Network Homes has been leading the transformation of the Stockwell Park Estate near Brixton since 2005. It has invested more than £100 million so far on refurbishment, new-build and community enhancement and a further £75 million is earmarked for completion of the programme.
The social housing properties on the estate are connected to a heat network. As both the landlord and energy supplier, Network Homes had previously charged its residents a flat rate for the energy it supplied as it was unable to monitor energy consumption in individual properties across the network.
Funded by the Department of Energy and Climate Change (DECC), the purpose of the project was to improve the performance of the heat network for both tenants and Network Homes by trialling the use of the web-based Guru Pinpoint platform.
Before the project started, Guru Systems installed its smart metering and monitoring technology at the point of generation and across the network in individual properties. This gave Network Homes real-time data on how its network was functioning for the first time.
The system allows the network operator to calculate exactly how much to charge for the energy it sells, as well as displaying up-to-the-minute data on energy use to residents through a pay-as-you-go monitor in their homes.
Data collected by the monitoring system uncovered network losses of 3,350kWh per dwelling per year (roughly equivalent to the total annual useful heat requirement), while Pinpoint also diagnosed issues with the network’s Heat Interface Units (HIUs).
The analytics and diagnostics delivered by Guru Pinpoint provided the information required to implement improvements to the Stockwell Park network. These changes resulted in:
• 53 per cent reduction in network heat losses
• 47 per cent reduction in terminal run temperatures vs. ambient for dwellings with interventions
• 60 per cent reduction in terminal run losses for dwellings with interventions, saving more than 1,700kWh per annum across the site.
Over the course of the project, residents’ heat consumption reduced by 20-30 per cent, saving £140 per household per year.