UK’s First Nationally Significant Solar Farm - Clark Frost

In this episode of The Future of Solar Photovoltaics Podcast, Vikram Kumar speaks with Clark Frost of Heathcote Holdings about the civil engineering behind one of the UK’s largest solar infrastructure projects. Clark shares insights from over 36 years in construction, starting with the UK’s Youth Training Scheme and progressing into large scale infrastructure and renewable energy projects. The conversation explores the practical realities of building solar farms at hundreds of megawatts scale, including land preparation, piling, drainage and site logistics. They discuss working on coastal alluvial ground, installing 12 metre screw piles, managing drainage across agricultural land and coordinating heavy machinery across a thousand acre construction site. The episode also covers the importance of enabling works, health and safety management and the increasing complexity of multi contractor solar developments. As the UK moves toward much larger solar projects, this discussion highlights how solar farms are evolving into major national infrastructure, combining civil engineering, electrical systems and long term energy investment. A rare behind the scenes look at how large scale solar farms are actually built. 00:02 Introduction and welcome 00:18 Why solar matters, UK energy and labour shortages 02:47 Clark Frost’s background in civils and construction 04:02 Entering solar through enabling works, civils and screw piling 06:40 Trust, credibility and working with Heathcote 09:10 Cleve Hill in perspective and the scale of NSIP solar 11:11 Heathcote’s scope at Cleve Hill Solar Farm 12:05 Pile testing, electrical compounds and battery storage foundations 12:48 UKPN overhead line diversion and cable works 13:15 Earth moving, habitat works and wetland creation 14:09 Screw piles, alluvium ground and 12 metre foundations 16:41 Moving 20000 cubic metres of soil and NSIP scale 17:57 Logistics, collaboration and daily site coordination 19:59 How a 400 megawatt NSIP differs from a 50 megawatt solar farm 22:15 Summer versus winter conditions on a thousand acre site 24:03 Roads, trackway and container logistics 24:41 Half a million panels and future solar pipeline scale 25:40 Module handling and working at height 27:09 Flood risk and sea defence conditions 28:37 Drainage design on flat agricultural land 30:53 Labour checks, passports and compliance 32:40 Multi contractor risk and collaboration 33:52 How the industry must improve for larger projects 35:22 Electrical hazards, cable faults and quality control 38:14 Battery storage, ideal partners and client expectations 41:08 Reliability, quality and honesty 41:32 Closing remarks