What does kWh stand for, and what's the difference between a kW and a kWh? Finn Peacock October 12, 2018 10:28 Updated Follow I explain that here. Related articles How do I know what size system is best for me? I use 95% of my electricity after 6pm - should I get solar? What price should I be paying for a solar system? How do I know that I'm getting the panels I paid for on the day of installation? Should I buy batteries with my solar? Comments 0 comments Please sign in to leave a comment.