Crowdflex
What is Crowdflex?
Crowdflex is an Ofgem Strategic Innovation Fund (SIF) project that looks to understand how domestic flexibility can be used to help manage the electricity grid. Domestic flexibility refers to households shifting the times they use energy to help balance supply and demand. This helps consumers to reduce their energy costs.
In the first phase of the project, Crowdflex looked at historical data to understand how consumers on time-of-use tariffs responded to price signals by changing their behaviour. These tariffs offer consumers cheaper electricity prices when electricity demand is low, or generation is high. The study found that time-of-use tariffs can help customers reduce their evening peak demand by up to 23%.
In the beta phase of the project, consumers will take part in flexibility trials exploring two kinds of flexibility services:
- Utilisation service: consumers will be paid to turn up or turn down their energy use at certain times
- Availability service: consumers will be paid a regular fixed payment to make their assets available to the grid e.g. to plug in their electric vehicles
These trials will help to inform thinking in the Control Room on how to manage the grid at different times of day and at different times of the year. The data gathered will provide a better understanding of system challenges like peak demand, network constraints and the potential balancing solutions which distributed domestic assets could provide.
Recruitment for these trials started in spring 2024, with OVO Energy and Ohme EV offering the service to their customers.
Crowdflex is also being delivered by a consortium from across the energy sector: Centre for Net Zero, ERM, Amazon Web Services (AWS), National Grid Electricity Distribution, Scottish and Southern Electricity Networks, The Smith Institute and Centre for Sustainable Energy.
Benefits
The learnings from Crowdflex could deliver multiple benefits, such as:
- Lowering customer bills
- Reducing the costs of grid balancing and network reinforcement
- Enabling greater market participation on the demand side
- Increasing the use of renewable generation and lowering carbon emissions
Winter 24-25 trial reports
Read our CrowdFlex Winter 24-25 trial reports below.
| Availability trial |
| Utilisation trial |
| Availability customer feedback |
| Utilisation customer feedback |
Mid-project Update, January 2025
Read our CrowdFlex Beta Annual Progress Report and the Report Summary below, and click the video button below to watch our mid-project update.
| Read the summary |
| Read the report |
| Watch video |
ENA Project Page
Here you can find useful summary information on the Energy Networks Association (ENA) website.
Latest news
CrowdFlex publishes latest results and insights from large-scale domestic flexibility trials
Following on from the success of this project’s summer trials in 2024, CrowdFlex has delivered a new series of trials, this time over the more energy intensive winter months.
Pioneering CrowdFlex project successfully completes first year of domestic flexibility trials
CrowdFlex has successfully completed its first year of large-scale trials, with project partners OVO and Ohme EV’s customers incentivised to use their electricity flexibly by adjusting their energy usage (turn-up or turn-down) or making assets like electrical vehicles available to the grid for automated control of when to charge.
CrowdFlex innovation project announces final domestic flexibility trial results, whole project trials analysis and model development success
Following the completion of the summer 2025 trials, the final set of results have been published along
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Strategic Innovation Fund (SIF)
The Strategic Innovation Fund (SIF) is a funding mechanism for the Electricity System Operator, Electricity Transmission, Gas Transmission and Gas Distribution sectors.