Bring 5 incandescent light bulbs and exchange them for 5 new energy efficient CFL bulbs. Get new products like globe, dimmable CFLs and outdoor flood lights. Limited to five bulbs per household per year from the date last received. Bring a valid California ID and SDG&E bill. After exchanging your lights take the a guided tour of the Energy Upgrade Open House, which highlights how an existing home can be upgraded with energy efficiency and renewable energy technologies to reduce energy costs.