California utility augments 1,800 air conditioning units with “ice battery”
A Santa Barbara-based company called Ice Energy has partnered with NRG Energy to deliver 1,800 “ice batteries” to commercial and industrial buildings served by electric utility Southern California Edison (SCE). The units are expected to reduce air conditioning bills by up to 40 percent and eliminate 200,000 tons of CO2 over the next 20 years.
Ice Energy has been building ice-based cooling systems since the early 2000s. Much like pumped storage or compressed air “batteries,” Ice Energy essentially stores electricity by drawing power from the grid at non-peak times to freeze water in a special container. Then at peak times, when the cost of electricity is high and grid operators are struggling to keep up with demand, Ice Energy’s systems kick in and use that block of ice to cool the space that the air conditioning unit normally serves.
(Score: 2) by requerdanos on Sunday May 07 2017, @01:20PM
It's actually not. Because sometimes energy goes unused. Lets say we have a bunch of solar cells
During the summer (air conditioning season), off-peak hours [sce.com] are 11pm - 8am.
There isn't a lot of solar going unused from 11pm-8am. As a wise man once said,
if we need power at night, it can't come from solar.