UK Solar Panel & Battery Cost Calculators by kW System Size, Battery Brand & DNO Region (2026)
Select your exact solar system size (3kW, 4kW, 5kW, 6kW, 8kW), battery brand (Tesla Powerwall 3, GivEnergy, Fox ESS), or UK DNO grid region for 2026 MCS 0% VAT installed prices and SEG export returns.
3kW Solar Panel System Cost UK (7× 440W Panels + Optional 5kWh Battery)
Fits Compact Terraced & 2-Bed Roofs (14m² Roof Space Required) (Saves £620 – £840/yr).
4kW Solar Panel System with 5kWh Battery Cost UK (10× 440W Panels)
UK #1 Most Popular 3-Bed Semi-Detached Turnkey Specification (Saves £890 – £1,180/yr).
5kW Solar Panel System with 10kWh Hybrid Battery Cost UK (12× 440W Panels)
Includes DNO G99 Fast-Track Application, Scaffolding & Bird Mesh (Saves £1,120 – £1,450/yr).
6kW Solar Panel System with 10kWh Battery Cost UK (14× 440W Panels)
Ideal for 4-Bed Detached Homes, Heat Pumps & Home EV Charging (Saves £1,290 – £1,680/yr).
8kW Solar Panel System + 13.5kWh Battery Cost UK (18× 440W Panels)
East/West Split or Large South Roof with G99/G100 Export Control (Saves £1,650 – £2,150/yr).
10kW Solar Array Cost UK (22× 440W Panels for Large Homes & Annexes)
Single-Phase G100 Export-Limited or 3-Phase 11.04kW G98 Connection (Saves £1,950 – £2,550/yr).
Tesla Powerwall 3 UK Installed Cost (13.5kWh + Built-In 11.04kW Solar Inverter)
Integrated Hybrid Inverter + Storm Watch Whole-Home Backup Gateway (0% VAT Qualifying).
GivEnergy 9.5kWh Battery & All-In-One 13.5kWh UK Installed Price Guide
Seamless Integration with Octopus Intelligent Flux (up to 29p/kWh Export) (Octopus Intelligent Flux Ready).
Fox ESS H1 Hybrid Inverter + EP5 / EP11 Battery UK Installed Cost
High-Voltage LiFePO4 Chemistry with 10-Year Manufacturer Warranty (IP65 Outdoor Rated).
Myenergi Libbi 5kWh–20kWh Modular Solar Battery UK Installed Cost
Automatic Solar Divert Coordination Between Car, Hot Water & Home Battery (UK-Engineered Ecosystem).
Cost of Solar Panels for a 3-Bed Semi-Detached House in the UK (2026)
Complete Breakdown of Panels, Hybrid Inverter, Scaffolding & MCS (6.2 – 7.4 Year Payback).
Cost of Solar Panels for a 4-Bed Detached House in the UK (2026)
Sized for 4,200–5,800 kWh/yr Family Consumption + EV Charging (5.8 – 6.9 Year Payback).
Flat Roof Solar Panels Cost UK (Non-Penetrating Ballasted Tubs & Frames)
Van der Valk / SunFix Ballast Calculation & Permitted Development Rules (Zero Roof Membrane Drilling).
In-Roof Integrated Solar Panels Cost UK (GSE Tray System for Reroofs & New Builds)
Saves £1,200–£2,000 on Roof Tiles When Combined with a Reroof or Extension (BBA Weatherproof Certified).
Solar Panels in London, East & South East (UK Power Networks G98/G99 Guide)
UKPN Smart Connect G99 Fast-Track Rules & Peak Southern Sun Hours (Highest UK Solar Irradiance).
Solar Panels in the Midlands, South West & South Wales (NGED G98/G99 Calculator)
Regional Solar Payback Across Bristol, Devon, Cornwall, Birmingham & Cardiff (Fast Online NGED G99 Portal).
Solar Panels in Central Southern England & North Scotland (SSEN Solar Guide)
Hampshire, Oxfordshire, Dorset & Scottish Highlands DNO Export Rules (MCS Snow & Wind Load Rated).
Solar Panels in Glasgow, Edinburgh, Merseyside & North Wales (SPEN Guide)
How 7p/kWh Overnight Winter Charging Doubles Scottish & Northern ROI (Off-Peak Battery Arbitrage Boost).
Solar Panels in Manchester, Lancashire & Cumbria (ENWL Solar Calculator)
North West Roof Sizing, N-Type Low-Light Bifacial Gains & SEG Export (ENWL G98/G99 Auto-Connect).
Solar Panels in Yorkshire & the North East (Northern Powergrid Solar Guide)
NPg Auto-G99 Fast-Track & 0% VAT Hybrid Battery Payback Table (Leeds, Sheffield & Newcastle).