Stories from the Road
A current client had 10 EVSE (electrical vehicle supply equipment) units installed but had no feasibility study completed. The installation of the units was to a good standard, but it was realised after the installation that there was no capacity on the current system. This resulted in only two of the 10 units being energised. For the remaining eight units to be powered the client needs to reduce their consumption by a large amount or increase the demand from the grid. Both options are very costly and could have been avoided if correct planning was carried out.
A design and build project installed five EVSE (electrical vehicle supply equipment) units at a new distribution warehouse, but never terminated them. This was due to them not being on the original design, and the capacity of the system would be overloaded if they were installed. The five units helped the installation company hit a Net Zero target and were added to the UKs total figure, but the EVSE could never be used. The units still sit in a car park not connected to the system. The SWA cables are cut short and buried in gravel.
A company supplied and installed 60 EVSE (electrical vehicle supply equipment) units at a well know theme park. They sold the client dynamic load balancing as they had a 200-amp supply that could be utilised. This means that 200 amps is shared between the units rated at 32 amps each. As this is a busy theme park all units are used most of the time. The load balancing provides just 30% of the required current (10 amps) and therefore increases the charging time by 200%! This means if an electric vehicle required full charge, the customer could never achieve this with the time spent at the theme park.
A company installed 10 EVSE (electrical vehicle supply equipment) units and added the additional consumption to their system. The client was aware it had the capacity due to the rating of their transformer (500KVA). The issue was the energy distributor (DNO) only provided 300KVA worth of power. When the company went over this amount the DNO charged them an inflated rate for the power. This resulted in a large monthly increase on their energy bill.