If you are interested in joining the green movement and helping the Earth, harnessing power from the sun is the way to go. It's natural, it's clean and it's renewable, which means that you can't use it all up. Therefore, not only can solar power help you save money on your electricity bill, it is also good for the environment.
Short review of some basic cheap Chinese PWM solar charge controllers. If you want to use Li-ion batteries instead of the lead acid batteries, watch this video: …
If you are comparing prices on a solar energy unit, make sure you are comparing apples to apples. Some companies might offer bargain priced systems, but these systems might not hold up, be backed by a credible warranty or function in a way that really saves you money. Keep in mind that sometimes it is better to spend a little more now so that you save a lot more in the long run.
Don't be scared off from solar energy because you see certain companies shutting their doors. Solar energy is a big part of the country's future. It's not only great for the environment; it also saves you a lot of cash. That's a win-win across the board, and you'll be happy for looking into it now.