By Sean Macleod, Associate Ecologist at Pegasus Group 

 

Grid connection routes are now a planning issue. Here’s what a recent Scotland court decision means for developers. 

Developers in the energy sector used to rely on network operators to sort out grid connection routes. But after a recent court decision in Scotland, grid connection routes are now a material planning consideration that developers cannot ignore on their projects. 

In that court case, Scottish ministers denied Raeshaw Farms Ltd planning permission for an eight-turbine wind farm. Why? Because the judge ruled there was a failure to detail whether turbines and grid connection formed a ‘single project’ for the purpose of assessing its environmental impact.  

This has long-term ramifications for every stakeholder promoting energy projects. It means every renewable energy project must now account for how its grid connection fits in with the environmental assessment of the proposal. 

For developers, this introduces new planning and environmental risks that they must get ahead of.

 

What are some planning risks for energy developers? 

Traditionally, many development teams have operated on a few assumptions: 

  • Environmental impacts can be assessed after the details are known. 
  • The location and route of grid connections can be agreed on later.
  • Distribution Network Operators (DNOs) will handle corridor selection and infrastructure design independently.  

Today, however, ‘we’ll deal with the grid later’ is no longer an option, and neither is leaving the environmental impact assessment until last. The court’s decision has challenged that logic, with developers now expected to demonstrate that grid connection routes and environmental impact have been considered at the planning stage. 

The complication, of course, is that developers do not necessarily know all the unknowns at the onset of a renewables scheme they’re building. For example, they might not know: 

  • The scale of the landscape and ecological impact. 
  • The width or length of the needed corridor routes. 
  • Whether the infrastructure will be underground, overhead, or a mix of both. 
  • Whether the connection needs a minor substation or a major transformer. 

If a developer cannot show these details, it could motivate planning authorities to deny consent, or the scheme in question may become prone to legal challenges. The later you identify constraints, the more likely you are to run into potential redesigns, survey delays due to seasonal ecological windows, reprogramming around access and outages, or cost escalation once routes are fixed. 

 

Why energy projects need early environmental and delivery integration  

The most important thing for development teams to understand is that grid connections are fundamentally different from discreet pieces of infrastructure. They are linear developments that cut across land ownerships and sensitive habitat landscapes.  

Linear infrastructure requires linear thinking, which includes understanding the cumulative environmental effects of grid connections. Some routes may disrupt sensitive habitats and peatlands, while others may have negative visual impacts on landscape. Both are issues that could trigger protests or legal objections from the public. This is especially critical in Scotland, where peatland carbon, water environments, and visual impact often dominate scrutiny.  

But with clever corridor optioneering at an early stage, you can avoid selecting corridors that are environmentally unworkable. 

 

How can an Environmental Clerk of Works help bridge planning and environment on energy projects?

Corridor optioneering is precisely where Pegasus Group’s experience adds value.  Our specialist ecological construction team are all trained Environmental Clerks of Works (EnvCoW) who assist developers  through planning consent, while maintaining environmental protection and enhancement, but focusing on realistic delivery.  

At the most basic level, an EnvCoW makes sure the development is carried out in line with planning consent, and that environmental risks do not surprise the construction programme. This definition, however, undersells the ECoW’s role.  

In practice, they often act as the translator between disciplines, able to explain environmental constraints in construction language. They anticipate environmental problems before they occur and then design them out of the project.   

We avoid the trap of viewing grid connections as a post-consent problem. Instead, we help clients think strategically about grid routes early, including how they affect the environment – such as carbon-rich soils or watercourses and groundwater protection zones.  

For example, this might include working closely with engineers to: 

  • Advise on foundation types (e.g. rock anchors vs. wet concrete). 
  • Review material specifications to reduce chemical risk. 
  • Limit construction footprints. 
  • Influence the design of temporary access routes that can be fully reinstated. 
  • Sequence works around ecological seasons.  

During construction, an EnvCoW monitors compliance with planning conditions, while also ensuring agreed mitigations are implemented correctly to reduce the likelihood of environmental damage, reputational damage or consent conditions becoming project blockers.  

Projects across the UK – and especially in Scotland – now increasingly involve linear development and carbon-sensitive environments. Bringing a specialist onto a project early on can help determine whether a scheme delivers smoothly or stalls under environmental and regulatory pressure.  

If you have an energy project you would like to discuss, please get in touch.