Cheshire Constabulary needed a fleet electrification plan, but it sent no list of which vehicles belong to which site. Dynamon used ZERO to work out each vehicle's home depot from the telematics, simulate its real journeys against current EV models, and size chargers for all 24 locations.
Fleet
Commissioned by
Key findings
- 620 vehicles modelled from 626 registered, using real telematics in ZERO.
- 88% of modelled vehicles can complete at least 95% of their journeys on a current EV.
- 24 locations all need depot chargers, with each vehicle's home depot worked out from overnight parking.
- 131 chargers recommended: 118 at 11 kW and 13 at 50 kW.
- 478 vehicles complete 100% of their journeys on a current EV.
“By combining Dynamon’s analysis with real operational fleet data and input from police subject matter experts, this project provides a robust evidence base for understanding the scale of police fleet electrification and the investment needed to deliver it.”
Kate Kirk-Walsh, Net Zero Projects Manager, Midlands Net Zero Hub
The challenge
Cheshire Constabulary registered 626 vehicles across 24 locations. Of those, 620 had enough telematics to model. Planning depot charging still needs one more fact: which vehicles belong at which site, because the chargers have to sit where vehicles park overnight and where their days start and end.
The force did not send that list. Without a home depot for each vehicle, charger counts and site power demand cannot be allocated. The allocation had to come from the telematics.
The approach
Dynamon imported Cheshire Constabulary's telematics into ZERO and simulated each vehicle's real journeys against current EV models. That showed which vehicles can move to electric on the journeys they already run.
With no site list to work from, ZERO assigned every modelled vehicle to a home depot from the data itself. The assignment used where each vehicle parks overnight, and where its days start and end. That placed the fleet across all 24 locations.
Dynamon then sized the depot chargers for each site and worked out the power demand those chargers would place on the local supply.
The results
Of the 620 modelled vehicles, 478 complete 100% of their journeys on a current EV. A further 68 complete 95–99%. Together, 546 vehicles (88% of the modelled fleet) can complete at least 95% of their journeys on a current EV.
All 24 locations need depot charging. ZERO recommended 131 chargers.
Those charger numbers rest on the home-depot assignment. Because each vehicle was placed from overnight parking and the start and end of the day, Cheshire has a site-by-site charging plan without having supplied a vehicle-to-site list.
- 118 chargers at 11 kW
- 13 chargers at 50 kW
Part of a national programme
This study is one of 12 emergency-service fleet reports Dynamon produced for the Midlands Net Zero Hub and the Department for Energy Security and Net Zero, with the Home Office.
Across those fleets, about 7,500 vehicles were registered at 480 locations, and about 6,400 were modelled on 26.5 million miles of real telematics. 82% of the modelled vehicles, about 5,300, can go electric at their next replacement while completing 95% or more of their journeys. The programme recommended 1,563 depot chargers in total.
Separate regional studies in Nottinghamshire, South Yorkshire and West Yorkshire looked at police, fire and ambulance services sharing electrical infrastructure. At suitable co-located sites, shared infrastructure could cut grid upgrade costs by around 20%.
Midlands Net Zero Hub has published the national assessment of all 48 UK police forces and agencies. It estimates around 18,300 charge points across more than 2,000 police sites, and an investment of about £1.4 billion. Around 80% of that cost is grid connections and electrical upgrades. Cheshire Constabulary received access to ZERO for further scenario planning.
Cheshire Constabulary now has a depot-level electrification plan drawn from the journeys its vehicles actually run, with a home site for every modelled vehicle.