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Policy & tenders

What is BSES Rajdhani's 25 MWh battery storage project in Delhi?

The Delhi Electricity Regulatory Commission has approved the tariff for a 25 MWh battery energy storage project by distribution company BSES Rajdhani, reported by Mercom India on 11 September 2026. Tariff approval is the regulatory step that lets a discom recover the storage cost through its revenue requirement, clearing the way to build.

Published 12 September 2026 · Last updated 12 September 2026 · 1 min read · By Alpha Devraj ESS Research Desk

A regulatory milestone on a distribution-level battery, tracked alongside our tender coverage.

Tariff approved Mercom India · 11 Sep 2026

BSES Rajdhani 25 MWh BESS, Delhi

Energy

25 MWh

Offtaker

BSES Rajdhani

State

Delhi

Filed Tariff approved Built Live

A regulated tariff is what makes a discom-owned battery bankable — the cost enters the revenue requirement instead of sitting on the balance sheet.

Mercom India ↗

What it means

Twenty-five megawatt-hours is small against the gigawatt-hour state tenders that dominate the headlines, and that is the point: this is a distribution-level battery, sized to a feeder or a substation rather than to a generation portfolio. Batteries at this scale earn their keep by deferring a network upgrade, holding voltage at the end of a loaded feeder, and covering the evening peak that a city distribution licensee has to serve regardless of what the wholesale market is doing.

The regulatory step matters more than the size. A distribution company cannot simply buy storage and pass the cost through; the commission has to accept it into the approved revenue requirement first. Once a state regulator has done that once, the precedent is available to the next discom filing, which is how storage moves from pilot to routine network asset. The broader regulatory picture sits in our India BESS policy overview, and the peak-coverage economics in our peak shaving notes.

Assessing storage against a network or demand-charge problem? Run it through our BESS savings calculator or talk to our team.

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