# ACME Solar and Juniper Green Energize Over 538 MWh of Utility-Scale BESS Across Rajasthan Substations

> Indian clean power developers ACME Solar and Juniper Green Energy have commissioned over 538 MWh of grid-connected battery storage across critical transmission nodes in Rajasthan, energizing a 107.4 MW / 437.5 MWh BESS at the Neemuch substation and 100.6 MWh at Bikaner Phase II to curb renewable curtailment.

- **Publish Date:** 2026-09-30
- **Category:** energy-storage
- **Reading Time:** 5 min
- **Original Source Citation:** [Ministry of New & Renewable Energy (MNRE) & Rajasthan Urja Vikas Nigam](https://mnre.gov.in/news/acme-juniper-energize-utility-scale-bess-rajasthan-interstate-substations-2026)
- **Tags:** ACME Solar, Juniper Green, BESS, Rajasthan, Substation Interconnection, Grid Stability, Neemuch Substation, Bikaner Phase II
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## Large-Scale Storage Commissioning at Critical Interstate Hubs

On September 30, 2026, ACME Solar operationalized two utility-scale battery energy storage systems totaling 107.36 MW and 437.49 MWh connected directly into the interstate transmission system (ISTS) Neemuch pooling substation.

Concurrently, Juniper Green Energy’s subsidiary energized a 100.64 MWh battery system integrated into the Bikaner Phase II high-voltage substation yard. Together, these systems establish over 538 MWh of dispatchable storage buffering high-density solar generation in western India.

## Step-Up Transformers and Thermal Conditioning Systems

Both projects utilize modular containerized lithium-iron-phosphate (LFP) chemistry coupled to dedicated 33/400 kV outdoor step-up transformers with low dielectric losses and forced-liquid cooling systems engineered to withstand summer desert temperatures exceeding 50°C.

The installations feature advanced battery management systems (BMS) with sub-second frequency response algorithms to arrest rate-of-change-of-frequency (RoCoF) events and provide evening solar peak displacement.

## Unlocking Green Power Wheeling to National Demand Centers

By absorbing midday solar over-generation, the storage assets resolve severe transmission line thermal overload along the Rajasthan-Madhya Pradesh grid corridor, wheeling firm renewable power during peak night hours.

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