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

Economy Business | Dated: 26 Jun 2025

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.

🎯 Key Highlights:

  • - 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.

💡 Other Important Facts:

  • (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 ₹50–60 crore for traditional setups to as low as ₹2 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.

📚 Test Your Knowledge:

Which Indian power distribution company has recently collaborated with Japan’s Nissin Electric to commission India’s first micro substation?

Correct Answer: Tata Power-DDL

🚀 Quick Recap:

About Tata Power Company Limited (TPCL)

  • MD & CEO : Praveer Sinha
  • Headquarter : Mumbai