Case Studies
Roberts Bryan Workshops
Wrexham
In 2023 NPES Solar designed and installed a 59.2kWp Solar PV system using inverters and optimisers, paired with Longi 450W high -efficiency panels. The system was tailored for the sites varying roof pitches and tenants layout, ensuring optimal performance across the estate.
- 132 x 450W Longi solar panels
- SolarEdge three-phase inverter system with power optimisers
- Module-level monitoring and fault detection
- Full G99 application and export limitation
The use of SolarEdge allowed for fine-grained system management and better performance under partial shading – perfect for a multi-unit commercial site

About this project
Roberts Bryan Workshops is a thriving estate, providing workspace for a variety of both small and medium sized businesses. With energy prices climbing and sustainability becoming increasingly important for their tenants, Roberts Bryan wanted a solution that would reduce long term energy costs, whilst supporting their green ambitions.
Performance and results (2 years on)
Annual Energy Generation:
- Estimated- 54,000 kWh per year
- Actual: Averaging over 56000 kWh/ year, thanks to the optimised design
Cost Savings:
- Annual savings of approximately £12,000 on electricity bills
- Estimated payback period of under 6 years
Carbon Savings:
- Over 24 tonnes of C02 saved annually
- Equivalent to planting more than 1000 trees
Business Benefits:
- Significant energy savings: Reduced reliance on grid electricity across multiple workshop units
- Tenant attraction and retention: Green credentials are now part of the workshops’ appeal, with many tenants valuing the sites sustainability
- Efficient monitoring: SolarEdge’s portal allows real-time system insight down to each panel, helping NPES and Roberts Bryan ensure continued performance
- Minimal maintenance: The smart optimiser system detects faults early, reducing downtime and unnecessary site visits
Job specs
What we achieved
59.2kWp
System Size
SolarEdge inverter system with power optimisers
Technology
Summer 2023
Installation Date
NPES Solar Ltd
Installer
Gallery
Check out the final result




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WV107BY
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