UK Solar PV, Battery Storage & SEG Technical Guides
Independent statutory analysis by Tarquin Barnsby (trading as MySolarCalculatorTool.co.uk) (ICO Reg: ZC136598).
2026-04-01 • 6 min read
4kW vs 6kW Solar Panel & Battery Storage Cost in the UK (2026/27 Price Guide)
Complete turnkey MCS installation pricing for 8 to 16 x 440W N-type solar panels, 5kWh vs 10kWh LiFePO4 hybrid batteries, scaffolding, and 0% VAT savings.
Read Guide2026-04-05 • 5 min read
Best Smart Export Guarantee (SEG) Tariffs 2026: Octopus Flux vs Outgoing vs E.ON Next
How to earn 15p to 29p per kWh exporting surplus solar and battery power to the National Grid, including MCS certificate and smart meter requirements.
Read Guide2026-04-10 • 7 min read
Solar Battery Storage Sizing (5kWh vs 10kWh vs 13.5kWh): Self-Consumption & Winter Arbitrage
Why adding a 5.1kWh or 10.2kWh LiFePO4 battery boosts solar self-consumption from 35% to 85% and slashes winter grid bills via 7p/kWh overnight charging.
Read Guide2026-04-14 • 5 min read
MCS Certification, DNO G98 vs G99 Approval & 0% VAT Rules Explained
Essential UK regulatory checklist before signing a solar quote: ENA G98 (3.68kW limit) vs G99 prior approval, Part P electrical sign-off, and bird mesh protection.
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