Our expertise

Energy Infrastructure Construction Services

ACS Construction delivers the civil, structural and utility works behind substations, grid connections and energy distribution assets across the UK.

20+ Years

Experience

Full-service

Design & Build

Fully Accredited

Trusted by Leading

Energy Companies

Powering critical energy infrastructure.

Civil Engineering Services For Energy Infrastructure Projects

ACS delivers the reinforced civil engineering works that are engineered to house transformers, switchgear and control systems securely in live energy environments. Our teams construct concrete bases, transformer bunds, control buildings and retaining structures, built to specifications and compliance standards.

We work across both primary and secondary substations, coordinating with developers, utilities and grid operators to meet project and safety requirements. With experience in high-voltage environments, we sequence and deliver works to minimise disruption while providing the robust foundations and structures needed to house critical electrical equipment.

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Just a quick note to say thanks for the great performance thus far on the project. I am fortunate to have the scope to be able to visit site on a regular basis and I must say it’s a pleasure to see consistent productivity from your various site teams across the job. The excellent progress achieved by ACS will now enable our mechanical contractor to mobilise a peak workforce in October working across all work pack areas on the West of Gowy on behalf of the Essar construction team please pass on our thanks to the ACS workforce.

ACS Construction Group Ltd played a pivotal role in the successful execution of the civil and construction works on the Eye Synchronous Condenser project.

ACS’s proactive approach, rigorous quality management, and collaborative spirit ensured successful delivery of a complex, high-value facility in a challenging environment — reinforcing a strong working relationship with British Salt.

The Hinkley Connection Project is a new 57 km high-voltage electricity line that will connect six million homes and businesses to new sources of low carbon energy. It will help the UK to meet ambitious targets to achieve net zero by 2050. The Sandford substation – one of 300 substations throughout England and Wales - is at the heart of the project.

Delivering Infrastructure for Grid and Utility Connections

We deliver the civil engineering works that allow energy projects to connect into the grid. Our scope includes constructing cable trenches, ducting runs, jointing bays and switchgear housings, all built to utility specifications and programme requirements.

These works are sequenced around high-voltage environments and planned outage windows, with our teams coordinating closely with network operators and electrical contractors. By managing the civils interface across stakeholders, we keep programmes controlled and give utilities the infrastructure needed to commission new assets safely.

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Delivering Infrastructure for Grid and Utility Connections

Making Complex Energy Sites Buildable with Enabling Works

Before any substation or energy facility can be constructed, the site must be engineered for delivery. ACS provides enabling packages that cover bulk earthworks, access roads, drainage systems and temporary works, tailored to the conditions of each site.

Our teams plan and sequence these activities to create safe logistics routes for heavy plant and equipment while protecting surrounding environments. Enabling works are programmed to support follow-on trades, ensuring foundations, civils and utilities can be installed without delay. By preparing difficult or greenfield sites to this level, we reduce risk during construction and provide long-term stability for operational use.

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Making Complex Energy Sites Buildable with Enabling Works

Why Choose ACS Construction For Your Energy Project Requirements

ACS has proven experience delivering civil engineering works for substations, grid connections and complex energy sites. Our teams operate confidently in high-voltage and tightly regulated environments, where safety, sequencing and compliance are critical. We manage the civils interface between utilities, contractors and developers to keep programmes controlled and projects moving.

Clients choose ACS for:

Delivery across renewable, utility and network operator projects
Civil engineering teams experienced in high-voltage environments
Rigorous planning of logistics, sequencing and access
Direct leadership and coordination with multiple stakeholders
Compliance-focused delivery aligned with utility standards

We take responsibility from pre-construction through to handover, identifying risks early, sequencing works carefully and delivering the civils packages that take energy sites from pre-construction through commissioning into operation.