India Solar Energy Market Highlights – December 2025

This month highlighted the accelerating pace of India's solar energy transition, with major EPC contract awards, manufacturing investments, grid-scale capacity additions, and policy-backed financing. Floating solar arrays and rooftop adoption programs were as active as gigawatt utility projects and domestic production plants. These trends indicate a concerted effort to enhance energy security, localize supply chains, and decarbonize power, transport, and industrial infrastructure. Therefore, these factors indicate that solar energy is no longer a niche solution but a fundamental pillar of India's clean energy strategy.

India’s Solar Momentum Accelerates in December 2025 with Utility-Scale Projects, Manufacturing Investments, and Rooftop Expansion

1. KPI Green Energy Secured INR 489 Cr (~USD 54.25 million) Floating Solar EPC Order

On December 2, 2025, KPI Green Energy received an EPC contract from Gujarat State Electricity Corporation Limited (GSECL), worth INR 489.17 crore (~USD 54.25 million) to construct and install a Floating Solar Photovoltaic (FSPV) Plant on the Kadana Dam Reservoir located in Mahisagar, Gujarat. This floating solar installation's capacity will be 142MW (DC)/110MW (AC).

• The EPC contract covers all stages of the project, starting from Conceptual Design through Engineering, Procurement, Construction, and Commissioning of the floating solar energy system.

• In addition to these stages, the agreement also incorporates the construction of Grid Connection Infrastructure, i.e., the construction of a 33kV underground cable from the Floating Solar pool station to Kadana Substation and the construction of 33/220kV bays at Kadana Substation.

• KPI Green Energy Ltd will also maintain the Floating Solar System for the next 10 years, per this contract. The anticipated completion time for this Project is 18 months.

2. ADB Approved USD 650 Million Loan to Accelerate Rooftop Solar Adoption in India

On December 2, 2025, the Asian Development Bank (ADB) approved a USD 650 million policy-based loan to help the Government of India accelerate rooftop solar adoption and expand access to clean, affordable energy for 10 million households by 2027.

The financing under Subprogram 1 of the Accelerating Affordable and Inclusive Rooftop Solar Systems Development Program will support the government’s flagship initiative, Pradhan Mantri Surya Ghar: Muft Bijli Yojana (PMSGMBY), which aims to make rooftop solar systems widely accessible nationwide.

3. Insolation Green Energy Private Limited Secured INR 516.05 Crore (~USD 57.23 million) Solar Module Supply Orders

On December 5, 2025, Insolation Energy Ltd. announced that its wholly owned subsidiary, Insolation Green Energy Private Limited, secured sale orders totaling INR 516.05 Crores (~USD 57.23 million), marking a major breakthrough for the company's further development in the renewable energy segment.

• The subsidiary was awarded a large purchase order of the value of INR 357.00 Crores (approx. USD 39.59 million) by a reputed Independent Power Producer (IPP) to supply advanced N-type TOPCon Solar PV Modules, which further reinforced its position in the high-efficiency module category.

• In further development, Insolation Green Energy Pvt. Ltd. received purchase orders of INR 159.05 Crores (approx USD 17.64 million) to supply Solar PV Modules in several companies pursuing projects under the PM-KUSUM scheme in various places in Andhra Pradesh.

4. Andhra Approved INR 4,000 Crore (~USD 443.6 million) ReNew Photovoltaics Solar Ingot, Wafer Facility

On December 5, 2025, Andhra Pradesh approved a major solar manufacturing plant. ReNew Photovoltaics will build an INR 4,000-crore (~USD 443.6 million) solar ingot and wafer production facility at Rambilli in Anakapalli district.

• The 6 GW greenfield facility of ReNew Energy Global PLC's subsidiary will manufacture the core building blocks used in solar cells and modules.

• The purpose of this project is to increase the solar capacity of India and minimize the use of imported components. The plant is projected to be operational by January 2028 and will create numerous jobs.

5. ReNew Announced Long-Term Agreement with Google to Enable 150 MW Solar Project in Rajasthan

On December 16, 2025, ReNew Energy Global Plc (“ReNew”), a leading decarbonization solutions company, announced that it had signed a long-term agreement with Google to develop a new 150 megawatt (MW) solar project in Rajasthan.

• In this partnership, Google will acquire the project's energy attributes through ReNew. This is a long-term procurement that is crucial to the project's bankability and will help Google advance its efforts to address value-chain emissions.

• The 150 MW solar project planned to be commissioned in 2026 is anticipated to produce about 425,000 MWh of clean electricity per year, which is to power more than 360,000 households in India.

• Under this agreement, ReNew has a committed commercial and industrial portfolio that extends to 2.7 gigawatts (GW), establishing its status as one of the top corporate clean energy and carbon reduction solutions providers in India.

6. NCRTC to Develop 110 MW Solar Plant in Uttar Pradesh to Power Namo Bharat Corridor

On December 16, 2025, the National Capital Region Transport Corporation (NCRTC) planned to install a 110MW solar power facility in Uttar Pradesh to provide clean energy to the Namo Bharat corridor.

• The project aims to improve sustainability and carbon emission minimization, as well as the corridor's operational sustainability, through reliable renewable energy sources, demonstrating India's commitment to green infrastructure in mass transit systems.

• The solar power plant will be ready within 24 months, and is estimated to supply approximately 60 per cent of the corridor's total electricity demand.

7. NTPC Commissioned Solar Projects of 360 MW in Gujarat, Rajasthan: Total Capacity hits 85 GW+

On December 17, 2025, NTPC declared commercial capacity addition of 359.58 MW through the various solar projects of its subsidiaries in the states of Gujarat & Rajasthan, taking the Group's commercial capacity to over 85.5 GW.

• NTPC declared Commercial Operation Date (COD) of part capacity of 243.66 MW out of 1255 MW Khavda -1 Solar PV project in Gujarat of NTPC Renewable Energy Ltd, a step-down subsidiary of NTPC through its subsidiary NGEL.

• Further, the company declared COD of 78 MW out of 245 MW capacity of NTPC’s Nokh Sokar PV project (3x 245 MW) in Rajasthan.

• The company also declared COD of part capacity of 37.925 MW out of 300 MW at Khavda Solar Energy Project under the 450 MW Hybrid Tranche V project in Gujarat of NTPC REL.

• With this, the total installed and commercial capacity of the NTPC group reached 85541 MW.

NTPC Ltd. is contributing one-fourth of India’s power requirements and has an installed capacity of 85 GW+, with an additional capacity of 30.90 GW under construction, including 13.3 GW of renewable energy capacity. The company is committed to achieving 60 GW of renewable energy capacity by 2032, strengthening India’s Net Zero goals.

8. Luminous Power Technologies Secured a 350 MW solar project under the PM-KUSUM Scheme

On December 22, 2025, Luminous Power Technologies secured multiple orders to install 350 MW of solar power projects under the PM-KUSUM scheme in Rajasthan.

• Under the project model, the electricity produced by these solar plants will be marketed to the local distribution companies.

• The combined installations have the potential to produce 500-560 million units of electricity every year, which could compensate for around 402,000 to 459,000 tonnes of carbon dioxide emissions annually, which can offset the yearly growth of about 19-22 million trees.

• The installations are expected to begin in early 2026.

9. Tata Power Renewable Energy Limited Signed an MoU with The Bengal Chamber of Commerce & Industry (BCC&I) to Accelerate Rooftop Solar Adoption Among MSMEs in West Bengal

On December 30, 2025, Tata Power Renewable Energy Limited (TPREL) signed a Memorandum of Understanding (MoU) with The Bengal Chamber of Commerce & Industry (BCC&I).

• The MoU will spur systematic awareness and outreach activities of MSMEs in major industrial sectors in West Bengal, which will strengthen the TPREL focus on rapidly encouraging the utilization of rooftop solar by Micro, Small, and Medium Enterprises (MSMEs) in the state.

10. Tata Power Renewables Delivered the Largest 1 GW DCR-Compliant Solar Project for SJVN; Project to supply clean power across Rajasthan, Jammu & Kashmir, and Uttarakhand

On December 30, 2025, Tata Power Renewable Energy Limited (‘TPREL’) successfully commissioned SJVN Limited’s landmark 1 GW ( 1,000 MW AC / 1,400 MWp DC) DCR-compliant solar power project. This milestone marks the largest solar project commissioned by TPREL to date and one of the most expansive renewable energy projects.

India’s Solar Sector Enters an Execution-Driven Growth Phase with Strong Utility, Manufacturing, and Rooftop Momentum

The depth of solar activity reported in December demonstrates how India is increasing capacity while enhancing manufacturing, fundraising, and decentralized adoption. Additions by NTPC and Tata Power at the utility scale, coupled with state-supported manufacturing authorizations and PM-KUSUM deployments, enhance the long-term capacity development. Multilateral financing and rooftop solar projects also expand access to clean energy for households and MSMEs. These projects are transitioning from approval to execution, which means the solar industry in India will play a decisive role in meeting its climate commitments, reducing emissions, and promoting sustainable economic development.