Business Electricity Explained: How UK Companies Can Compare Contracts and Control Costs

Electricity is an essential operating cost for almost every UK business. Offices need power for lighting, computers and heating systems, while shops, restaurants, warehouses and industrial premises may depend on electricity for refrigeration, machinery and other equipment.

Yet business electricity works differently from household electricity. Commercial customers generally have contracts based on their individual circumstances, usage and business requirements rather than the domestic price-cap system.

Understanding how commercial electricity contracts work can help business owners make better decisions, particularly when a contract is approaching its end date.

From unit rates and standing charges to contract length and renewal terms, there are several factors worth considering before choosing a new tariff.

What Is Business Electricity?

Business electricity is electricity supplied to a non-domestic property under a commercial energy contract.

This can include premises such as:

• Offices
• Shops
• Restaurants and cafés
• Warehouses
• Hotels
• Workshops
• Factories
• Schools and other organisations
• Multi-site businesses

The amount a business pays depends on factors including electricity consumption, contract type, supplier, location and market conditions.

Ofgem explains that businesses need an appropriate energy contract for the energy they use, with the size and circumstances of the business influencing its energy requirements.

Unlike domestic customers, businesses generally need to negotiate or select a commercial contract that suits their circumstances.

How Much Does Business Electricity Cost?

There is no single price that applies to every UK business.

Two companies operating from similar-sized premises could receive different electricity quotes because their consumption patterns, contract requirements and other circumstances are different.

The main elements to consider are:

Unit rate

The unit rate is the amount charged for each kilowatt-hour (kWh) of electricity consumed.

For a business using a large amount of electricity, even a relatively small difference in the unit rate can have a noticeable effect on annual costs.

Standing charge

A standing charge is a daily charge associated with supplying electricity to the premises.

A tariff with a lower unit rate is not automatically the cheapest option if its standing charge is substantially higher.

Additional charges

Commercial electricity bills can also include costs associated with taxes, government schemes, network charges and other components.

Ofgem explains that business energy costs can include wholesale energy costs, network costs, environmental costs and taxes or government levies.

This is why businesses should compare the overall contract rather than focusing on one figure.

Why Business Electricity Rates Differ Between Companies

A common question from business owners is: “What is a good business electricity rate?”

There is no universal answer.

The rate available to a business can depend on several factors.

Energy consumption

A small office with modest electricity usage has different requirements from a manufacturing site operating machinery throughout the day.

Suppliers may therefore assess businesses according to their expected consumption.

Location

The location of the business can influence the costs associated with supplying electricity, including network-related charges.

Contract length

The length of a contract can affect the available pricing structure.

A business considering a longer fixed-term agreement should understand both the advantages and the conditions attached to the contract.

Meter type

The type of electricity meter installed at the premises can affect how consumption is measured and how suppliers structure contracts.

Some businesses have more complex consumption patterns and may require more tailored commercial arrangements.

Market conditions

Wholesale energy costs can change over time.

Ofgem reported in March 2026 that wholesale energy costs remain volatile and that network costs were increasing as the energy infrastructure is upgraded.

For this reason, historical electricity prices should not automatically be treated as an indication of what a business will be quoted today.

Fixed vs Variable Business Electricity Contracts

One of the most important decisions when comparing commercial electricity is the type of contract.

Fixed-rate electricity contracts

With a fixed-rate contract, the agreed unit price is generally fixed for a specified period.

This can make budgeting easier because the business has greater certainty over the agreed unit rate.

However, a fixed rate does not necessarily mean the entire electricity bill will remain identical. Consumption can still change, and other charges or contractual conditions may apply.

There is also a potential downside if market prices fall after the business has agreed its fixed rate.

Variable electricity contracts

A variable contract allows the price paid for electricity to change according to the relevant pricing arrangement.

This can provide flexibility, but it may also expose the business to greater price movements.

The important point is to understand exactly how the tariff works before signing.

Ofgem identifies fixed-rate and variable contracts among the main types of business energy arrangements.

What Should You Compare When Choosing Business Electricity?

Comparing electricity contracts involves more than finding the lowest advertised rate.

A useful comparison should consider the complete commercial arrangement.

1. Unit rate

Check the price per kWh and make sure you understand whether the quoted rate is fixed or subject to change.

2. Standing charge

Compare the daily standing charge as well as the unit rate.

3. Contract length

A longer contract can provide greater price certainty, but it may also reduce flexibility.

4. Contract end date

Know exactly when your existing agreement ends.

5. Renewal terms

Check whether the contract automatically renews or moves onto another arrangement if you do not act before the end date.

6. Payment terms

Consider whether the supplier requires direct debit, monthly payments or another payment arrangement.

7. Exit conditions

Read the terms relating to leaving the contract early or changing suppliers.

8. Supplier service

Price is important, but poor billing support or slow responses can create unnecessary administrative problems.

Ofgem's 2025 research found that 27% of businesses reported struggling with their energy bills in some way, while businesses that were dissatisfied with suppliers cited issues including unexpected charges, unclear tariff changes and delays in resolving problems.

When Should You Compare Business Electricity?

One of the easiest mistakes is leaving the decision until the existing contract is about to expire.

Business energy contracts can last for several years, and suppliers may not allow a business to switch before its existing contract ends.

Businesses should therefore check their contract well in advance.

Start by finding:

• Current electricity supplier
• Contract end date
• Current unit rate
• Current standing charge
• Annual electricity consumption
• Meter details
• Renewal conditions
• Any notice requirements

Having these details available makes it easier to compare potential alternatives.

It also reduces the risk of making a rushed decision.

What Happens If a Business Does Nothing?

The consequences depend on the terms of the existing agreement.

Ofgem explains that businesses may move onto a deemed contract when they move into premises and use energy before agreeing a contract. A business can also move onto an out-of-contract arrangement or a rollover/evergreen arrangement depending on the supplier's terms.

This is why contract renewal dates should not be ignored.

A business should check what happens when its current agreement ends rather than assuming it will automatically continue on the same terms.

How to Compare Business Electricity Quotes Properly

When you receive multiple commercial electricity quotes, avoid comparing them based on one number.

Instead, create a simple comparison covering:

The objective is to compare like for like.

For example, a three-year fixed contract should not be judged against a flexible arrangement solely by looking at the unit rate.

The contracts carry different levels of pricing certainty and flexibility.

Can a Business Electricity Broker Help?

Businesses do not necessarily have to compare suppliers completely on their own.

A commercial energy broker can help businesses identify available electricity contracts, compare options and understand contract terms.

Ofgem says businesses can set up energy contracts themselves or use a third party such as an energy broker. It also advises businesses to check the broker's experience, fees, supplier relationships, terms and the activities the broker is authorised to carry out.

Using a broker can be particularly useful when:

• The business has multiple premises
• Electricity consumption is relatively high
• The owner has limited time for supplier research
• Contract terms are difficult to understand
• The business also needs gas or other utilities
• A renewal deadline is approaching

However, businesses should always understand how the broker is paid and what suppliers are included in the comparison.

Business Electricity for Small Businesses

Smaller businesses often have fewer resources available for energy procurement.

For example, a small retailer may be focused on customers and stock, while a restaurant owner may be managing staff, suppliers and daily operations.

Energy procurement can therefore become something that gets postponed until the contract is close to ending.

Ofgem's current definitions include specific thresholds for microbusinesses and small businesses, based on factors such as employee numbers, turnover, balance-sheet totals and energy consumption.

Regardless of size, the same principle applies:

Know what you are currently paying before deciding whether to switch.

Reviewing previous bills can reveal consumption patterns and help establish whether a new quote is genuinely competitive.

7 Ways to Reduce Business Electricity Costs

Changing supplier is not the only way to manage electricity expenditure.

1. Monitor consumption

Regularly reviewing electricity usage can help identify unusual increases.

2. Review operating hours

Where possible, avoid unnecessary electricity consumption outside normal operating periods.

3. Upgrade inefficient equipment

Older lighting, refrigeration, heating systems and machinery can consume more electricity than modern alternatives.

4. Use smart controls

Timers, sensors and automated controls can reduce unnecessary usage in suitable premises.

5. Review the tariff regularly

Even if a business is satisfied with its supplier, the contract should be reviewed before renewal.

6. Check bills for errors

Unexpected changes in consumption or charges should be investigated rather than ignored.

7. Compare before renewal

Starting early provides more time to assess alternatives instead of accepting the first available renewal option.

Common Business Electricity Mistakes to Avoid

Looking only at the unit rate

The cheapest unit rate does not necessarily produce the lowest overall cost.

Ignoring the standing charge

A higher daily charge can add up over a full contract period.

Forgetting the contract end date

This can leave businesses with less time to review alternatives.

Assuming domestic rules apply

Business energy contracts operate differently from household energy arrangements.

Signing without reading the terms

Commercial energy agreements can be legally binding, so businesses should understand the contract before agreeing.

Ofgem specifically warns businesses to check contract terms carefully and notes that agreements made over the phone can be legally binding.

Comparing outdated prices

Energy prices change, so old online examples should not be treated as current quotes.

Frequently Asked Questions About Business Electricity

What is business electricity?

Business electricity is electricity supplied to commercial or non-domestic premises under a business energy contract. It can be used by offices, shops, restaurants, warehouses, factories and many other organisations.

Is business electricity cheaper than domestic electricity?

There is no simple answer. Business and domestic electricity contracts are structured differently, and the price available to a business depends on factors such as consumption, contract type, location and market conditions.

How are business electricity rates calculated?

Rates depend on several components, including wholesale energy costs, network costs, environmental costs, taxes and the commercial terms offered by the supplier.

Can I switch business electricity suppliers?

Yes, but the ability to switch depends on the terms and timing of the current contract. Many business contracts prevent switching before the existing agreement ends.

When should I compare business electricity contracts?

Businesses should check their existing contract well before its end date. This provides time to review available options and understand any notice or renewal requirements.

Can a business have electricity and gas with different suppliers?

Yes. Ofgem states that businesses can have separate suppliers for electricity and gas, in which case they will receive separate bills.

Is a fixed business electricity contract better?

Not necessarily. A fixed contract can provide greater price certainty, while a variable arrangement may offer more flexibility but can expose the business to changing prices. The appropriate option depends on the business's priorities and circumstances.

Final Thoughts

Choosing the right business electricity contract requires more than finding the lowest advertised price.

UK businesses should consider unit rates, standing charges, contract length, renewal conditions, supplier service and the overall cost of the agreement.

The process becomes much easier when businesses start early, understand their current contract and compare offers on a like-for-like basis.

For smaller businesses in particular, regular reviews can help prevent energy procurement from becoming a last-minute task. Whether the comparison is completed independently or with professional support, the goal should always be the same: choose an electricity contract that matches the business's actual needs, budget and level of risk.