Policies & Documents
The latest in energy industry regulations, updates and information
The latest in energy industry regulations, updates and information
What Businesses Need to Know
The National Energy System Operator (NESO) has published its final Transmission Network Use of System (TNUoS) tariffs for 2026/27. These final rates indicate a substantial increase in costs for demand customers as the UK accelerates investment in its electricity infrastructure to support renewable generation and long-term grid resilience.
Why TNUoS Charges Are Increasing
Several key factors are driving the uplift:
Grid modernisation and reinforcementMajor upgrades are required to transport power from new renewable assets—such as large offshore wind farms—to demand centres across the UK.
Ofgem’s RIIO-ET3 price control
The new regulatory period increases revenue allowances for Transmission Owners to fund this system transformation.
Targeted Charging Review changesMore costs are allocated through fixed daily charges, increasing the demand residual component.
Lower UK electricity demandCosts are being recovered across a smaller base of consumption, raising the per-unit cost.
Inflation and financial modelling updatesAdjustments to capital allowances and economic assumptions also contribute.
These changes are designed to support the UK's transition to a low-carbon electricity system. However, they will increase non-commodity costs for all electricity users from April 2026.
Final Rates for 2026/27
NESO’s published rates depend on your meter classification and location.You can find the full tariff tables and methodology here:https://www.neso.energy/industry-information/charging/tnuos-charges
How Charges Are Applied
• The non-locational demand residual (£/site/day) will appear on your invoice as a standalone line item, based on your distribution band.• Consumption-based charges are included within NHH unit rates.• For HH supplies, an interim charge structure applies.
Final tariffs have now been published by NESO.
Our Commitment
If you have questions or would like to understand how these changes may affect your organisation, please get in touch here https://www.evolve-energy.com/contact
Where does our electricity come from?
Our Fuel Mix shows where our electricity comes from. We are required by Ofgem to disclose our fuel mix and any part of electricity purchased for supply that we do not hold relevant evidence for is derived from the Residual Fuel Mix.
Evolve Energy Supply Limited Fuel Mix Disclosure relates to total electricity supplied in the period 1st April 2025 to 31st March 2026, and are as follows:
The Residual Fuel Mix is taken from the Department for Energy Security & Net Zero Fuel Mix Disclosure Data Table.
The Feed-in Tariff (FIT) scheme is a government programme designed to promote the uptake of small-scale renewable and low carbon electricity generation technologies.
The scheme was introduced in April 2010 and requires participating licensed electricity suppliers to make payments on both generation and export from eligible installations. The FIT scheme is available for anyone who has installed, or is looking to install, one of the following technology types up to a capacity of 5MW, or 2Kw for micro-CHP:
All Licensed Electricity Suppliers are required to participate in some aspects of the FIT scheme, including declaring their FIT status annually and taking part in the periodic and annual levelisation process.
Licensed electricity suppliers cannot offer FIT to customers unless they are confirmed to be a FIT licensee for which their status must be confirmed to Ofgem by 14th February each year based on one of the following three categories:
For more information on the scheme and how to apply please follow this link to the Ofgem website.
BPG’s status is presently a Non-FIT licensee.
In accordance with the Electricity Act 1989, Section A: Standard Conditions For All Suppliers 11 to 19: Industry Activities and procedures – Part 13 Arrangements for site access, Evolve Energy requires safe and unobstructed access to any supply point under our registration at all reasonable times for any purpose, provided that in an emergency access shall be afforded at any time without notice.
In the 2015 Autumn Statement, the Government announced its intent to reduce the impact of renewables policies on the costs of electricity for the most Energy Intensive Industries (EIIs).
This proposal would see EIIs exempt from a significant proportion1 of the costs of the Renewables Obligation (RO) and the Small Scale Feed-in Tariff (ss-FiT), in order to ensure that they maintain their competitiveness internationally. EII’s are currently entitled to cash compensation from the cost of these schemes (i.e. they pay the costs but receive compensation from the Government). From April 2017, it is proposed that this would change to a direct exemption at source; however, this is subject to State Aid Approval.
Under this exemption, companies operating in sectors such as metal casting, heavy manufacturing and mining will benefit, but non-exempt customers will pay extra to cover the cost of the exemptions. This cross-subsidy will put further upward pressure on prices for these non-EII customers.
EII’s are Energy Intensive Industries which include sectors such as mining and heavy manufacturing, and are distinguished by their trade and electricity intensity.
It is estimated that approximately 17TWh will be exempt from the Renewables Obligation (RO) and Feed In Tariff (FiT), with non-eligible customers expected to absorb the extra costs. This policy could add approximately £1.10/MWh to the RO forecast and around £0.30/MWh to the FiT forecast. This would mean an increase from current rates upwards of 6.3% and 6.4% for RO and FiT respectively. Costs will be recovered through the invoice charges of non-exempt customers.
Smart meters are replacing traditional gas and electricity meters in homes, small businesses and schools across Great Britain as part of an important upgrade to the national energy infrastructure and underpinning the cost-effective delivery of Government’s net zero commitment.
The rollout of smart meters to non-domestic sites within the mandate is estimated to lead to £1.5 billion of energy consumption reductions[1], driven by these consumers engaging with their smart meter data and identifying ways to reduce their energy use.
In order to drive forward further innovation and provide customers will access to their data, the Department of Energy Security and Net Zero have introduced policy changes to improve the smart meter data offer for non-domestic consumers. The scope of the policy changes apply to all customers to smaller businesses where the site supplies is in electricity profile classes 1-4 or with gas consumption below 732 MWh per annum.
These policy changes consist of:
On-request data offer: This will enable non-domestic consumers and their nominated third parties to request free access to (up to) 12 months of their historic smart meter energy use data in a machine-readable format via the internet. As per the policy, we will respond to data access requests within 10 working days, either granting data access (where all legal requirements are met) or clearly outlining why the request has been rejected and next steps.
Default data offer: We will make available free, user-accessible energy use information to customers within the scope of the Default Data Offer. Customers are required to contact our Account Services team on Account.Services@evolve-energy.com or by calling 0843 504 7799 to confirm they wish to access their data. You will be asked to verify your identity or provide a letter of authority if you are a TPI acting on behalf of a customer. Our AS team will provide a login to a hosted data portal to allow you to retrieve your half-hourly (electricity/gas) data retrieved from the AMR meter.
Awareness raising requirements with respect to data: We will regularly raise customer awareness of the routes by which you can access your smart meter energy use data for free.
[1] https://www.gov.uk/government/publications/smart-meter-roll-out-cost-benefit-analysis-2019
