The Royal Welsh Agricultural Society’s permanent showground at Builth Wells is the largest agricultural show venue in Europe and, for a solar installer, one of the most interesting commercial opportunities in mid-Wales. A 130-acre estate with permanent livestock halls, machinery exhibition buildings, hospitality pavilions and grandstands generates electricity demand that runs 11 months of the year — with a peak in July during the Show itself but a substantial baseline load from events, training, agricultural society administration and winter storage operations through the remaining 10 months.
The showground energy profile
The Royal Welsh Show draws over 200,000 visitors across four days in July. During Show week, electricity demand spikes significantly — temporary catering, demonstration machinery, livestock preparation and grandstand broadcasting all draw heavily. For a solar installation, Show week represents exactly the summer peak generation window: July yields in LD2 are among the highest of the year, and the generation curve aligns closely with the summer event demand spike.
Outside July, the showground hosts conferences, trade events, agricultural society meetings, livestock breed society gatherings and specialist agricultural training courses through the October to April period. Catering facilities, offices and the permanent animal housing carry consistent baseload throughout. Winter illumination of the site for late-season events is partially offset by a battery system charged during autumn daylight hours.
A 150 kWp installation on permanent showground rooftops generates approximately 141,750 kWh annually at 945 kWh/kWp for LD2. With 65% blended self-consumption at 26p/kWh and 35% export at 7.5p SEG, year-one combined benefit reaches approximately £32,000 on £130,000 installed cost. Under AIA full-expensing at 25% Corporation Tax for the Show Society’s charity-trading subsidiary structure, effective capex falls to approximately £97,500. Post-tax payback: 3.0 years.
Permanent building stock assessment
The showground’s permanent building stock spans several decades of construction. The newer machinery halls and livestock pavilions from the 1990s and 2000s are standard portal-frame and standing-seam metal construction — the most straightforward rooftop solar form factor, where direct-fix clamps attach to the standing seam without drilling. Older buildings from the 1970s may require structural checks before racking loads are applied.
FLD’s standard survey for a multi-building showground installation includes a structural condition assessment of proposed installation zones, half-hourly interval data analysis from the site’s meter (DNO data request), and a building-by-building generation and self-consumption model that apportions the financial benefit across the show society’s different cost centres.
Wye valley farm solar from Builth Wells
Builth Wells serves as the practical hub for FLD’s central Powys farm survey work. A 25-mile radius from Builth Wells covers upland sheep and hill-cattle holdings from the Bannau Brycheiniog northern slopes up through the Irfon valley and east along the Wye to the Radnorshire border.
Farm installations in this catchment are almost universally accessed via Farming Connect grant support. The upland holding economics here — with lower productivity per acre than the Tywi or Usk valleys — mean the grant contribution is typically necessary to make a farm solar installation financially straightforward without depending on unusual electricity consumption patterns.
A Farming Connect pre-application for a LD2 or LD3 farm installation requires FLD’s feasibility report documenting the roof dimensions, orientation, shading analysis, generation model and financial appraisal. We provide this documentation as part of the initial no-obligation survey, timed to support the Farming Connect application window.
Builth Wells domestic solar
The Victorian spa-era villas on the hillside above the Wye are the premium domestic solar opportunity in Builth. Properties in Garth Road and the higher streets have south-facing rear pitches at 35 to 45 degrees with unobstructed sky access from the elevated hillside position. A standard 4 kWp system on a Builth Wells Victorian villa generates approximately 3,780 kWh per year. With battery storage and time-of-use tariff, annual electricity cost falls to under £200.
For town-centre Victorian terraces, roof orientation varies with street alignment. FLD uses PVGIS horizon shading data on every domestic survey to confirm actual yield before committing to a specification.
Getting a Builth Wells or Royal Welsh Showground assessment
FLD covers LD2 via the A40 and A470 in approximately 88 minutes from Swansea. Builth Wells combines with Rhayader and Brecon on a central Powys circuit. Call Paul on 01792 680611 to discuss a showground commercial survey or farm installation in the Builth Wells area.