The sunshire for you is enough, let's calculate and prove it.

How much sunlight is shining down on your home?
You've got the point. It is called insolation, or, the amount of electromagnetic energy (solar radiation) incident on the surface of the earth.

Is that word "insolation" useful?
Yes, you can decide the size of your solar collector. Or, you can email me, and let our experts do it for you.

What units are used?
You can use kWh/sq.m/day. This is the average amount of solar energy that strikes a square meter of the earth's surface in a single day. Of course, there are several units that are used throughout the world.

The conversions based on surface area as follows:
1 kWh/sq.m/day = 317.1 btu/ft2/day = 3.6MJ/sq.m/day

The raw energy conversions are:
1kWh = 3412 Btu = 3.6MJ = 859.8kcal

What's the idea about my region?

It is easy, just compare your location to the following two extreme locations.
Average annual insolation levels:
Central Australia = 5.89 kWh/sq.m/day - Very High
Helsinki, Finland = 2.41 kWh/sq.m/day - Very Low

How to calculate my collector's size?
Please click here. Or just email me.

Detail information can be found in NASA website.