MAHAPREIT Launches 100 MW BTM Rooftop Solar Tender

16 Jun 2026 CW Team

The appointed developer will handle design, engineering, supply, financing, installation, testing and commissioning of the solar photovoltaic system and any Battery Energy Storage System (BESS) in line with the Ministry of New and Renewable Energy (MNRE), Central Electricity Authority (CEA), Maharashtra Electricity Regulatory Commission (MERC) and the respective distribution company (DISCOM) rules and the Maharashtra Renewable Energy Policy 2025–36. The contract includes 25 years of operation and maintenance and the supply of ALMM-compliant modules, inverters, balance-of-system equipment, metering and SCADA. Prior intimation through MAHAVITARAN or the respective DISCOM portal is mandatory before installation.

The tender is split into four categories, each allocated 25 MW to make up the 100 MW portfolio. Category A1-S covers 20–100 kilowatt (kW) solar-only installations while A1-B covers 20–100 kW projects with 30 per cent BESS for two hours. Category A2-S covers 101–250 kW solar-only projects and A2-B covers 101–250 kW projects with 50 per cent BESS for two hours. All components must meet safety and regulatory certifications and developers must secure electrical clearances during the online application.

The BESS must be fully integrated with the solar PV system to supply Behind-the-Meter load and be designed to deliver rated power for a minimum of two hours of continuous discharge. Developers must guarantee capacity retention of 80 per cent at Year 10 and 70 per cent at Year 15 from the Commercial Operation Date (CoD); any cell or module replacements must be covered by the RESCO within the quoted fixed tariff. Comprehensive BESS operation and maintenance must be provided for 25 years and projects must achieve a minimum Capacity Utilisation Factor (CUF) of 19 per cent per annum.

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The Mahatma Phule Renewable Energy & Infrastructure Technology Limited (MAHAPREIT) has issued a tender for the development of 100 Megawatt (MW) of rooftop solar projects across Maharashtra under the renewable energy service company (RESCO) model. The procurement covers Behind-the-Meter (BTM) systems with and without Battery Energy Storage System (BESS) and the tender document is priced at Rs 10,000 plus 18 per cent GST. Bids close on June 23, 2026. The appointed developer will handle design, engineering, supply, financing, installation, testing and commissioning of the solar photovoltaic system and any Battery Energy Storage System (BESS) in line with the Ministry of New and Renewable Energy (MNRE), Central Electricity Authority (CEA), Maharashtra Electricity Regulatory Commission (MERC) and the respective distribution company (DISCOM) rules and the Maharashtra Renewable Energy Policy 2025–36. The contract includes 25 years of operation and maintenance and the supply of ALMM-compliant modules, inverters, balance-of-system equipment, metering and SCADA. Prior intimation through MAHAVITARAN or the respective DISCOM portal is mandatory before installation. The tender is split into four categories, each allocated 25 MW to make up the 100 MW portfolio. Category A1-S covers 20–100 kilowatt (kW) solar-only installations while A1-B covers 20–100 kW projects with 30 per cent BESS for two hours. Category A2-S covers 101–250 kW solar-only projects and A2-B covers 101–250 kW projects with 50 per cent BESS for two hours. All components must meet safety and regulatory certifications and developers must secure electrical clearances during the online application. The BESS must be fully integrated with the solar PV system to supply Behind-the-Meter load and be designed to deliver rated power for a minimum of two hours of continuous discharge. Developers must guarantee capacity retention of 80 per cent at Year 10 and 70 per cent at Year 15 from the Commercial Operation Date (CoD); any cell or module replacements must be covered by the RESCO within the quoted fixed tariff. Comprehensive BESS operation and maintenance must be provided for 25 years and projects must achieve a minimum Capacity Utilisation Factor (CUF) of 19 per cent per annum.

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