Home energy guides
How to choose and size a portable power station or a home battery, what the certifications mean, and the rules for plug-in and balcony solar in each market, with figures from PowerTrusted's product library.
Portable Power Stations
Home Battery Storage
What size home battery do you need?
Work out battery capacity and power from your own usage, understand usable versus nominal capacity, and the 2026 incentives in Australia and the US.
Guide · 20 October 2026UL 9540, UL 1973, UL 2743 and more: energy storage certifications explained
Which certification applies to a home battery, a portable power station or an inverter, what each one proves, and how to check a listing.
Plug-in & Balcony Solar
Plug-in solar in the UK: the 800 W rules explained
Plug-in solar has been legal in Great Britain since 27 August 2026. The output limit, panel limit, plug, notification and which products qualify.
Guide · 20 October 2026Balcony solar in Germany 2026: 800 W, 2,000 Wp and the new VDE standard
What DIN VDE V 0126-95 changed: Schuko plugs, the 800 W and 960/2,000 Wp limits, registration, tenants' rights and adding a battery.
Guide · 20 October 2026Plug-in solar in the US: which states allow balcony solar
Ten US states have legalised plug-in solar. The state laws, their 1,200 W limits, start dates and what to check before you buy.