India's First Micro Substation Commissioned in Delhi by Tata Power-DDL and Japan’s Nissin Electric.

Economy Business

In June 2025, Tata Power Delhi Distribution Limited (Tata Power-DDL), in partnership with Japan's Nissin Electric Company, commissioned India's first-ever micro substation in Delhi. The project aims to reduce power infrastructure costs and improve electricity access in urban and difficult terrains.


      - This milestone project uses Japan’s advanced Power Voltage Transformer (PVT) technology, which enables direct voltage step-down from high transmission levels (66 kV) to usable levels (240 V), eliminating the need for traditional multi-stage power substations and reducing both cost and land use.

      - The micro substation was developed under Japan’s International Demonstration Project on Energy Efficiency Technologies, funded through NEDO (New Energy and Industrial Technology Development Organization). Tata Power-DDL and Nissin Electric had signed the agreement in August 2024 to begin the collaboration.

     

Main Point :-   (i) The first installation is located at Tata Power-DDL’s Smart Grid Lab in Rohini, New Delhi. With a compact 40 m² footprint, the micro substation delivers 100 kVA capacity, powering approximately 50–60 urban households and serving as a pilot for future city-wide deployment.

      (ii) This technology brings down infrastructure costs by around 96%, from â‚ą50–60 crore for traditional setups to as low as â‚ą2 crore, while also minimizing land requirements—making it ideal for dense urban zones with high energy demand and limited space.

(iii) The innovation supports India’s broader energy goals by improving last-mile connectivity and providing reliable electricity to load centres in hilly or difficult regions. It also helps in accommodating rapid urbanisation while reducing the need for complex grid infrastructure.
About Tata Power Company Limited (TPCL)

MD & CEO : Praveer Sinha
Headquarter : Mumbai
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