I run my Gridcoin mining on energy from my solar panels, and yes I also claim and stake Solarcoins (note the ticker is SLR not SLC).
I have seen a lot of crossover in the missions of the two coins, so this is an excellent idea. The main SolarCoin community hangs out on Slack https://solarcoin-group.slack.com/
Thanks for the correction.
Thanks! I've contacted you on Gridcoin Slack for an invite link.