Conor Garrigan Esb

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SEI Electric Vehicles Conference, April 2009

Text of Conor Garrigan Esb

  • Infrastructure Issues for Electric Vehicle Deployment in Ireland

    Conor GarriganESB Networks

  • Regulatory Background

    Generation :ESB PG plus independent generatorsTransmission TSO: EirgridDistribution DSO: ESB NetworksSupply : ESB Customer Supply ( PES) plus independent Suppliers

  • What does this mean for the consumer?

    Consumers have a direct relationship with both ESB Networks and their chosen supplier

    ESB Networks Supplier


    Market Systems

    Work ProcessesCommercial arrangements

  • Focusing on the first element Network connection

    Where do we expect to have charging points

    Domestic On Street Car Parks

    Shopping Centres, Offices, Apartment blocks

  • What are the expected charging requirements.

    Charge Functional Need Power (kW)Standard 100% 3

    6-8 hours

    Emergency 24km 25in 10mins

    Fast 80% 120in 10mins

  • EV infrastructure what do we need

    Network connection Charging Equipment ICT Platform

  • Can I charge my EV at home ? We already have 2M connections


    Typical charge rate available 3kwh

    This should be sufficient for most batteries on an overnight charge.

    So the answer is Yesbut with limitations

    Battery Technology rapidly improving

    Higher capacity batteries with shorter charging times

    Increased demand for three phase charging

    Battery Capacity kWh











    G Wiz SMARTFor two

    Volt BYD F6 A classEV

    Mini E

    Battery Capacity kWh

  • So whats 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 thats all part of the normal management of the network.

  • I forgot to charge my car at home On street

    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 charge points.

    Opportunity for a flexible arrangement for options of single/three phase and varying capacities .

  • How would Networks do this

    Network Pillar

    LV cable in street

    Charge pointsCharge points

  • Technical Implications to considerLow 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.

  • Car parks 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

    Flexibility 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 market participants.

    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 Equipment Charging regimes Communication protocols

    Government policies in relation to EV.

  • Networks Summary 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.

  • Thank you

  • Backup slides

  • What range does this give me, This depends on size , usage and battery

    tech but typically,

    Peugeot Expert Van 4km/kwh Sedan/Mini E 6km/kwh Mit. MIEV 10km/kwh

  • Pictures Equipment

    Installed minipillar Charge points

    Typical locations Fitzwilliam Merrion Sq South

    Car Tesla