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APPENDIX 1 - EVC Dvelopment Methodology

Argyll and Bute Council · 1 December 2022
Back to Environment, Development and Infrastructure Committee — 1 December 2022 and its agenda

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APPENDIX 1: EVC INFRASTRUCTURE DEVELOPMENT METHODOLOGY –
(UPDATED 9.11.21) 
Aim: to inform Part Two of the EVC strategy, with a view to arriving at a consolidated
long list of future EVC sites across various asset groups. Focus on network coverage
[addressing any gaps in the existing network], with network expansion [expansion of
existing provision on existing sites] to follow. Focus on equity. 
Infrastructure should be split into three distinct themes, with a default charger
type/composition per theme:
Theme 1 – charging on the move [rapid [50kw] – 90mins to 2 hours to fully
charge]
This theme should provide rapid chargers at/on/near the public road network [and as
that relates to car ferry routes]. 
The assumption is that users will utilise these chargers while ‘on the move’ for a ‘top
up’, therefore these should be in the fastest charging category. 
Theme 2 – destination charging [fast [22kw] – charge in 4 hours; slow [7kw] –
charge in 7 hours]
This theme should provide fast chargers at locations where users are likely to leave
their cars for an extended period of time such as long stay off-street car parks, with
the default charger in these locations being fast. 
Slow chargers may be considered for transport hubs/park and ride facilities where
users are likely to leave their vehicles overnight. 
Theme 3 – residential charging [slow [7kw] – charge in 7 hours]
This theme should provide overnight charging capability for residential housing which
lacks on street parking, either retrospectively [likely responsibility of RSLs] or through
planning gain. 
Theme 1 – charging on the move
Addressing any gaps in the existing network to provide for one rapid charger every
25 – 35 mins [HiTRANS/Strathclyde University methodology for the FASTER project
recommend the figure of 30mins to ensure driver confidence], as an aspiration, while
acknowledging that this may not be appropriate for every setting:
 Sites should be at/on/near existing settlements with local amenities, with a
view that the network development should bring consequential economic
development gains e.g. EV users utilise local shops, cafes etc. while their car
charges. 
 Sites should be in Council ownership/control
 Consideration of grid capacity and associated cost barriers. 
 Sites should have the potential for future expansion.

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 Delivery prioritised in tranches according to the existing road and pier
hierarchy
 Sites not in Council ownership can be considered if necessary to fill a network
gap. Bringing these into Council ownership would be preferable. 
Therefore the strategic priorities for site identification and delivery should be as
below: 
Gaps every 25-35 minutes
Hierarchy Priority rating
A roads 
Principal car ferry ports [mainland side]
1
B roads 
Principal car ferry ports [island side] 
Car ferry ports [mainland side]
2
C roads 
Car ferry ports [island side]
3
U roads 4 
Note: this is a theoretical methodology at this point – it is unlikely that significant
gaps will exist further down the priority rating/hierarchy. 
Theme 2 – destination charging 
This theme should provide for charging infrastructure where users are likely to leave
their cars for an extended period of time. 
 Sites should be in Council ownership as part of existing medium-long stay
parking provision
 Sites not in Council ownership can be considered if necessary to fill a network
gap. Locating chargers at site within Council ownership would be preferable. 
At least one fast charger
Hierarchy Coverage Priority rating
Towns 1,000 – 2,000 
Principal ferry ports
[mainland side] 
Rail park and rides 
Airport [mainland]
One car park 
All 
All 
All
1

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Towns 2,000 to 5,000 
Principal ferry ports
[island side] 
Ferry ports [mainland
side]
25% of off-street car
parks [largest to smallest
or as appropriate for local
needs] 
All 
All
2
Towns 5,000 to 10,000 
Ferry ports [island side]
50% of off-street car
parks [largest to smallest
or as appropriate for local
needs] 
All
3
Towns of greater than
10,000 
Island airports
All off-street car parks 
All
4
Theme 3 – residential charging
This theme will need to be explored further to see if there are any residential areas
with a lack of on-street parking which are within Council ownership. 
At present it is anticipated that the Council will have little if any involvement in
providing residential charging infrastructure as the requirement for this is likely to be
on RSL owned sites. 
Future planning policy should reflect the need for residential EV provision. 
Note for all themes: in developing the consolidated long lists consideration will
need to be given to suitable delegated infrastructure cost barriers relative to the
particular location and likely future usage. These barriers or cost ranges are likely to
become clear once sites are selected and cost estimates can be prepared.