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

Are market constraints hampering the evolution of ‘last-mile’ grid resources?

Future grids will need assets on standby for times when there isn't enough wind and solar. But how will these assets be valued and compensated?

By Jason Deign . 27 April 2021
Energy storage

Newsletter: When promises turn into projects

Canadian startup Hydrostor is making good on its promise to build a new storage technology at massive scale.

By Julian Spector . 26 April 2021
Energy storage

Hydrostor is developing truly massive grid storage in watery caverns

Design work is beginning for a 500-megawatt project that could be online by 2025.

By Julian Spector . 23 April 2021
Batteries

The many varieties of lithium-ion batteries battling for market share

Even a small niche in a trillion-dollar market is a big prize.

By David Roberts . 21 April 2021
Batteries

Newsletter: We are living in a battery materials world

Forgive the pun.

By Julian Spector . 21 April 2021
Energy storage

Can solid-state battery company QuantumScape live up to the hype?

Being a public company means dealing with short-sellers and telling the public the actual truth.

By Eric Wesoff . 19 April 2021
Batteries

How do lithium-ion batteries actually work?

It's still battery week, and it's finally time to get anodes and cathodes straight.

By David Roberts . 16 April 2021
Batteries

Newsletter: It's battery week

David Roberts opens a new series on energy storage today with a look at the role lithium-ion batteries play in decarbonization.

By Nicholas Rinaldi . 14 April 2021
Solar

Tesla defies global price plunge, raises prices on solar roof and home batteries

Puzzling strategy from the the EV pioneer and reluctant residential solar company.

By Eric Wesoff . 14 April 2021
Batteries

Why lithium-ion batteries are so important

The kickoff to a new battery series explains how LIBs became the workhorse of the electric vehicle and energy storage fleet.

By David Roberts . 14 April 2021