By Chris Calvert, Executive Director of Planning at Pegasus Group

New UK grid reforms have sharply raised costs of reserving grid capacity. What that means for developers of renewable energy projects is that they must now answer a fundamental question before spending tens of thousands of pounds on grid commitments: “Can my energy site actually secure planning consent?”  

Knowing the answer will shape investor confidence and determine whether a developer should invest in grid commitments. Historically, developers of renewable energy projects could submit a planning application and secure a grid connection in separate phases, with modest upfront costs.  

But post‑grid reform, higher grid costs mean the logical way to manage risk is to have better clarity on whether a site can secure planning consent before committing to grid capacity. 

Planning and grid strategies cannot be treated as separate workstreams. They must be built together, and you need to know very early on whether a site has any realistic prospect of gaining planning consent.  

 

What are the critical site flaws that stop renewables projects in their tracks? 

Before you invest any money, a good consenting strategy has to identify all the showstoppers for an energy project that could kill it.

While there are many blockers to list, a few common ones include the following. 

Heritage impacts 

  • Heritage assets are often one of the most decisive constraints. Even a single heritage asset, such as a listed building, let alone a cluster, can render a site unviable, regardless of its planning benefits.  

Landscape and visual impact 

  • Landscape and visual impact can be especially acute for onshore wind, particularly as modern wind turbines are taller, which potentially engages landscape and visual constraints over a far broader geographical area.  

Ecology and environmental impact 

  • While a less obvious constraint, building on or near sensitive habitats can make a scheme unviable if the net harm is too high.  

Many impacts like the above can usually be spotted quickly with a site appraisal from, for example, a heritage team or an environment team.  

The point is that if a site is doomed to fail, it should fail fast. If it’s poised to succeed, it should be backed confidently and early. A multidisciplinary team can help give you that rapid assessment on a site’s viability to pinpoint any glaring weaknesses.  

This is the approach we take at Pegasus Group. We can quickly pinpoint whether a site has legs, backed by our experts in heritage, landscape, drainage, transport, economics, planning, ecology, and more.

 

“Where do I start?” Finding the best site for your energy project… 

With new constraints for securing grid connectivity, developers need to look more widely at available land.  

Instead of looking at individual land parcels, you can start with a regional site search using GIS opportunity mapping. This scans entire geographies for viable pockets where grid investment is genuinely worth it.  

Using this type of top-down method, developers can quickly identify: 

  • Areas with high red-flag constraint density 
  • Key landscape and visual receptors that present the greatest degree of consenting risk 
  • Heritage-sensitive zones to avoid entirely 
  • Locations where grid and planning prospects align 

From there, site-specific assessments can narrow the field further to save considerable time and risk of pursuing undeliverable sites. 

 

How does a better consenting strategy lead to better grid outcomes? 

Developers who front-load their consenting strategy benefit in several ways:  

  • Higher confidence when securing grid capacity for a site they know has real potential.  
  • Reduced duplication of work and unnecessary spending due to better sequencing of surveys, engagement, and design. 
  • Improved investor and board confidence, because every stage of the project is based on the clearest early insight available. 
  • A planning programme that matches grid timelines by aligning the two workstreams. 

Grid constraints are now one of the largest financial risks in renewable energy development. But they don’t have to be. So, before you commit to the grid, commit to understanding your site’s viability. With the right early consenting strategy, developers can reduce exposure and move faster with greater certainty. 

If you’re planning new renewable projects in 2026 and beyond, we can help you identify the right site, and the right sequence of actions to secure consent with confidence.  

 

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