A professional way to refer to a power cut is to use the term "power outage". This term is widely understood and conveys the meaning clearly without sounding informal.
Here are some other professional alternatives you can use:
- "Interruption of power supply"
- "Electricity disruption"
- "Power failure"
These terms are more formal and technical, but they are still appropriate in professional settings.
Examples:
- "We experienced a power outage at our headquarters this morning."
- "The interruption of power supply caused a delay in our production process."
- "The power failure was caused by a fault in the electrical grid."
Ultimately, the best way to refer to a power cut in a professional setting depends on the context and your audience.