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Solar panel buying guide

Updated: October 2026

You are looking at an amazon.co.uk title that says 200 watts and 12 volts, and you need to know whether that panel will charge the leisure battery or power station you already own. This solar panel buying guide is the order of checks for the twelve modules in our [solar panel comparison](/hub/electrical-equipment/solar-panel), saved between £69.99 and £194.99. It does not name a top pick. Energy Saving Trust puts a typical home install around £7,600 for about 4.5 kWp, which is a different purchase. Listings were saved on 19 October 2026. If you buy through our links we may earn a commission at no extra cost to you.

You are looking at an amazon.co.uk title that says 200 watts and 12 volts, and you need to know whether that panel will charge the leisure battery or power station you already own.

Our top picks

Renogy Renogy 200W rigid

Best overall

Renogy Renogy 200W rigid
8.7/10about £129.99
View offer
DOKIO DOKIO 100W suitcase

Best value

DOKIO DOKIO 100W suitcase
9.3/10about £79.99
View offer
Topsolar Topsolar 180W flexible

Rank 3

Topsolar Topsolar 180W flexible
7.4/10about £119.99
View offer
On this page
  1. 1.A house array and a panel on amazon.co.uk are different purchases
  2. 2.Six checks before you look at the price
  3. 3.Where these listings disagree with themselves
  4. 4.What good enough output looks like in the UK

A house array and a panel on amazon.co.uk are different purchases

Energy Saving Trust treats an unshaded south-facing roof as the house ideal. East- or west-facing roofs in that guidance produce about 15–20% less. The Centre for Sustainable Energy puts a fixed array at roughly 700–900 kWh a year per installed kilowatt-peak. Those figures size a roof contract. They do not price a suitcase on a picnic table. Approved Document P, in the 2013 edition still on GOV.UK, brings photovoltaic panels on a dwelling roof into Part P. A panel you unfold beside a tent is outside that job.

Six checks before you look at the price

Start with the job: caravan battery, shed battery, or power station, and whether a regulator is already there. A suitcase is what you pack, and a flexible sheet is only for a curve you will bond. The Renogy 200 W panel at £129.99 prints MC4, 20 V maximum and 6.85 A, with no controller. The DOKIO 100 W suitcase at £79.99 is the only listing with a stated 10 A controller. The Topsolar 180 W sheet is the curve case, and UK reviews sit nearer 100–130 W than 180 W. Picks after these checks are on best solar panel.
Renogy Renogy 200W rigid

Testsieger

Renogy Renogy 200W rigid
8.7/10about £129.99
View offer

Where these listings disagree with themselves

Three cartons disagree with their own titles, so read the glass before you drill. The ECO-WORTHY pair at £189.99 says 400 W and also 2×195 W. Two times 195 is 390, not a clean 400. The ECOBOSS pair at £159.99 has a 2×200 W title and a maximum-power field of 200 W, and the saved bodies are headed United States. The Ecosonique suitcase says USB-C PD 65 W in the title and PD 45 W in a bullet. The MHPOWOS item field says 3.54 kg and the bullets say 4.5 kg.

What good enough output looks like in the UK

Kilowatt-peak means standard test conditions, not a Tuesday in Manchester. Just over 160 W into a Jackery 1000 v2 on a cloudy rainy day is a useful UK point for the Renogy 200 W glass. About 60 W from the DOKIO suitcase in clear sun is why a sticker is a ceiling. If you see nothing, check polarity, a cover, and whether a controller is in circuit. Connection order is on how to connect a solar panel.

Common questions

Is a 200 watt panel twice as useful as a 100 watt panel in Britain?
Only as a sticker. Ideal-conditions watts double, and a British sky often does not. Renogy 200 W owners reported roughly 160–212 W in sun, and an AeternaSol 200 W owner saw about 20–70 W when overcast. Buy the larger panel when the job needs the headroom and the roof can carry it. Expect both to fall when the sun is low.
Why does the title say 12 volts when the listing prints 20 volts or more?
The 12 V line usually means a nominal battery system. The lead voltage is separate. Here, 20 V maximum on the Renogy rigid panel is ordinary for that module. 24 V on the Ecosonique suitcase, 33.69 V on the ShadowFlux 120 W, and 36.5 V on the ShadowFlux 200 W must sit inside the controller or power-station window. If that window is not in the manual you own, do not guess.
Do I need a charge controller, and is PWM enough?
You need something between the panel and the battery. Only the DOKIO suitcase states a 10 A controller in the box. PWM is the simple match for a small nominal 12 V panel and a 12 V leisure battery. It is a poor assumption once the listing prints 33–36 V. The Ecosonique USB chip is not that regulator.
What connector am I actually buying?
Read the connector field, not the photo. Most rigid panels here print MC4. Do not decide polarity from the housing shape. Meter it. MHPOWOS is XT60. DOKIO is XT60 plus clips and adapters. Ecosonique includes MC4 and a short multi-lead. A lead that changes the plug does not change the voltage, and it does not add a battery controller.
Will this panel run a house or earn export payments?
No. These are off-grid modules, from a £69.99 bifacial frame to a £194.99 anti-shade panel. Export payments belong to an installed array of the kind Energy Saving Trust prices in thousands of pounds. Part P can apply when panels are fixed to a dwelling. A picnic-table panel is not that work.
How do I treat a pair listing whose watt field does not match the title?
Believe the carton, then the label on the glass. The ECO-WORTHY page mixes 400 W, 2×195 W, and a 195 W component line. The ECOBOSS pair mixes a 400 W title with a 200 W power field and a copied weight. Neither clash is a daily watt figure. Count what arrives before you drill or buy a controller for a total you have not seen.

Related pages

Rigid or foldable solar panel

Solar panel

Best solar panel: Renogy glass or a DOKIO suitcase

Solar panel for a campervan: roof, suitcase, or sheet

How to connect a solar panel: battery first, then panel

Sources

Public UK sources are listed below. Shelf prices and star lines are the amazon.co.uk figures on the saved listings. Last checked October 2026.

  1. GPDO 2015, Schedule 2, Part 14 (retrieved October 2026)
  2. GOV.UK, Smart Export Guarantee (retrieved October 2026)
  3. MCS MIS 3002, Solar PV systems (retrieved October 2026)
  4. GOV.UK VAT Notice 708/6 (retrieved October 2026)
  5. Approved Document P (retrieved October 2026)
  6. BS EN IEC 61215-1:2021 via NBS (retrieved October 2026)
  7. Planning Inspectorate note on megawatts-peak (retrieved October 2026)