LED savings calculator

Metal halide to LED cost reduction

Model energy, maintenance and payback for replacing metal halide floodlights with LED, then copy the business case or ask approved installers to quote.

Example: a community club 3G pitch

12 × 2 kW metal halide floodlights on existing columns, used 35 hours a week for 48 weeks, replaced with 12 × 900 W dimmable LED. Replace every figure with your own; installed cost should come from real quotes. Example figures are indicative only.

01 Existing metal halide system

Number of floodlightsInput per floodlight (W)

02 Proposed LED system

Number of LED floodlightsInput per LED floodlight (W)Average LED load (%)

03 Operation and electricity

Operating hours per weekOperating weeks per yearElectricity price (p/kWh)Annual price increase (%)Carbon factor (kgCO₂e/kWh)

04 Maintenance

MH lamp-change cost (£ per lamp)MH lamp life (hours)Other MH maintenance (£/yr)LED maintenance allowance (£/yr)

05 Investment

Installed LED project cost (£)Grant contribution (£)

Estimated first-year saving

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Energy reduction

Simple payback

10-year net saving

10-year ROI

Carbon saved / yr

Annual energy comparison

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