Fuel cells transform chemical energy from a fuel into electricity. The chemical reaction that happens inside the cell takes positively-charged hydrogen ions, and becomes electricity when combined with an oxidizing element like oxygen. (i.e. hydrogen + oxygen = H2O = Steam!)
These devices will be one of many energy storage options that will provide for the seamless flow of electricity from otherwise intermittent renewable sources like wind and solar.
The video below comes courtesy of the Environmental Defense Fund. It explains what a fuel cell is, how it works, and its practical application even in supplementing the electricity already on the grid. As you will see, Bloom Energy's fuel cells are unique for their size, resource-use efficiency, and lack of toxic byproducts such as acid.
To all of my American readers: I wish you a Happy Thanksgiving. To all of my readers around the world: Thank you for stopping by and see you on December 1!
Smart Grids are reclaiming the crumbling electric grid of the United States. The current grid is still basically the one that Thomas Edison designed long before his death in 1931. His design allowed heavy, coal fire plants to provide electricity for both residential and industrial needs. Updating, rather than re-doing the grid since that time has looked more like a patch work job, than that of a technologically modernizing country.
One element of new Smart Grids popping up is the Microgrid. Just as it sounds, the Microgrid distributes electricity on a micro scale together with or separate from the larger grid around it. Critical infrastructures from one building or as much as an entire town or city neighborhood can fall under the power protection of these isolated grids. They come in handy during times of man made or natural disaster. While diesel or natural gas back-up generators were the 'go-to' back up systems of the past, renewable resources like the solar and wind with utility size battery storage increasingly attract the attention of public and private investors worldwide.
Microgrids and How the Work
(Video courtesy of CockrellSchool)
The Hoboken, New Jersey Microgrid project is a perfect example of how locally resourced backups can protect electricity access even when the surrounding grid has gone into power outage. One characteristic of all Microgrids, as you will see in the video, becomes the close collaboration between communities, local, state and federal authorities, along with civil society groups and private sector companies.
How Microgrids Improve Resiliency in Power Outages | Clean Energy Supply
