Stay away!!! Although some of the products are valid, they are overpriced. The salesman that came to my home was smooth but after reviewing the things that were told to me they are obviously trained and have a BS degree (bullsh*t).
Don't waste your money. The things they say are not true. I did go get the aluminum shield and it works but I got it for half the price. Gary Light, the owner, after learning more about him is a man that cannot be trusted.

We bought our package from LPS a year ago---a green power box, attic insulation, and the heat shield paint. After one year here is what our experience has been...the green power box caught fire 3 months after it was installed and the whole house went dark. When we went into the garage to look at the breaker box we saw that the green box was too hot to touch and partially melted. Thank God it happened when we were home! We called the company and I have to give them kudos for their prompt response. We had a new box in no time and it was installed by a licensed electrician, who commented that whoever had installed the first one had done it completely wrong. No problems with it since then. As for saving 30-50% on utility bills--no. There is no noticeable difference between this past year with all the LPS products and the previous years, and we have not changed our habits. With that being said, if I had known we would not have seen the huge savings promised I don't think we would have spent the $4000.

A story about Light Power and the former Utility Management Association, and Gary Light's operations can be read here:

http://swflorida.blogspot.com/2012/03/free-steak-dinner-may-cost-thousands.html