As UK temperatures rise, cooling costs are quickly becoming as significant as winter heating bills. For many businesses - from high-street retail and hospitality to manufacturing and care homes - the long summer days bring a spike in energy usage that directly impacts the bottom line. While this presents a challenge, it also creates a valuable opportunity.

Summer is often a strategic time to review your business energy contract. With the market stabilising after a volatile period, businesses renewing their contracts now can avoid the penalty rates associated with out-of-contract tariffs and secure a tariff that protects them from future price shocks.

This guide provides practical, seasonal energy-saving tips to help your business reduce its consumption this summer. We'll explore everything from no-cost operational changes to high-impact upgrades, helping you lower your energy bills and improve your company's energy efficiency.

Changing how your business uses energy can help reduce summer costs. But usage is only one part of the picture. The bigger priority is making sure your business is on the right energy tariff, with the right supplier, based on how and when you actually use gas and electricity.

Even strong energy-saving habits can be undermined by an unsuitable contract. If your business is on out-of-contract rates, deemed rates or an energy tariff that no longer reflects your consumption, you may still be paying more than necessary.

Review your current energy tariff first

Before making operational changes, check whether your current business energy tariff is still competitive. Summer is a sensible time to do this, especially if your contract is due to end within the next three to six months.

A tariff review should look at:

• Your current unit rates and standing charges.
• Your contract end date.
• Whether you’re on fixed, variable, deemed or out-of-contract rates.
• How your usage changes between summer and winter.
• Whether your business has peak-time consumption that affects costs.
• Whether a different supplier could offer better terms.

This is especially important for high-use sectors such as care homes, manufacturing, hospitality and retail, where small differences in unit rates can add up quickly across a year.

Compare suppliers before your contract ends

Business energy prices move regularly, and the best supplier for your business may change depending on your usage, location, meter type and contract length. Waiting until your current deal expires can leave you exposed to expensive default rates.

Comparing suppliers early gives you more control. It allows you to review the market properly, secure a suitable fixed-term energy contract and avoid being rushed into a poor renewal offer.

Business Utility Hub monitors gas and electricity prices daily, compares trusted UK suppliers and helps you understand which tariff is most appropriate for your business.

Check your energy consumption

Once your tariff has been reviewed, the next step is to look at how your business uses energy. This helps identify whether your current contract matches your actual demand and whether your business is potentially wasting energy.

For example, a retail unit with high daytime cooling needs will have a different profile from a manufacturer running machinery early in the morning, or a care home using energy consistently throughout the day and night.

Reviewing consumption can highlight:

• Unnecessary usage during closed hours.
• High demand from cooling or refrigeration.
• Equipment being left on standby.
• Seasonal changes in electricity use.
• Sites where usage has changed since the last contract was agreed.
• Opportunities to move to a more suitable business energy tariff.

This makes supplier comparison more accurate and helps avoid paying for a contract that no longer fits how your business operates.

Simple summer energy cost saving actions to conserve energy

No-cost and low-cost changes can still support lower business energy bills, particularly during warmer months when cooling, ventilation and air flow demand increases.

You can reduce summer consumption by:

• Setting your air conditioner slightly higher, while keeping temperatures within a comfortable commercial range.
• Keeping windows and doors closed when cooling systems are running, so cooled air and warm air aren’t constantly being exchanged.
• Using blinds or shutters to reduce heat from direct sunlight.
• Cleaning or replacing air conditioning filters during peak summer use to help maintain efficient air flow.
• Checking whether your heating system is fully switched to summer settings, rather than circulating warm air unnecessarily.
• Reviewing boiler flow temperature settings where hot water demand is lower in summer.
• Investing in energy efficient appliances when older equipment needs replacing.
• Switching to LED lighting to reduce electricity use and heat output.
• Turning off monitors, printers, point-of-sale systems and non-essential equipment overnight, rather than leaving them in standby mode.
• Using energy monitors to identify where electricity is being used outside trading or operating hours.
• Using natural light where possible.
• Scheduling energy-intensive tasks for cooler parts of the day where operationally practical.
• Checking whether longer-term measures, such as cavity wall insulation, could help reduce heat loss in winter and limit warm air transfer during warmer periods.

These actions will reduce waste and improve day-to-day efficiency. They work best when combined with a competitive business energy tariff and regular supplier comparison.

Consider longer-term energy improvements

Some businesses may also benefit from targeted investment in energy efficiency. These changes need more planning, but can reduce energy demand over time.

Common upgrades include:

• Improving roof insulation and sealing air leaks.
• Installing LED lighting across the site.
• Upgrading old air conditioning or refrigeration systems.
• Using smart thermostats or building management systems.
• Replacing inefficient commercial appliances when they reach the end of their life.

For hospitality, healthcare, manufacturing and retail businesses, equipment efficiency can have a clear impact on both direct electricity use and the amount of heat that cooling systems must remove.

Do not overlook hot water and boiler settings

Even in summer, many businesses still rely on boilers for hot water. Care homes, hospitality venues, manufacturers and food businesses often use hot water throughout the year.

Summer is a useful time to service boilers, check system efficiency and review settings. However, businesses must not reduce hot water storage temperatures without professional advice, as commercial premises need to manage Legionella risk properly.

The main priority: match your contract to your business

Energy-saving measures are useful, but the biggest opportunity often comes from making sure your business is on the right gas and electricity tariff.

If your business usage has changed, your contract is nearing renewal, or you have not compared suppliers recently, it is worth reviewing your options now. A better-matched tariff can improve cost control, reduce the risk of overpaying and give you clearer budgeting for the months ahead.

Implementing these energy-saving tips will help you reduce consumption and lower operational costs. However, securing the right business energy contract is equally important for long-term financial stability.

The team at Business Utility Hub analyses the market daily to help businesses find the most appropriate business energy contract for their specific needs. We compare suppliers, explain the options clearly, and provide transparent support with no hidden fees, ensuring you can lock in a competitive tariff and focus on running your operations.