The Anonymous Widower

Malta Inc Energy Storage Explained

Malta Inc first came to my notice in 2018 and I wrote Gates Among Billionaires Backing Alphabet Energy Spinoff.

But I couldn’t find much information at the time, but they now have a web site that gives a good explanation.

This page on the web site is entitled Our Solution.

This infographic from the web page, lays out the key features.

This sentence outlines the method of operation.

The Malta energy storage system takes electricity, converts and stores that electricity as heat, and then converts it back to electricity to be redistributed on the electric grid. In charge mode, the system operates as a heat pump, storing electricity as heat in molten salt. In discharge mode, the system operates as a heat engine, using the stored heat to produce electricity.

The operation is explained in five stages.

  1. Collects – Energy is gathered from wind, solar, or fossil generators on the grid as electrical energy and sent to Malta’s energy storage system.
  2. Converts – The electricity drives a heat pump, which converts electrical energy into thermal energy by creating a temperature difference.
  3. Stores – The heat is then stored in molten salt, while the cold is stored in a chilled liquid.
  4. Reconverts – The temperature difference is converted back to electrical energy with a heat engine.
  5. Distributes – Electricity is sent back to the grid when it is needed.

Note.

  1. The operation of the system is based on well-understood thermodynamic principles.
  2. Entergy is stored as both heat and cold.
  3. It provides several hours of energy storage.
  4. Systems are built using standard components, that are readily available.

In some ways the Malta Inc PHES is based on similar principles to Highview Power’s CRYOBattery and Siemens Gamesa’s ETES.

Conclusion

This is a company to watch, as they seem to have got the technology right.

February 25, 2021 Posted by | Energy, Energy Storage | , , | 2 Comments

Malta Energy Storage System Is Looking Forward To First Pilot

The title of this post is the same as that of this article on Tech Eplore.

This is the first paragraph.

Malta has received a round of funding and is graduated from “project” to group that can sail. The Cambridge, MA-based company is focused on the storage of electro-thermal energy and the funding put the group in celebration mode this month. In return, the company is turning up the volume on its potential role in the future of energy storage—namely, working out salt-based electro-thermal energy storage.

The article goes on to describe how the system works and I suggest you read it.

This is the last paragraph.

Malta CEO Ramya Swaminathan said the challenge ahead is about design and manufacturing, in Xconomy. Swaminathan said customers were expected to come from a variety of points in the energy system. Such as? She said they expect “developers with wind or solar projects who want firm power, to grid scale applications that can be in the hundreds of megawatts range, to critical backup for data centers, to isolated grid systems like island economies.”

I believe the technology has a lot going for it.

  • It has heavyweight financial backing.
  • The technology is very conventional and well-understood, which will ease manufacture and maintenance.
  • No complex or expensive raw materials are needed.
  • I would suspect that few, if any dangerous chemicals are needed.
  • It would have developing country applications.
  • They would seem to have a large capacity.

I shall be following Malta Inc. with interest.

December 24, 2018 Posted by | Energy Storage | , | 1 Comment

Gates Among Billionaires Backing Alphabet Energy Spinoff

The title of this post is the same as that of this article on Bloomberg.

This is the first paragraph.

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

Read the article. This could be the affordable grid-scale energy storage everyone needs.

December 20, 2018 Posted by | Energy Storage, Finance | , | 1 Comment