EPC Delays in Energy Projects: Design Responsibility and Regulatory Delay

Energy projects often fail to meet planned completion dates for reasons that cross the boundaries between engineering, public permissions and contractual administration. A delay caused by a design change may affect grid connection, equipment delivery and commissioning. Responsibility cannot be established from the revised completion date alone.

Design responsibility begins with the contract

An EPC contractor may accept broad design responsibility, while the employer retains duties to supply data, approve drawings or obtain specified consents. The exact allocation depends on the executed agreement and technical schedules. A change requested by the employer is not automatically a variation if it merely corrects a contractor design defect. Conversely, rejecting a compliant submission or introducing additional performance requirements may entitle the contractor to relief. The chronological record should establish which design was approved, what changed, who directed the change and how it affected activities on the critical path.

Regulatory delay may be allocated in different ways

Permits, environmental approvals, grid studies, right-of-way clearances and government permissions are often treated as a single category in commercial summaries. Contractually they may be divided between the employer and contractor, with different consequences for delay and cost. The party responsible for obtaining a permit may still be entitled to relief where the delay results from a defined change in law or an authority acting in circumstances contemplated by the contract. These issues must be analysed against notice obligations and the applicable risk clauses. A broad claim that all public delay is force majeure is rarely an adequate legal analysis.

Programme evidence must address concurrency

The contractor may rely on a regulatory hold while the employer points to late equipment procurement during the same period. Establishing causation requires reliable baseline and updated programmes, critical-path analysis and evidence about which activities could have progressed. A delay to a non-critical activity may not affect the contractual completion date. Equally, the fact that some work remained available does not necessarily show that a delayed approval had no effect. The analysis should distinguish entitlement to additional time from entitlement to prolongation costs, because concurrent delay may affect the two remedies differently.

Commissioning and payment are linked

Many power and industrial projects tie payment or revenue commencement to tests, synchronization, availability or a commercial operation date. A dispute over who caused delay can therefore create arguments about liquidated damages, performance security, financing costs and lost revenue. The parties should preserve commissioning records and communications with grid or regulatory bodies. If a delay event changes the financing or offtake timetable, contract administration should consider the affected documents, not merely the EPC schedule. The legal position needs to be consistent across the project agreements.

Allocate the critical delay, not the blame

Energy delay claims require a combined reading of design obligations, approvals, programmes and financial consequences. The record should identify each obstructed activity and the contractual event producing it. A coherent claim or defence emerges from that sequence, not from attributing the entire overrun to one convenient cause.