Lighting Retrofit ROI Calculator
Calculate energy savings, payback period, and ROI when upgrading to LED lighting from fluorescent, HID, or incandescent fixtures.
Project Settings
Fixtures
LED Savings
LED retrofits typically pay back in 1-3 years with 50-80% energy reduction. LEDs also last 25,000-50,000 hours vs 1,000-10,000 for traditional bulbs.
- • T8 Fluorescent: 32W → 15W LED
- • Incandescent: 60W → 9W LED
- • Metal Halide: 400W → 150W LED
- • Utility rebates: $2-10 per fixture
How to Use
- Enter your electricity rate from your utility bill
- Add your existing fixtures with old and new wattages
- Click Calculate to see savings and payback period
FAQ
When is LED retrofit worth it?
LED retrofit is almost always worth it if lights run more than 4 hours/day. With utility rebates, payback is often under 2 years. High-usage areas like warehouses and offices see the fastest returns.
What about maintenance savings?
LEDs last 3-5x longer than fluorescents and 25x longer than incandescents, significantly reducing replacement costs and labor. This calculator focuses on energy savings—actual ROI is often even better when maintenance is included.
How do I find utility rebates?
Check your utility company's website or dsireusa.org for commercial lighting rebates. Many utilities offer $2-10 per fixture for qualified LED upgrades. Some programs require pre-approval before starting work.