- A mandatory random delay of up to 10 minutes and throttling could reduce the amount of charge received at home mainly during peak times
- There are non-smart and non-compliant but legal EVSEs available
Another few more days to go before the OZEV grant ends for homeowners in single-unit properties. Those that managed to beat this deadline has to think about an upcoming regulation called The Electric Vehicles (Smart Charge Points) Regulations.
EV owners with a home Electric Vehicle Supply Equipment (EVSE) are used to doing two things:
- Charge whenever they want, even during peak hours
- Charge at midnight or at an exact time based on their EV tariff (Like Octopus Go)
This behaviour causes a few problems to our grid infrastructure.
- Stability - If large numbers of EVs start or stop charging simultaneously, this can create sudden spikes or drops in electricity demand that could cause issues with balancing the electricity system.
- Cyber and data security - As we transition to a smart, flexible energy system, increasing numbers of energy-smart appliances - including CPs - will increase the risk of cyber-attack. The internet-connected nature of these devices is likely to make them more vulnerable to threat actors, and hackers could use the individual devices or their control systems to destabilise the electricity system.
Introducing Smart Charging
Smart charging can delay or modulate charging in response to the demand, and the delay introduced must be random up to 10 minutes. This flexible form of charging can reduce or defer costly investment in additional electricity generation capacity and network reinforcement.
In addition to grid protection, the government believes that smart charging could also offer personalised default settings, data security, and supplier interoperability. Increased regulation could inadvertently limit the number of manufacturers and models of EVSE to a handful of major players such as Pod Point or BP Pulse.
The mandatory requirements from the regulations offer a net benefit to the wider EV community and the infrastructure. However, there are a few ways to escape the rules for some time. The EVSE must be internet-connected for the smart features to work just like a smart television. One could also use EVSE without smart charging capability such as Tesla Wall Connector.
Tesla Wall Connector
Products such as Tesla Wall Connector do not comply with Smart Charge Points Regulations but are legal.
Remember that non-compliant products might lack certain safety features, such as PEN fault and RCD protection.
The random delay mandate exemption applies for EV chargers signed up to provide Demand Side Response.