Can Solar Pumps Cut Irrigation Costs? What Should Farmers Check Before Buying One?

A solar pump can draw water for irrigation without depending on diesel or regular grid electricity. The system uses solar panels to power a pump that lifts water from a suitable source and sends it to the field.

The technology is being promoted under PM-KUSUM, which supports standalone solar agriculture pumps and the solarisation of existing grid-connected agricultural pumps. The national portal reported 839,789 standalone pumps installed under Component B as of August 31, 2026.

Solar panels convert sunlight into electricity. That electricity powers a pump, which moves water from a source such as a borewell, open well or surface-water source to the irrigation system. The system can include solar modules, a pump, controller, mounting structure and pipes. The exact setup depends on the water source, required flow, lifting height and irrigation method.

A solar pump can replace a diesel pump in suitable off-grid conditions. It removes the need to purchase diesel every time the pump operates. PM-KUSUM Component B specifically supports standalone solar agriculture pumps in off-grid areas where grid electricity is unavailable. The scheme covers individual farmers and certain farmer groups and community irrigation arrangements.

Does a solar pump work at night?

A solar pump produces electricity mainly when sunlight is available. Its output also changes with solar radiation during the day. Farmers who need water at night may need water storage or another irrigation arrangement. A storage tank can allow water pumped during the day to be used later, depending on the farm’s water requirement.

Pump capacity should match the farm’s water requirement and the conditions under which water must be lifted. A larger pump is not automatically better. Farmers should consider the required flow rate, total head, water-source depth, field size and irrigation method. A qualified installer should calculate the system rather than selecting capacity only by horsepower.

Surface pumps are designed to draw water from sources where the pump can operate above the water level. Submersible pumps operate below the water surface and are commonly used for deeper water sources. PM-KUSUM’s official FAQ lists AC and DC versions of both surface and submersible solar agricultural pumps. The correct type depends on the water source and installation conditions.

Does the water source matter?

Yes. Before installing a pump, farmers need to check whether the water source can provide enough water and whether the pump can lift it to the required height.

A powerful solar pump cannot solve a water-source problem. Farmers should assess borewell depth, seasonal water availability, pipe length, elevation and irrigation demand before purchasing the equipment.

Solar pumps can reduce recurring spending on diesel or electricity after installation because sunlight provides the energy source. The actual saving depends on how much the farmer previously spent on pumping. The farmer still has to account for the initial system cost, repairs, cleaning and possible replacement of components. The financial benefit should therefore be calculated over the expected operating life.

Under Component B, the central government provides financial assistance of 30% of the benchmark or tender cost, whichever is lower. States provide at least 30% subsidy, with the remaining share coming from the farmer, subject to scheme conditions. For Jammu and Kashmir and several other specified regions, the central assistance is 50% of the benchmark or tender cost, whichever is lower. The state contribution remains at least 30%, leaving up to 20% for the farmer.

Can farmers in Jammu and Kashmir get higher support?

Jammu and Kashmir is specifically included in the group of regions eligible for 50% central financial assistance under the PM-KUSUM provisions for standalone solar pumps. The actual farmer contribution depends on the applicable benchmark or tender cost, state subsidy and financing arrangements. Farmers should check the current allocation and application process with the designated implementing agency.

Farmers who already have grid-connected agricultural pumps can look at PM-KUSUM Component C. It supports solarisation of existing grid-connected pumps. Under the scheme, solar PV capacity of up to twice the pump capacity in kilowatts is allowed. Farmers can use the generated electricity for irrigation and may sell surplus electricity to the distribution company under applicable arrangements.

Panel capacity depends on the pump, operating conditions and required water output. The solar array must provide sufficient power for the selected pump under expected sunlight conditions. Farmers should not buy panels and pumps separately without checking compatibility. The controller, pump and solar modules should be designed as a matching system.

Yes. Solar pumps can supply water to drip irrigation systems. Combining the two can allow farmers to pump water during sunlight hours and deliver it to crops through a controlled irrigation network. The pump and drip system still need to be sized together. Excessive pump capacity or unsuitable pressure can affect the irrigation system and increase costs.

What maintenance does a solar pump need?

Solar panels should be kept reasonably clean because dust and other deposits can reduce the sunlight reaching the panels. Pipes, electrical connections, pump components and controllers also need periodic inspection.

Farmers should ask the vendor about servicing, warranty and replacement parts before installation. Local service availability matters because a system that remains unused during a breakdown cannot provide irrigation.

Cloud cover can reduce solar power generation and pump output. The extent depends on the weather, solar array and pump system. Farmers should plan irrigation around expected water demand rather than assuming that the pump will deliver the same amount of water every day. Water storage can provide greater flexibility where the farm requires it.

PM-KUSUM allows bank finance for the farmer’s contribution under the scheme. Under the standard structure, a farmer may initially contribute 10% and finance part of the remaining beneficiary share, subject to applicable conditions. The exact loan terms depend on the financing arrangement. Farmers should compare repayment costs with the expected savings from replacing diesel or paid electricity.

Farmers should check the water-source depth, required flow, pump capacity, solar-panel capacity, controller specifications and irrigation method. They should also verify the vendor, warranty, service centre, spare-parts availability and applicable subsidy. PM-KUSUM’s national portal publishes vendor and rate information for the scheme.

Should farmers buy a pump before applying for subsidy?

Farmers should first check the procedure followed by their state implementing agency. PM-KUSUM works through designated state agencies, and the process includes allocation, sanction and selection of vendors.

Buying a pump independently does not automatically mean that the farmer will receive scheme assistance. The applicable state process and approved equipment should be confirmed before making a purchase.

The national PM-KUSUM portal has warned farmers about fraudulent websites and mobile applications that ask applicants for registration fees or pump payments. Farmers should use the official PM-KUSUM portal and the designated state implementing agency for applications. They should not transfer money to an unverified website or person claiming to arrange a solar pump.

A solar pump can reduce dependence on diesel and grid electricity, but the system needs to match the farm’s water source, irrigation method and energy requirement.

For farmers considering one, the first calculation should be the water requirement and pump capacity. The next should be the total farmer contribution after applicable subsidy and financing. The purchase should follow the approved scheme and vendor process where PM-KUSUM assistance is being sought.