How Much Can You Save with Solar Panels in Newcastle?
Understanding the financial savings from solar panels is crucial when making your investment decision. In this comprehensive guide, we break down exactly how much you can expect to save with solar panels in Newcastle upon Tyne, based on real data from our installations and current energy prices in the United Kingdom.
The amount you save depends on several factors, including the size of your solar panel system, your current electricity consumption, how much of the generated electricity you use directly, and the current price of grid electricity. We will examine each of these factors in detail to give you a clear picture of the savings you can achieve.
Current Electricity Costs in the UK
As of 2025, the average electricity unit rate in the United Kingdom is approximately 24.5p per kWh under the Energy Price Cap. The standing charge is approximately 61p per day. For a typical household consuming 3,200 kWh per year, this translates to an annual electricity cost of approximately £1,010.
Energy prices have risen significantly over the past few years and are widely expected to continue increasing. This means that the savings from solar panels are likely to grow year on year, making the investment increasingly valuable over time.
Savings by System Size
Here is a breakdown of typical annual savings for different system sizes, based on our installations in the Newcastle upon Tyne area and current electricity prices:
- 3kW System (8-10 panels): Generates approximately 2,700 kWh per year. At a self-consumption rate of 40%, this saves approximately £500-£700 per year. With battery storage, savings increase to £750-£1,000.
- 4kW System (10-12 panels): Generates approximately 3,600 kWh per year. Typical savings of £700-£950 per year without battery, or £1,000-£1,400 with battery storage.
- 5kW System (12-14 panels): Generates approximately 4,500 kWh per year. Typical savings of £850-£1,100 per year without battery, or £1,200-£1,600 with battery storage.
- 6kW System (16+ panels): Generates approximately 5,400 kWh per year. Typical savings of £1,000-£1,300 per year without battery, or £1,400-£1,900 with battery storage.
Understanding Self-Consumption
Self-consumption is the key factor that determines your savings. It refers to the percentage of the solar electricity you generate that you use directly in your home, rather than exporting to the grid. The higher your self-consumption rate, the greater your savings.
Without battery storage, a typical household achieves a self-consumption rate of around 30-50%, depending on their daytime energy usage. Adding a battery storage system can increase this to 70-85%, significantly boosting your savings.
Here are some ways to maximise your self-consumption rate:
- Run energy-intensive appliances (washing machine, dishwasher, tumble dryer) during daylight hours when your panels are generating
- Use timer settings to schedule appliances to run during peak generation periods
- Install a battery storage system to store surplus energy for evening use
- Consider an EV charger that can be programmed to charge from surplus solar energy
- Install a solar-compatible immersion heater to use surplus electricity for hot water
Smart Export Guarantee Income
Any electricity you do not use or store is automatically exported to the National Grid. Under the Smart Export Guarantee (SEG), your energy supplier will pay you for this exported electricity. Current SEG rates vary between suppliers:
- Octopus Energy: up to 15p/kWh (variable, with Agile Export)
- British Gas: 5.6p/kWh
- EDF Energy: 4.5p/kWh
- E.ON: 4.1p/kWh
- Scottish Power: 3.5p/kWh
For a 4kW system exporting approximately 2,000 kWh per year, this could earn you between £70 and £300 annually, depending on your chosen supplier and tariff.
Long-Term Savings Projections
Solar panels are a long-term investment, and the cumulative savings over their 25+ year lifespan can be substantial. Here are projected savings for a typical 4kW system over different time horizons:
- 5 Years: £3,500-£4,750 total savings
- 10 Years: £7,000-£9,500 total savings
- 15 Years: £10,500-£14,250 total savings
- 20 Years: £14,000-£19,000 total savings
- 25 Years: £17,500-£23,750 total savings
These projections assume constant electricity prices. In reality, with electricity prices expected to rise by 3-5% annually, actual savings are likely to be significantly higher.
Savings with Battery Storage
Adding a battery storage system is one of the most effective ways to increase your solar savings. Whilst a battery adds to the initial cost (typically £2,500-£7,500 depending on capacity), the additional savings it delivers mean it usually pays for itself within 6-8 years.
A battery allows you to capture surplus solar electricity during the day and use it in the evening and overnight, when you would otherwise be buying electricity from the grid at full price. This can increase your self-consumption from around 40% to over 75%, effectively doubling the value you get from each unit of solar electricity generated.
Calculate Your Personal Savings
Every home is different, and the best way to understand exactly how much you could save is to use our free online savings calculator or, better still, book a free home survey where our engineers can provide precise savings projections based on your specific property and energy usage.
Contact Newcastle Solar Panels today to find out how much you could save. Call 0330 223 7664 or request a free quote.