Our EPC approach
Engineering, Procurement, Construction: a six-step method and single-point responsibility, from the first study to handover.
Six steps, each with its deliverables
Each step ends with clear deliverables and a decision: proceed, adjust or stop. You stay in control of the project and its budget.
Feasibility and business case
We start from your objective and the site data to check that a project stands up — technically, administratively and financially — before significant costs are committed.
Sizing and engineering
The system is defined in detail: power, energy, electrical architecture, layout. Simulations account for battery ageing and real operating conditions.
Permitting and grid connection
We prepare the applications, submit them and follow up with the relevant bodies until decisions are issued.
Procurement
Equipment is specified and then selected on technical, economic and warranty criteria. We monitor manufacturing and carry out factory acceptance where relevant.
Construction and installation
We manage the site and coordinate the trades, keeping to schedule with constant attention to safety.
Commissioning and handover
The plant is tested, its performance measured and compared with the guaranteed values, then handed over with its complete documentation.
What is not up for negotiation
Safety
Fire protection concept, electrical safety and site safety addressed from the design stage.
Compliance
Applicable standards and regulations, and the requirements of the grid operator and authorities.
Measured performance
Capacity, efficiency and availability verified by testing and compared with guaranteed values.
Transparency
Assumptions, calculations and equipment choices documented and explained.
An asset built to last
A battery operates for fifteen years or more. We prepare for that phase from the design stage and can support you afterwards.
- Performance monitoring. Capacity, efficiency and availability indicators.
- Maintenance. Preventive maintenance plan and coordination of interventions.
- Warranty management. Follow-up of manufacturer warranties and performance commitments.
- Upgrades. Capacity augmentation and adaptation to new markets.
Stand-alone assignments
- Study only
- Feasibility, sizing or business case, with no commitment to what follows.
- Owner’s engineering
- Technical support for the owner or investor: specifications, bid analysis and supervision.
- Detailed engineering
- For a project that is already developed and permitted.
- Full EPC
- The whole scope, under single-point responsibility.
Frequently asked questions
What does an EPC contract for a BESS include?
Engineering (studies, drawings, diagrams, permit applications), procurement of all equipment (batteries, converters, transformers, switchgear, control systems) and construction through to commissioning and handover. The exact scope, interfaces and warranties are defined in the contract.
Can you take on just part of a project?
Yes. We also carry out stand-alone assignments: feasibility study, sizing, business case, grid connection application, owner's engineering or detailed engineering for an already-developed project.
How long does a BESS project take?
It depends mainly on two factors outside the construction site: grid connection and permitting lead times, and delivery times for the main equipment, particularly transformers and medium-voltage switchgear. Construction itself is comparatively quick. We draw up a realistic schedule from the feasibility stage.
How is the plant's performance verified?
Through commissioning tests: usable capacity, round-trip efficiency, power, response time and compliance with grid-operator requirements. Results are recorded in a test report and compared with the contractually guaranteed values.
Which step should you start with?
Tell us where your project stands and we will propose the right scope.