Question: how much electricity does a solar panel produce in one hour?
Answer: Here's a specific example. At STC, a brand new, 320-watt solar panel should produce 320 watts. If it does that for an hour, you'll get 320 watt-hours, or enough electricity to power an efficient refrigerator (say, one that uses about 1 kilowatt-hour or kWh each day) for about 7.5 hours.