By Lou Covey
Judging from the number of companies that exhibited at the Intersolar/EES joint conference in San Francisco, energy storage is the next big thing in green energy. It resolves the problem of intermittent over-and under-production that plagues sources like solar and wind. It comes, however, at a high cost to the pocketbook, the environment and personal safety. The good news is that there are alternatives to conventional storage technology. The bad news is those technologies are only now coming to market and are facing an uphill battle with the technology status quo.