LED Conversions & Electrical

It can range, but generally you can plan for a 50% annual return. If we assume HID bulbs cost between $20 and $50 dollars and last 4 to 6 years. A ballast for a HID system lasts ten years and costs in the neighborhood of $60 dollars. With 50 lights, that can amount to $5,000 a year, or a savings of $60,000 just in maintenance expense over the lifetime of the LED fixture.