How much will it cost to install a solar energy power to run a few appliances such as lights,tv,e-fans?

I'm not so sure about the cost, but from what I've read on it, it costs too much for it to be worth it. so unless you are out in the middle of nowhere without power, I personally wouldn't recommend it.
If you were thinking of powering small appliances, you might be better off just buying more efficient appliances especially if you already had to buy more efficient appliances in order for solar power to get enough energy to run them.

Here is an article on it

I would not bother… You will not get your money back on the savings……….