Welcome to DU!
The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards.
Join the community:
Create a free account
Support DU (and get rid of ads!):
Become a Star Member
Latest Breaking News
Editorials & Other Articles
General Discussion
The DU Lounge
All Forums
Issue Forums
Culture Forums
Alliance Forums
Region Forums
Support Forums
Help & Search
Energy-Storing Train Gets Nevada Approval [View all]
http://fortune.com/2016/05/22/energy-storing-train-nevada/[font face=Serif][font size=5]Energy-Storing Train Gets Nevada Approval[/font]
by David Z. Morris | @davidzmorris
May 22, 2016, 12:39 PM EDT
[font size=4]Startup will build a better grid by pushing heavy railcars up a hill.[/font]
[font size=3]One of the biggest challenges of the shift to renewable energy like solar and wind is energy storage. The wind or sun don’t always generate power exactly when it’s needed, so infrastructure needs to bridge the gap. Batteries are the most frequently discussed solution, but there are other options out there, many of them surprisingly low-tech.
In April, the Nevada Bureau of Land Management granted environmental approval and a land lease to Advanced Rail Energy Storage (ARES), a startup with an energy storage solution that’s both novel and old-school. Apparently taking some inspiration from the myth of Sisyphus, ARES proposes to use excess off-peak energy to push a heavily-loaded train up a grade. Then, when the grid needs that energy back, the cars will be rolled back down the slope—but in a significant improvement on the myth, that return trip will generate energy and put it back on the grid.
ARES’ solution is related to an already common kind of energy storage known as pumped-storage hydropower, which pumps water uphill, then captures the power of its downhill flow as needed. The obvious advantage of the ARES approach is that it’s more adaptable, without the need for lots of water. ARES has also said its solution costs about half as much as other storage technologies, and claims 80% efficiency in energy reclamation, similar to or slightly above typical hydro-storage efficiency.[/font][/font]
by David Z. Morris | @davidzmorris
May 22, 2016, 12:39 PM EDT
[font size=4]Startup will build a better grid by pushing heavy railcars up a hill.[/font]
[font size=3]One of the biggest challenges of the shift to renewable energy like solar and wind is energy storage. The wind or sun don’t always generate power exactly when it’s needed, so infrastructure needs to bridge the gap. Batteries are the most frequently discussed solution, but there are other options out there, many of them surprisingly low-tech.
In April, the Nevada Bureau of Land Management granted environmental approval and a land lease to Advanced Rail Energy Storage (ARES), a startup with an energy storage solution that’s both novel and old-school. Apparently taking some inspiration from the myth of Sisyphus, ARES proposes to use excess off-peak energy to push a heavily-loaded train up a grade. Then, when the grid needs that energy back, the cars will be rolled back down the slope—but in a significant improvement on the myth, that return trip will generate energy and put it back on the grid.
ARES’ solution is related to an already common kind of energy storage known as pumped-storage hydropower, which pumps water uphill, then captures the power of its downhill flow as needed. The obvious advantage of the ARES approach is that it’s more adaptable, without the need for lots of water. ARES has also said its solution costs about half as much as other storage technologies, and claims 80% efficiency in energy reclamation, similar to or slightly above typical hydro-storage efficiency.[/font][/font]
http://vimeo.com/75895781
http://vimeo.com/48344799
http://vimeo.com/48546631
4 replies
= new reply since forum marked as read
= new reply since forum marked as read