The amount of money an electrician makes over a year depends on several factors. These include the number of hours, the nature of work (commercial or domestic) and amount of experience.
Newly qualified, fresh electricians earn between £19,000 and £22,000 a year. Having said that, there is a chance that electricians on certain occasions make over £100,000. This was especially true during 2017 as reported by The Daily Mail. Because of a chronic shortage of skilled workers across the country, a lot of electricians were earning close to £3,000 a week which amounts to £156,000 a year.
Certain jobs can also bring in thousands. For example, a full house or commercial rewire can mean thousands in profit. Decent money could also be made on an underfloor heating installation.
A real life example is of two electricians I know of. They quoted just over £1000 for an underfloor heating installation system to be installed in a residential property. The installation took one day (around 8 hours), material and other costs was round £600. So they made a decent profit of just over £400.
Electricians can also make decent money on emergency call outs. Anywhere from £150 to £300 per hour. A few of these a week, along with other jobs, can set an electrician on the path to make over £100,000 per year.