
A standard tariff for electricity, also known as a standard variable tariff (SVT) or standard variable rate tariff, is an energy supplier's default tariff. This is a basic, variable rate plan that an energy supplier offers to its customers. Standard variable tariffs are usually the most expensive option because the unit rate prices can change at any time, depending on the wholesale energy prices. However, the energy price cap set by Ofgem limits the maximum amount that can be charged for standard tariffs. Standard tariffs are often chosen by customers who have never switched suppliers or those who have not actively chosen a specific plan.
| Characteristics | Values |
|---|---|
| Type | Standard variable tariff (SVT) or standard energy tariff |
| Description | An energy supplier's default tariff |
| Price | Usually the most expensive tariff, but with the current energy crisis, this might not be the case |
| Price cap | Yes, by Ofgem |
| Price fluctuation | Yes, prices can go up or down |
| Exit fee | No |
| Examples | Economy 7, green tariff |
| Other | If you have storage heaters or charge an electric vehicle overnight, a time of use tariff could work out cheaper |
| Average residential electricity rate in the U.S. | 17.45 cents per kilowatt-hour (kWh) |
| Average commercial electricity rate in Texas | 9 cents per kWh |
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What You'll Learn
- Standard variable tariffs are usually the most expensive option
- Fixed tariffs provide a guaranteed rate per unit of energy
- Green tariffs are more expensive but use renewable energy
- Time-of-use tariffs charge different rates at different times of the day
- Energy prices are influenced by global events and wholesale energy prices

Standard variable tariffs are usually the most expensive option
A standard variable tariff (SVT), also known as a standard energy tariff or standard variable rate tariff, is an energy supplier's default tariff. Standard variable tariffs are usually the most expensive option because suppliers can change the unit rate prices at any time, alongside wholesale energy prices. However, this might not be the case in the current market due to the energy crisis.
The unit rate costs of standard variable tariffs can go up or down at any time, and more often than not, they will go up. This is because standard variable tariffs reflect what your supplier pays to buy energy in the first place (wholesale energy prices). When fixed tariffs are high, an SVT can be useful because the energy price cap puts a limit on the maximum you can be charged. Ofgem reviews and updates the price cap level every three months.
If you have never switched energy suppliers, you are probably on your supplier's SVT. This can also happen if your fixed tariff plan has expired and you haven't switched to a new plan. You can check if you are on an SVT by checking your bill or contacting your supplier. Different suppliers call their SVTs different names, such as 'default' or 'standard' tariffs, so it is worth double-checking.
Standard variable tariffs do not have an exit fee, so you are free to switch to a new deal without facing a penalty at any time. Comparing and switching energy suppliers only takes a few minutes, and you will be notified of the date your gas and/or electricity supply will be switched.
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Fixed tariffs provide a guaranteed rate per unit of energy
An energy tariff is how energy providers charge a customer for the electricity and gas they use. An energy tariff is made up of two costs: the unit rate and the standing charge. The unit rate is the price you pay for your electricity and gas, charged at pence per kilowatt hour (p/kWh). The standing charge is a fixed daily cost for supplying energy to your home, regardless of usage.
Standard variable tariffs (SVTs), on the other hand, are the default tariffs of energy suppliers. With an SVT, the unit rate prices can change at any time alongside wholesale energy prices, resulting in variable energy prices. However, the energy price cap set by Ofgem, the UK's energy regulator, limits the maximum charge for SVTs. In a rising market, fixed tariffs provide protection against rising prices, but in a falling market, customers on fixed tariffs won't benefit from reduced energy costs.
When choosing between fixed and standard variable tariffs, it's important to consider the benefits of each. Fixed tariffs offer the security of a consistent price per unit of energy, while standard variable tariffs provide more flexibility, as there is no contractual end date, and prices may decrease if the market changes. Switching energy suppliers or tariffs is a straightforward process, and customers can use price comparison tools to find the best deal for their needs.
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Green tariffs are more expensive but use renewable energy
A standard variable tariff (SVT), also known as a standard energy tariff, is an energy supplier's default tariff. Standard variable tariffs mean that your energy prices could fluctuate, going up or down. SVTs are usually the most expensive gas and electricity tariffs because suppliers can change the unit rate prices at any time alongside wholesale energy prices. However, the energy price cap does put a limit on the maximum that can be charged, so when fixed tariffs are high, an SVT can be useful.
Green tariffs are a type of tariff that can be chosen by consumers. These tariffs are more expensive as it costs more to supply renewable energy. However, consumers who opt for a green tariff can help the environment in other ways. Many firms, for example, invest in renewable energy projects such as wind farms, helping to clean up the energy supply in the UK. Green tariff programs can be an important addition to a large organisation's energy portfolio, but they are only offered in regulated energy markets and must be undertaken as a contract with the local utility.
When an organisation enters a green tariff agreement, it pays a fixed rate to the utility for electricity generated by a local renewable energy project and receives associated renewable energy certificates (RECs) plus a credit on its bill. This means it is less susceptible to the unpredictability of traditional fossil fuel-based power prices.
There are several green energy tariffs on the market, and they are all available from smaller suppliers such as Good Energy and Bulb. None of the big six utility firms currently offers a green energy deal. If you want a green tariff that uses 100% renewable energy, you should check the wording of the contract carefully. Some 'green' or 'renewable' tariffs might not contain any or all renewable energy. Instead, some suppliers say money from the tariff will be invested in renewable energy sources.
Fixed tariffs work by locking in the price you pay per unit of energy used for a specified period, usually a year. So while your fixed green tariff may not be the absolute cheapest fixed tariff on the market, it still offers the prospect of a price reduction if you are on a conventional standard tariff.
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Time-of-use tariffs charge different rates at different times of the day
A standard variable tariff (SVT), also known as a standard energy tariff, is an energy supplier's default tariff. SVTs are usually the most expensive gas and electricity tariffs because suppliers can change the unit rate prices at any time. However, the energy price cap put in place by Ofgem does limit the maximum that can be charged, so when fixed tariffs are high, an SVT can be useful.
Time-of-use tariffs, sometimes called multi-rate tariffs, charge different rates at different times of the day. Energy companies charge less for off-peak or night rates because there is less demand for energy. They make it cheaper to encourage users to use energy when others aren't. The number of off-peak hours included in a time-of-use tariff is usually indicated by the tariff's name, e.g., Economy 7 includes 7 hours of off-peak rates per 24 hours.
Time-of-use tariffs are often split into peak, shoulder, and off-peak periods. Peak rates are when electricity costs the most, while shoulder rates are slightly cheaper and usually apply between peak and off-peak periods. Some energy companies have even more time periods than these three. Retailers will inform users of the start and end times of the different periods for their time-of-use plan.
To get a time-of-use tariff plan, a meter that measures electricity usage at different times of the day is typically required. Controlled load tariffs are a type of time-of-use tariff that applies only to specific appliances, connected to a separate meter circuit. The circuit is controlled so that the appliance can only be used at certain times of the day, usually off-peak periods. Controlled load tariffs are often used for electric hot water systems, pool pumps, or underfloor heating.
Seasonal time-of-use tariffs have different rates and periods at different times of the year, reflecting seasonal peak periods on the grid. Demand charges can also be added to a time-of-use tariff, which are based on the highest amount of power drawn from the grid at any time, i.e., when many appliances are running simultaneously.
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Energy prices are influenced by global events and wholesale energy prices
A standard variable tariff (SVT), sometimes called a standard energy tariff, is an energy supplier's default tariff. It is usually the most expensive option for gas and electricity as the unit rate prices can change at any time, including in response to wholesale energy prices.
Oil remains a critical energy source worldwide, and it is highly impacted by geopolitical events. Oil reserves are often concentrated in politically volatile regions, making oil prices vulnerable to instability. The Organisation of the Petroleum Exporting Countries (OPEC) can influence global oil supply by increasing or decreasing production, which directly affects oil prices.
Government interventions, such as subsidies for fossil fuels or renewable energy incentives, can also drive the supply and demand for energy, impacting prices. While subsidies can keep energy prices low domestically, they can increase global demand and influence international energy prices. Additionally, renewable energy policies can lead to short-term market volatility and impact prices globally.
Wholesale energy prices are determined by complex supply and demand dynamics, influenced by factors such as government regulations and the current geopolitical situation. Wholesale markets are operated by a central market operator or exchange, with each country having its own national gas and electricity hub. The wholesale energy market allows generators and producers to trade electricity and gas with suppliers or retailers, who then supply energy to consumers.
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Frequently asked questions
A standard tariff for electricity, also known as a standard variable rate tariff, is an energy supplier's default tariff. This is the tariff that any new customer who does not request a specific plan will be placed on.
The name of the plan might include the word "standard", but this is not always the case. You can check your bill or contact your supplier to find out.
Standard tariffs are usually the most expensive option. This is because they are variable tariffs, meaning the unit rate costs can go up or down at any time. However, they are capped by the Ofgem price cap to protect customers from overcharging.
You are free to switch to a new deal at any time without facing a penalty, as standard tariffs do not have an exit fee.
One alternative is a fixed tariff, where the rate per unit of energy is guaranteed and will not go up during the length of your contract. Other options include Economy 7, which offers cheaper off-peak rates, and green tariffs, which use renewable energy sources.























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