How do you bid on a battery energy storage tender in India?

A battery energy storage tender in India is not won at the auction screen — it is won weeks earlier, in how carefully you read the tender document and assemble your qualification papers. Agencies like SECI (Solar Energy Corporation of India) and GUVNL (Gujarat Urja Vikas Nigam Limited) publish a Request for Selection (RfS), and the RfS is the rulebook. Every number that decides whether your bid is even opened — net worth, earnest money, guarantees, deadlines — is spelled out in it.

This guide walks through the steps in order: how to read the RfS, how to qualify, what money you must post, and how the reverse e-auction actually decides the winner. For the specific structure of the tenders themselves, see our SECI standalone storage tenders explainer and GUVNL tender guide.

Step 1 — Read the RfS end to end

Before anything else, read the whole document. The sections that decide your bid are usually:

• Scope and model. Most standalone tenders are Build-Own-Operate (BOO): you build, own and run the battery and sell a service, not the asset.
• Capacity and duration. Stated as power and energy together, e.g. 125 MW / 500 MWh (a 4-hour system) or 500 MW / 1000 MWh (2-hour). Duration drives your cost and your bid.
• Availability and round-trip-efficiency guarantees. GUVNL and SECI RfS documents commonly require around 95% annual system availability and roughly 85% AC-to-AC monthly round-trip efficiency, with liquidated damages for shortfalls.
• Cycling and degradation obligations. Tenders often require two operational cycles per day, and you must maintain capacity through the term — degradation must be covered by an augmentation plan, not wishful assumptions.
• VGF cap. Where Viability Gap Funding applies, the ceiling is typically ₹18 lakh per MWh, drawn from the Power System Development Fund.

Step 2 — Check you actually qualify (net worth)

Financial eligibility is a hard gate. Recent tenders benchmark a minimum net worth per MW of capacity you bid for. GUVNL’s standalone BESS rounds have required roughly ₹74 lakh (₹7.4 million) per MW, measured as of the last audited financial year. SECI rounds use similar per-MW net-worth tests. Bid for more capacity than your balance sheet supports and you are disqualified before the price stage. Consortium bidding is usually allowed, with the lead member holding a minimum stake — a common route for newer entrants.

Step 3 — Buy the document and post the EMD

To submit, you pay a non-refundable document fee (SECI’s Odisha round was reported around ₹20,000; GUVNL charges a document fee plus a separate processing fee with GST) and post an Earnest Money Deposit (EMD), also called bid security. In SECI’s 125 MW / 500 MWh Odisha tender the EMD was reported at roughly ₹9 lakh per MW, submitted as a bank guarantee or surety bond. The EMD is forfeited if you win and then walk away, so it enforces serious bids only.

Step 4 — Submit the two-part bid

Indian BESS tenders use a two-envelope (two-bid) system:

1. Techno-commercial bid — your qualification papers: net-worth certificate, statutory documents, technical experience, and the signed RfS undertakings.
2. Financial bid — your price, which stays sealed until the technical stage is cleared.

Only bidders whose techno-commercial bid is found responsive move forward. This is where careless bidders lose: missing a net-worth CA certificate, an expired statutory document, or an incomplete degradation and augmentation annexure can knock you out before your price is ever seen.

Step 5 — Win the reverse e-auction

Qualified bidders then compete in a reverse e-auction (e-RA) on the agency’s portal. It is “reverse” because the lowest bid wins, and bidders can undercut each other live within a set window. Two price formats appear:

• Capacity charge (₹/MW/month) — the monthly fee to keep the battery available. Lowest wins.
• VGF (₹/MWh) — where a grant backs the tender, bidders instead bid down the subsidy they need; the one asking for the least support wins. This is explained in our VGF scheme deep-dive.

The winner receives a Letter of Award (LoA) and then must post a Performance Bank Guarantee (PBG) — reported around ₹22.5 lakh per MW in SECI’s Odisha round and roughly ₹1.25 lakh per MW in some GUVNL rounds — plus, where VGF is drawn, a separate bank guarantee for the full VGF amount, released only after several years of operation.

Common mistakes bidders make

• Bidding for more MW than your net worth supports — an instant disqualification, not a negotiation.
• Assuming unrealistically slow degradation with no augmentation plan, which meets early-year targets but fails later and triggers penalties.
• Skipping the pre-bid meeting. Agencies issue clarifications and amendments that change terms; missing them means bidding on stale rules.
• Underpricing the reverse auction below what your supply chain can deliver, then facing liquidated damages on availability and efficiency.
• Ignoring the commissioning deadline — typically 18 to 24 months — where land or connectivity delays can forfeit VGF benefits.

Getting the battery and its guarantees right from the start matters as much as the bid math. Our grid-scale product range and standalone BESS solutions are built to these SECI and GUVNL availability and round-trip-efficiency specs, and you can follow live rounds on our tender tracker.

What this means for you

• If you are a developer or EPC: treat the RfS as a checklist. Confirm net worth per MW first, model your bid around either a lean capacity charge or the lowest survivable VGF, and lock in back-to-back availability and degradation warranties with your supplier before you bid — the liquidated damages are real.
• If you are a DISCOM (distribution company) or state utility: a well-structured RfS with clear qualification, EMD and PBG rules is what attracts credible bidders and drives the price down; loose terms attract the ones who default.
• If you are a supplier or new entrant: consortium bidding and public tenders are the fastest route in, provided your paperwork and performance guarantees are airtight.

Tender terms — net-worth thresholds, EMD and PBG amounts, VGF caps and deadlines — change by notification, so treat every figure here as a July 2026 snapshot and confirm the live RfS before you commit. To size a project around a specific tender or to structure your bid, try our BESS savings calculator or get in touch with our team.

Policy snapshot as of July 2026. Tender terms, guarantees and eligibility change by SECI, GUVNL and state notification; verify the current provisions in the live Request for Selection before financial decisions.