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NHS healthcare estate · Carmarthen

Parc Dewi Sant — NHS healthcare campus solar, Carmarthen

Commercial rooftop solar PV across the main campus building at Parc Dewi Sant: scaffold-coordinated panel installation on pitched tiled roofs, structural load verification, NGED G99 connection coordinated with live clinical operations, inverter commissioning and monitoring set up for the Hywel Dda estates team.

Client
Hywel Dda University Health Board
Location
Carmarthen
Project value
approximately £120,000
Completed
April 2026
System size
120 kWp
Annual generation
115,800 kWh
Annual saving
£29,000
Payback period
3.4 years
Parc Dewi Sant hospital main entrance with installed rooftop solar and scaffolded second phase, Carmarthen

Parc Dewi Sant main entrance (Prif Fynedfa) with completed solar array and scaffolded second-phase works

Parc Dewi Sant roof solar panel installation in progress

Panel installation in progress on main campus roof section

Solar panels installed across pitched tiled roof at Parc Dewi Sant

Completed array across south-facing pitched roof

Solar array integrated with existing roof features at Parc Dewi Sant hospital

Layout coordinated around existing roof plant, flues and walkways

Close-up of tier-1 solar panels and mounting rail at Parc Dewi Sant

Panel and mounting rail detail

Wider view of completed solar PV installation at Parc Dewi Sant NHS site, Carmarthen

Completed installation across the Parc Dewi Sant campus

Parc Dewi Sant site walkthrough — April 2026
The challenge

The challenge

Parc Dewi Sant is a working NHS campus under Hywel Dda UHB operating continuous clinical, administrative and community-health functions. Two realities made this a harder install than a plain commercial rooftop. First, the building envelope combines multiple pitched tiled roof sections at varying angles around a central entrance — so panel layout had to be designed roof-plane by roof-plane, not as a single bulk array. Second, scaffold access had to be coordinated carefully against live main entrance footfall, ambulance bay operations and Welsh-language patient signage (the site is bilingual, with Prif Fynedfa / Main Entrance signage throughout).

Our solution

Our solution

FLD carried out a staged structural assessment across every roof section the scheme touched, confirming load capacity before any scaffold went up. Panel layout was designed to maximise south-facing yield while working around the cross-gabled roof geometry and existing flagpoles, signage and CCTV masts. Scaffold was erected in phased sequences coordinated with the Hywel Dda estates team and the main entrance operations schedule, keeping the Prif Fynedfa entry fully operational throughout. A G99 Type A connection was submitted to NGED ahead of panel delivery so the network approval and installation timelines ran in parallel rather than in series. On commissioning, the inverter and monitoring were configured for the Hywel Dda estates portal so the UHB energy officer has direct live generation data alongside their existing BMS and meter data.

The result

The result

Installation completed with the main entrance continuously operational — no clinical or visitor access disruption. Year-one generation tracking above the PVGIS model. The monitoring output is already feeding into Hywel Dda's estate carbon reporting against NHS Wales decarbonisation targets, and FLD is in discussion with the board on a follow-on scope for additional Hywel Dda campuses.

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