Use florescent lights in the place of incandescent lights. Most of these devices are 500% more efficient then their incandescent equivalent and last 5 to 10 times longer. They also produce much less heat within your home.
Riviera Utilities construction specifications can be found below in PDF format. In order to view these files you must have a free PDF viewer such as Adobe® Acrobat®. Once you are able to view PDFs, select the links below for specifications.