Project Report for Solar Cold Storage
The highest running expense in cold storage is electricity, as refrigeration runs 24 hours a day, 365 days a year. Solar power immediately tackles this issue: panels on the roof create electricity during the day, minimizing the unit’s reliance on expensive grid power. Solar cold storage integrates two well-supported infrastructure categories into a single project: cold storage (NHB subsidy) and solar energy (MNRE schemes). Sharda Associates provides CA-certified solar cold storage project reports. Starting at ₹2,999.
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What Is Solar Cold Storage and Why Does It Make Business Sense?
A solar cold storage is a conventional cold storage facility for fruits, vegetables, dairy, pharmaceutical products, or other temperature-sensitive commodities that uses an on-site solar photovoltaic (PV) system to provide electricity for refrigeration instead of (or in addition to) grid electricity.
The commercial rationale is straightforward and compelling:
Cold storage electricity expenses are considerable. A 500 MT cold storage running refrigeration 24/7 at standard industrial power pricing (₹7-10/unit in most states) consumes ₹1.50-3 lakh per month in electricity, resulting in one of the highest operational costs in the sector. Over 25 years, this amounts to ₹4.50-9 crore in electricity costs.
Solar electricity at the same place is significantly less expensive. A rooftop or ground-mount solar PV system at the cold storage location generates electricity at an effective cost of ₹2-3.50/unit over its lifespan, which is 50-60% lower than grid power.
The combination gets numerous government subsidies. NHB (35% capital subsidy) and AIF (3% interest subsidy) provide funding for cold storage development. MNRE schemes and state solar policies both provide subsidies for solar power systems.
Two Approaches to Solar Cold Storage
Approach 1 — Rooftop Solar on Existing or New Cold Storage: Solar panels are mounted on the cold storage building’s roof, producing electricity that is directly utilized by the refrigeration system. Any extra energy is either stored in batteries or exported to the grid via net metering. This is the simplest and most usual approach: the solar system is added on to the cold storage project.
Approach 2: Off-Grid Solar Cold Storage (For Remote Locations) Cold storage facilities in places with unreliable or unavailable grid power, such as distant agricultural areas, tribal territories, and flood-prone areas, are developed with totally off-grid solar cold storage and battery storage. The refrigeration system is totally powered by solar and batteries, with no connection to the grid. Higher capital cost (battery storage is expensive), but addresses the underlying grid reliability issue that limits the practicality of cold storage in remote places.
Most MSME-scale solar cold storage projects employ Approach 1: grid-connected solar PV to reduce electricity costs, with grid backup during nighttime or cloudy periods.
How Much Solar Is Needed for Cold Storage?
This is a fundamental sizing concern, and getting it right affects whether the solar investment is economically viable.
Cold storage electricity usage benchmark: A 500 MT vegetable/fruit cold storage with refrigeration running at normal operational settings uses roughly 25,000-40,000 kWh per month (25-40 MWh). This varies depending on the temperature maintained (potato storage at 2-4°C requires more energy than flower storage at 8-10°C), insulation quality, and ambient temperature.
A 50 kW rooftop solar system in central India (MP, Rajasthan, Maharashtra) with an 18-20% CUF generates roughly 78,840 kWh/year or 6,570 kWh/month.
This accounts for around 20-25% of a 500 MT cold storage’s electrical use, providing a significant but partial counterbalance.
For a 50% offset, around 100-120 kW of solar capacity is required. 200 kW or more is required for nearly full daytime coverage. The project report must accurately size the solar system in relation to the actual cold storage electricity usage.
Battery Storage Consideration: Without battery storage, solar output is only accessible during the day’s peak hours of 6-8. Cold storage refrigeration operates around the clock. This means that solar saves energy during the day but requires grid electricity at night. Adding battery storage greatly raises capital costs (battery systems are expensive), so the economic rationale for battery expansion must be carefully considered.
Government Scheme Support — Multiple Layers
The National Horticulture Board (NHB) provides a 35% backend capital subsidy on eligible cold storage project costs (55% in NE/hilly states). Banana, mango, grapes, potatoes, onions, and vegetables are all NHB-eligible. Released following construction and inspection.
AIF (Agriculture Infrastructure Fund) offers a 3% interest subsidy for loans up to ₹2 crore over 7 years. CGTMSE collateral-free coverage. Can be combined with NHB for the same project.
MNRE/State Solar Policy — The solar component includes Central Financial Assistance (CFA) for off-grid solar systems, state solar schemes, and net metering frameworks for grid-connected systems. PM-KUSUM Component C (solar pumps and agri solar) may be applicable for agricultural cold storage solar systems — state-specific; check the current scheme window.
PM-KUSUM (Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan): While largely for agricultural pumps, Component C of PM-KUSUM promotes the establishment of solar power plants on agricultural/barren land, with the electricity generated sold to DISCOMs. Some states allow agricultural cold storage operators to take part in this component.
Important note about the dual subsidy: The NHB subsidy is intended exclusively for cold storage facilities. The MNRE/state solar program provides support for solar power systems. In principle, both can be used for their respective components — but the “double benefit” criteria must be carefully checked with the scheme authorities, as some program windows prohibit mixing subsidies from multiple ministries on the same project.
Project Cost for Solar Cold Storage
Configuration | Cold Storage Cost (₹) | Solar Addition (₹) | Total (₹) |
100 MT + 30 kW solar | 35–55 lakh | 10–18 lakh | 45–73 lakh |
500 MT + 100 kW solar | 1.20–2 crore | 35–60 lakh | 1.55–2.60 crore |
1,000 MT + 200 kW solar | 2–3.50 crore | 65–1.10 crore | 2.65–4.60 crore |
Solar system cost (rooftop PV, grid-connected): approximately ₹35,000-60,000 per kW installed depending on quality and installer.
Battery storage (if off-grid): Adds ₹50,000-1,50,000 per kWh of usable storage — significantly increasing project cost for off-grid configurations.
Electricity Cost Saving — The Core Financial Case
For a 500 MT cold storage using 35,000 kWh/month at ₹8 per unit: Monthly grid electricity costs ₹2.80 lakh/month.
With 100 kW solar, generating 6,570 kWh each month: Monthly solar savings: 6,570 x ₹8 = ₹52,560 per month in electricity savings. Annual savings: ₹6.31 lakh per year
Solar systems (100 kW) cost between ₹40-60 lakh. Payback from electricity savings alone: 6-10 years, based on a system with a 25-year useful life.
After repayment, the solar system continues to generate nearly free electricity for 15 years or more, significantly increasing the cold storage operation’s long-term profitability.
This payback study, apart from the cold storage DSCR, is an important component of the solar cold storage project report that distinguishes it from a normal cold storage DPR.
Why Choose Sharda Associates
- 45,500+ Project Reports Experience – Proven expertise in cold storage, agricultural infrastructure, and solar energy projects throughout India.
- Multi-Scheme Documentation Support – Prepared project reports for NHB, AIF, and solar subsidy schemes using consistent financial and technical data.
- Accurate Solar System Sizing – Solar capacity is computed using cold storage load, commodity type, and operational conditions.
- Electricity Cost Savings Analysis – A detailed payback and ROI analysis demonstrating possible energy savings from solar integration.
- Grid-Connected or Off-Grid Planning – A suitable solar setup is recommended based on location, electricity availability, and business requirements.
- Subsidy Eligibility Assessment – How to maximize eligible incentives while remaining compliant with NHB, AIF, MNRE, and state solar schemes.
- Starting at ₹2,999 · 24–48 working hours ·
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Frequently Asked Questions
A cold storage facility in which on-site solar PV panels provide some or all of the refrigeration electricity. The highest operational cost for cold storage is energy (₹1.50-3 lakh per month for 500 MT). Solar-generated electricity has an effective cost of ₹2-3.50/unit, compared to ₹7-10/unit grid pricing. This reduces operational costs by 50-60%. This amounts to crores of rupees in electricity savings over the course of 25 years.
Cold storage component: NHB 35% backend capital subsidy (55% NE/hilly) plus AIF 3% interest subsidy over 7 years. Solar components include MNRE CFAs for off-grid systems, state solar laws, and net metering for grid-connected systems. PM-KUSUM Component C may be used for agricultural cold storage solar in several areas. Dual subsidy eligibility must be checked with program administrators.
A 500 MT cold storage system that consumes 35,000 kWh per month requires around 100-120 kW of rooftop solar to offset 20-25% of electricity consumption. For 50% offset, 200 kW or more is required. Correct size necessitates knowledge of actual electricity use (which changes depending on commodity stored, temperature, and insulation quality) rather than a general kW/MT formula.
A 100 kW rooftop solar system (₹40-60 lakh) atop a 500 MT cold storage saves ₹52,560 per month in electricity expenditures, with a payback period of 6-10 years. After payback, the solar system continues to generate nearly free electricity for 15 years or more, significantly enhancing long-term profitability over traditional grid-powered cold storage.
Grid-connected (with net metering): reduced capital costs, grid backup at night and on cloudy days, simpler system. Suitable for most sites with a grid connection. Off-grid (with battery storage): higher initial cost (battery is pricey), but suitable for distant agricultural areas with unreliable or unavailable grid power. The majority of small and medium-sized solar cold storage facilities are connected to the grid.
In essence, the NHB subsidy covers the cold storage infrastructure, while the MNRE/state solar subsidies cover the solar power system; these are distinct components. However, scheme conditions differ, and "double benefit" limits may apply in specific windows. Verification with both the NHB regional office and the state nodal agency for solar schemes is required before filing applications. Sharda Associates can offer advice depending on existing scheme conditions.
A complete project report assists banks and subsidy authorities in determining technical feasibility, financial viability, energy savings, and payback capacity.
Yes, with rising need for cold chain infrastructure and rising electricity costs, solar-powered cold storage is an attractive investment for farmers, FPOs, and agribusinesses.