BEIS Innovative Domestic DSR Competition
The Barnsley Domestic Demand Side Response (DSR) project targets new build properties (Code 4 Sustainable Homes) with already installed dual purpose air source heat pumps (ASHP’s) and solar PV, and adds a smart battery and control system, to generate analytical household energy demand data, which in turn, will form the basis of a demand side response commercial model, benefiting tenants, national grid and the wider low carbon community. A second set of homes built post war and fitted with dual-purpose air source heat pumps will provide an additional subset of analytical data to test the DSR model.
Both groups of data sets share a high penetration of installed ASHP’s on the feeder line into the local substation, making the monitoring and data analysis of the substation an important part of Phase 2 of the project.
Energise Barnsley is the lead partner for the collaboration. The other collaboration partners for the feasibility study are Oxford Brookes University (academic partner), Upside Energy (aggregator) and Sonnen (battery manufacturer). For Phase 2 the collaborative partners are Energise Barnsley, Oxford Brookes University, Passiv Systems, Sonnen and Northern Powergrid.
One of the stakeholders in Energise Barnsley, Barnsley Metropolitan Borough Council, has through their ‘Low Carbon Agenda’ fitted over 600 ASHP’s in domestic dwellings, replacing gas boilers, through the tenant management company ‘Berneslai Homes.’
With the aim to reduce carbon dioxide emissions across the borough and improve the lives of residents in Barnsley, the council and community energy society has taken steps for the creation of low carbon generation of electricity and the electrification of heat in domestic dwellings.
These two low carbon technologies have a demand or supply affect on the local network and require a functioning flexible local grid in order to permit further installations, with the resultant reduction in overall carbon dioxide emissions.
The ASHP’s are very efficient but require more power to work when air temperatures are low. There is a clear correlation between increased energy demand, or energy spikes, of homes fitted with ASHP’s, coinciding when the national grid is at ‘peak demand’. These periods are most prominent on cold winter days between 7am and 9am & 4.30pm to 7.30pm.
This project aims to use the smart battery, thermal store and thermal value of the homes with ASHP’s to shift peak demand of the homes away from peak national electricity demand, and to further flatten the profile spikes of electricity demand from these houses, whilst incentivising the tenants to react to a price based demand side response trigger.
The technical capability to retrofit a battery into a home, and create a smart interface with the existing installed technologies is available. However, the financial model to create price based or incentive based demand side response income streams for the domestic dwelling is currently unavailable. An outcome of the project will be to create a tenant friendly interface to demonstrate the benefits of demand side response, and to create a financial model to stimulate more demand side response technology innovations.
The homes with ASHP’s in our project are solely reliant on electricity for their total household energy consumption. In the current marketplace there is little choice in time of use tariff’s or discounts for single use energy tariffs. Another outcome will be to demonstrate increased electricity bill savings for the tenants by shifting their electricity demand profiles to stimulate more competition for time of use tariffs.
The collaboration partners have successfully recruited, installed, analysed and tested a smart battery in one of the tenanted homes, and used this information to build the case for scaling up of the project in Phase 2.