Energy Control Products, a 3M Authorized Window Film Dealer serving Montana area since 1987. We offer a wide selection of sun control, safety, security and UV protection window film products. Energy Control is also your source for decorative and privacy films. Energy Control is your exclusive dealer for 3M Prestige Window Films. Prestige offers all of the benefits of window tinting without the tinted look! We offer free on site estimates. Statewide service.