Ppa Litigation: How to Protect Revenue and Resolve Contract Disputes

The most common triggers of PPA litigation are offtaker curtailment beyond the contractually permitted level, pricing disputes arising from indexation mechanisms, and payment failures. Pricing indexation disputes arise when the parties disagree on whether a market reference price has been correctly calculated, whether a price cap or floor has been triggered, or whether a tariff adjustment entitles one party to a retroactive price adjustment. Parties involved in a curtailment or pricing dispute should consult energy and construction counsel immediately to assess available remedies and preserve their rights under the contract's notice provisions.

Force majeure clauses excuse a party from performance obligations that become impossible due to events beyond the party's reasonable control, such as natural disasters, extreme weather events, and grid emergencies. The interpretation of force majeure clauses is a frequent source of PPA litigation because parties disagree on whether the triggering event was within the affected party's control, whether reasonable mitigation steps were taken, and whether the event excuses performance or merely delays it. Parties facing a force majeure or change-in-law claim should consult breach of contract counsel to evaluate whether the claim is properly invoked, whether notice requirements have been satisfied, and what remedies are available.

A take-or-pay clause obligates the offtaker to pay for a minimum quantity of energy regardless of whether it takes delivery, providing the project with the revenue floor necessary to service debt. When an offtaker fails to satisfy its take-or-pay obligation, the seller's remedy is a claim for the contract price of the undelivered energy less amounts the seller saves by not generating the undelivered quantity, and courts have enforced take-or-pay provisions as written in the absence of a supervening defense. Courts have enforced take-or-pay provisions as written in the absence of a supervening defense. Sellers with a take-or-pay claim should immediately engage breach of contract suit counsel to quantify the damages, preserve evidence of availability and notice, and evaluate the most effective enforcement strategy.

Offtaker credit risk is one of the most significant risks in any long-term power purchase agreement because the seller's revenue depends entirely on the offtaker's financial capacity to make scheduled payments over a contract term extending 10 to 25 years. PPA litigation arising from offtaker payment default typically involves claims for the unpaid contract price, accrued interest, liquidated damages, and the costs of remarketing the offtaker's capacity. Project developers whose offtakers have defaulted should engage project finance counsel to evaluate whether available security can be drawn, whether the default triggers cross-default provisions in the project's financing documents, and how to preserve the project's revenue stream.

FERC exercises jurisdiction over wholesale electricity sales subject to the Federal Power Act, and PPAs involving interstate wholesale sales must comply with FERC's filing requirements. FERC's filed rate doctrine prohibits parties from enforcing contract rates that differ from filed tariff rates. A non-compliant PPA may be subject to retroactive rate adjustment. Parties to a power purchase agreement involving FERC-jurisdictional wholesale sales should engage energy regulatory counsel to assess whether the contract complies with applicable FERC requirements and how the filed rate doctrine affects disputed pricing terms.

Renewable portfolio standards (RPS) require electricity providers to procure a specified percentage of their retail electricity from eligible renewable sources, and long-term renewable energy PPAs are the primary mechanism utilities use to satisfy their RPS obligations. PPA disputes involving RPS compliance arise when the seller's project fails to produce sufficient renewable energy certificates (RECs) or fails to qualify as an eligible renewable resource under the applicable state RPS program. Parties affected by an RPS eligibility dispute should consult renewable energy counsel to evaluate whether the seller has breached any eligibility representations, how the contract allocates RPS compliance risk, and what remedies are available.

Arbitration is the preferred dispute resolution mechanism for international PPAs because it provides a neutral forum, offers greater confidentiality than court proceedings, and produces awards enforceable in multiple jurisdictions under the New York Convention. Domestic PPAs often include arbitration clauses specifying the administering organization, the number of arbitrators, the seat of the arbitration, and the governing law. Disputes over the scope of the arbitration clause, the arbitrability of regulatory disputes, and the availability of emergency relief are a frequent source of preliminary litigation. Parties seeking to compel arbitration or resisting an arbitration demand should engage arbitration counsel experienced in energy contract disputes to evaluate the enforceability of the arbitration clause and develop a procedural strategy.

Courts have generally enforced liquidated damages provisions when the amount is a reasonable pre-estimate of damages difficult to calculate at the time of breach, and refused to enforce them when the amount is a penalty with no reasonable relationship to actual damages. PPA termination provisions typically specify the circumstances under which either party may terminate for the other's default, the notice and cure periods required before termination, and the liquidated damages formula governing the defaulting party's financial obligation. Parties who have sent or received a termination notice should consult business dispute counsel to evaluate the enforceability of the termination and assess the damages calculation methodology.