About Course
How much does it cost to boil a kettle, run a heater or leave lights on? This course teaches the maths behind energy use: converting watts to kilowatts, calculating kilowatt-hours, and working out running costs using the October–December 2026 price cap rates, with practical comparisons to help you save money.
Tutwoo is an independent learning provider. This is a general skills course designed to support everyday and workplace English and maths, with reference to the Department for Education’s Functional Skills subject content. It is not an accredited qualification.
© 2026 Tutwoo UK Limited. This course was created in-house by Tutwoo and is our original work. It is for your own learning only: please do not copy, share, record or resell it.
Course Content
Course Lessons
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Watts, kilowatts and kilowatt-hours
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Working out running costs
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Comparing appliances and estimating savings
Sources & Further Reading
Final Assessment
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