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Castle Water is the UK’s most trusted water supplier, working with energy businesses of all kinds, from conventional generation and fuel refining to distributed renewables and battery storage. Our expert commercial water services help energy operators stay compliant, resilient, and cost-efficient across even the most demanding industrial environments.
Whether you manage a CHP plant, solar farm, depot network, or forecourt estate, we provide tailored water and wastewater services that match your operational footprint, helping you reduce waste, meet regulatory obligations, and cut unnecessary costs.
SUEZ Recycling and Recovery UK, a major player in sustainable waste and resource management, partnered with Castle Water to consolidate its water and wastewater services across more than 200 sites.
With a large, multi-site footprint and high-volume discharge, SUEZ faced the same challenges as many energy and fuel businesses – including managing trade effluent compliance, monitoring wastewater quality, and ensuring billing accuracy. Castle Water’s expertise in industrial wastewater and trade effluent helped deliver a smooth transition and long-term cost savings.
Castle Water provides end-to-end support for water use and wastewater management across the entire energy value chain. Whether you’re generating power, refining fuel, or maintaining grid resilience, we understand the critical role water plays in safety, efficiency, and environmental compliance.
Our sector-specific knowledge covers a wide range of technologies, infrastructure, and regulatory contexts — helping energy operators reduce risk, meet discharge requirements, and maintain uninterrupted operations across complex, high-demand sites.
Energy sites often involve high volumes of water use, complex infrastructure, and significant environmental risk. As a result, operators are subject to a wide range of regulatory obligations under legislation such as the Environmental Permitting Regulations (England and Wales), the Water Environment (Controlled Activities) Regulations (Scotland), and the Water Industry Act 1991. Governing bodies such as the Environment Agency, SEPA, and Natural Resources Wales oversee these rules, which cover everything from water abstraction to wastewater discharge.
Castle Water supports energy providers in meeting their legal responsibilities around trade effluent – helping ensure the safe and compliant discharge of cooling, cleaning, or process water. We also help manage surface water and runoff, particularly in environments where hydrocarbons, oils, or chemicals pose a pollution risk. Groundwater protection is a further priority, especially for facilities operating within Source Protection Zones or near sensitive watercourses.
Emergency planning is another critical area of compliance. From ensuring continuity of water supply to putting robust spill response procedures in place, we help organisations strengthen their operational resilience.
Whether you need support with abstraction licensing, discharge consent, trade effluent monitoring, or emergency supply planning, Castle Water’s expertise makes regulatory compliance simpler, safer, and more cost-effective.
We know the energy sector can’t afford disruption. That’s why our water services are designed to be robust, scalable, and cost-effective:
Explore expert insights into industrial water efficiency, regulatory updates, and innovations shaping water use in the UK energy industry.
Castle Water works with public and private energy providers, fuel suppliers, and infrastructure operators to deliver dependable water services that scale with your business. Our proven track record in industrial trade effluent, high-volume water supply, and multi-site management makes us the retailer of choice for essential industries.
Whether you’re powering communities or managing mission-critical systems, Castle Water helps keep your operations flowing smoothly.
We work with power stations, renewables providers, fuel distributors, standby energy operators, and more.
Yes – if you discharge process or cooling water to the sewer, consent is a legal requirement.
Absolutely. We specialise in consolidated billing and site-level usage data.
Through expert compliance advice, regular auditing, and support for spill prevention, runoff control, and wastewater treatment.
We can provide emergency water by tanker or bottle, fast, to keep your site running.
