engineering intelligent solutions

Case Study: Green Switch Solutions ltd

Green Switch Solutions ltd are a leading renewable project developer specialising in fully funded commercial PV Farms, Roof Mounted PV & Biomass Installations to agricultural and commercial markets in the UK.


The Challenge 

In early 2015, Green Switch Solutions approached Lucy Electric to deliver and install the client side switchgear infrastructure for two 3000kVA solar farms simultaneously. All equipment had to be delivered, installed and commissioned to both sites by the 14th March 2015 in order to achieve the connection of the solar farm before the Ofgem feed in tariff change at the end of March, which gave Lucy Electric just four weeks. Each solar farm would feed electricity to approximately 1000 homes in the local area and the site was required to be live by the 31st of March.


Our Solution

Utilising Lucy Electric’s well developed procedures and expertise in delivering Medium Voltage (MV) switchgear, Lucy Electric’s Energy Services department immediately assigned a project manager to ensure resource availability to electrify the two solar farms against an extremely tight deadline.

Both solar farms had very similar MV needs, so Lucy Electric used identical client side MV switchgear. Lucy Electric identified that its Sabre range of switchgear would be the most efficient for the site due to its resilience and its performance characteristics when connecting generation sites.

This equipment consisted of one Sabre VCE2a 250A CB motor close 24VDC actuator with OC&EF protection 200/100/1A CT’s, directly coupled to a non-auto/non protection Sabre VCE2a as a point of isolation for the rear mounted direct coupled with a three phase - three limb air metering unit (11000/66000/110V - 400/200/5A CT’s), providing voltage reference for G59 tripping in conjunction with CB actuator previously mentioned.


Site one: Walmoor Solar Farm

  • DC capacity:                      3.68 MW
  • Agreed Export capacity: 3,000 kVA
  • Grid connection voltage: 11kV
  • DNO:                                  WPD East (Nottingham)

Site two: Rookery Solar Farm

  • DC capacity:                      2.71 MW
  • Agreed Export capacity: 3,000 kVA
  • Grid connection voltage: 11kV
  • DNO:                                  SSE (Bognor)


In total, four Lucy Electric engineers worked to install the projects.



Lucy Electric was able to meet the extremely short deadline by clear and well planned project management from Lucy Electric’s Energy Services department. Furthermore, by using its highly trained jointers and fitters the equipment was delivered on time, installed and commissioned in the allotted project time frame.

Lucy Electric prides itself on delivering the best solutions for our customers and their clients. Lucy Electric offer a range of HV, MV and LV switchgear products up to 145kV and associated protection, including G59 and NVD for generation sites. To find out more about these market leading products and more, please contact the UK sales office on 01844 267 222 or

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