SolarLogix Powers Dhupguri Cold Storage with 210kW Solar Capacity: A Milestone for North Bengal
SolarLogix, an Authorised EPC Channel Partner of TATA Power Solar, has completed a 210kW rooftop solar installation at Dhupguri Cold Storage in Jalpaiguri, West Bengal — making it the first cold storage facility in North Bengal to adopt solar power at this scale. For a region where cold storage and food processing operations run energy-intensive refrigeration loads around the clock, this project sets a concrete benchmark for what solar can deliver in the sector.
Why Cold Storage Is a High-Value Solar Case
Cold storage facilities are one of the most demanding load profiles in industrial power consumption — compressors and refrigeration units run continuously, not just during business hours, which means electricity costs stay high year-round regardless of season. That constant, predictable draw is exactly what makes cold storage such a strong fit for solar: unlike more variable industrial loads, a cold storage facility can reliably absorb daytime solar generation directly into ongoing refrigeration demand, maximizing self-consumption rather than relying heavily on grid export.
Dhupguri Cold Storage’s move to solar reflects a broader shift already visible in Bengal’s rice-milling and food-processing sectors — energy-intensive facilities recognizing that rooftop solar, sized correctly against actual load, pays for itself well within the useful life of the system.
Project Snapshot
| Detail | Figure |
|---|---|
| Location | Dhupguri, Jalpaiguri, West Bengal |
| Facility type | Cold Storage & Food Processing |
| Installed capacity | 210 kW |
| Mounting structure | RCC rooftop |
| Daily generation | 747.6 units (kWh) |
| Annual savings | Rs. 23,19,429 |
| ROI | 26.31% |
| Payback period | 3.8 years |
| EPC partner | SolarLogix, Authorized Channel Partner of TATA Power Solar |
The Installation
The 210kW system was installed on Dhupguri Cold Storage’s RCC rooftop, generating an average of 747.6 units of solar power daily. For a facility running continuous refrigeration loads, that generation profile translates into direct, high-value offset against grid consumption during daylight hours — the period when compressor loads are typically at their steadiest.
As an Authorized EPC Channel Partner of TATA Power Solar, SolarLogix managed the project end-to-end, from system design through installation, positioning Dhupguri Cold Storage as a reference point for other cold storage and food processing operators across North Bengal considering the shift to solar.
Financial Impact
The numbers make the case on their own:
- Annual savings: Rs. 23,19,429 — directly offsetting one of the facility’s largest recurring operating costs
- Payback period: 3.8 years — meaning the system pays for itself in under four years, with the remaining useful life of the installation delivering savings straight to the bottom line
- ROI: 26.31% — a return profile well above what most facilities could expect from parking the same capital elsewhere
For a continuously operating cold storage facility, where electricity is a permanent and unavoidable cost rather than a seasonal one, a sub-4-year payback represents a particularly strong case for solar adoption compared to more intermittent industrial loads.
A Good Day of Solar: What Peak Generation Looks Like
Plant-level energy logs from Dhupguri Cold Storage show what the system delivers on a strong generation day. On 29th May 2023, the plant’s best recorded day to date, the system generated 1,196.4 units (kWh) — well above its 747.6-unit daily average — with both inverters contributing an even 598.2 kWh each and a plant Capacity Utilization Factor (CUF) of 23.74%. Notably, diesel generator usage that day was effectively zero, with the facility’s cold storage and refrigeration load met almost entirely by solar and grid power.
This kind of peak-day performance illustrates the upside built into the system: on strong-irradiance days, particularly during the pre-monsoon summer months, Dhupguri Cold Storage draws even less from the grid and diesel backup than its average-day numbers suggest — reinforcing the facility’s overall savings and payback profile.
Environmental Impact
Beyond the financial case, the installation delivers a substantial sustainability footprint:
| Metric | Value |
|---|---|
| CO2 offset | 4,355.86 metric tons/year |
| Equivalent forest area | 5,113.67 acres/year |
| Coal burn avoided | 2,160.25 metric tons |
| Equivalent trees planted | 72,084.31 trees |
| Petrol consumption avoided | 18,57,844.61 liters |
| Equivalent distance driven | 1,71,27,761.76 km |
These figures place Dhupguri Cold Storage at the front of sustainability practice for North Bengal’s food processing and cold storage sector — a positioning that increasingly matters as supply chains and buyers place more weight on the environmental footprint of storage and processing partners.
What This Means for Other Cold Storage Operators in North Bengal
Dhupguri Cold Storage’s results offer a useful reference point for any cold storage or food processing facility evaluating solar:
- Continuous loads maximize solar value. Unlike loads that spike and idle, round-the-clock refrigeration means very little generated solar power goes unused — self-consumption stays high, which is central to hitting a payback period this fast.
- RCC rooftops are well suited to large-capacity systems. A 210kW installation of this scale requires a structurally sound mounting surface, and RCC rooftops — common across Bengal’s cold storage facilities — accommodate this well.
- Being “first” in a region carries real advantage. As the first cold storage in North Bengal to install solar at this scale, Dhupguri Cold Storage is positioned as a case study and reference site for the sector — an advantage worth factoring in for any facility considering an early move.
Getting Started
Every cold storage facility has a different load profile, roof structure, and grid connection — SolarLogix’s assessment process for facilities like Dhupguri Cold Storage typically includes:
- Reviewing 12 months of billing data to map continuous refrigeration load against time-of-day consumption
- Structural assessment of the rooftop (RCC or otherwise) for mounting capacity
- System sizing based on actual load, not just available rooftop area
- Financial modeling for ROI, payback period, and financing options
- End-to-end EPC delivery as an Authorized Channel Partner of TATA Power Solar
Running a cold storage or food processing facility in North Bengal? Contact SolarLogix for a free site assessment and see what a solar system sized to your actual refrigeration load could save.
Frequently Asked Questions
Why is cold storage particularly well suited to solar power? Cold storage facilities run continuous refrigeration loads around the clock, which means daytime solar generation is consistently absorbed into ongoing demand rather than going unused — driving high self-consumption and faster payback compared to more variable industrial loads.
How was the 210kW system sized for Dhupguri Cold Storage? Sizing for a cold storage facility is based on actual continuous load rather than available rooftop area alone, ensuring the system’s generation profile matches the facility’s round-the-clock refrigeration demand.
What was the payback period for this installation? The Dhupguri Cold Storage system has a payback period of 3.8 years, with an ROI of 26.31%.
Can other cold storage facilities in North Bengal expect similar savings? Savings depend on each facility’s specific load, roof structure, and grid tariff category, but Dhupguri Cold Storage demonstrates that large-scale rooftop solar can deliver strong returns for continuously operating cold storage and food processing facilities in the region.
Who executed the Dhupguri Cold Storage installation? SolarLogix, an Authorized EPC Channel Partner of TATA Power Solar, managed the project end-to-end from design through installation.
