Intero Management Company (Clapham) Ltd Capacity Level Reduction for Stane Grove
£10,200+ Per Year Saved by Adjusting Electricity Capacity to Demand
Client Overview
Stane Grove is a street range, comprising mainly of residential properties and a small number of commercial units . The communal areas on are supplied by two advanced Half-Hourly(HH)electricity supplies under the landlord agreement.
The Challenge
Following Ofgem’s Targeted Charging Review (TCR), the site faced sharply higher pass-through Distribution Use of System (DUoS) and Transmission Network Use of System (TNUoS) charges for its HH supply. These charges appeared both as separate line items and within the standing charge of energy bills. They were unavoidable unless the contracted capacity level was amended.
DUoS Capacity Costs applied at a level above actual operational need, over £5,200 per year from 1st April 2026.
DUoS + TNUoS Fixed Charges incorporated within the standing charge, over £10,400 per year from 1st April 2026.
Projected DuoS + TNUoS costs exceeded £15,600 per year with the unused capacity providing no operational benefit.
Energunite Capacity Level Reports
Energunite analysed one year of HH consumption data of the Main Supply to determine the site’s true capacity requirement. This analysis identified consistency of unused capacity across the seasons:
Winter 2024 - 75 kVA of unused capacity
Spring 2025 - 74 kVA of unused capacity
Summer 2025 - 76.5 kVA of unused capacity
Autumn 2025 - 43.3 kVA of unused capacity
Energunite Capacity Level Reports
Energunite analysed one year of HH consumption data of the Secondary Supply to determine the site’s true capacity requirement. This analysis identified 100% of unused capacity across the seasons:
Winter 2024 - 100 kVA of unused capacity
Spring 2025 - 100 kVA of unused capacity
Summer 2025 - 100 kVA of unused capacity
Autumn 2025 - 100 kVA of unused capacity
The proposed changes for both supplies were reviewed by Intero Management Company (Clapham) Ltd and Fry & Company in their capacity as the managing agents. This review confirmed technical and operational suitability.
Energunite Capacity Level Reductions Service
Energunite delivered the Capacity Level Reductions service in line with its standard delivery workflow. This includes:
Agreeing a new connections agreement with the local District Network Operator (DNO) at the revised capacity level.
Updating the DUoS Tariff ID with the relevant Distribution Pricing team.
Informing the electricity supplier of the changes in pass-through charges from the effective date.
Ensuring energy bills were charged correctly by suppliers moving forward.
Informing energy negotiators of correct pass-through charges which are to be agreed during supply contract negotiations.
Reporting the results of the completed works in a tangible report for the Customer to clearly understand.
Monitoring actual savings achieved on a continuous basis where up to date calculations can be provided upon request.
Capacity Level Reductions Results
A 51 kVA reduction was implemented following coordination with all stakeholders. No infrastructure or behavioural changes were required. This delivered savings of over £3,400 per year for the Customer.
Capacity Level Reductions Results
A 100 kVA reduction was implemented following coordination with all stakeholders. No infrastructure or behavioural changes were required. This delivered savings of over £6,800 per year for the Customer.
The breakdown of savings are as follows:
Capacity level was reduced by 100 kVA effective from 1st November 2025.
DUoS Capacity Costs were reduced by £2,638.95/year for 2026/2027 period.
DUoS + TNUoS Fixed Charge within standing charge were reduced by £4,242.369/year for 2026/2027 period.
Daily savings increased further in future years as costs continued to rise.
As of March 2026, Colwell House total savings exceeded £460 and continue to accrue daily.
Reviewing the Capacity Position of Your Assets
To evaluate the capacity position of one or more buildings within your portfolio and identify potential efficiency improvements, please contact us.
The breakdown of savings are as follows:
Capacity level was reduced by 51 kVA effective from 1st November 2025.
DUoS Capacity Costs were reduced by £1,34.86/year for 2026/2027 period.
DUoS + TNUoS Fixed Charge within standing charge were reduced by £2,101.64/year for 2026/2027 period.
Daily savings increased further in future years as costs continued to rise.
As of March 2026, Colwell House total savings exceeded £100 and continue to accrue daily.