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Case Study: Office Space LED Retrofit

Cut energy, Reduce Cooling Load, improve light quality and safety, and unlock rebates.

Project Overview

A professional office building upgraded its existing T8 fluorescent fixtures to high-efficiency LED troffers and panels to reduce energy costs, improve lighting quality & comfort, lower maintenance, and capture utility rebates.

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Lighting Energy

Fluorescent (4-lamp): 128 W ≈ 384 kWh/yr per fixture

LED Retrofit: 36 W ≈ 108 kWh/yr per fixture

~72% less per fixture
Saves ~276 kWh/yr per fixture

HVAC Savings

LEDs emit less heat, reducing cooling loads.

~15–20%
Typical cooling energy reduction

Fluorescent (Legacy)

  • Lamp life ~24,000 hours
  • Ballast life ~60,000 hours
  • Warranty ~2–3 years

LED Upgrade

  • Lamp/driver life ~100,000 hours
  • Warranty ~5–10 years
  • Up to ~80% lower maintenance & replacement costs
Higher light quality (CRI, uniform, no flicker)
Instant on, dimmable, controls-ready
No mercury, lower carbon footprint
Supports LEED / ENERGY STAR points

Rebates & Incentives

DTE Energy and Consumers Energy offer incentives for commercial LED upgrades.

Prescriptive examples: $10–$30 per fixture (or more), and custom incentives based on measured savings. Rebates often cover 20–50% of project cost, accelerating ROI.

Summary & Results

  • ~72% lighting energy savings per fixture
  • ~15–20% HVAC cooling energy savings
  • Longer warranties & reduced maintenance
  • Typical payback: ~1.5–2.5 years with rebates
  • Improved comfort and visual quality for occupants

We would Love to Make Your Office Space Our Next Case Study!

Ready to see if LED retrofits make sense for your facility?

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We'll Provide Energy & Cost Saving Estimates, Calculate Utility Incentive/Rebates & Assess Your Best-Fit LED Solution!