What does this mean for the consumer?
• Consumers have a direct relationship with
both ESB Networks and their chosen
ESB Networks Supplier
Focusing on the first element – Network
• Where do we expect to have charging
– On Street
– Car Parks
• Shopping Centres, Offices, Apartment blocks
What are the expected charging
Charge Functional Need Power (kW)
Standard 100% 3
Emergency 24km 25
Fast 80% 120
EV infrastructure what do we need
Network connection Charging Equipment ICT Platform
Can I charge my EV at home ?
• We already have 2M connections
nationwide Battery Capacity kWh
• Typical charge rate available 3kwh 40
• This should be sufficient for most
batteries on an overnight charge.
• So the answer is Yes…but with 20 Battery Capacity kWh
• Battery Technology rapidly improving 10
– Higher capacity batteries with shorter
charging times 0
– Increased demand for three phase Toyota G Wiz SMART Volt BYD F6 A class Mini E
charging PHEV For two EV
So what’s the impact of home charging
on the Network
• As EV penetration increases , we could find that the Low
Voltage network and potentially the supply levels to
houses will need to be reinforced and increased.
• Typical system peak is between 5-7 pm, an appropriate
mechanism for managing EV charging over this period
would be required.
• But that’s all part of the normal management of the
I forgot to charge my car at home –
• Expected to be used during day time by commuters.
• Existing LV cables in the streets of many urban areas.
• Easier to provide higher capacity charging than domestic situation
– 3 phase supplies available.
• Metered connection of up to 45kVA to be distributed to individual
• Opportunity for a flexible arrangement for options of single/three
phase and varying capacities .
How would Networks do this
LV cable in street
Charge points Charge points
Technical Implications to consider
Low penetration of on street chargers do not pose
significant risks to the Network stability.
As infrastructure proliferates and especially with the
demand for larger and faster charge points this could
give rise to system issue such as ,
– Harmonics generated by battery chargers
– Voltage disturbances
– Capacity problems
These are not new electrical issues and with a planned
development of any network they can be overcome.
Some general issues Networks need to
consider for on street charging
• Access control to charge points
• Safety of charge points for users and the general public
• Location of pillars and charge points
• But once again these are consideration we already deal
with in providing electricity infrastructure.
• Typically third party environments
• Retrofitting charge points would be dependant on available capacity
on existing supply.
– Depending on volume it could drive supply upgrades
– Local substation upgrades
– Additional circuits within complex.
• New builds could design EV charging into their electrical
infrastructure – link in with Electrical contractors/consultants
• Again high density of high capacity charge points could pose
Network disturbance issues
What does the consumer want ?
• Plentiful and unrestricted charge points
– Charging regimes
– Payment options
• Choice of suppliers
• Associated with their domestic account
• Pre-payment offering
• Mechanism to pay third parties e.g battery supplier
How do we integrate this??
• Networks already provide metering and data services to retail
• The EV proposition has some additional subtleties –
– The charge point is not exclusive to consumers
– Needs to accommodate multiple suppliers and flexible payment options.
– Has to be appropriate for our Regulated environment
So it would need,
• IT platform to link these elements along with the network imperatives
of providing a safe and reliable infrastructure to consumers
There are still some unknowns
• Diversity of battery technologies
• Would like to see clarity on standardisation of
– Charging regimes
– Communication protocols
• Government policies in relation to EV.
• We already have the infrastructure for low level charging
at the domestic level
• We can provide on street charge point connections in a
controlled and planned manner
• There are some technical implications for the network
and these will need to be analysed and assessed.