, new rooftop solar customers in California will earn much less for power they send to the grid, but adding batteries could improve the economics.

By Jeff St. John . 13 April 2023