Replacing a gas range with an electric range. There is an electric range outlet already installed, but when we plug the range in, there is no power. We removed the outlet cover, and can see that there are wires attached. But, when looking at the circuit breaker panel, we don't see anything that would be for the stove. Any ideas? Are we missing something? Is it possible the builder (home built in 2005 in Ontario, Canada) added the outlet but then left it unconnected to power?
Anything is possible here. The likely odds are either the wires are there and a breaker to go with them is not, or there's a switched-off breaker in some sub-panel you haven't checked. I'd completely expect the electric stove outlet breaker (if present) to be switched off with a gas stove installed.
The tiny picture makes it impossible to examine the possibilities at the breaker panel very well from this side of a computer screen.
It is very possible that the wires were either run to the inside of the panel but never connected to anything, or they were connected to a breaker and a new circuit run to that breaker (EV charging, workshop equipment, secondary HVAC, etc.) and the wires abandoned.
If you feel comfortable doing so, remove the front cover of the breaker panel. Don't touch any wires. Just look for a 3-wire cable (red/black/white/bare ground) that is not connected, hopefully with wire nuts on the ends of the wires to keep things safe. You may find black and red capped off but white (neutral) and/or the ground wire still connected, depending on who did the work.
It is possible the breaker is tripped to the off/disconnected position but still looks like it is on/connected. You can flip all 13 of the double width breakers off (wait a few seconds) then back on. In doing this you can skip any breakers that are labeled for things that you know are working. Then try the oven outlet again.
If that doesn't work you'll have to open the box and LOOK around. It would be helpful if one of the wires leading in to the box is labelled something like stove/oven/range.