I just had a power outage and when the power came back on there was no pressure in the system, I think the pressure tank needs to be reset?

Check the breakers in the electric panel. Turn them off, then back on to insure that they are reset.

I just had a power outage and when the power came back on there was no pressure in the system, I think the pressure tank needs to be reset?
Harold's thinking loss of power while I'm thinking loss of pressure. Who's correct? Either way the pressure tank's not involved. If you've lost pressure and prime when the power went down then you have a faulty check valve that's allowing the pump to lose prime. Solution? Replace the check/foot valve. Good luck, Tom