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Module 6 • Agro-Solar & PM-KUSUMOctober 202615 min read

Energy Transition in Agriculture: Solar Feeders, Community Solar & Water-Energy Nexus

Target Exam: RPSC RAS / RTS Combined Competitive Examination•Official Sources: Rajasthan State Gazettes, Budget & Official ReleasesRajasthan State Gazettes, Budget & Official Releases

Energy Transition in Agriculture: Solar Feeders, Community Solar & Water-Energy Nexus

The nexus between water, energy, and agriculture is nowhere more acute than in Rajasthan. For decades, highly subsidized or unmetered agricultural power led to indiscriminate groundwater extraction. To break this unsustainable cycle without penalizing farmers, Rajasthan is deploying decentralized solar feeders, community micro-solar plants, and PM-KUSUM installations as structural economic solutions.


1. Budgetary Roadmap: Solar Push in Agriculture

As announced in the Rajasthan Budget 2025–26 and 2026–27:

•
Agricultural Power Connections: Targeted 50,000 new agricultural electricity connections powered primarily via solarized feeders.
•
Domestic Solarization: Provision of 5 lakh domestic solar rooftop/community connections and assistance linked to the PM Surya Ghar Muft Bijli Yojana.
•
Community Solar Plants: Establishment of shared community solar micro-grids dedicated to low-income and BPL rural clusters lacking individual roof capacity.
•
150 Free Units Structure: Targeted domestic electricity provisions integrated with decentralized solar credits to incentivize energy conservation.

2. PM-KUSUM Architecture in Rajasthan

Rajasthan is India's national pioneer and top performer in the implementation of the PM-KUSUM (Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan) scheme:

1.
Component A (Decentralized Solar Plants on Barren Land):
•
Farmers, cooperatives, and panchayats set up 500 kW to 2 MW grid-connected solar power plants on barren/un-cultivable agricultural land.
•
Generates predictable, drought-proof rental and power sale income for arid farming households.
2.
Component B (Standalone Solar Agriculture Pumps):
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Replacement of polluting, expensive diesel pumps with subsidized standalone solar water pumps (3 HP, 5 HP, 7.5 HP) in non-electrified off-grid zones.
3.
Component C (Solarisation of Grid-Connected Agricultural Pumps):
•
Feeder-Level Solarization: Rajasthan's flagship strategy. Instead of installing solar panels on individual pump sets across scattered farms, dedicated 11 kV agricultural feeders are solarized at 33/11 kV substations.
•
Delivers reliable daytime solar electricity to farmers, eliminating the hazard of night-time irrigation in winter and avoiding grid overload.

3. Resolving the Water-Energy-Agriculture Nexus (Core Mains Framework)

The Classic Vicious Cycle:

\text{Subsidized Power} \longrightarrow \text{Round-the-Clock Pumping} \longrightarrow \text{Aquifer Depletion} \longrightarrow \text{Deep Tubewells} \longrightarrow \text{Higher Subsidy Outlay} \longrightarrow \text{DISCOM Debt}

The Solar-Feedered Virtuous Cycle:

1.
Daytime Controlled Power: Farmers receive reliable 8 hours of daylight power, naturally preventing midnight water wastage.
2.
Surplus Power Sale: Farmers can sell unconsumed daytime solar energy back to DISCOMs, incentivizing conservation rather than excessive pumping.
3.
Micro-Irrigation Convergence: Mandatory pairing with drip and sprinkler subsidies cuts farm water demand by 40–60%.
Key Examination Takeaways:
  • Rajasthan Budget targeted 50,000 new solar-powered agricultural electricity connections and community solar plants for low-income families.
  • Under PM-KUSUM Component C, feeder-level solarization at 33/11 kV substations delivers assured daytime irrigation power to farmers.
  • PM-KUSUM Component A enables farmers to earn assured rental income by generating solar power on uncultivable barren lands.
  • Resolving the Water-Energy-Agriculture nexus hinges on replacing unmetered flat power with solar feeder separation and mandatory drip/sprinkler linkages.
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Q1

How many new agricultural electricity connections were targeted in the Rajasthan Budget through the ongoing agricultural power expansion?

Q2

Under Component C of the PM-KUSUM scheme, what is the primary operational mechanism adopted in Rajasthan to solarize agricultural pumping?

Q3

Under PM-KUSUM Component A, what capacity of solar power plants are farmers and cooperatives permitted to set up on barren/uncultivable agricultural land?

Q4

Which component of PM-KUSUM provides capital subsidies for standalone off-grid solar water pumps to replace diesel engines?

Q5

How does feeder-level solarization directly alleviate the human hardship of rural farming households during northern winters in Rajasthan?

Q6

For rural households lacking individual pucca rooftop structures, what innovative model was announced in the budget to extend solar benefits?

Q7

What is the primary economic incentive that discourages farmers from wasting water under a solarized grid-tied pump system?

Q8

What target for domestic household solar connections was articulated in state budget provisions?

Q9

In the Water-Energy-Agriculture nexus, what has historically been the consequence of flat unmetered power tariffs on DISCOM balance sheets in Rajasthan?

Q10

What is the maximum pump capacity generally supported under PM-KUSUM Component B standalone solar pump installations?

Q11

What is the typical distance threshold of barren land from a 33/11 kV substation required for setting up a PM-KUSUM Component A solar plant?

Q12

Which agency in Rajasthan functions as the state nodal agency for the implementation of PM-KUSUM Component A and solar energy policies?

Q13

What major environmental benefit accrues from replacing agricultural diesel pumps with solar pumps under PM-KUSUM Component B?

Q14

Under the centralized feeder separation scheme in Rajasthan, how are agricultural power lines separated from rural domestic supply?

Q15

Which central flagship rooftop solar scheme is being converged with Rajasthan's domestic solarization targets?