Prostarm Info Systems is a power electronics company that makes the equipment which keeps the lights on and the servers running when India’s grid flickers - it designs, builds and services the backup power and energy storage systems that banks, hospitals, data centres and now entire electricity grids rely on. Born in 2008 as a small UPS installer in Pune, it won a nationwide ATM backup contract in 2010 that gave it a service footprint across India, then spent the next decade and a half working backwards from that customer base - first into maintenance, then into manufacturing its own UPS systems, inverters and battery packs, and most recently into building utility-scale battery storage plants. The recurring pattern is visible throughout: start by serving a customer’s immediate power need, then add the adjacent product or service that keeps them coming back, and use the cash from that to build the next capability in-house.
Business segments
Six engines at different stages - a manufactured-products core, two services that lock customers in, a systems-integration business that bundles everything together, and two early-stage bets on solar and grid-scale batteries - each built by following the customer one step deeper into their power problem.
1. Manufactured power products: the company’s own factory-built backbone
These are the UPS systems, inverters, battery packs and voltage stabilisers that Prostarm designs and assembles in its own plants - the core equipment that makes it a manufacturer, not just a reseller.
- Built in five manufacturing units - manufacturing is spread across two Pune units, a Navi Mumbai lithium-battery plant, a Jhajjar BESS facility, and a Gujarat UPS assembly line designed to churn out roughly 9 lakh units a year once fully running.
- Covers the full backup-power chain - the range runs from small home inverters (900 VA) up to online UPS systems of 500 kVA for data centres, plus the lithium-ion battery packs, servo stabilisers that hold voltage steady within 1% even when input swings by 50%, and isolation transformers that protect sensitive equipment.
- Customised, not just off-the-shelf - a dedicated engineering team tweaks products for specific customer sites, and every unit goes through factory tests including heat runs lasting up to 96 hours before it leaves the gate.
- Certified across multiple standards - the plants hold ISO certifications covering quality, environmental management, information security and energy management, plus BIS marks for the UPS, inverter and solar hybrid inverter lines.
2. System integration: the everything-bundled IT-infrastructure play
Prostarm doesn’t just sell the power backup - it will supply and stitch together the entire hardware stack, from desktops and servers to CCTV and video walls, with the UPS built in.
- One throat to choke for enterprise IT - the segment covers end-user computing (laptops, workstations), core hardware (servers, storage, networking), surveillance systems and digital displays, all integrated and maintained under a single contract.
- UPS is the wedge - because every server room and command centre needs uninterrupted power, the company’s own manufactured UPS systems become the anchor that pulls through the rest of the hardware bundle.
- Already delivered at state scale - executed projects include a ₹1,345 million integrated IT system for the Maharashtra CID and a ₹959 million system for the state’s health-services commissioner, both integrated IT solution systems along with UPS systems.
3. Third-party products and reverse logistics: the recurring-revenue flywheel
Batteries wear out, and Prostarm sells the replacements - along with buying back the old ones, creating a cycle that keeps customers returning long after the original equipment sale.
- Batteries are the consumable - the company buys batteries in bulk from domestic manufacturers and supplies them as part of its UPS and inverter systems, knowing that every battery has a limited life and will need swapping out.
- Buy-back locks the relationship - when a customer replaces old or faulty UPS units and batteries, Prostarm offers to purchase the end-of-life equipment, often as a built-in contract term, then handles responsible disposal and recycling.
- Cross-sells the service contract - the replacement cycle opens a natural door to sell annual maintenance contracts and off-warranty support, turning a product sale into a multi-year revenue stream.
4. Value-added services: rent it, fix it, keep it running
Prostarm rents out its power equipment to ATM operators and others who need temporary backup, then earns steady fees maintaining everything it has ever installed.
- UPS-as-a-service for ATMs - the company deploys its own UPS systems and batteries at ATM sites on rental, with terms customised to the backup duration and capacity each site needs, a business line that traces straight back to its original 2010 nationwide ATM contract.
- Warranty and beyond - in-warranty support covers repairs and replacements for one to five years; after that, paid annual maintenance contracts take over with routine servicing and preventive checks billed periodically.
5. Solar EPC: the rooftop builder
Prostarm designs and installs rooftop solar plants for commercial and industrial clients, a business it entered in 2018 that now counts over 100 completed sites.
- Turnkey from assessment to maintenance - the company handles site surveys, system design, equipment buying, installation, commissioning and ongoing operations support for rooftop photovoltaic plants.
- Small today, with a chunky order book - the segment has delivered more than 10.56 MW of rooftop solar across over 100 sites, and carried an order book of ₹1,851 million as of April 2026, including a 2 MW project across 134 schools in Rajasthan.
6. Battery Energy Storage Systems: the grid-scale bet
This is Prostarm’s leap from backing up individual buildings to backing up the electricity grid itself - building and owning massive battery plants that store power for state utilities.
- From manufacturer to project developer - the company is setting up a 1.2 GWh battery-pack factory in Jhajjar, Haryana, and has already won contracts to build and operate two large grid-connected battery storage projects: a 30 MW/120 MWh plant in Bihar and a 150 MW/300 MWh plant in Karnataka.
- Earns a monthly rental, not just a one-time sale - both state projects run on 12-year rental models (one under Build-Own-Operate-Transfer, the other Build-Own-Operate), meaning Prostarm gets paid every month for making stored power available to the grid.
- A partner brings the battery know-how - through an exclusive agreement with Shenzhen Topband, the Chinese partner supplies the semi-knocked-down kits and technology while Prostarm assembles and sells the finished systems in India under a joint brand, with a minimum purchase commitment of USD 10 million over 18 months.
- Open to selling the projects once built - management has signalled it may sell down or fully divest these BESS assets after they are operational, treating them more as built-to-sell infrastructure than permanent holdings.
Group structure and partners
A parent company with three manufacturing units, two project-specific subsidiaries for the grid-battery ventures, and a Chinese technology partner - all held together by a promoter group that has been in power electronics for over 18 years.
- The parent, Prostarm Info Systems Ltd, directly operates the Pune Unit-1 and the Navi Mumbai lithium-battery plant, while its wholly owned subsidiary Prostarm Energy Systems runs Pune Unit-2, though all three are being reshuffled: UPS production is moving to a new Gujarat plant, servo and transformer lines to Navi Mumbai, and lithium battery assembly to Gujarat.
- Two special-purpose vehicles - Prostarm Bihar BESS and Prostarm Karnataka BESS - were incorporated in mid-2025 as wholly owned shells to hold the respective state grid-battery projects, each with modest authorised capital of ₹15 lakh.