Site Investigation Services

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 We specialise in comprehensive soil thermal resistivity and Conductivity analysis, a critical service for ensuring the safe and efficient installation of high voltage cables and earthing systems in substations and along cable routes. Proper evaluation of soil thermal properties is essential to determine the heat dissipation capacity of the soil surrounding the cables,minimising the risk of overheating and ensuring optimal cable performance and longevity. Furthermore, safe operation of the earthing systems in the substations is highly dependent on the resistivity of the soil. Our team utilizes advanced testing methods and state-of-the-art equipment to assess and model soil conditions, providing tailored recommendations to support your project's specific requirements. 

 We offer expert Ground Penetrating Radar (GPR) and topographic survey services tailored to the unique demands of substation projects. GPR surveys provide precise mapping of subsurface utilities, foundations, and potential obstructions, ensuring accurate planning and minimizing the risk of unforeseen issues during construction or maintenance. Complementing this, our topographic surveys deliver detailed surface mapping, capturing critical data on elevation, gradients, and site features to support optimal design and layout. Together, these services enable comprehensive site assessments, reducing project risks, ensuring compliance with regulatory standards, and streamlining project execution for safe and efficient substation development. 

 Our power quality measurement and harmonics analysis services are designed to ensure the reliability and efficiency of your electrical systems. Poor power quality and excessive harmonics can lead to equipment malfunctions, energy losses, and compliance issues with industry standards. Using advanced monitoring equipment, we assess key parameters such as voltage stability, harmonic distortion, and load imbalances, identifying potential issues before they escalate. Our detailed analysis helps clients implement effective mitigation strategies, such as harmonic filters and system optimization, ensuring the smooth operation of critical infrastructure and extending the lifespan of electrical equipment. 

 We provide expert grid connection services tailored to the UK's regulatory framework, including compliance with the NESO Grid Code and ENA G99 standards. From feasibility studies and applications to engineering design and compliance assessments, we ensure seamless integration into transmission and distribution networks. Our expertise spans renewable energy, battery storage, and hybrid systems, offering practical solutions that meet technical, regulatory, and commercial requirements. With a proven track record, we help clients navigate complexities, secure approvals, and achieve reliable, compliant connections. 

 We offer comprehensive regulatory support to transmission and distribution companies preparing for RIIO-T3 and RIIO-ED3 price control periods. Our expertise includes cost assessment, developing detailed Engineering Justification Papers, and crafting robust business plans that align with Ofgem's expectations. We provide strategic advice, stakeholder engagement support, and rigorous data analysis to ensure accurate submissions and effective communication of investment needs. With a proven track record, we help our clients optimize funding outcomes, meet performance targets, and navigate the complexities of the evolving energy regulatory landscape. 

 Nexgrid is a leading provider of technical due diligence services, specializing in complex infrastructure projects within the renewable energy sector. With expertise spanning structural design, electrical systems, cable integrity, operations and maintenance strategies, and regulatory compliance, Nexgrid ensures that critical assets meet industry standards and operate reliably. Our meticulous approach to risk identification, operational readiness, and stakeholder coordination equips clients with the confidence to advance large-scale projects, such as offshore wind farms, into successful operation.