HVDC Mumbai infeed: Hitachi-Adani commission 1,000 MW

What was commissioned in Mumbai

Hitachi Energy and Adani Energy Solutions said they have commissioned one of the world’s largest HVDC city center infeeds in Mumbai. The companies said the project increases electricity supply coming from outside the city by 50%. The new link can transport up to 1,000 MW into Mumbai, which is among the world’s most densely populated megacities. They said the system supports the daily needs of more than 20 million people.

The development matters because large cities often face constraints in expanding transmission infrastructure within city limits. A city-center infeed using HVDC is designed to bring bulk power into a dense load pocket while managing space and right-of-way limitations. In Mumbai’s case, the project is positioned as a supply augmentation step by adding a new high-capacity corridor into the city.

Kudus-Mumbai HVDC Light: the project outline

The HVDC technology being deployed is Hitachi Energy’s HVDC Light transmission system, which is being used in the ongoing Kudus-Mumbai transmission line project. The link involves an 80 km HVDC transmission corridor between the Kudus substation in Maharashtra and the Aarey substation in Mumbai.

Adani Electricity Mumbai Infra Ltd is implementing the project. The stated objective is to augment Mumbai’s power supply by 1,000 MW, bringing additional power from regions such as Gujarat and Rajasthan. The commissioning announcement links this new infeed directly to a higher ability to import electricity into Mumbai from outside the city.

Why HVDC is being used for a city-center infeed

HVDC is typically used to move large blocks of electricity over long distances or into constrained urban areas. In the Mumbai project, Hitachi Energy has highlighted the use of a compact HVDC system and underground cables rather than overhead lines. The company has stated that around 50 km of underground cables will be used.

Hitachi Energy has also stated that using underground cables instead of overhead lines will save nearly 2.3 square kilometers of land, which it equated to more than 320 soccer fields. For investors tracking grid infrastructure, this highlights the growing role of compact transmission technologies where land acquisition and clearances can be difficult.

India HVDC landscape: Hitachi’s installed base

Hitachi Energy’s technology has a significant presence in India’s HVDC ecosystem. The company noted that nine out of 17 HVDC links or transmission systems in India are based on Hitachi Energy technology.

The company has also pointed to its longer operating history in India, including the Vindhyachal project in 1989. It also referenced projects such as the multi-terminal North-East Agra link, and Raigarh-Pugalur as another UHVDC installation. These references matter because large HVDC systems are complex, and grid operators often weigh proven execution and operating performance when awarding new packages.

Separate mega order: 6,000 MW Bhadla-Fatehpur HVDC link

In another major development involving Adani Energy Solutions and Hitachi Energy, Rajasthan Part I Power Transmission Limited, a wholly owned subsidiary of Adani Energy Solutions Limited (AESL), awarded a contract to a consortium of Bharat Heavy Electricals Limited (BHEL) and Hitachi Energy India Limited.

The project entails the design and execution of a 6,000 MW, ±800 kV, bi-pole and bi-directional HVDC transmission system. It is intended to facilitate the transfer of renewable energy from Bhadla in Rajasthan to Fatehpur in Uttar Pradesh. The HVDC line is described as a 950 km transmission link in multiple disclosures.

Project timelines were described differently across sources in the provided material. One account said the link is scheduled for completion by 2029 and is expected to be operational by 2029. Separate filings referenced that the formal contract agreement will be executed later and that the project is set for completion by 2030.

What the Bhadla-Fatehpur project is designed to do

The Bhadla-Fatehpur HVDC system is positioned as part of India’s larger renewable energy evacuation and interstate transmission buildout. The project is described as enabling bi-directional power flow control and improving grid stability to support renewable integration.

Hitachi Energy has said it has integrated over 150 GW of HVDC links globally. In the India project context, the ±800 kV bi-pole, bi-directional design is described as enabling flexible power flow management, which becomes important as variable renewable generation ramps up across regions.

The project is also described as being able to power approximately 60 million households in India. It is linked in the provided text to India’s mission to achieve 500 GW of power from renewable sources by 2030.

Equipment scope and domestic manufacturing details

The scope mentioned for the Rajasthan HVDC project includes converter transformers, AC/DC control and protection systems, thyristor valves, 765 kV/400 kV grid connections, and auxiliary systems.

BHEL, in its partnership with Hitachi Energy India Limited, is also executing the Khavda-Nagpur ±800 kV, 6,000 MW HVDC link. As part of the contract scope described, BHEL will manufacture and supply equipment such as converter transformers, shunt reactors, filter bank capacitors, medium-voltage switchgear, and instrument transformers from its Bhopal facility.

The provided material also states that thyristor valves will be produced at BHEL’s Electronics Division in Bengaluru. It further mentions that BHEL’s Transmission Business Group will be responsible for designing, supplying, and installing a 765 kV/400 kV power evacuation system at Fatehpur, along with 400 kV AC substations at Bhadla and Bhadla Extension.

Funding and corporate commentary

Hitachi Energy India Limited said it recently completed fundraising of INR 2,520.82 crores through a Qualified Institutional Placement (QIP). It said proceeds are proposed to be used for capacity expansions, working capital including for mega projects including HVDC, and other growth avenues.

On the Adani Energy Solutions side, CEO Kandarp Patel said the company is enabling efficient evacuation of renewable energy and connecting it to the national grid as part of India’s decarbonisation journey. Hitachi Energy India’s Managing Director and CEO, N Venu, said the Kudus-Mumbai order reiterates confidence in the company’s technology expertise and execution capabilities, and supports the country’s commitment to energy transition.

Key facts at a glance

What it means for the power transmission sector

The Mumbai commissioning highlights how transmission upgrades are increasingly being framed around reliability, space constraints, and the ability to import power into major demand centers. For companies in the transmission equipment and EPC ecosystem, such projects can translate into sustained demand for converter stations, controls, power electronics, transformers, and high-voltage switchgear.

The Rajasthan project underscores the scale of renewable evacuation infrastructure now being tendered, with large ±800 kV HVDC corridors designed for bulk transfer and grid stability. The emphasis on bi-directional operation and stability features reflects the broader trend of building flexible networks to manage intermittency and regional demand swings.

Conclusion

Hitachi Energy and Adani Energy Solutions commissioning the Mumbai HVDC city-center infeed adds up to 1,000 MW of import capability and is presented as a 50% increase in power coming into the city from outside. In parallel, Adani Energy Solutions’ subsidiary has awarded a 6,000 MW, ±800 kV HVDC project to a Hitachi Energy India-BHEL consortium for renewable energy transfer from Bhadla to Fatehpur.

Next milestones to track, based on the provided disclosures, include further execution updates on the Kudus-Aarey corridor and clearer schedule confirmation for the Rajasthan HVDC link, which has been referenced with 2029 and 2030 completion timelines in different sources.