Comment by nippoo

This is a great example of economics at work. Large-scale electricity storage solutions reduce the need for generating capacity from peak load to average load - reducing the demand by the crest factor of the grid. The majority of this extra generation capacity is currently filled by gas (that is incredibly easy to spool up and down in a matter of seconds). Reducing the demand for natural gas will also increase the cost of other fossil fuels (which are mined in the same place), and it's a virtuous loop...