We offer site investigation contracting with factual reporting, cross consultancy services.

Geotechnical  Consultancy

Geotechnical Consultancy

Geotechnical risk is one of the main considerations developers and engineers need to manage in order to deliver a successful project.

In-situ Testing  Earthworks

In-situ Testing Earthworks

Working closely with the laboratory and the consultancy teams, we specialise in working with contractors delivering the placement of engineered fill.

Laboratory  Testing

Laboratory Testing

Our modern testing facilities paired with qualified and experienced staff enables our clients to choose independent testing services, or testing as part of the overall site investigation package.

Contaminated Land

Contaminated Land

Our investigations range from Phase 1 reports, developing the conceptual site model to detailed quantitative risk assessments.



South West Geotechnical Ltd works within a wide variety of sectors.Clicking here will take you to case studies, by sector type, that demonstrate our capabilities and innovative approach.




Solar Park Developments

SWG has been involved with large scale solar parks since ~2012. Our involvement in this sector stemmed from the first 'feed-in tariff' wave of developments and our existing relationships with leading renewables firms that were diversifying from wind to solar. 


Developing our knowledge of the specific design requirements solar parks require helped us understand and meet clients' requirements from geotechnical assessments. We then continued to invest in and develop our in-house capabilities to enable us to provide a comprehensive service to this industry as it grew. This included developing our own innovative and cost effective pile testing methods and detailed corrosively assessments.


To date we have completed hundreds of large scale solar parks across the UK and Europe. These have ranged from <1MW to >250MW in size, including the UK's largest solar farm.


Looking forward, a lot more of the favourable development sites have been taken up and focus is now turning to more challenging sites such as former coal mines, brownfield land, soft peat areas etc. The SWG team uses out traditional geotechnical understanding, our experience of developing solar parks across the UK and our innovative approach to help developers overcome these challenges and deliver cost effective, engineering led schemes. 


Our scope of work is summarised below:



  • Desk studies / initial site appraisals

  • Window sampling / dynamic probing

  • Pile testing (both discrete and full scale)

  • Electrical resistivity testing

  • Thermal resistivity testing

  • Track design

  • Foundation recommendations for ancillary structures (DNO / sub-stations etc)

  • Corrosion Assessments

  • Soakaway testing

  • Land quality / contamination assessments


References from leading solar developers, technical assessors and EPC’s can be provided on request.


Please get in touch to see how we can help.


Solar Park Developments



South West Geotechnical
South West Geotechnical
South West Geotechnical