The KDM Complex, the administrative head office of the Oil and Natural Gas Corporation’s (ONGC) Mehsana asset, is saving nearly ₹4 million (~$46,800) to ₹4.5 million (~$52,650) annually on power expenses after installing a 370-kW solar carport.

The solar component of the project alone is expected to achieve payback within three to four years.

The solar system has been installed over ONGC’s new parking space, which includes integrated electric vehicle (EV) charging infrastructure. The facility enables simultaneous charging of 20 cars through 10 DC chargers and supports charging for 30 two-wheelers.

The carport provides parking space for 140 cars and 132 two-wheelers.

The power generated by the solar system will be used for in-house consumption, with priority given to EV charging. The system has been designed to deliver recurring monthly savings through captive solar generation.

The project, costing ₹84.1 million (~$873,597), was set up by Imagine Powertree and commissioned in December 2025.

Apart from the solar system, the project cost also covered solar carport structures, EV charging infrastructure, and associated civil and electrical works.

Before this installation, the KDM Complex already had a 285-kW rooftop solar project on its premises, taking the facility’s total solar capacity to 655 kW.

Hirak Ray, Deputy General Manager, Mechanical, at the ONGC facility, said the project was aimed at providing parking space for employees while encouraging EV adoption. Based on prior success with the 285-kW rooftop solar system, an additional solar carport project was planned.

Ray said that during winter, when generation exceeds consumption, the 370-kW solar system supplies nearly 40-50% of the facility’s power requirement. Along with the existing rooftop project, solar now meets 50-60% of ONGC’s power requirement at the facility.

The carport solar system comprises Rayzon Solar’s monocrystalline modules and Sungrow inverters.

The system can generate 1,450 to 1,600 units daily and around 540,000 to 580,000 units annually.

Through the solar system, ONGC can meet 45,000 to 48,000 units of its monthly power requirement through renewable energy.

The company plans to evaluate integrating battery energy storage systems for peak-load management, EV charging support, backup power, and increased renewable energy utilization.

Imagine Powertree said that since the project was being set up on multiple underground facilities more than 25 years old, one of the major challenges related to civil and foundation work for the project.

According to Mercom India’s Q4 and Annual 2025 India Rooftop Solar Market Report, Gujarat led rooftop solar installations, accounting for nearly 25% of cumulative installations.

Mercom India will host the sixth edition of the Mercom India Renewables Summit 2026 on July 1 and 2, 2026, at the Hyatt Regency in New Delhi. The summit will bring together key stakeholders from the renewable energy sector and drive discussions backed by Mercom’s proprietary global research and market intelligence. You can register for the event here.