Neemri Battery Storage: ACME Solar Adds 367 MWh

ACME Solar Holdings commissioned an additional 88.02 MW/366.969 MWh of battery capacity on October 30, 2026, at its Neemri battery storage project in Chittorgarh district, Rajasthan, according to an October 31 stock-exchange filing . The addition is part of a 250 MW/1,069 MWh firm and dispatchable renewable energy (FDRE) development operated through ACME Sigma Urja Private Limited, a wholly owned subsidiary.

The latest phase lifts cumulative commissioned storage to 159.660 MW/664.261 MWh, or approximately 64% of the planned power rating and 62% of planned energy capacity. ACME specified November 1 as the new phase’s commercial operation date, so the October 30 commissioning milestone should not be mistaken for confirmation that the phase was already in commercial service on October 31.

How much Neemri battery storage is commissioned?

The October 31 disclosure is best understood alongside ACME’s October 23 filing . That earlier document reported a further 17.91 MW/74.323 MWh commissioned at Neemri and a cumulative total of 71.640 MW/297.292 MWh. The October 30 phase adds 88.02 MW/366.969 MWh to those cumulative figures.

Based on the company’s stated 250 MW/1,069 MWh project size, another 90.340 MW/404.739 MWh remains outside the cumulative commissioned total. These are calculated differences, not a separate company announcement about the timing, configuration or status of the remaining equipment.

The newly commissioned phase accounts for more than half of the project’s currently reported commissioned energy capacity. That makes the latest step a substantial expansion of the installed storage reported by ACME Sigma Urja, rather than a minor incremental update.

What the MW and MWh figures actually tell us

Battery power capacity, measured in megawatts, describes the rate at which a system can discharge. Energy capacity, measured in megawatt-hours, describes the quantity of energy associated with that rating. Dividing the new phase’s reported 366.969 MWh by 88.02 MW gives a ratio of approximately 4.17 hours at rated power.

For Neemri battery storage, that arithmetic is useful for comparing project designs, but it is not evidence of a completed four-hour discharge test or a guaranteed usable dispatch duration. Battery operating limits, conversion losses, state-of-charge requirements and contractual delivery conditions can affect real-world output. Microgrid Media’s battery sizing guide explains why MW, MWh and usable duration should be evaluated separately.

Commissioning is not the same as commercial operation

ACME’s filing identifies October 30 as the date the additional equipment was commissioned and November 1 as its commercial operation date. The distinction matters for anyone tracking which project phases have reached their stated commercial milestones. As of the October 31 disclosure, the filing did not establish operating performance for the newly commissioned phase after its scheduled commercial operation date.

The Neemri project should also not be confused with ACME’s separate battery development at Kelan village in Bikaner district. Microgrid Media previously reported on ACME’s Kelan battery phase , which involves a different subsidiary, location and planned storage configuration. The common parent company and Rajasthan location do not make the two projects interchangeable.

Why phased storage deployment matters in India

Firm and dispatchable renewable energy projects use storage to help shift electricity delivery beyond the periods when solar or wind generation is available. A battery phase reaching commissioning adds potential dispatch capability, but the filing alone does not establish how much energy will be delivered under a particular contract or whether the entire associated renewable generation project is complete.

India’s Central Electricity Authority has emphasized storage’s role in integrating variable renewables. Its February 2025 advisory recommended that implementing agencies and state utilities include at least two hours of co-located storage equivalent to 10% of solar project capacity in future solar tenders. That is broader policy context, not proof that the advisory determines the contractual requirements for Neemri.

Other Rajasthan projects have paired renewable generation with storage, including Tata Power’s Kalasar FDRE development . Their differing power and energy ratings reinforce why project progress must be assessed against each facility’s own disclosed design and milestones.

What comes next for the Neemri project

The immediate checkpoint for Neemri battery storage is the November 1 commercial operation date specified for the new 88.02 MW/366.969 MWh phase. Further official disclosures would be needed to confirm any subsequent commercial-operation outcome, additional commissioning or completion of the remaining 90.340 MW/404.739 MWh.

For now, the verified development is precise: ACME Sigma Urja commissioned another battery phase on October 30, taking its cumulative reported commissioned capacity to 159.660 MW/664.261 MWh. The filing does not establish that the full 250 MW/1,069 MWh project is complete, and it provides no independent operating-test results for the new equipment.