1. At a Glance – Small Cap, Big Voltage ⚡
₹924 crore market cap. ₹157 stock price. 30% ROE. 30% ROCE. Debt-to-equity at a microscopic 0.06. And then — boom — Q3 FY26 revenue explodes 111% YoY to ₹159 crore while PAT jumps 105% to ₹16 crore.
Ladies and gentlemen, this is not a sleepy inverter company anymore. This is a power solutions player trying to sneak into the big league.
Stock is down 22.8% in 6 months, flat in 3 months (+1.4%), but fundamentals? They are doing push-ups.
TTM Sales: ₹353 crore
TTM PAT: ₹32.8 crore
Stock P/E: 28.2
Industry P/E: 25
So valuation slightly premium. Growth definitely premium.
But here’s the real masala — order book of ₹946 crore. That’s more than 2.6x annual revenue.
Question is simple:
Are we looking at India’s next energy infra challenger?
Or a smallcap running ahead of its cash flows?
Let’s open the inverter and see what’s inside.
2. Introduction – From Reseller to Renewable Rockstar?
Incorporated in 2008, Prostarm started as a humble reseller. They were basically the “battery shop uncle” who installs third-party UPS systems.
Then they said — “Why resell when we can build?”
Today they design, manufacture, assemble, integrate, install, maintain and now even build solar EPC and BESS projects.
Classic Indian entrepreneur evolution:
Step 1: Trade
Step 2: Manufacture
Step 3: EPC
Step 4: Energy storage
Step 5: IPO
They listed in June 2025 and raised ₹168 crore.
And now they are entering BESS (Battery Energy Storage Systems) with 150MW/300MWh scale projects.
From selling UPS to bidding for 12-year BOO energy contracts.
That escalated quickly.
But here’s what makes it interesting:
- 55.93% revenue from manufactured products
- 30.37% from third-party products
- 9.18% Solar EPC
- 4.51% value-added services
They are not just selling boxes. They are selling power continuity.
But continuity in revenue? That depends on execution and working capital.
And smallcaps with project-based revenue always come with one bonus feature — drama.
Ready?
3. Business Model – WTF Do They Even Do?
Imagine you are a bank with 500 ATMs.
If power fails, your ATM becomes a suggestion box.
That’s where Prostarm comes in.
Core Business – Manufactured Power Solutions
- UPS systems
- Inverters
- Lift inverters
- Lithium-ion battery packs
- Voltage stabilisers
