Solar Cold Storage Can Cut Farm Losses, How Can Small Farmers Use It?

Farmers growing tomatoes, cucumber, okra and other perishable crops can lose a large part of their produce when it cannot reach buyers quickly. A solar-powered cold storage model supported by ICAR-IARI is helping farmers store such crops for several days and reduce losses before they reach the market.

The system is being used by Adhirayansh Organics Producer Company Limited in Palwal, Haryana. The project combines solar-powered cooling with farmer aggregation and digital agriculture. It is designed for areas where electricity supply may not be reliable and where farmers need short-term storage before selling their produce.

How Does Solar Cold Storage Work?

The Pusa Farm SunFridge is a solar-powered cold storage system developed for storing perishable farm produce. According to ICAR, the system can maintain temperatures between 4°C and 15°C and preserve produce for around seven to 10 days. It uses a hybrid solar and off-grid power supply.

The short storage period can still be useful for farmers. Vegetables often arrive in markets in large quantities immediately after harvest. When supply is high, prices can fall and farmers may have little choice but to sell quickly. Short-term cold storage can give them more time to find buyers or wait for better prices.

The system is particularly useful for crops that deteriorate quickly after harvesting. Tomatoes, cucumber, okra and brinjal were among the crops assessed in the ICAR-supported model. Their post-harvest losses fell sharply after cold storage was introduced.

The technology also addresses a common problem in rural areas. A cold room that depends entirely on grid electricity may not work well where power supply is irregular. Solar generation and off-grid operation can help maintain cooling even when grid electricity is unavailable.

What Difference Can Cold Storage Make?

ICAR’s assessment of the Palwal model found that post-harvest losses fell from 70% to 10% for tomatoes. For okra, losses declined from 60% to 12%, while cucumber losses fell from 65% to 8%. Brinjal losses dropped from 68% to 11% after the intervention.

The improvement also affected farmer income. ICAR reported income gains of 30% for tomato, 25% for okra, 35% for cucumber and 25% for brinjal under the model. The reported price gains ranged from 20% to 30%, depending on the crop.

The figures come from a specific farmer organisation and should not be treated as a guaranteed return for every farm. Storage results depend on crop quality, temperature, handling, storage duration and market conditions. Farmers should calculate the likely benefit for their own crops before investing in similar infrastructure.

The model also shows why storage and marketing need to work together. Simply keeping vegetables in a cold room does not guarantee a higher price. Farmers need information about demand, buyers and market prices so they can decide when to release the produce.

Why FPOs Can Make Cold Storage Easier

A small farmer may not produce enough perishable crops to justify building a private cold room. An FPO or farmer group can bring produce from several members together and use one facility more regularly. This can spread the investment and operating costs across a larger volume of produce.

Adhirayansh Organics Producer Company Limited was registered in 2021 and operates under a project implemented jointly with ICAR-IARI and USAID, with financial facilitation from NABARD. The project focuses on affordable off-grid cooling for perishable commodities produced by small farmers.

The Palwal model has an investment of ₹6.5 lakh, according to ICAR’s economic assessment. Its annual operating cost was ₹0.7 lakh. The reported benefit-cost ratios ranged from 2.75 for okra to 3.10 for cucumber among the crops assessed.

For farmers, collective ownership can also make maintenance and operation easier. Instead of every farmer buying separate equipment, the FPO can manage the facility and charge members for storage based on the amount and duration of produce stored.

Farmers and farmer groups can access government support for post-harvest infrastructure through different schemes. Under the Mission for Integrated Development of Horticulture, financial assistance is available for construction, expansion and modernisation of cold storage facilities for horticultural produce.

The government provides assistance at 35% of the project cost in general areas and 50% in North Eastern and hilly areas and scheduled areas under the MIDH cold-storage component. Jammu and Kashmir is included among the hilly areas eligible for the higher assistance rate.

The Agriculture Infrastructure Fund also supports post-harvest infrastructure such as warehouses, cold stores and processing units. Eligible beneficiaries can access loans with interest subvention under the scheme, making it another option for groups planning larger agricultural infrastructure projects.

Farmers should check the latest state-level guidelines before applying because eligibility, project requirements and application procedures can vary. An agriculture or horticulture department, FPO or local technical agency can help identify which scheme fits the proposed facility.

What Should Farmers Check Before Using Cold Storage?

Farmers should first identify which crops they want to store and how long those crops can safely remain in storage. Different commodities need different temperature and humidity conditions. A cold room should therefore be selected according to the crop rather than simply its storage capacity.

Electricity and maintenance costs also matter. Solar power can reduce dependence on the grid, but panels, batteries, cooling equipment and other components still require maintenance. Farmers should calculate operating costs and compare them with the expected reduction in losses or improvement in selling prices.

Market access should be planned before the facility is installed. Farmers need buyers who can take the produce after storage. If there is no reliable market, cold storage may only delay the sale rather than improve the farmer’s return.

Can Solar Cold Storage Work for Small Farmers?

Solar-powered cold storage can give farmers more control over when they sell perishable produce. It can reduce losses and give farmer groups more time to find buyers instead of selling immediately after harvest.

The Palwal example shows that the technology can work when storage is combined with farmer aggregation, market access and technical support. ICAR’s assessment reported major reductions in losses and higher farmer income for several vegetables.

For small farmers, the practical option may not be individual ownership. An FPO, cooperative or group of farmers can explore a shared facility and calculate the investment based on the crops produced in the area.

The key question is not only how much produce can be stored. Farmers should ask whether storage will reduce losses, improve selling prices and lower the need for distress sales. If those three conditions are met, solar-powered cold storage can become a useful farm asset rather than simply another piece of equipment.