The offer is up to $300 bill credit ($150 electricity + $150 gas).
Please check how the rates compare to your current provider but in my case they were on par with my old provider and with the added credit pushed it over the line to make it worthwhile.
The main offer is stackable with $50 referral bonus. The referral credit will be applied at the next bill.
Membership can be from having insurance, roadside or bike assist (for $10 per year from code in comments). Membership also gives you access to discount gift cards.
Mod: Removed referral solicitation
Will the credit on existing provider be transferred to the new provider?