15kW Solar Panel System in the UK
Save heavy on your power bills
If you have a very large home or a property with high energy use, a 15kW solar panel system is a great option. This system can generate a lot of power, helping you lower your energy bills and reduce your need for electricity from the national grid. It’s ideal for large homes or even small businesses looking for more energy independence and sustainability.
Why People Choose 15kW Solar Panel System
- Save £2,500 – £3,100 each year on energy bills
- Use less electricity from the national grid and make more of your own power
- Perfect for very large homes or properties with high energy needs
- Great for those wanting to save more and be more eco-friendly
What’s Included in the 15kW Solar Panel System Package?
- Top-quality solar panels from reliable brands
- A strong inverter to convert energy efficiently
- Professional installation by our expert team
- Free roof check to make sure the system fits perfectly
- Custom design based on your home’s energy needs
- Easy installation with no surprises, just savings
15kW Solar Panel System Performance & Value Overview
Details
What you Get
Yearly Output
~12,750 kWh – 15,000 kWh (without battery)
~12,750 kWh – 15,000 kWh (with battery)
Typical Annual Savings
£1,200 – £1,800 (without battery)
£2,500 – £3,100 (with battery)
Installed Cost (without battery)
£17,000 – £21,000
Installed Cost (with battery)
Installed Cost (with battery) £14,000 – £16,000
Payback Time (without battery)
~6 – 8 years
Payback Time (with battery)
~7 – 9 years
Good For
Very large homes
Roof Space Needed
~65 – 75 m²
Number of Panels
37 panels (450 – 500W each)
15kW Solar Panel System with vs Without Battery
The 15kW solar system is designed for very large homes or properties with high energy needs. While starting without a battery is simpler and more affordable, adding a battery lets you store extra energy to use at night, giving you more control over your power usage.
Setup
No Battery
With Battery
Annual Power Output
12,750 – 15,000 kWh
12,750 – 15,000 kWh
Use at Night
From the grid
From stored solar energy
Upfront Cost
£17,000 – £21,000
£18,500 – £23,000
Savings Each Year
£1,200 – £1,800
£2,500 – £3,100
Energy Independence
Only during the day
Day and night usage
Note: These are average figures. Actual savings and energy output depend on your location and usage habit
Is a 15kW Solar Panel System Right for You?
A 15kW system might be a good choice if:
- You live in a very large home or a property with high energy demands
- Your electricity use is high, and you want maximum savings on your energy bills
- You want more control over your energy, even at night
- You’re thinking long-term and want to future-proof your home with a solar battery
Looking at Other Sizes? Here’s a Quick Comparison of Popular Solar Panel System Sizes
System Size
No. of Panels
Yearly Output
Yearly Savings
Cost Estimate
Suited For
2kW
5–6
1,700–2,000 kWh
£140–£200
£3,000–£4,000
Small homes/flats
3kW
8
2,550–3,000 kWh
£210–£300
£4,500–£10,000
3–4 bedroom homes
5kW
12–13
4,250–5,000 kWh
£400–£1,000
£7,000–£13,000
Medium-sized homes
6kW
12–14
5,100–60,00 kWh
£1,000–£1,300
£10,000–£12,000
Larger homes (4–5 bed)
10kW
~25
8,500–10,000 kWh
£800–£2,100
£12,000–£16,000
Large homes/businesses
A Step Toward a Greener Future
The 15kW solar panel system is the best choice for very large homes, offering maximum energy production and savings. You can also add a battery in the future for greater energy control, making it an investment in a sustainable, energy-efficient future for your home or business.
Ready to Start Saving with Solar Energy?
Contact us for a no-pressure consultation and find out how much you could save with a 15kW solar system, specifically designed for your home
Common Questions
About the 15kW Solar Panel System
A 15kW solar system without a battery can cost between £17000 and £21000, depending on panel selection, installation, and other factors
 With a 15kW system, you could save between £1,200 and £3,100 per year, depending on whether you include a battery and your household’s energy needs
 Yes, a 15kW system is perfect for very large homes with high electricity use
 Yes! You can add more panels or a battery later if your energy needs increase
 In most cases, no special permissions are required unless there are specific local regulations..
Installation usually takes 1 to 2 days with minimal disruption to your routine.
We install world’s top solar brands
To give you the best solar experience
Save heavy on your power bills
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