The Energy Cost Squeeze Is Real
Since the outbreak of conflict in the Middle East, 82% of UK small businesses have felt the impact of rising energy prices. Nearly half believe they'll pay £1,000 or more extra per month in 2026. For sole traders working from home or running small premises, this is a direct hit to your bottom line.
Combined with interest rates held at 3.75% and frozen tax thresholds, the overhead squeeze is tighter than ever. Here's how to fight back.
What's Driving Energy Prices Up?
Three factors are converging in 2026:
- Geopolitical instability - Middle East conflict has pushed global oil and gas prices up sharply since late 2025
- Network charges - Transmission Network Use of System (TNUoS) charges are set to double in 2026, adding around £25 per MWh to business electricity prices
- Carbon costs - the UK Emissions Trading Scheme is pushing up the cost of gas-fired electricity generation
The result: business electricity rates are averaging 30-40p/kWh in early 2026, compared to 25-30p/kWh a year ago.
Claiming Energy Costs as a Tax Deduction
Before we talk about reducing costs, make sure you're claiming what you're entitled to.
Working from Home
If you work from home, you can claim a proportion of your household energy costs as a business expense. There are two methods:
Simplified expenses (recommended):
| Hours worked from home per month | Monthly flat rate |
|---|---|
| 25-50 hours | £10 |
| 51-100 hours | £18 |
| 101+ hours | £26 |
This is the easiest method and requires no calculation of actual costs. Most full-time sole traders will claim £26/month (£312/year).
Actual costs method: Calculate the proportion of your home used for business and claim that percentage of your total utility bills. This is more complex but can yield a higher deduction if you have a dedicated office room.
TaxMTD's AI categorisation can flag home office expenses and help you track them against the simplified or actual cost method.
Business Premises
If you rent a workshop, studio, or office, 100% of energy costs are an allowable business expense. Make sure these are properly categorised in your bank feeds.
7 Practical Ways to Cut Energy Costs
1. Switch Supplier Before Your Contract Ends
If your energy contract is ending in the next 6 months, start shopping around now. Business energy comparison sites can save you 10-20% compared to rolling onto a default tariff. Lock in a fixed rate before the April TNUoS increase hits.
2. Audit Your "Vampire" Devices
Printers, monitors, phone chargers, and air conditioning units drain power on standby. A quick audit can reveal surprising waste:
- Turn devices off at the wall, not just to standby
- Use smart plugs to schedule power to printers and monitors
- Unplug chargers when not in use
3. Switch to LED Lighting
If you haven't already, replace halogen and fluorescent bulbs with LED alternatives. LED bulbs use up to 80% less energy and last 25 times longer. The upfront cost pays for itself within months.
4. Optimise Heating
Heating is typically the largest single energy cost:
- Drop the thermostat by 1°C - this can reduce heating bills by 10%
- Use a programmable thermostat to avoid heating when you're not working
- If you work from home, only heat the room you're working in
- Draught-proof windows and doors
5. Consider Solar Panels
Solar panel costs have dropped significantly and government incentives remain available. For sole traders with business premises, solar can reduce electricity bills by 50-70%. The panels are also a capital expense that can be claimed via the Annual Investment Allowance.
6. Monitor Your Usage
You can't manage what you don't measure. Install a smart meter (free from your supplier) and use the real-time display to identify peak usage periods and wasteful habits.
7. Review Your Tariff Type
Business tariffs come in several types:
- Fixed rate - price certainty, good when prices are rising
- Variable/flexible - can be cheaper but risky in a volatile market
- Green tariff - sometimes competitively priced and good for brand positioning
The Tax Benefit of Higher Costs
Here's the silver lining: higher energy costs mean a larger tax deduction. If your energy bills rise by £1,200 this year, and you're a basic rate taxpayer, that's an extra £336 back in reduced tax and NI (at the combined 28% rate).
This only works if you're actually claiming the expense. Using TaxMTD with bank feeds ensures every utility payment is captured and categorised correctly.
The Bigger Picture
Energy costs are just one part of the overhead squeeze in 2026. Combined with rising NI thresholds, frozen personal allowances, and higher raw material costs, sole traders need to be more disciplined about expense management than ever.
The businesses that will thrive are those that:
- Track every expense meticulously
- Claim every deduction they're entitled to
- Review pricing to reflect increased costs
- Invest in efficiency where the payback is clear
Start tracking your expenses properly with TaxMTD - because in 2026, every pound counts.
Further reading: UK Interest Rates: Impact on Freelancers · Self Assessment Guide · Mileage Tracking Guide