01Location and goal
Peak sun hours are hours of full strength sunlight a panel gets per day.
02Appliances
Use electrical input watts from the label, not cooling or heating output. Day means 6am to 6pm, night means 6pm to 6am, so evening use that runs past midnight is night hours. Priority decides which scenario each item belongs to.
03Power cuts and weather
04Equipment and space
Leave roof area at 0 if you do not know it yet.
Advanced equipment settings
05Contingencies
Each margin is applied once, to the part it protects. Poor weather is set in step 03.
06Prices
Optional. Prices move fast, so use today's quotes from your supplier.
07What you pay today
Used to work out how fast the system pays for itself. Your real monthly spend beats any estimate.