Plug-In Solar Buying Guide
What to consider before buying, and how to get the best price when you're ready.
What to look for
- Output: Most plug-in kits output between 400W and 800W through a standard socket. Match the size to your available space and your typical daytime consumption — there's no point paying for output you can't use.
- Certification: The inverters we recommend carry CE or UKCA markings and include anti-islanding protection (the inverter shuts off automatically if grid power is lost, which is a standard safety feature on quality kit).
- Mounting: Check what's included. Balcony brackets, ground stands, and flat-roof mounts all work differently. Renters should look for non-permanent fixings.
- Warranty: EcoFlow offers 5 years on most kits. Some third-party sellers offer less — always check before buying.
Where to buy
We recommend buying direct from the EcoFlow UK store. You get the full manufacturer warranty, UK-based support, and access to any current promotions.
For the budget end of the market, Aferiy UK is worth a look — their PS240 balcony solar system (£799 for a 1.96 kWh expandable battery with 800–1,200W output) undercuts the EcoFlow STREAM range while using the same premium LiFePO4 chemistry.
Amazon also stocks EcoFlow and Aferiy kits, but prices and seller warranties can vary.
Getting a better price
If you'd like to reduce the cost, here are a couple of options:
Use a cashback site
TopCashback currently offers 4% cashback on EcoFlow purchases. New members also get a £10 bonus.
Get 10% off with a referral
EcoFlow's referral programme gives new customers 10% off their first order. This link applies the discount automatically at checkout.
Wait for seasonal sales
EcoFlow and Aferiy typically discount kits during Black Friday, Prime Day, and summer sales events. If you're not in a rush, it's worth waiting.