Vincent Square Flats Management Ltd Capacity Level Reduction for 68 Vincent Square
£4,600+ Per Year Saved by Adjusting Electricity Capacity to Demand
Client Overview
68 Vincent Square is a residential block in Westminster. The communal areas are supplied by multiple electricity meters with one advanced Half-Hourly (HH) supply under a landlord supply arrangement.
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 £3,800 per year from 1st April 2024.
DUoS + TNUoS Fixed Charges incorporated within the standing charge, over £3,200 per year from 1st April 2024.
Projected DuoS + TNUoS costs exceeded £7,000 per year with the unused capacity providing no operational benefit.
Energunite Capacity Level Reports
Energunite analysed three years of historical HH consumption data to determine the site’s true capacity requirement. This analysis identified a consistent level of unused capacity across each calendar year:
Calendar Year 2023 - 183 kVA of unused capacity
Calendar Year 2022 - 183 kVA of unused capacity
Calendar Year 2021 - 191 kVA of unused capacity
The proposed changes were reviewed by Vincent Square Flats Management Ltd and D&G Block Management 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 Result
A 160 kVA reduction was implemented following coordination with all stakeholders. No infrastructure or behavioural changes were required. This delivered savings of over £4,600 per year for the Customer.
The breakdown of savings are as follows:
Capacity level was reduced by 160 kVA effective from 1st April 2024.
DUoS Capacity Costs were reduced by £2,657.20/year for 2024/2025 period.
DUoS + TNUoS Fixed Charge within standing charge were reduced by £1,992.00/year for 2024/2025 period.
Daily savings increased further in 2024/2025 as costs continued to rise.
As of February 2026, 68 Vincent Square total savings exceeded £7,300 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.