Just the expense of setting it up, then it is free energy. I know in some places you can even sell some of your excess power back to your local utility.
You would have to pay for the set up of it and installation, yet long term it would be more beneficial and can help reduce costs and bills as well as helping the environment!
Sunlight is free.
it will save your running fuel cost
If you live in the country in Australia and set up off grid solar power, do you still have to pay anything for it like you do in urban areas or is it just the expense of set up and then thats it?
