Electricity price per kWh explained

Understanding your electricity bill can often feel complex, with various charges and fluctuating rates. This guide aims to demystify UK residential electricity pricing per kilowatt-hour (kWh), explain the factors influencing it, and provide actionable advice on how to compare tariffs and manage your household energy costs.

Taking control of your energy costs means understanding your usage and actively comparing tariffs. Fuse Energy offers clear pricing and tools to help you manage your household energy. Click here to switch to Fuse Energy today.

Understanding your electricity bill: kWh and beyond

Your electricity bill is more than just a total figure; it is a breakdown of how much energy you have used and the costs associated with delivering it to your home. Knowing these components is the first step towards taking control of your energy spending.

What is a kilowatt-hour (kWh)?

A kilowatt-hour (kWh) is the standard unit of energy measurement used on your electricity bill. It represents the amount of energy consumed by a 1,000-watt appliance running for one hour. For example, a 100-watt light Bulb left on for 10 hours uses 1 kWh of electricity. The average UK household uses around 2,700 kWh of electricity per year, which equates to roughly 7.5 kWh per day.

Unit rates vs standing charges

Electricity bills in the UK typically consist of two main charges:

• Unit rate: This is the cost per kilowatt-hour (kWh) of electricity you consume. It is usually expressed in pence per kWh (p/kWh). The more electricity you use, the higher this part of your bill will be.
• Daily standing charge: This is a fixed daily charge that covers the costs of supplying electricity to your property, regardless of how much energy you use. It includes costs for maintaining the grid and other operational expenses.

Key factors influencing electricity prices

The price you pay for electricity per kWh is influenced by a range of factors, from global markets to local infrastructure. Understanding these can help you make sense of your bill.

Wholesale energy costs

The cost of electricity is heavily influenced by wholesale energy prices, which is what suppliers pay for the electricity itself. These prices fluctuate based on global supply and demand, geopolitical events, and the cost of fuels like natural gas. Wholesale energy costs are a significant component of the final electricity price.

Network charges and operating costs

A portion of your bill covers the cost of maintaining and upgrading the electricity network - the pylons, cables, and substations that deliver power to your home. These network charges vary by region. Suppliers also factor in their own operating costs, such as customer service and billing, into the price per kWh.

Government levies and schemes

Various government levies and environmental schemes are included in your electricity price. These support renewable energy generation, help vulnerable customers, and fund energy efficiency initiatives.

Regional variations

Electricity prices can vary across different regions of the UK. These regional differences are primarily due to variations in network costs, as the infrastructure required to deliver electricity can be more expensive to maintain in certain areas.

The energy price cap and its impact

Ofgem, the energy regulator in Great Britain, plays a crucial role in regulating electricity prices through the energy price cap1.

How the price cap works

The energy price cap sets a maximum unit rate and standing charge that suppliers can charge for their standard variable tariffs. It is reviewed quarterly and aims to protect consumers from sudden and excessive price increases. It is important to note that the cap limits the unit rate and standing charge, not the total bill. Your final bill will still depend on how much electricity you use. You can learn more about this in our blog on the energy price cap explained.

Impact on standard variable tariffs

Most households on a Standard Variable Tariff are subject to the energy price cap. This means that while prices can still change, they cannot exceed the cap's limits. For those on fixed-rate tariffs, the cap does not directly apply, as their unit rates are locked in for the duration of their contract.

Types of electricity tariffs

Choosing the right tariff can significantly impact your electricity costs. Here's a look at the main types available.

Fixed-rate tariffs

With a fixed-rate tariff, your unit rate and standing charge remain constant for a set period, usually between 12 and 18 months. This offers predictability and protection against price rises, but you might miss out if wholesale prices fall. Fixed tariffs may also come with exit fees if you switch before the contract ends.

Variable-rate tariffs

Standard variable tariffs have unit rates and standing charges that can change, usually in line with the energy price cap. These offer flexibility as there are typically no exit fees, but your bills can fluctuate more. For a detailed comparison, read our article on fixed vs variable energy tariffs.

Time-of-use tariffs

Time-of-use tariffs charge different rates for electricity depending on the time of day. For example, electricity might be cheaper during off-peak hours (e.g., overnight) and more expensive during peak times. These tariffs can be beneficial if you can shift a significant portion of your electricity consumption to off-peak periods.

Comparing electricity tariffs and saving money

Taking control of your energy costs involves understanding your usage and actively comparing tariffs.

Using comparison websites

Energy comparison websites allow you to input your postcode and current usage to see available tariffs from various suppliers. This is an effective way to find the best deals tailored to your consumption habits.

Understanding your usage

Knowing how much electricity you use is key to finding the most suitable tariff. The average UK home uses around 2,700 kWh of electricity per year, but your actual usage might be higher or lower depending on your home's size, insulation, and appliance use. Regularly checking your meter readings or using a smart meter can help you track your consumption accurately. For more information, see our guide on understanding your energy bill.

Tips for reducing consumption

Even small changes can make a difference. Consider switching off lights and appliances when not in use, upgrading to energy-efficient models, and optimising your heating and cooling. These actions can reduce your overall kWh consumption, leading to lower bills.

The future of electricity pricing

The energy landscape is evolving rapidly, with new technologies and approaches set to transform how electricity is priced and consumed.

Smart technology and dynamic pricing

The rollout of smart meters is paving the way for more dynamic pricing models. These could include tariffs that change in real-time based on grid demand and renewable energy availability. This allows consumers to make "power plays" with their energy usage, leveraging periods of abundance for cheaper rates.

The shift towards abundant energy

At Fuse, we believe in a future with power to play with - energy so abundant it stops being a thing you think about. By rebuilding the energy system from the ground up, focusing on delivering the cheapest, cleanest energy possible, we aim to shift the balance of power into the customer's hands. Understanding how electricity is priced today is the first step towards navigating and benefiting from this empowered future.

Managing your household energy bills should be clear and easy. Fuse Energy focuses on straightforward pricing, so you can see exactly what you're paying without unnecessary complexity. If you have a smart meter, you can view detailed usage data through the app or website, helping you understand how you can lower your bills. If you don't have a smart meter, Fuse Energy can upgrade your non-smart meter, completely for free. Our 24/7 human support team is always on hand with fast response times whenever you need help. Click here to switch to Fuse Energy today. Find out about our mission by clicking here.

References

1. Ofgem. Ofgem's energy price cap explained.