September 11, 2019

California’s initiatives to overcome its challenges in the sun

California is embracing energy storage as a reliability solution for an electrical grid that’s adopting more renewable, intermittent generation. The goal is to ensure a dependable energy supply for the state as it races toward its target of 100% carbon-free energy by 2045.

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July 16, 2019

‘One Giant Leap for Mankind’: These Eight Boston Companies Are Working on Moonshots of Their Own

In Boston, innovators are working on groundbreaking technologies like hydrogen-powered flying cars, a framework for a decentralized Internet, and autonomous boats.

We’ve rounded up eight of Massachusetts’ “moonshot” companies below.


May 24, 2019

The Race is On to Build a Better Battery

Renewable energy could reshape the global economy—but only if it can be cheaply and safely stored. Meet the companies racing to crack the anode code.


May 14, 2019

A critical step to reduce climate change

Wind and solar power generation is expanding around the globe at record rates, allowing more people to get their electricity from clean, renewable sources than ever before. This is great news.

And here’s better news: We can do even more.


May 13, 2019

VC-Funded Thermal “Battery” is Based on CSP Molten Salt Energy Storage

The new Venture Capital (VC) firm Breakthrough Energy Ventures (BEV) only invests in technologies they vet as both “scientifically feasible at scale” and with the potential to reduce “at least half a gigaton of greenhouse gases every year.”


March 29, 2019

Here’s why Bill Gates, Jeff Bezos, Jack Ma and other investors are pouring billions into clean-tech investments

Investors are pouring billions into clean-tech ventures as renewable-energy technology advances.


March 18, 2019

Germany Looks to Put Thermal Storage Into Coal Plants

A new pilot will replace coal with molten salt to create giant Carnot batteries.


February 13, 2019

Alphabet’s Cleantech “Moonshots” Attract Big-Name Investors

This makes for a solid record of successes for X. All three active projects that dealt primarily with energy have graduated from the lab.


January 16, 2019

3 things to know about Malta, the Google-incubated and Bill Gates-backed startup

The first full work week of 2019 is almost over! Before the year-end holidays, the energy press sizzled with headlines trumpeting the $26 million, Series A funding round for Malta Inc., an energystorage technology that nested in Google parent Alphabet’s famous Moonshot Factory X before hatching as a standalone company in December.

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January 9, 2019

Billionaires’ fund backs Malta molten moonshot

In the storage sector, one deal that stood out to us was the $26m investment in Boston-based start-up Malta by Breakthrough Energy Ventures, which is the fund set up in 2015 to invest in groundbreaking energy technologies and is backed by well-known names such as Jeff Bezos, Michael Bloomberg, Richard Branson, Bill Gates, Jack Ma and Masayoshi Son.


January 4, 2019

7 hopeful power prognostications for 2019

In my mind, year-ahead predictions by journalists like me are somewhat akin to corporate sustainability commitments — the best are aspirational, yet grounded in some practical reality. Some are hopeful, others resigned. With that, here are some thoughts crowding my brain on the precipice of this new year.


December 27, 2018

Alphabet spin-off lands in Cambridge with plans for a salty solution for storing energy

For nearly a decade, Google’s secretive X division has been cooking up what it calls “moonshots” — projects that take on some of the most elusive problems in technology. Now, one of the effort’s big bets is touching down in Cambridge.


December 24, 2018

Alphabet Spins off moonshot project Malta with backing from Gates’s BEV fund

Malta the renewable energy storage project born in Alphabet’s moonshot factory X, is now on its own and flush with $26 million from a Series A funding round led by Breakthrough Energy Ventures. Concord New Energy Group and Alfa Laval also invested in the round.


December 24, 2018

Using molten salt to store electricity isn’t just for solar thermal plants

An energy storage startup that found its footing at Alphabet's X "moonshot" division announced last week that it will receive $26 million in funding from a group of investors led by Breakthrough Energy Ventures, a fund that counts Jeff Bezos and Michael Bloomberg as investors and whose chairman is Bill Gates. The startup, called Malta, uses separate vats of molten salt and antifreeze-like liquid to store electricity as thermal energy and dispatch it to the grid when it's needed.


December 21, 2019

Google X Spins Off Malta Molten Salt Energy Storage Business

X, the division of Google that focuses on so-called “moonshot” programs, has been working for several years on an energy storage system that uses molten salt. That initiative, called Malta, has now been spun off into a separate standalone business outside of the Google framework.


December 20, 2018

Bill Gates-led fund is investing in a startup to build a cheap battery using a “refrigerator on steroids”

In many parts of the world, it’s cheaper to build new renewable-energy projects than fossil-fuel power plants. To fully replace carbon-based fuels, however, we need solutions to store large amounts of energy for when the sun doesn’t shine and the wind doesn’t blow.


December 19, 2019

Alphabet’s X lab spin out molten-salt energy storage project Malta

A new spinoff from Google parent company Alphabet aims to revolutionize energy storage with a novel “grid-scale” architecture that relies on a mix of molten salt and antifreeze. After first emerging as Project Malta in 2017, the graduate of Alphabet’s experimental X lab is now an independent company called Malta. 


December 19, 2018

Gates, Bezos Among Billionaires Backing
Alphabet Energy Spinoff

Alphabet Inc.’s secretive X moonshot lab is spinning off an energy-storage project with backing from billionaires including Jeff Bezos and Bill Gates.

Malta Inc., the newly independent company, raised $26 million led by Breakthrough Energy Ventures LLC, a fund that counts Bezos, Masayoshi Son and Ray Dalio among its investors. Michael Bloomberg, majority owner of Bloomberg LP, the parent company of Bloomberg News, is also a Breakthrough investor and Gates is chairman.


December 19, 2018

Alphabet's hot salt energy-storage project becomes its own company

Alphabet's X division has played host to a string of experimental ideas, and another one is spinning out as an independent business. Malta uses cheap, abundant materials including salt, anti-freeze and steel to store power at grid scale.


December 19, 2018

From Google to Gates: Malta Targets Power Storage with Molten Salt

A new and unconventional power storage startup is preaching the gospel of salt and antifreeze as the long-sought answer to how to bottle up renewable electricity from intermittent solar and wind projects.

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December 19, 2018

Malta raises $26M and forms new company committed to building the future of grid-scale energy storage

Electro-thermal energy storage system incubated at X, Alphabet’s Moonshot Factory, collects and stores inexpensive and abundant energy from the grid and dispatches it as electricity on demand

Malta Inc, a pioneer in electro-thermal energy storage, today announced it has raised $26M in a Series A round of funding led by Breakthrough Energy Ventures with participation from other investors including Concord New Energy Group and Alfa Laval. Malta, which started as “Project Malta” at X, Alphabet’s Moonshot Factory, is now an independent company outside of Alphabet called “Malta Inc”.


July 31, 2017

Alphabet Wants to Fix Renewable Energy Storage Problem – With Salt

Alphabet Inc.'s secretive X skunk works has another idea that could save the world. This one, code named Malta, involves vats of salt and antifreeze. 

The research lab, which hatched Google's driverless car almost a decade ago, is developing a system for storing renewable energy that would otherwise be wasted. It can be located almost anywhere, has the potential to last longer than lithium-ion batteries and compete on price with new hydroelectric plants and other existing clean energy storage methods, according to X executives and researchers.