No, there will be no interruption to your electricity supply when you sign a new contract or switch retailers, as all these changes are purely administrative. Rest assured, you will continue to enjoy the same quality of electricity supply.
Electricity generated is delivered to consumers through the national power grid, operated by SP Group (via its member SP PowerGrid). Electricity retailers and SP Group (via its member SP Services) buy electricity in bulk from the wholesale electricity market to supply to consumers.
While consumers may engage different electricity retailers, the electricity supply will remain reliable and stable as SP Group will continue to operate the national power grid and deliver electricity to consumers.