Staring at the solar PV system specifications can feel like reading a foreign language. But choosing between a 3kW, 4kW, 5kW, 6kW, or 10kW system isn’t just about the numbers; it’s about how your home actually breathes and consumes energy.
At MAK Energy, we’ve moved past the “one-size-fits-all” approach. In 2026, with energy prices remaining a moving target, your choice of solar panels needs to be a calculated investment. Here is the lowdown on the most common roof setups in Britain.
Breaking Down the Sizes: From Terraces to Estates
The 3kW Solar System in the UK
The 4kW Solar System
5kW & 6kW Solar Systems in the UK
The 10kW Solar System: The Ultimate Power Station
2026 Comparison: Expected Costs & Savings
| System Size | Ideal Household | Panel Count | Cost (Inc. Battery) | Est. Yearly Savings |
| 3 kW | 1-2 People | 7-9 | £7,200 – £8,800 | £600 – £750 |
| 4kW | Average Family | 10-12 | £8,500 – £11,000 | £800 – £1,050 |
| 5kW | Large Family + EV | 12-14 | £10,000 – £12,500 | £1,100 – £1,400 |
| 6kW | All-Electric Home | 15-18 | £12,000 – £14,500 | £1,400 – £1,750 |
| 10kW | Large Estates | 24-26 | £17,500 – £21,000 | £2,100+ |
How to Benefit from the SEG Scheme
Why Trust MAK Energy with Your Install?
A solar system is only as good as the mounting structure holding it down and the engineering behind the scenes. We don’t just “slap panels on a roof.”
Smart Tech: We pair your panels with a top-tier solar inverter for maximum efficiency.
Tough Builds: Our mounting structure hardware is rated for high-wind UK coastal areas.
Seamless Process: From the initial MCS certification to the final DNO sign-off, we handle the boring bits.
FAQ
Does 2026 require special planning permission?
Usually, no. Most UK installs fall under “Permitted Development.” As long as you aren’t in a Grade I listed building or a strict conservation zone, you’re usually good to go.
