In Autumn 2021, Cardiff Capital Region (CCR) launched 4 challenges seeking innovative deployment technologies to support the transition to zero emission council fleets. Challenges included: 1. On-site renewable energy for EV fleet charging at council depots Optimisation of on-site renewable energy for EV fleet charging at council depots – KTN (ktn-uk.org) Challenge Lead council: Merthyr Tydfil The Challenge: To optimise on-site renewable energy for EV fleet charging at council depots. Solutions will be scalable and applicable to other Local Authorities in the region.   2. Digital twins for management of large-scale renewable energy Digital twin for management of large scale renewable energy next to depot – KTN (ktn-uk.org) Challenge Lead council: Monmouthshire The Challenge: Aim to find data driven approaches to deployment of future vehicles and infrastructure for zero emission vehicles.   3. Zero emission auxiliary energy supplies for utility and community vehicles Zero emission auxiliary energy supplies for utility and community vehicles – KTN (ktn-uk.org) Challenge Lead council: Monmouthshire The Challenge: Aim to find integrated energy solutions to enhance the energy capacity of zero emission vehicles to allow auxiliary energy usage.   4. Optimising vehicles and charging infrastructure for council fleet to transition to EVs. Optimising vehicles and charging infrastructure for council fleet to transition to EVs – KTN (ktn-uk.org) Challenge Lead council: Caerphilly The Challenge: Aim to find digital solutions to enable the right procurement decisions to be made for the optimisation of vehicles and charging infrastructure to transition to electric vehicles.