Lighting and controls are evolving near the speed of light, so even if you have already done an interior or exterior retrofit, another one is probably cost effective. If you still have original lighting, a retrofit is a no brainer. This is for small businesses to large facilities. Hawaii Energy rebates will be discussed. Hawaii Energy offers a $49 tuition sponsorship. Contact email@example.com or call 808-984-3231 to register with the tuition sponsorship. No application required.