What is the standing charge on an energy bill UK?

The standing charge is a fixed daily amount you pay regardless of how much energy you use. It covers the cost of maintaining the energy network, meters, and supplier services. Typically 25-55p/day for electricity and 25-35p/day for gas. That's £180-£330/year before you use any energy.

How is energy usage calculated UK?

Usage is measured in kilowatt-hours (kWh). Your meter records how many kWh you've used. Multiply by the unit rate (e.g., 24p/kWh) for the cost. Gas meters show cubic metres or feet, which is converted to kWh using a formula. Smart meters send automatic readings; otherwise, you submit readings.

Why is my energy bill estimated?

If you don't have a smart meter and haven't submitted readings, your supplier estimates based on previous usage or house type. Estimates are often wrong — submit regular readings to pay for what you actually use. You'll be billed for the difference when actual readings are taken.

What uses the most electricity in a home UK?

Biggest users: heating (if electric) 40-60%, hot water (if electric) 15-25%, appliances (washer, dryer, dishwasher) 15-20%, cooking 5-10%, lighting 5-10%, entertainment (TVs, consoles) 5-10%. Tumble dryers, electric showers, and space heaters are particularly expensive to run.

Understanding Your Energy Bill UK — Complete Guide | PocketWise

If you are comparing tariffs, switching options, and bill-control tactics, start with the Energy Bills and Switching Hub for the full decision framework.

Energy bills can be confusing. Here’s how to understand exactly what you’re paying for.

Read more: See our Energy Grants guide for a complete overview of this topic.

Reading Your Bill

Key Information

Section	What It Shows
Account details	Your customer number, address
Billing period	Dates the bill covers
Meter readings	Start and end readings
Energy used	In kWh
Charges	Breaking down costs
Amount due	Total to pay
Payment date	When it’s due

Types of Bill

Type	Details
Actual	Based on real meter readings
Estimated	Based on projected usage
Smart meter	Automatic accurate readings
Final	When leaving property/supplier

Charges Explained

Standing Charge

Feature	Details
What it is	Fixed daily charge
Why you pay it	Network, meter, supplier costs
Typical (electricity)	40-55p/day
Typical (gas)	25-35p/day
Annual cost	£240-£330 (both fuels)

Unit Rate

Feature	Details
What it is	Cost per kWh used
Typical (electricity)	22-28p/kWh
Typical (gas)	5-8p/kWh
Why different	Electricity is more expensive

Example Bill Calculation

Component	Calculation	Cost
Electricity standing charge	91 days × 50p	£45.50
Electricity units	720 kWh × 25p	£180.00
Gas standing charge	91 days × 30p	£27.30
Gas units	3,000 kWh × 6p	£180.00
VAT (5%)	On total	£21.64
Quarterly total	—	£454.44

Understanding Usage

Kilowatt-Hours (kWh)

Term	Meaning
kWh	Unit of energy (1,000 watts for 1 hour)
Example	1kW heater on for 1 hour = 1 kWh
Your tariff	Charges per kWh

Gas Measurement

Meter Shows	Conversion
Cubic metres	× 11.2 (approx) = kWh
Cubic feet	× 31.7 (approx) = kWh
Calorific value	Supplier applies exact conversion

Typical Annual Usage

Household	Electricity	Gas
Low (1-2 people)	1,800 kWh	8,000 kWh
Medium (2-3 people)	2,900 kWh	12,000 kWh
High (4+ people)	4,300 kWh	17,000 kWh

Estimated vs Actual Bills

Why Bills Are Estimated

Reason	Details
No smart meter	Can’t read automatically
No reading submitted	Supplier guesses
Couldn’t access meter	Reader couldn’t get in

Problems with Estimates

Issue	Impact
Overestimate	Pay too much, credit builds
Underestimate	Build up debt, catch-up bill
Inaccurate	Never know true usage

Getting Accurate Bills

Solution	How
Smart meter	Automatic readings
Submit monthly readings	Via app, website, phone
Let meter readers in	When they visit
Read on bill date	More accurate bills

Smart Meters

Benefits

Feature	Benefit
Automatic readings	Always accurate bills
In-home display	See usage in real-time
Time-of-use tariffs	Cheaper off-peak rates
No estimates	Pay for what you use
Easier switching	Readings transfer

Types

Type	Details
SMETS1	Older, may lose smart function if you switch
SMETS2	Newer, works with any supplier

What Uses Energy

Electricity Costs

Appliance	Power	Cost per Hour
Electric heater	2kW	50p
Tumble dryer	2.5kW	62p
Electric shower	8-10kW	£2-£2.50
Oven	2kW	50p
Washing machine	0.5-2kW	12-50p
Fridge-freezer	0.1kW	2.5p
TV	0.1kW	2.5p
LED bulb	0.01kW	0.25p

Most Expensive to Run

Appliance	Annual Cost (Typical Use)
Electric heating	£500-£1,500+
Hot water (immersion)	£400-£800
Tumble dryer	£100-£200
Electric oven	£80-£150
Washing machine	£50-£100
Fridge-freezer	£50-£80
Dishwasher	£50-£80

Gas Costs

Use	Typical Annual Cost
Central heating	£600-£1,200
Hot water	£150-£300
Gas cooking	£30-£60

Checking Your Bill

Red Flags

Warning Sign	What to Check
Unusually high	Compare to previous bills
Usage jumped	No lifestyle change? Query
Estimate very different from reading	Submit actual reading
Standing charge wrong	Check against price cap rates
Unit rate wrong	Check against your tariff

How to Check

Step	Action
1	Check readings match your meter
2	Verify unit rates are correct
3	Check standing charge is right
4	Compare to previous period
5	Calculate yourself if needed

If Bill Is Wrong

Action	How
Contact supplier	Call, app, or online
Provide meter reading	If estimated incorrectly
Request itemised bill	If charges unclear
Complain formally	If not resolved
Energy Ombudsman	After 8 weeks of complaint

Payment Options

How to Pay

Method	Details
Direct debit	Fixed monthly amount, sometimes discounted
Variable DD	Pay actual amount monthly
Quarterly	Pay whole bill when due
Prepayment	Pay in advance

Direct Debit Tips

Tip	Benefit
Review annually	Check amount is right
Build up credit	In summer for winter bills
Check statements	Ensure DD collected correctly
Request refund	If too much credit builds

Summary: Bill Understanding Checklist

Key Numbers to Know

Term	Meaning
Unit rate	What you pay per kWh
Standing charge	Fixed daily charge
kWh	Unit of energy used
Bill date	When payments due

Regular Actions

Action	Frequency
Submit meter reading	Monthly
Check bill	Every bill
Review direct debit	Annually
Compare tariff	When deal ends

Saving Money

Action	Impact
Submit readings	Accurate bills
Use off-peak	If time-of-use tariff
Reduce usage	Direct savings
Get smart meter	Better control
Check for errors	Query wrong bills

Key Contacts

Need	Contact
Bill query	Your supplier
Complaint not resolved	Energy Ombudsman
Switching advice	Citizens Advice
Can’t afford bill	Speak to supplier about help

Understanding your bill helps you spot errors and take control of your energy costs. Submit regular readings, check charges are correct, and query anything that doesn’t look right.

Understanding Your Energy Bill UK — Complete Guide

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