Mobilising a Time-Critical Open Loop Geothermal Scheme for an NHS Estate

This project is being mobilised for an NHS Trust in Southeast London, where an open loop geothermal system is being developed to support estate decarbonisation.

For NHS estates, decarbonisation projects like this sit at the intersection of operational pressure, public accountability and fixed funding timelines.  Solutions need to be viable, deliverable and clearly understood - not just in design, but in how they will be installed and managed within a live healthcare environment.

Drift was brought into a project on an NHS estate in London at a critical stage.  The scheme had previously been awarded to another contractor, but concerns around planning, communication and design led the Trust to retender.  That decision created immediate time pressure, with funding deadlines already in place.

The priority was to stabilise the project and move it forward with clarity.  Working alongside the Trust, its consultants and the Principal Contractor, Drift helped redefine the requirements for Phase 1.  This includes the installation of one abstraction and one reinjection borehole, supported by two shallow monitoring wells.  The objective from this phase is to confirm aquifer performance and establish a clear basis for Phase 2, which could involve a significantly larger production system.

The challenge here is not just technical - it’s programme and coordination.  Design, planning and mobilisation have been progressed in parallel to meet funding timelines, ensuring the scheme remains viable within its constraints.

The site itself introduces additional complexity.  Located adjacent to a public park, the works require careful management of public access, stakeholder engagement and local impact.  This has already included public meetings to address concerns, coordination with local users, and plans to work closely with nearby businesses, including a café within the park.

Traffic management and site operations are being structured to minimise disruption while maintaining safe and efficient delivery.

As with many NHS-led schemes, the project also sits within a framework of funding, governance and accountability.  That requires a level of communication and control that goes beyond standard delivery - ensuring that all parties remain aligned as the project progresses.

Drilling has now commenced, and the focus is on generating the data needed to confirm viability.  If Phase 1 performs as expected, Phase 2 will expand the system significantly, forming a core part of the Trust’s strategy to move away from gas-based heating.

What this project demonstrates is Drift’s ability to step into a live scheme, restore confidence, and move quickly from uncertainty to structured delivery while managing public interface, funding constraints and technical requirements at the same time.

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