PM-KUSUM 2.0 Shifts Focus From Solar Pump Deployment to Rural Grid Reform

India is preparing to launch the second phase of the PM-KUSUM agricultural solar scheme with an explicit shift from pump deployment targets to addressing the rural grid infrastructure constraints that prevent effective integration of decentralised solar generation at scale. Feeder-level solarisation, which supplies power directly to agricultural feeders rather than deploying individual pumps, has emerged as the preferred model among practitioners due to lower transmission losses, better supply reliability and more predictable project economics.

Rural feeders were designed for unidirectional electricity flow, and decentralised solar generation is already causing reverse power flow in several states, triggering voltage fluctuations and transformer stress. Early PM-KUSUM deployments suffered from a fundamental credibility problem regarding distribution company payment reliability, which deterred lenders. States that implemented escrow-like payment mechanisms routing revenues directly into repayment accounts have stabilised internal rates of return at 15 to 18 per cent over 25-year lifecycles, making farm solar bankable as infrastructure. However, bankability remains contingent on state utility performance, creating an uneven investment landscape across the country.

Component C feeder-level solarisation has advantages over fragmented individual pump deployment: solar plants supply agricultural feeders directly, meeting daytime irrigation demand while exporting surplus electricity to the grid, improving supply reliability for all farmers on the feeder and generating more predictable revenue streams. Technical fixes for grid challenges, including inverter-based reactive power support, smart metering and transformer capacity upgrades, exist but must be embedded in programme design rather than delegated to financially stressed distribution companies after installation. Phase 2 must make infrastructure diagnostics a core element of the programme architecture rather than treating grid upgrades as peripheral.

Phase 1 had an equity problem it never resolved: larger landholders with land titles, banking relationships and capital to cover upfront costs captured most benefits, while small and tenant farmers who constitute the majority of India's agricultural workforce were largely excluded. Proposed Phase 2 solutions include community solar irrigation systems, irrigation-as-a-service models where farmers pay per use, cluster-based deployment for smallholders and pooled financing structures. Agro-photovoltaic models allowing cultivation beneath elevated panels and integration with rural food processing and cold storage are also under discussion, which could reframe PM-KUSUM as rural energy infrastructure rather than an agricultural subsidy.

Key figure — Internal rate of return of 15-18% over 25-year project lifecycles in states with payment escrow