LED ROI Calculator Methodology

What the Calculator Does

The ROI Calculator estimates module counts, power supply counts, and energy cost for LED sign projects. All results are planning estimates only — final layouts should be verified by a qualified sign professional.

Sizing Logic

Power supply counts use the official TMT per-model load limits first; the 80% derating rule is applied only where no official limit is published (flagged in results).

supplies_needed = ceil(module_count / official_limit_per_circuit)
annual_energy_kwh = (module_count × module_watts × hours_per_day × 365) / 1000
annual_energy_cost = annual_energy_kwh × local_rate_per_kwh

Official Load Limits Used

Electricity rates default to EIA state averages (see Analytics) and can be overridden with your local rate. Source: official TMT LEDs USA datasheets; see the Source Policy.