IN the world of renewable energy, ‘grid constraints’ are often the final word on a project’s viability. However, Cwm Arian has challenged that narrative with the Trefawr Solar Array at Llanfyrnach, North Pembrokeshire.

Now up and running, the pioneering 525kWp ground-mounted solar PV development utilises a G100 grid arrangement to share a single connection with a neighbouring 900kW wind turbine. While local export capacity is strictly capped at 700kW, the site employs an intelligent export limitation system that allows the sun and wind to work in harmony.

By turning a constrained grid into a shared resource, Cwm Arian is demonstrating that with the right mix of smart technology and local collaboration, a sustainable future is well within our reach.

The journey to commissioning has been one of persistence and community spirit. The project’s foundations were laid by the late Daniel Blackburn and his colleague Alex Ferraro. Their vision was sustained with essential grants from the Welsh Government Energy Service.

Project Manager Michael Shakib, who led the scheme through its construction phase, inherited a platform built on years of collaborative effort between Cwm Arian, Dulas Engineering, and Pembrokeshire County Council. Majority funding from Ynni Cymru, a loan from the Development Bank of Wales and additional Redress funding have seen the project through to completion.

Beyond the high-tech engineering, Trefawr remains deeply rooted in local soil. Local partners included Malcolm Evans for fencing, Mike Wyatt of MW Consult Ltd for SuDS drainage planning, and Duncan Winton of TreesandTimber.co.uk for biodiversity enhancement and tree planting.

To celebrate this milestone, Cwm Arian is organising guided tours of the Trefawr Solar Array. These visits offer residents, students and renewable energy enthusiasts a unique opportunity to see firsthand how ‘smart’ grid technology is powering Pembrokeshire.

Contact Anna at [email protected] to learn more.