We said back in January that Swell Energy was looking for another 8,000 customers to sign up for its battery and solar service, in partnership with a leading Utility, and it turns out this is Southern California Edison, in a deal announced this week. Swell Energy has perhaps cracked the formula for tying up consumers with home batteries – having announced in January that it would offer to install its Virtual Power Plant to 6,000 Hawaiian homes, and that it would be coming back for another 8,000 somewhere in California – which we guessed might be Southern California Edison. Once all the homes have signed up, via their utility, Swell will be working on behalf of all 14,000 of those…