Geothermal Equipment Operations and Maintenance

Star Energy provides full-scope operations and maintenance (O&M) services to support the long-term performance, safety, and regulatory compliance of geothermal systems. From deep borehole pumps to surface heat exchangers, every component within a geothermal scheme requires continuous oversight and periodic servicing to maintain its technical integrity and efficiency. Our O&M programme is designed to ensure the sustained delivery of thermal energy across diverse applications, from district heating networks to critical infrastructure facilities such as NHS hospitals and research campuses.

Geothermal assets represent a significant long-term investment. Once operational, they must perform reliably across decades of service. Even small variations in flow rate, pressure, or system responsiveness can lead to inefficiencies or unplanned downtime. Star Energy’s operations and maintenance services are structured to deliver full technical coverage of all mechanical, electrical, and control elements of a geothermal energy system, while ensuring each system continues to meet contractual heat obligations and legislative requirements.

Scope of Support

Our O&M framework covers both newly commissioned and legacy geothermal installations, regardless of original contractor. Where Star Energy delivers the geothermal plant as a turnkey solution, we provide ongoing support from day one of system operation, ensuring that knowledge transfer, warranty protection, and initial running-in procedures are all captured under the same service umbrella. Operational support spans all key system elements. This includes production and reinjection wells, submersible or line shaft pumps, thermal fluid networks, plate heat exchangers, pipework circuits, control panels, variable speed drives, and monitoring instrumentation. In cases where energy centres include integrated systems—such as thermal storage, peak-load boilers, or BMS interfaces—our O&M offer includes these as part of a single, coordinated service.

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Planned and Reactive Maintenance

Maintenance services are delivered in accordance with manufacturer specifications, component lifecycles, and site-specific operational risk assessments. Planned maintenance typically includes equipment inspections, lubrication, system flushes, recalibration of control devices, and diagnostic testing. Subsurface components, including pumps and sealing systems, are inspected and refurbished at predefined intervals to prevent premature failure or energy loss. Reactive maintenance is supported through a structured escalation process, beginning with system monitoring alerts and remote diagnostics. Our engineers are trained to resolve a wide range of faults, from blocked filters and pump cavitation to data acquisition anomalies or component fatigue. Where necessary, we deploy rapid-response engineering teams with mobile diagnostics and replacement parts to minimise system downtime.

 

System Monitoring and Diagnostics

All systems supported by Star Energy’s O&M service benefit from real-time data acquisition and system condition monitoring. Our digital infrastructure captures and analyses critical operating parameters, such as pressure differentials, inlet and outlet temperatures, flow rates, and electrical consumption. These are benchmarked against design performance to identify deviation trends. Advanced analytics allow for early detection of issues such as scale accumulation, air ingress, or pump wear. Operators receive automated performance summaries and exception alerts, allowing decisions to be made proactively rather than reactively. In installations where regulatory compliance depends on data accuracy—such as public sector buildings or systems receiving financial support under the Green Heat Network Fund—our monitoring systems offer a fully traceable, auditable digital record.

Compliance, Safety, and Documentation

All operations and maintenance tasks are delivered under a documented quality management system aligned with ISO standards. We maintain digital logs of all service interventions, compliance testing, calibration reports, and inspection outcomes. These records form the basis for client reporting and can be shared with third-party auditors, insurance bodies, or regulatory agencies as required. Our engineering teams operate under strict HSE protocols, with full training in confined space entry, high-pressure equipment handling, and electrical safety. Where sites require additional procedures—such as hot works permits, access control, or lone working policies—we provide appropriate certification and compliance processes.

For subsurface equipment, including geothermal wells, we conduct periodic well integrity reviews to assess casing conditions, annular pressure profiles, and pump alignment. These checks are essential to ensuring environmental compliance, particularly when reinjection is used.

Performance Optimisation and Technical Reviews

Ongoing operational support includes annual or seasonal performance reviews. These are technical evaluations that assess system efficiency, thermal output consistency, control system responsiveness, and energy balance across the geothermal plant. Where gaps are identified between actual and design performance, we propose corrective measures such as pump control optimisation, flow balancing, or component upgrades.

Many geothermal systems operate under long-term heat supply agreements with guaranteed delivery targets. Star Energy’s operational support helps clients stay within performance thresholds and avoid penalties under performance-linked contracts. Where required, we provide performance certificates and efficiency reports to demonstrate compliance.

Lifecycle Management

Geothermal energy systems are long-life assets, with major components designed for operational durations of 20 to 40 years. Over this period, careful lifecycle management is essential to avoid unexpected capital outlay or asset devaluation. Star Energy works with clients to create forward-looking asset replacement plans that align with financial planning cycles. Lifecycle services include predictive maintenance forecasts, end-of-life component assessments, supply chain planning, and support in procurement of major plant items. Our in-house team provides guidance on when to refurbish, replace, or upgrade equipment to maintain high thermal performance and energy efficiency.

 

Remote and On-Site Services

Depending on client needs and system configuration, our operations and maintenance services are delivered through a combination of remote monitoring and on-site engineering. For systems integrated with SCADA or BMS infrastructure, we offer live dashboarding and alarm management, with remote login capabilities for diagnostics.

On-site services are scheduled according to site accessibility, criticality, and maintenance cycles. Where systems are located within NHS facilities, education campuses, or residential zones, our teams work within designated windows to minimise disruption and ensure full coordination with site stakeholders.

Customised Service Agreements

O&M service agreements are tailored to each client’s operational priorities and technical environment. We offer full-service packages with defined response times and performance guarantees, as well as hybrid arrangements where in-house teams handle routine inspections while Star Energy provides specialist support. Each contract is supported by clear KPIs and a service plan that outlines site responsibilities, reporting frequency, spare parts strategy, and escalation processes. These agreements are reviewed annually to ensure they remain aligned with system maturity, site changes, and energy delivery requirements.

Integration with Wider Star Energy Services

Operations and maintenance is a critical part of the geothermal project lifecycle and forms a natural continuation of our feasibility, design, drilling, and installation services.

When Star Energy delivers a full turnkey geothermal solution, the transition into operational phase is seamless, with no handover delays or technical uncertainty. We also offer technical support to third-party geothermal installations that require improved system stability, efficiency gains, or a structured operations approach. Our experience in operating deep geothermal systems under UK regulatory frameworks makes us a reliable partner for organisations managing large, high-value heat assets.

Geothermal systems are engineered for longevity, but their success depends on consistent and informed operational management. At Star Energy, our operations and maintenance services are built on detailed technical knowledge, real-time system oversight, and proven field experience. We help our clients maintain performance, protect investment value, and ensure continuous, safe delivery of geothermal energy through structured, data-led operations and responsive engineering support.

Whether for new or existing systems, our approach to operations and maintenance is focused on transparency, reliability, and lifecycle value—backed by the UK’s leading geothermal project delivery expertise.

A depth of knowledge & experience in the Geothermal arena gives us the edge over competitors

Ross Glover, Chief Executive

Our strategy is to create value for shareholders, employees and communities by being a leading operator of oil and gas assets, renowned for operational excellence and strong safety standards.

Ross Glover, Chief Executive

Geothermal energy is an ideal solution to the urban deployment of renewable energy, geothermal energy.

Ross Glover, Chief Executive

Our Projects - Geothermal

Manchester University NHS Foundation Trust

The Carbon Energy Fund released a tender to select Innovation Partners to work with NHS Trusts across the UK to identify Low Carbon Heat opportunities. We were selected as preferred Partner by the CEF and Manchester University NHS Foundation Trust for the Wythenshawe Hospital.

Manchester Therme Group

Feasibility work for an innovative geothermal geo-exchange solution for the Therme Wellbeing Resort in Trafford Park, Manchester. A trial borehole was drilled and thermal response testing carried out to determine the potential capacity for heat and cooling supplies to the development. This work identified that the Trafford Park area has amongst the highest capacity in the country.

Salisbury NHS Foundation Trust

The Carbon Energy Fund released a tender to select Innovation Partners to work with NHS Trusts across the UK to identify Low Carbon Heat opportunities. We were selected as preferred Partner by the CEF and Salisbury NHS Foundation Trust for the Salisbury Hospital.

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