Liquidated Damages in a Solar EPC: Delay LD, Performance LD and Realistic Caps

Liquidated damages in a solar EPC are pre-agreed sums the contractor pays for late completion (delay LD) or for a plant that generates less than guaranteed (performance LD). Each should have a clear trigger, a rate, a cap and a stated list of excusable events. Indian public-works practice caps delay LD at 10% of contract value, and private contracts usually negotiate within that benchmark.

What are delay LD and performance LD, side by side?

They protect against different losses and should never be blended into one clause. Delay LD compensates the owner for the generation and savings lost while the plant is not commissioned. Performance LD compensates for a plant that was commissioned on time but does not deliver the guaranteed output.

What does the Indian public-works benchmark say about delay LD?

The Department of Expenditure's Manual for Procurement of Works (updated June 2022) says that for delay in completing works, LD of half a percent of contract value per week of delay, subject to a maximum of ten percent of contract value, should be levied, with a higher weekly rate of one percent for repair works costing up to ten lakh rupees. It also says every contract should provide for recovery of LD for delay. For engineer-procure-construct contracts the Manual describes LD for each day of delay beyond the specified date, with total damages not exceeding ten percent of the contract price, and records that the contractor is entitled to extension of time for change of scope, force majeure and delays caused by or attributable to the owner.

The Manual is written for government purchasers. A private factory owner is not bound by it, but it is the benchmark that most lenders, consultants and EPC contractors know, so it is the natural starting point for negotiation. Expect the contractor to ask for a lower combined cap, a grace period before LD starts, and LD as the sole remedy for delay. All three are common asks; none is a rule.

How should performance LD be written?

Performance LD is where solar contracts differ most. The Manual says that EPC contracts should carry performance parameters and liquidated damages for shortfall in performance. For a solar plant that means defining, in the contract, four things.

1. The guaranteed metric. Performance ratio, specific yield or capacity utilisation factor, defined by formula, so it does not depend on a loose phrase. Our note on performance ratio guarantees explains how to define and test it.
2. The test protocol. Which meters and sensors, how they are calibrated, how irradiance is corrected, what period the test covers and who witnesses it.
3. The remedy sequence. Rectification period first, then LD, then a cap. Contractors accept this because it rewards fixing the plant, and owners accept it because the plant is what they actually want.
4. The exclusions. Grid unavailability, owner-side shading, curtailment and soiling beyond an agreed cleaning schedule are normally outside the contractor's control.

No regulator prescribes a performance LD rate for private C&I solar, so the rate and cap are a commercial negotiation. Do not accept a performance guarantee without a stated way of measuring it.

What do EPC contractors push back on?

• Owner-side and authority delays. The Manual itself places the risk of delays in approvals from local authorities on the owner. In solar, DISCOM feasibility, net-metering approval and the Electrical Inspector's approval are the usual causes. Agree which approvals are on whose critical path, and whether the contractor's LD clock stops while an approval is pending.
• Global caps. Contractors often want one cap on all liabilities, including LD, warranty and indemnity. Owners should ask that delay and performance LD each have their own cap, so a delay does not use up performance protection.
• Consequential loss. LD should be the owner's compensation for the delay or shortfall; exclusion of other consequential loss is a fair swap.
• Change in law. See the next section, because a policy date can sit inside your schedule.

How does a policy date change the delay clause?

MNRE's Office Memorandum of 4 August 2026 says net-metering and open-access projects commissioned by 31 December 2026 are exempt from ALMM List-II (solar cells); later commissioning requires compliance. The exemption does not cover List-I modules. A plant that was ordered with non-List-II cells and slips past that date because of a contractor delay is a real dispute in waiting. Decide in the contract whether that slip is the contractor's cost, and make the long-stop date explicit. The ministry's text is in the O.M. of 4 August 2026, and our ALMM List-II commissioning guide explains the effect.

How do you make LD enforceable?

Section 74 of the Indian Contract Act, 1872 lets the party complaining of a breach receive reasonable compensation, not exceeding the sum named in the contract, whether or not actual damage or loss is proved. In practice courts look at whether the sum named is a genuine estimate of loss. Three drafting habits help.

• Record how the rate was derived, for example from the daily generation and tariff value of the plant. The note shows the rate is a pre-estimate of loss, not a penalty.
• Fix the dates unambiguously: contract date, milestone dates and a defined completion test. Disputes are mostly about when the clock started.
• Give the owner a practical way to recover: set-off against running bills and a performance security. The Manual describes performance security as usually five percent and retention as usually five percent of each running bill; your commercial terms may differ.

Also keep a contemporaneous record of delay events, notices and extension requests. Our guide to the 15 clauses of a solar EPC agreement places LD among the other terms that decide who pays, and the project delay cost calculator helps you estimate what a week of delay costs you so the LD rate is not guessed.

How Secured Engineers helps

Secured Engineers designs solar plants in-house and files DISCOM net-metering and CEIG applications in-house, which keeps the approval risks that drive delay inside one team. Solar and MEPF can be delivered under one contract. We work from offices in Noida (Delhi NCR) and Ludhiana, and have delivered 535+ projects across 18+ states with 89.77% repeat clients. Our published C&I solar band is ₹24,000–32,000 per kW excluding GST, and the contract terms, including LD, are stated in the proposal.

If you are comparing EPC offers, send us the draft schedule and performance clauses and we will tell you where they are vague. See our solar EPC service, then message us on WhatsApp, call +91 70099 85817 or ask for a free proposal with the schedule and LD terms set out.