Gas and electric? On your typical property absolutely 10000000% the tenant pays that. I would never offer to pay that as part of the rent, it's not a "fixed cost". If they run up that bill absurdly high, you as a landlord can be losing money fast if you offered to pay that. No way, I would never consider it unless circumstances were such that I absolutely had to.
Now, there are rare exceptions. One property I've seen was a duplex but not separately metered. I think it was unpermitted. Anyway, 2 units, 1 bill each month for both unit's use. So if one tenant uses a ton of power, and the other uses very little, it's not fair to have them split it 50/50 each month. The person I knew that owned that property paid the power bill and just charged higher rent, but they didn't have any other option that was fair to both tenants.
The way I look at it is if any cost is based on how much the tenant uses, they pay it. Most water bills are metered just like power, but I had a property in an area with a mutual water company that charged a fixed monthly fee for water no matter how much water you use (yeah, shocking, but its true!). I rented one place where the landlord paid for the fixed water bill, wifi, and satellite tv for me. All included in the rent. It was awesome. I still paid the PG&E though lol.