Capacity below the bluff, headroom on the hilltop
On a historic below-the-bluff home, a smaller original service may not carry a charger, so we run a load calculation and sometimes a service upgrade comes first. On a hilltop subdivision home there's usually room, and the circuit drops in. An Oregon City panel upgrade runs $2,500 to $7,500 where one's needed. Our Oregon City panel upgrade page covers it, and we run the math before recommending either path.