No, an intermediate meter (also known as a mid meter) is not mandatory for charging an electric car at home. An intermediate meter is an additional meter that can be installed to separately measure the electricity consumption for charging the electric car. This can be useful for tracking energy usage and allocating costs.

However, the use of an intermediate meter depends on personal preference and circumstances. Some people find it convenient to have an intermediate meter to specifically monitor the energy consumption for car charging and to calculate costs more accurately. It can also be useful if you want to share costs with others, such as settling electricity costs with housemates or reimbursing costs to visitors using your charging station.

If you choose to have an intermediate meter installed, it is advisable to contact a professional electrician. They can advise you on the options, installation requirements, and costs. It is also important to check if there are any regulations or rules from your energy supplier or grid operator regarding the use of an intermediate meter.

However, it is possible to measure energy consumption for charging your electric car using the main meter in your electricity connection. You can record the total energy consumption before you start charging and after charging, and calculate the difference to estimate the consumption and costs for charging your car.