The challenge
Parc Dewi Sant is set in the Carmarthenshire countryside and sits within a Conservation Area with Listed Building status. Two realities made this a harder install than a plain commercial rooftop. First, the planning context required careful aesthetic and heritage coordination — panel colour, roof-plane alignment and visual impact from the surrounding landscape all had to be documented. Second, the NHS campus operates continuous clinical, administrative and community-health functions, so scaffold access had to be coordinated against live main entrance footfall, ambulance bay operations and the bilingual Welsh-language Prif Fynedfa signage.
Our solution
FLD led the planning and heritage coordination alongside the structural assessment, confirming load capacity and aesthetic fit before any scaffold went up. Longi Solar panels were specified for their efficiency and low-reflectivity finish suited to the conservation setting. Panel layout was designed roof-plane by roof-plane to follow the cross-gabled geometry. SolarEdge inverter technologies were installed with per-module optimisation so localised shading from chimneys and parapet detail did not drag the wider array. A G99 connection was submitted to NGED ahead of panel delivery so network approval and installation ran in parallel. On commissioning, monitoring was configured for the Hywel Dda estates portal so the UHB energy officer has live generation data alongside existing BMS and meter data.
The result
Since going online in 2022 the system has produced 477 MWh of clean energy and contributed 253,869 kg of CO2 reduction. Lifetime ROI approximately £1 million against a £252,750 capex. The monitoring output is feeding into Hywel Dda's estate carbon reporting against NHS Wales decarbonisation targets, and FLD is in discussion with the board on follow-on scope for additional Hywel Dda campuses.
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