Non-Commodity Costs Outlook 2026/27

Beyond the Commodity Price: A Forward View on UK Electricity Costs  

Most energy budget conversations in 2026 start with commodity prices. But some of the largest cost increases facing UK organisations over the next two years are already determined – and they have nothing to do with wholesale markets.  

Non-commodity costs are up 13.23% in 2026/27, with further increases largely locked in for 2027/28. Driven by network investment, policy mechanisms, and regulatory decisions, these charges are becoming an increasingly significant share of total energy spend. These aren't forecasts subject to market sentiment. They are the product of regulatory determinations that have already been made.  

For large energy users, the question isn't whether these costs are rising. It's whether your forecasts, budgets, and procurement strategies reflect what's already coming.  

What this report covers  

• The full cost stack for 2026/27 and forward projections to 2028/29 — commodity and non-commodity, line by line  
• Why TNUoS charges are jumping sharply from April 2026, and why fixed residual costs will keep climbing through the decade  
• What the Nuclear RAB charge and the expanded EII Support Levy mean for non-EII customers specifically  
• Where are costs expected to ease — and why the relief is smaller than it looks  
• Four regulatory changes coming before 2028 that will reshape how costs are distributed across the market  

Download the report for a clear view of the costs already shaping future energy budgets—and the decisions organisations should be making now.