Best Buy: Skylights and Dimmable Fluorescent Lighting

Solutions

Best Buy installed skylights and a dimmable fluorescent lighting system to harvest daylight. Adding skylights allowed Best Buy to vary lamp output from 5% to 100%. On average the daylight harvesting system reduced lighting energy use by 45% in the store. Best Buy also installed sub-metering for lighting in the store, which allowed the creation of alarms and energy models to ensure proper lighting schedules during unoccupied hours, employee-only hours, and store hours.

The skylights installed by Best Buy were Sunoptics, Prismatic Skylights, and the size used varied based on structural design. Complementing the lighting and skylights additions, a corporate energy management system deployed at the store employs automated fault detection and diagnostics, to alert energy management staff if equipment is not running according to schedule or there are significant problems detected in critical equipment.

Best Buy: Skylights and Dimmable Fluorescent Lighting

ANNUAL ENERGY USE

ANNUAL ENERGY COST

ANNUAL WATER USE

ANNUAL WATER COST

ANNUAL PLANT ELECTRICITY USE

ANNUAL PLANT ELECTRICITY COST

IN BUILDING ENERGY USE

IN BUILDING ENERGY COST

ACROSS NETWORK USE

ACROSS NETWORK COST

ANNUAL EMISSIONS

USE

COST

Outside the Las Vegas store

Skylights with dimmable fluorescent lighting

Skylights with dimmable fluorescent lighting

Best Buy: Skylights and Dimmable Fluorescent Lighting

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Outside the Las Vegas store

Skylights with dimmable fluorescent lighting

Skylights with dimmable fluorescent lighting