Yes you can switch to the regular grid and yes you can sell back your power in most states ("net metering"), though that often just manifests as a credit for yo

Yes you can switch to the regular grid and yes you can sell back your power in most states ("net metering"), though that often just manifests as a credit for your night time electricity usage. 38 states, DC, and Puerto Rico allow this. https://www.seia.org/initiatives/net-metering https://www.seia.org/initiatives/net-metering