Project Case Studies
Real-world T8 & T5 LED tube retrofit projects across commercial, industrial, government, and retail sectors. Verified energy savings, ROI data, and buyer testimonials.
Showing 10 case studies
Office Tower LED Retrofit — 1,200 Fixtures
1,200 × 4ft troffer fixtures, 18 floors, 450,000 sq ft
Aging T8 fluorescent system with high maintenance costs. Ballasts failing across multiple floors. Tenant complaints about flickering and inconsistent light levels.
Full ballast-bypass retrofit using CL-T8-4F-18W-40-B (Type B). Eliminated all ballasts, reduced maintenance to near-zero. DLC listing qualified for $18,000 utility rebate from Oncor Electric.
"The retrofit was completed floor-by-floor with zero tenant disruption. Cornea Lighting delivered consistent product quality across all 2,600 tubes. The DLC documentation made the rebate process straightforward."
Automotive Parts Warehouse — 800 Fixtures
800 × 8ft fluorescent fixtures, 320,000 sq ft distribution center
High-bay 8ft fluorescent fixtures with frequent lamp failures in cold Michigan winters. Maintenance costs exceeding $35,000/year. Safety concerns from dark spots in picking aisles.
Replaced 8ft T8 fluorescent with CL-T8-8F-36W-50-B (8ft T8 LED, 5000K). Instant start at -10°C eliminated cold-start failures. 5000K daylight CCT improved picking accuracy by 12%.
"We had chronic lamp failures every winter. Since the LED retrofit, zero failures in 12 months. The 8ft tubes were a direct replacement — no fixture changes needed."
Municipal Library Network — 15 Branches
15 library branches, 3,200 × 4ft fixtures, phased 18-month rollout
City-wide energy efficiency mandate requiring 50% lighting energy reduction. Budget constraints requiring utility rebate qualification. Phased rollout across 15 branches without service disruption.
Phased retrofit using CL-T8-4F-18W-40-A (Type A, plug-and-play) for Phase 1, transitioning to CL-T8-4F-18W-40-B (Type B) for Phase 2. DLC listing qualified for $48,000 APS utility rebate.
"The phased approach allowed us to stay within annual budget while meeting the city's energy mandate. Cornea Lighting provided all DLC documentation needed for the APS rebate application."
Supermarket Chain Rollout — 45 Stores
45 stores, 180,000 × 4ft fixtures, private label packaging
Chain-wide LED upgrade with private label requirement. Consistent color temperature across all stores critical for brand standards. Supply chain reliability for multi-year rollout.
Private label T8 LED tubes with custom packaging under chain's brand. CL-T8-4F-18W-40-B-90 (CRI 90) for fresh food aisles, CL-T8-4F-18W-40-B (CRI 80) for general aisles. MacAdam Step 3 color consistency guaranteed.
"The private label service was seamless. Consistent color temperature across all 45 stores was critical for our brand standards — Cornea delivered Step 3 SDCM consistency throughout."
Regional Hospital System — 8 Facilities
8 hospital facilities, 25,000 × 4ft fixtures, 24/7 operation
Aging fluorescent system in 24/7 hospital environment. Flicker complaints from clinical staff affecting diagnostic accuracy. High maintenance costs from frequent lamp replacements.
Healthcare-grade CL-T8-4F-18W-40-B-90 (CRI 90, flicker index < 0.01) for clinical areas. Standard CL-T8-4F-18W-40-B for corridors and utility areas. Full HACCP documentation provided.
"Zero flicker complaints since the retrofit. Clinical staff report improved visual comfort during long shifts. The CRI 90 tubes in examination rooms have noticeably improved color rendering for clinical assessment."
School District LED Upgrade — 32 Schools
32 schools, 48,000 × 4ft fixtures, E-Rate funded project
District-wide LED upgrade funded through E-Rate program. DLC listing required for E-Rate qualification. Tight project timeline requiring consistent supply across 32 schools.
E-Rate qualified CL-T8-4F-18W-40-B (DLC QPL listed) for all classrooms and corridors. CL-T8-4F-22W-40-B for gymnasium high-bay applications. Full DLC documentation provided for E-Rate application.
"The E-Rate documentation from Cornea Lighting was complete and accurate, which streamlined our application. Consistent product delivery across 32 schools on a tight timeline was impressive."
Food Processing Plant — IP65 Retrofit
600 × 4ft IP65 fixtures, cold storage and processing areas, -20°C to +15°C
Fluorescent tubes failing in cold storage (-20°C). Frequent breakage creating food contamination risk. Wash-down cleaning requirements demanding IP65 protection.
IP65-rated CL-T8-4F-18W-50-B-IP65 with shatterproof polycarbonate option for cold storage and processing areas. Instant start at -20°C eliminated cold-start failures. NSF compliance documentation provided.
"The IP65 tubes eliminated our cold storage lamp failure problem completely. Instant start at -20°C was a game-changer. NSF compliance documentation was exactly what our food safety auditors required."
Hotel Chain Retrofit — Private Label
120 hotel properties, 85,000 × 4ft fixtures, private label program
Chain-wide LED upgrade with private label requirement for maintenance brand consistency. CE certification required for Southeast Asian markets. Consistent warm-white ambiance across all properties.
Private label CL-T8-4F-18W-30-B (3000K warm white) with custom hotel chain branding. CE + TUV certified for Southeast Asian markets. MacAdam Step 3 color consistency across all 120 properties.
"Consistent warm-white ambiance across 120 properties was our primary requirement. Cornea delivered Step 3 SDCM consistency and the private label program was professionally managed."
Airport Terminal Lighting — SASO Certified
2 terminal buildings, 15,000 × 4ft fixtures, SASO certification required
Airport authority requiring SASO-certified LED tubes for Saudi market compliance. 24/7 operation demanding maximum reliability. Arabic-language documentation required for procurement approval.
SASO-certified CL-T8-4F-18W-40-B with full Arabic-language technical documentation. CE + SASO dual certification for regional compliance. 5-year warranty with local service agreement.
"SASO certification and Arabic documentation were non-negotiable requirements. Cornea Lighting was one of the few manufacturers who could provide both. Zero failures in 18 months of 24/7 airport operation."
Electronics Retail Chain — OEM Program
85 stores, 42,000 × 4ft fixtures, OEM program with custom specifications
German retailer requiring OEM LED tubes with custom specifications: 5000K for electronics display, CRI 90+ for product color accuracy, CE + TUV certification for German market.
Custom ODM T8 LED tubes: 5000K, CRI 90, 18W, Type B, with TUV certification and custom retailer branding. MacAdam Step 3 color consistency for consistent product display across all stores.
"The ODM program allowed us to specify exactly what we needed: 5000K, CRI 90, TUV certified. Cornea delivered to spec across 42,000 tubes with Step 3 color consistency."