What is an EPC contract?
Contents |
[edit] Introduction
An engineering, procurement and construction (EPC) contract is sometimes referred to as a turnkey contract, although there are some differences between the two.
- In an EPC contract, the project company will do some basic engineering before handing over the project to the contractor. In a turnkey contract, the owner would specify certain technical aspects of the project, and then the turnkey contractor will have all the project controls until the contract is complete.
- A turnkey contractor is responsible for the design, procurement and construction of the project. The contractor is also responsible for commissioning and handing over the ready-to-use project to the owner or the client. In EPC, the commissioning is not a part of the contract as in a turnkey contract.
[edit] Engineering or designing aspects of an EPC contract
The design duties of EPC contractors are:
- Basic engineering.
- Detailed engineering.
- Detailed design.
- Planning.
- Construction engineering.
- Civil engineering.
[edit] Procurement aspects of an EPC contract
The responsibilities in procurement are:
- Logistics.
- Transportation.
- Purchasing.
- Invoicing.
- Receiving the materials.
[edit] Construction aspects of an EPC contract
The functions involved in the construction of a project are:
- An EPC contractor handles the design and construction management.
- Electrical installation.
- Water supply.
- Sanitation and drainage work.
- Carving cupboards and showcases.
[edit] Advantages of an EPC contract
By choosing an EPC contractor, the project owner may have several advantages, including:
- Single point of responsibility.
- Fixed contract price
- Fixed completion date
- Set performance specification.
- Performance guarantees.
- Security.
- Caps on liability.
- Rights to suspend the project.
- Flexibility in ordering variations.
- Force majeure
[edit] Limitations of an EPC contract
Like any other contract, an EPC contract also has some limitations. These include:
[edit] Difference between EPC and EPCM contracts
The definition of EPCM is engineering, procurement, construction and management. Although it sounds similar to an EPC project, an EPCM contract is very different from the former. An EPC contractor handles design, procurement, construction and hands over the project to the end-user. By comparison, the EPCM contractor is mainly concerned with the supervision of the project, although an EPCM contractor is also responsible for the detailed design and the overall project management.
See also: Engineering procurement and construction contract.
[edit] Related articles on Designing Buildings
Featured articles and news
What they are, how they work and why they are popular in many countries.
Plastic, recycling and its symbol
Student competition winning, M.C.Esher inspired Möbius strip design symbolising continuity within a finite entity.
Do you take the lead in a circular construction economy?
Help us develop and expand this wiki as a resource for academia and industry alike.
Warm Homes Plan Workforce Taskforce
Risks of undermining UK’s energy transition due to lack of electrotechnical industry representation, says ECA.
Cost Optimal Domestic Electrification CODE
Modelling retrofits only on costs that directly impact the consumer: upfront cost of equipment, energy costs and maintenance costs.
The Warm Homes Plan details released
What's new and what is not, with industry reactions.
Could AI and VR cause an increase the value of heritage?
The Orange book: 2026 Amendment 4 to BS 7671:2018
ECA welcomes IET and BSI content sign off.
How neural technologies could transform the design future
Enhancing legacy parametric engines, offering novel ways to explore solutions and generate geometry.
Key AI related terms to be aware of
With explanations from the UK government and other bodies.
From QS to further education teacher
Applying real world skills with the next generation.
A guide on how children can use LEGO to mirror real engineering processes.
Data infrastructure for next-generation materials science
Research Data Express to automate data processing and create AI-ready datasets for materials research.
Wired for the Future with ECA; powering skills and progress
ECA South Wales Business Day 2025, a day to remember.
AI for the conservation professional
A level of sophistication previously reserved for science fiction.
Biomass harvested in cycles of less than ten years.
An interview with the new CIAT President
Usman Yaqub BSc (Hons) PCIAT MFPWS.
Cost benefit model report of building safety regime in Wales
Proposed policy option costs for design and construction stage of the new building safety regime in Wales.
Do you receive our free biweekly newsletter?
If not you can sign up to receive it in your mailbox here.

























