Buy Solar Power via Open Access in Maharashtra

Maharashtra's high MSEDCL industrial tariffs — ₹8.50–₹10.00/unit for HT consumers — create one of India's strongest commercial cases for open access solar. Wattency features Group Captive and ISTS projects specifically structured for Maharashtra's industrial clusters.

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Maharashtra solar policy at a glance (2026)

Maharashtra is India's largest industrial state by GDP, and its power market reflects that scale — both in the size of the potential savings and in the complexity of doing open access correctly. Key framework points:

  • Open access threshold: 1 MW for standard OA; 100 kW for Green Energy Open Access under MERC's Green OA regulations (2023)
  • Cross-Subsidy Surcharge: ₹2.00–₹2.80/unit for HT industrial — the single biggest cost factor in Maharashtra OA economics. This makes the CSS-exempt Group Captive structure particularly valuable
  • MSEDCL HT tariff: ₹8.50–₹10.00/unit in FY2025-26 for large industrial consumers, with further increases expected under the pending MERC tariff petition
  • Banking: Maharashtra allows annual banking of surplus renewable units; banking charges apply at 15% of banked units — higher than Gujarat or Rajasthan
  • ISTS advantage: Maharashtra consumers above 1 MW can source power from Rajasthan or Gujarat via ISTS, bypassing the state CSS under CERC's renewable energy ISTS waiver — this is the primary route for industrial consumers in Pune, Nashik, and Aurangabad
  • Wheeling: ₹0.65–₹0.85/unit for intra-state transmission through MSETCL

Maharashtra's CSS is a genuine structural challenge. However, the ISTS route and Group Captive structure both offer paths around it. For large industrial consumers (5 MW+ load), ISTS sourcing from Rajasthan typically delivers ₹2.50–₹4.00/unit landed savings even accounting for ISTS charges.

Industrial clusters served

ClusterIndustriesRecommended structureTypical saving
Pune / PCMC / ChakanAuto OEM, auto ancillary, pharmaISTS OA from Rajasthan or Group Captive₹2.60–₹4.20/unit
Nashik IndustrialAuto (Mahindra, Daimler, BOSCH), wine/agricultureGroup Captive or local OA₹2.00–₹3.80/unit
Aurangabad MIDCAuto, pharma, textilesISTS OA or rooftop₹2.40–₹3.80/unit
NagpurAgri processing, manufacturing, ITIntra-state OA or rooftop₹1.80–₹3.00/unit
Thane / Navi MumbaiChemical, pharma, warehousingRooftop + Green OA₹2.00–₹3.40/unit

Project types available in Maharashtra

  • Group Captive SPV (Maharashtra domestic): 5–50 MWp projects in Vidarbha (high solar), structured for MIDC-cluster manufacturers to hold 26%+ equity. CSS-exempt, 25-year horizon
  • ISTS open access supply (inter-state from Rajasthan): 1–100 MWp supply agreements from Rajasthan solar plants. Suited to large HT consumers above 5 MW load seeking CERC ISTS waiver on CSS
  • Rooftop + Green OA hybrid: For units 100 kW–1 MW. Rooftop covers 30–50% of load; off-site OA PPA covers the balance. Net landed cost ₹4.50–₹5.80/unit

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For the detailed Maharashtra open access regulatory guide, see Maharashtra Open Access Guide. For Pune-specific industrial PPA guidance, see Solar PPA for Pune Industrial Units.

Content credibility

  • Written by: Wattency Product Team
  • Reviewed by: Wattency Engineering and Domain Advisory
  • Last updated:
  • Editorial policy: See our Editorial Policy for sourcing and review standards.
  • Review cadence: Quarterly review or sooner when major product or policy changes are released.