🏢 Commercial
Gurugram Tech Park — 200 kW Commercial Rooftop
📍 Gurugram, Haryana | Completed January 2024
📍 Gurugram, Haryana | Completed January 2024
The Gurugram Tech Park — a three-building IT and coworking campus spread across 38,000 sq ft in Sector 44 — was running monthly electricity bills averaging ₹3.5 lakh. The campus runs 24/7 for its resident companies: server room UPS systems, central air conditioning across three buildings, LED office lighting, EV charging bays, and common-area infrastructure. The Haryana commercial tariff of ₹9.35/kWh made every unit expensive.
The facilities team, led by Mr. Rahul Kapoor, had conducted a preliminary solar feasibility study in 2022 but was deterred by a structural survey finding that Building B's older concrete roof slab had limited additional load capacity. The original proposal — 200 kW all on one roof — had to be redesigned to distribute load across all three buildings without overloading any single structure.
FGPS Solar's structural team carried out detailed load calculations for all three roof slabs and specified a ballast-free clamp system for Buildings A and C (which had adequate capacity) and a lightweight aluminium elevated structure for Building B, limiting additional dead load to 8 kg/m². The 200 kW system was split: 90 kW on Building A (south-facing flat terrace), 70 kW on Building C (east and west-split design), and 40 kW on Building B with the constrained loading.
Given the multi-building layout and the need for a unified monitoring view, we deployed Huawei FusionSolar string inverters with the SUN2000 gateway aggregating production data from all three roof sections into a single real-time dashboard. The campus's energy manager can now track building-level solar production against actual consumption in 15-minute intervals and optimise AC scheduling to shift heavy loads to peak solar generation windows — effectively using forecasting to reduce grid draw further.
The system was installed during a five-week window, deliberately planned for November–December to avoid monsoon risk. Cable routing through existing conduit shafts meant no external cable trays were visible on the building facades — a key requirement from the park's property management team.
| Specification | Details |
|---|---|
| Panel Type | Longi Hi-MO 6 420 Wp Mono PERC Half-Cut |
| Panel Count | 480 panels across 3 buildings |
| Inverter | Huawei SUN2000-50KTL — 4 units (50 kW each) |
| Mounting System | Ballast-free clamps (Buildings A & C); aluminium elevated frame (Building B) |
| Orientation | Building A: South, 12°; Building B: South, 10°; Building C: East+West split |
| Roof Area Used | 1,620 m² across three rooftops |
| Annual Generation | 3,00,000 kWh (CUF ~17.1%) |
| Monitoring | Huawei FusionSolar — unified multi-site dashboard, 15-min interval data |
| DISCOM Connection | DHBVN net-metering; 200 kW HT connection with bi-directional metering |
| EV Charging Integration | Solar-priority relay for 4 EV charging bays in basement parking |
Average across all months of operation, net of DHBVN grid import charges and export credits.
The 200 kW system generates approximately 820 units on a typical Delhi-NCR summer day with 8 peak sun hours. The east-west split on Building C is particularly effective: it captures morning irradiance when server rooms are ramping up load and evening irradiance during business-hour peak demand, reducing the need for grid import during peak-tariff windows.
The ₹27 lakh annual saving represents a 64% reduction versus the pre-solar baseline. The remaining 36% of the bill covers nighttime server room load and weekend HVAC for common areas. Mr. Kapoor's team has also documented a secondary saving: by scheduling the building's battery UPS recharging cycles to coincide with solar midday peaks, they've eliminated ₹1.8 lakh per year in peak-hour demand charges — a benefit not included in the primary savings figure.
The ₹92 lakh project (post MNRE commercial subsidy of ₹4 lakh/100 kW) delivers a 3.4-year payback. The Huawei dashboard has become a key feature for prospective tenants — two large companies cited it during lease negotiations as evidence of the park's ESG credentials and energy cost stability.
FGPS Solar solved a problem no other vendor could — how to distribute 200 kW across three buildings with different roof capacities and get it all connected to a single dashboard. They did the structural calculations, handled the Haryana DISCOM approvals, and installed everything during a tight winter window without disrupting a single tenant. Our electricity bill went from ₹3.5 lakh to ₹1.25 lakh. I show the live dashboard to every prospective tenant now — it closes deals.
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