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LED lamps are not the only key to lighting energy efficiency. gHID provides energy savings comparable to LED (up to 75%) at a fraction of the cost, with better light quality and dispersion. For most facilities that have HID already, gHID is superior to LED for an energy efficiency retrofit.

gHID produces lumens per watt ratings 25% – 30% higher than LED. That’s more light per dollar of energy cost. To cover the gap, a typical HID-to-LED retrofit requires the installation of extra fixtures to produce the same amount of light. This means added installation cost, and lower energy savings.

Comparison of gHID vs LED lights for HID Retrofits



Cost per 1000W fixture, including installation

$0, financed by energy savings

$1,000 – $2,500

Energy Savings

Up to 75%

Up to 75%

Common Applications

Streetlights, warehouses, high-bay, parking lots, large infrastructure

Backlighting & retail

Optimal Subject Distance

20 feet (6m) or more

0 – 25 feet (7.5m)

HID energy efficiency retrofit performance

Meets or exceeds the intended light quality of the existing HID lighting design.

Natural and expected performance in terms of lamp life, light output, light quality, and operational performance.

May need a new lighting design, may not meet existing requirements.

New light type may affect how the space functions. Light color temperature and spread may vary.

Product Life

Metal Halide HID lamps with the gHID ballast consistently measure 40,000-50,000 hours of output, 2-3 times the product life of traditional HID ballasts.

LED is unproven: ratings of 50,000-100,000 hours are largely unsubstantiated, with failures at 30,000 hours and consistent degradation of LED lamp output.

Needs Rebates to be Financially Viable



Material Waste

Install in existing HID fixture.  Only the lamp and ballast are replaced.

Yes.  LED retrofits require new LED fixtures, and creates landfill waste for existing HID fixtures.