Call centre energy suppliers, tariffs and costs

Call centres are integral to customer service operations for many industries, and their energy needs are unique due to their operational nature. These businesses often operate over extended hours, sometimes even 24/7, to accommodate different time zones and customer demands. As a result, energy efficiency and cost management become crucial. With numerous computers, servers, and phone systems in continuous use, understanding energy consumption patterns and finding competitive energy tariffs can significantly impact a call centre's bottom line. Ensuring a reliable and cost-effective energy supply helps maintain uninterrupted service, which is vital for customer satisfaction and operational efficiency.

How much does energy cost for a call centre?

There is no published price list for call centres. What a call centre pays depends on how much it uses in a year, when it agreed its contract and for how long, wholesale prices at that time, the standing charge, meter type, payment method and credit history. The most recent government figures, for the second quarter of 2026 (April to June, provisional), put the average price paid by UK non-domestic customers at 24.51p per kWh for electricity and 5.28p per kWh for gas, including the Climate Change Levy and standing charges and excluding VAT. A year earlier the averages were 24.03p and 5.31p. Smaller users typically pay more per unit: businesses using under 20,000 kWh of electricity a year averaged 38.36p per kWh, and those using under 278,000 kWh of gas averaged 9.31p per kWh.

Source: Department for Energy Security and Net Zero, Prices of fuels purchased by non-domestic consumers in the UK (Quarterly Energy Prices tables 3.4.1 and 3.4.2), published 29 September 2026. Q2 2026 figures are provisional; next update 17 December 2026. Prices are fully delivered averages including the Climate Change Levy and all other elements except VAT, so standing charges are already spread across the units. Averages across every UK business in a band, not quotes, and not comparable with a supplier’s unit rate.

Working out a monthly figure for your business

Take the annual kWh from your latest bill or annual statement, find the band above and multiply for a rough benchmark. A site using 15,000 kWh of electricity a year sits in the very small band: 15,000 × 38.36p is about £5,750 a year, or roughly £480 a month before VAT. A site using 60,000 kWh of gas a year: 60,000 × 9.31p is about £5,590 a year, or roughly £465 a month. The bands are statistical groupings used by the government, not supplier price breaks, so treat them as a guide to what similar-sized sites paid rather than a price you will be offered. To judge an actual quote, compare its total annual cost (unit rate × your annual kWh, plus the daily standing charge × 365) with what you pay now.

VAT and the Climate Change Levy on business energy

The prices above exclude VAT. Business energy normally carries VAT at 20% plus the Climate Change Levy (CCL). HMRC applies the 5% reduced rate, with no CCL, in three cases. First, low usage: supplies averaging no more than 33 kWh of electricity a day (1,000 kWh a month) or 145 kWh of gas a day (4,397 kWh a month) are treated as domestic use whoever the customer is. Second, fuel and power for domestic use, which HMRC defines to include homes providing care for the elderly or disabled, children’s homes, hospices and school or university residential accommodation. Third, a charity’s non-business activities. From 1 October 2026 to 31 March 2027, electricity that qualifies for the reduced rate is charged at 0% VAT instead of 5% in England, Scotland and Wales; qualifying gas stays at 5%, qualifying electricity in Northern Ireland stays at 5%, and electricity returns to 5% from 1 April 2027. HMRC has not changed which supplies qualify or the certificate process; the same rules decide whether a supply gets 0% or 20%. Where a site is mixed, 60% or more qualifying use means the whole supply gets the reduced rate; below that the supply is split between the two rates, and the customer gives the supplier a certificate declaring the qualifying percentage. Source: HMRC VAT Notice 701/19 (sections 2.8, 3.2 to 3.5, 4.2 and 5.2, updated 5 February 2025), gov.uk VAT rates and HMRC Revenue and Customs Brief 10 (2026).

Do Ofgem’s microbusiness protections apply to call centres?

Ofgem treats a business as a microbusiness if it has fewer than 10 employees (or their full-time equivalent) and an annual turnover or balance sheet total of no more than £2 million, or if it uses no more than 100,000 kWh of electricity or 293,000 kWh of gas a year. A business can be a microbusiness for one fuel and not the other. Independent call centres that meet either test are covered by Ofgem’s microbusiness rules, which give extra protections around contract terms and renewals (Ofgem: get energy for your business).

Do business energy rates vary by region?

Yes. Part of every unit rate covers the cost of the local electricity distribution network, and Great Britain has 14 licensed distribution areas each with its own charges, so identical contracts are priced differently in, for example, the north of Scotland and London. DESNZ does not publish non-domestic prices by region, so regional figures quoted elsewhere are supplier or broker estimates rather than official statistics.

Which energy supplier is best for call centres?

There is no single answer. Suppliers price business contracts individually rather than publishing standard tariffs for call centres, so the cheapest supplier for one business is often not the cheapest for the next: each prices on the consumption, meter type, contract length and credit profile in front of it. Compare the total annual cost of like-for-like contract lengths rather than the headline unit rate, and check the standing charge and what happens when the contract ends before signing.

How call centres use energy

Call centres typically have a high energy demand due to the extensive use of technology and extended operational hours. Energy consumption is driven by the need for computers, telecommunication systems, lighting, and climate control to ensure a comfortable working environment. The energy usage pattern also reflects variations in call volumes, which can peak during specific hours depending on the nature of the business. Efficient energy management is crucial to manage costs effectively and support sustainability goals.

What affects energy bills for call centres

Several factors can influence the energy costs for call centres:

• Operational hours: Longer hours increase energy consumption.
• Equipment efficiency: Older or inefficient equipment can use more energy.
• Climate control: Heating and cooling systems can significantly impact energy bills.
• Location: Regional differences in energy tariffs.
• Supplier contracts: The terms of your energy agreement can affect costs.

How to compare tariffs

When comparing energy tariffs for a call centre, consider the following checklist:

• Review your current energy usage and patterns.
• Identify peak operational hours and corresponding energy needs.
• Check for tariffs that offer flexibility for high-demand periods.
• Consider fixed vs variable rate tariffs based on cost predictability.
• Ensure the supplier offers strong customer support and reliability.

Gas or electricity: what matters most

For call centres, electricity is typically the primary energy source due to the reliance on electronic devices and IT infrastructure. Gas may be used for heating in some cases, but its role is generally secondary. Therefore, focusing on electricity efficiency and management can yield more significant operational benefits and improved cost management.

How switching works

The process of switching energy providers for a call centre involves several steps:

1. Review your current energy contract to understand terms and notice periods.
2. Compare tariffs from different suppliers to find the best fit for your needs.
3. Contact the new supplier to initiate the switch and provide necessary details.
4. Ensure both old and new suppliers coordinate the switch to avoid disruptions.
5. Confirm the switch date and monitor your first bill to ensure accuracy.

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