if you have a smart meter with the unit that plugs into a socket and has a small screen like the picture for reference
(loads of different ones out there now) remember these use power as well depending on your tariffs it was about £3 a year before the cost of living crisis struck, These are good at showing you how much an appliance is using. to help you budget,
basic rule of thumb also is anything with a heating element is what uses the most electric
Use these tables to help you understand how much money your appliances are costing to use and which are costing you the most money.
www.consumercouncil.org.uk
i.e. a 8.5kw electric shower cost about 50p to 70p to have a shower each day depending on your tariff,
so if we say for example 70p x 7days that £4.90 plus vat 5% plus your standing charge say 55p, at £3.85 that = £9.18 for the week just for a shower for 1 person
your bill should show you your kw price and your daily standing charge ,
IE, 37pkw so a 3kw kettle (some kettles are less ) so if you boiled a kettle for an hour (i know roughly 5mins to boil a kettle) that £1.11 for 1 hour, just a few examples to try and help explain, it all depends on your tariff and what you are using day and night,