E-Reverse Auction (e-RA)

An E-Reverse Auction (e-RA) is a real-time online competitive event where technically pre-qualified bidders bid against each other by successively lowering their prices over a defined period. Unlike a sealed-bid tender where the financial envelope is submitted once and never changed, a reverse auction lets bidders see the current lowest price and revise their own offer downward as many times as they choose before the auction closes. The lowest valid bid at the end of the auction wins the contract.

What is E-Reverse Auction in government procurement?

E-Reverse Auctions are most extensively used on the Government e-Marketplace (GeM) for goods and standard services above Rs 5 lakh where at least three sellers are available. PSUs such as NTPC, Coal India, ONGC, and BHEL also conduct e-RAs on their own portals for high-volume commodity purchases like fuel, chemicals, raw materials, and bulk consumables.

The process follows a defined sequence. First, a standard two-cover tender is issued. Technical bids are evaluated and a list of qualified bidders is prepared. All qualified bidders are then invited to the e-RA event at a scheduled date and time. At the start of the auction, the system typically reveals the sealed-bid L1 price as the starting point. Bidders can see the current lowest price on screen but not who placed it. Each bid must be lower than the current L1 by at least the specified decrement step, which is a fixed amount or a percentage set by the buyer before the auction begins.

The auction runs for a fixed time, commonly one to three hours. Auto-extension rules prevent last-minute sniping: if a new valid bid arrives in the final few minutes, the auction automatically extends by a set increment, typically 10 or 15 minutes, until no new bids are received during an extension window. The final lowest bid at close is the winner, provided it is not unreasonably below the government's estimated cost.

Under GFR 2017 and GeM operational guidelines, e-RA results are directly actionable. The buyer can place the order on the auction winner without a separate committee evaluation of the financial result.

Why it matters for bidders

E-Reverse Auctions create a different competitive environment from sealed-bid tenders. In a sealed bid, a firm submits its best price once without knowing whether it is competitive. In an e-RA, real-time price visibility forces a decision under pressure: hold your price and risk losing, or reduce and potentially go below your floor.

Before entering an e-RA, firms must do two things. First, calculate a firm cost floor based on material, labour, and overhead for the specific item, below which the order would be loss-making. Second, decide a walk-away price at which point they will stop bidding rather than win a loss-making contract. Without these two numbers, firms get caught in the heat of the moment and bid below their actual cost.

Auto-extension rules mean the auction always ends at a natural floor rather than a scheduled time, so there is no advantage in waiting until the last second to bid. Firms should monitor the current L1 throughout and bid only when they have headroom above their cost floor.

Example

A railway zone floats an e-RA for 500 MT of bitumen emulsion. After technical qualification, four suppliers are invited. The sealed-bid L1 was Rs 48,500 per MT. The auction opens at this price with a decrement step of Rs 200 per MT. Over 90 minutes, bidding drives the price down to Rs 46,100 per MT, where the auction auto-extends twice but no further bids come in. The supplier holding Rs 46,100 at close wins the order. The e-RA achieved a 4.9% saving over the initial sealed-bid L1.

Key rules and thresholds

On GeM, e-RA is triggered automatically for bids above Rs 5 lakh where three or more qualified sellers exist. The minimum decrement and auto-extension duration are set by the buyer before the event and are visible to all participants in the auction instructions. Sellers must have their EMD or bid security in place before joining the auction, and a bid once placed cannot be withdrawn or increased.