When you want to add items from a previous order to an order you are building, select Order Tracking on the left navigation bar. 1  On the Order History page, select the order number you want to view. The Order Detail page appears. 2  Select the Reorder Items button to add all products on this order to your shopping cart.
Using 4 hours of full sun, gives you this equation: 250 watts x 4 hours. Thatâs 1 kWh (1,000 watts) in a day per 250-watt panel. If you multiply 1kWh per panel by 30 days in a month, youâll find that each 250 watt rated panel will produce about 30 kWh in an average month.
Â­From our calculations and assumptions aboÂ­ve, we know that a solar panel can generate 70 milliwatts per square inch * 5 hours = 350 milliwatt hours per day. Therefore you need about 41,000 square inches of solar panel for the house. That's a solar panel that measures about 285 square feet (about 26 square meters).