A carbon credit offtake agreement is a multi-year contract to buy credits that do not exist yet, at terms fixed today. It is how the largest buyers in the market, from Microsoft to the Frontier buyers group, secure supply for net zero targets a decade out, and it is structurally different from buying issued credits on the spot market. This tutorial explains how a typical offtake is built, shows verified terms from published deals, compares offtake and spot procurement operationally, and isolates the clauses that decide who carries the risk when a project under-delivers or a methodology changes.

How a Typical Offtake Is Structured

The most useful public reference is the offtake agreement template published by Frontier in August 2024, refined over seven deals and more than $300 million contracted. Frontier uses a take-and-pay structure with a fixed price and a fixed volume: the buyer pays only for tons actually delivered, but must pay for every conforming ton delivered. Alternative structures exist, including hell-or-high-water contracts and contracts for difference, but take-and-pay dominates early-stage removal deals because it keeps budgeting simple for buyers and revenue predictable for lenders.

The contract maps to the project build timeline. The Effective Date is signing day. Between signing and the Commencement Date, the supplier must clear a list of Conditions Precedent, buyer-approved items such as an approved measurement protocol, a credit issuer, site permits or technical milestones. Once all conditions are met, the Commencement Date triggers the buyer’s firm obligation to pay for delivered units. Project financiers typically take their final investment decision only after this point, which is why a signed offtake is described as bankable. If a facility must be built, a Commercial Operation Date marks when construction is complete and delivery can start.

Delivery itself is precisely defined, and this matters more than most buyers expect. A unit counts as delivered only when the supplier certifies the removal is complete and the credit issuer has issued the credits on a registry. Payment is triggered at delivery, not at removal. Frontier offtakes are paid on delivery, with each payout contingent on every ton meeting its performance criteria, so there is no deposit at risk in this structure. In other deals, upfront payments are common: CORE Markets lists advance payments as a standard tool to get capital-intensive projects built, often in exchange for buyer input into project attributes.

Verified Deal Terms: What the Market Actually Signs

Published announcements give a rare look at real numbers. Frontier’s first offtake, with Charm Industrial in May 2023, committed buyers to $53 million for 112,000 tons delivered between 2024 and 2030. The striking detail is the price schedule: the price per ton declines by at least 37 percent over the contract term, and by as much as 75 percent if Charm hits its scaling plans and government incentives expand. Early offtake buyers are not getting a discount against future spot prices; they are locking in today’s high cost curve and accepting a pre-agreed glide path downward.

Frontier’s deal with Vaulted Deep, announced in May 2024, committed $58.3 million for 152,480 tons between 2024 and 2027, an implied average near $382 per ton, with options for buyers to purchase tons from future projects at lower prices. Frontier’s Stockholm Exergi agreement committed $48.6 million for removal output between 2028 and 2030, with the exact volume and price left pending the outcome of a Swedish government reverse auction at the time of announcement. At the top of the size curve, Microsoft and Stockholm Exergi extended their ten-year BECCS agreement in 2025 from 3.33 million to 5.08 million tonnes, roughly 500,000 tonnes per year, which Stockholm Exergi describes as the world’s largest permanent removal agreement on a yearly basis.

Offtake vs Spot: The Operational Trade-Off

Spot buying means purchasing issued, serialized credits for immediate retirement, with prices visible on exchanges and brokers and zero delivery risk. An offtake buys future, unverified tons from a specific project. CORE Markets frames the duration ladder clearly: spot purchases cover immediate needs, forward contracts run three to five years, and offtake agreements typically run ten to fifteen years. The trade is certainty of supply and price against delivery and technology risk.

Pricing mechanics differ too. Spot prices float with the market. Offtake prices can be fixed, as in the Frontier template, or structured with price collars, a floor that protects the developer and a ceiling that protects the buyer, or indexed to an external benchmark. CORE Markets notes that buyers do not need to contract 100 percent of their requirement forward; its most risk-averse suggested hedge is 50 percent of needs through an offtake and 50 percent on the spot market as required.

The Clauses That Decide Who Carries the Risk

Two non-obvious points emerge from Frontier’s published template. First, methodology change is explicitly handled and explicitly not repriced. The measurement protocol can be updated during the term, by the supplier, the buyer or the credit issuer, but the agreement states that price and quantity will not be adjusted as a result of a protocol change. In a market where standards revise quantification rules regularly, that single line decides whether the buyer or the seller absorbs methodology drift.

Second, delivery failure carries no liquidated damages in the Frontier structure. The supplier may under-deliver proportionally across buyers as long as it exceeds a Minimum Quantity, a percent of total contract volume, by a set year. Below that threshold the buyer can terminate, but cannot claim damages. Frontier deliberately excludes liquidated damages, security requirements and guaranteed volumes, arguing that punitive terms would make first-of-a-kind projects unfinanceable. Buyer termination rights are narrow: mutual consent, missed Commencement or Commercial Operation dates, failure to deliver the Minimum Quantity, change of control to a restricted party, material breach or insolvency. That narrowness is the price of bankability.

The buyer’s compensation for taking early risk is the right of first offer: priority access to excess tons from the project and to future projects from the same supplier, at supplier-proposed prices. Combined with the declining price schedules seen in the Charm deal, this is how early buyers are paid for funding the learning curve.

How to Structure Your Own Multi-Year Purchase

  • Define the claim period first. Match delivery years to your target year and residual emissions forecast, as covered in our guide to carbon credit vintage rules.
  • Split the book. A 50/50 offtake-to-spot hedge, as suggested by CORE Markets, caps delivery risk while preserving flexibility if your emissions fall faster than planned.
  • Negotiate the Conditions Precedent list hard. It is your main visibility into project development and your cleanest exit if the project drifts.
  • Decide the methodology clause explicitly. Follow the Frontier template and state whether protocol changes reprice the deal or not; silence here is a dispute waiting to happen.
  • Price the risk transfer, not just the ton. Narrow termination rights and no-damage clauses are concessions; they should show up in the price or in ROFO rights.
  • Stress-test the counterparty. As of August 2026, most removal suppliers are young companies; change-of-control and insolvency clauses are not boilerplate, they are your main protection.

What This Means for Buyers

Spot procurement optimizes for flexibility and price discovery; offtake procurement optimizes for supply security and price certainty over a decade. The published deal curve shows buyers accepting prices far above spot avoidance credits in exchange for durable tons and future access. The contract details, not the headline volume, determine whether that premium buys resilience or just risk.