Key infrastructure for a Hydro Electricity Project in Northumberland

Scope of Works
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• Headwalls Construction: Built large in-situ reinforced concrete headwalls for water intake and discharge. These were designed to handle high retained loads and constructed with precision shuttering and steel fixing techniques.
• Excavation & Concrete Installation: Executed controlled excavation along the riverbank, using cofferdams and erosion control to maintain bank stability and protect the watercourse.
• Pipelaying: Installed critical pipework connecting the inlet and outlet structures, ensuring efficient water flow with minimal environmental disturbance.
• Plant Room & Welfare Building: Constructed a stone-clad plant room and welfare facility with a timber roof, designed to blend into the local environment. Specialised foundations were used to safeguard the riverbank.
• Inlet Building & Sluice Gate: Delivered additional water control infrastructure to regulate flow and support energy generation.

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Challenges and Solutions
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• Environmentally Protected Site (SSSI): The site’s classification as a Site of Special Scientific Interest required strict compliance with environmental regulations. G&B coordinated closely with environmental consultants and local authorities, using silt fences, sediment traps and minimal excavation zones to protect sensitive habitats.
• Working Near Water: Proximity to the River introduced risks of flooding and pollution. Temporary cofferdams were used for dry working zones, while all materials were selected to perform in wet conditions. Spill kits and water-safe construction practices were standard throughout.
• Logistics & Accessibility: The rural location and restricted site access required careful transport planning. Deliveries were timed to avoid wildlife disruption and routes were coordinated with local authorities to limit community impact.

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Outcome

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The project was completed on time and within budget in February 2025. All structures were delivered to spec, fully compliant with environmental and safety standards. The hydroelectric facility now operates reliably, contributing to sustainable energy in the region. The client praised G&B for managing a complex, high-risk build in a sensitive area without compromise on quality or environmental integrity.
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Collaborations
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G&B Civil Engineering worked alongside environmental consultants, local planning authorities and specialist subcontractors. Strong communication and coordination ensured smooth delivery and regulatory compliance throughout the build.

In addition, and to utilise the time which is allocated to the retainer quotation, would it be possible to make some amendments to the current website? We have a new starter and also a new service of 'Minor Works' which we are trying to publicise so there are a few updates which we require.