How energy storage can make green energy economical(lightsail.com)
lightsail.com
How energy storage can make green energy economical
http://www.lightsail.com
6 comments
It seems like the source of energy is wind. But how will LightSail actually store the energy?
We've yet to unveil the details and results of our technology, but here's a preview:
We have a breakthrough energy storage technology called Regenerative Air Energy Storage.
The concept is to store energy in compressed air -- a motor/generator first drives a compressor, which stores air in a tank. To deliver stored energy, the air comes out and is expanded, driving the motor/generator as a generator and generating electricity.
Our innovation captures the heat energy of compression (the majority of the energy in compressed air is stored in the form of heat) and allows us to regenerate from it almost all of it in the form of useful energy.
We do this by spraying a fine water mist directly into the compressing and expanding air. The high surface area and heat capacity of water rapidly absorbs the heat of compression, and delivers it during expansion, to be converted back into mechanical energy.
We have a breakthrough energy storage technology called Regenerative Air Energy Storage.
The concept is to store energy in compressed air -- a motor/generator first drives a compressor, which stores air in a tank. To deliver stored energy, the air comes out and is expanded, driving the motor/generator as a generator and generating electricity.
Our innovation captures the heat energy of compression (the majority of the energy in compressed air is stored in the form of heat) and allows us to regenerate from it almost all of it in the form of useful energy.
We do this by spraying a fine water mist directly into the compressing and expanding air. The high surface area and heat capacity of water rapidly absorbs the heat of compression, and delivers it during expansion, to be converted back into mechanical energy.
Thanks for the explanation! I'm working on energy storage too, but through electrochemical means (ie. water splitting). It's always interesting to hear how other people are tackling the problem. I look forward to hearing more about LightSail in the future.
I am still surprised that more people do not take action in the T&D arena. Huge gains in efficiency with available technology 25%+.
It always made sense in my mind to decrease loss before increasing availability.
Great idea to razor focus by lightsail.
It always made sense in my mind to decrease loss before increasing availability.
Great idea to razor focus by lightsail.
Thanks! Transmission and distribution don't get the attention they deserve, it's true. I think storage can change that, though :-)
This is really, really cool. I have been hoping to see green tech startups, hopefully we will start to see a lot more.
That is some good infoporn right there to graph and prove the point: With LSE, we could solve the energy storage and distribution problems from green energy. Beautiful and reminds me of the best style of WIRED.
What kind of action can we take? Your point is powerful and your solution is revolutionary so I immediately want to be signed up for knowing more or helping somehow. If those graphs were set to music as the video for a kickstarter, I would donate.
For, now, I think, really, the main thing is to get the idea out there. And the opportunities for making a difference and making money with renewables + storage are immense. If we get the message across to governments and utilities and public utility commissions, we'll really start to see traction especially for governments of islands and rapidly emerging economies.
Offpeak Energy + Storage < Peakers + Grid Upgrades
Promote the green solution (and save green!) :)
Also, we have a pretty awesome team already, but we're always looking for exceptional people. [email protected] :)
Offpeak Energy + Storage < Peakers + Grid Upgrades
Promote the green solution (and save green!) :)
Also, we have a pretty awesome team already, but we're always looking for exceptional people. [email protected] :)
Another company addressing this problem is
http://www.aquionenergy.com/ (CMU/Pittsburgh startup)
In July they got $30M from kpcb.com
Its interesting that in Oct the price of electricity in Tx dropped to 0 (for brief time). They were basically giving it away because there isn't a way to store it. http://cleantechnica.com/2011/10/20/wholesale-price-of-elect...
Its interesting that in Oct the price of electricity in Tx dropped to 0 (for brief time). They were basically giving it away because there isn't a way to store it. http://cleantechnica.com/2011/10/20/wholesale-price-of-elect...
The price of energy sometimes goes negative, even, because wind farms want to recoup the renewable energy credit. Craziness!
Aquion is definitely an exciting competitor, and we wish them all the best. It is an honor to have such a worthy competitor. I think we'll bring out the best in each other.
They probably can reach the smallest scales better than we can, though I think we're going to give them a run for their money at mid - larger scales. It will be a challenge to come up with a system nearly so low cost and long lasting as one using compressed air. There are also some very interesting things we can do with low-grade heat, but that is another story. :-)
Aquion is definitely an exciting competitor, and we wish them all the best. It is an honor to have such a worthy competitor. I think we'll bring out the best in each other.
They probably can reach the smallest scales better than we can, though I think we're going to give them a run for their money at mid - larger scales. It will be a challenge to come up with a system nearly so low cost and long lasting as one using compressed air. There are also some very interesting things we can do with low-grade heat, but that is another story. :-)
In my area it will sometimes drop to zero or negative on early summer mornings during heat waves. The peaker plants are still spun up and they need the load to burn off the excess energy.
Granted, even a little negative doesn't mean you'll make money by turning on all the lights and cranking the A/C. Distribution charges and etc usually add a few cents per kWh.
Granted, even a little negative doesn't mean you'll make money by turning on all the lights and cranking the A/C. Distribution charges and etc usually add a few cents per kWh.