Power decisions,grounded in real life.
CairnWatt is the independent UK guide to portable power stations, solar generators and home backup batteries — with the numbers, history and context behind every pick.
CairnWatt signal
EcoFlow DELTA 2
1,024Wh · LiFePO₄
£549
£50 drop
tracked across 90 days
enough for a kettle
UK-ready shortlist
Compare with confidence
The useful stuff is between the headline specs.
Battery capacity is only the beginning. CairnWatt puts output, chemistry, solar compatibility, warranty, retailer price and real-world cost into one readable view.
How we score every productLoading power stations
Choose by the day you are planning for
Power has a job to do.
Start with the situation, not the product catalogue. We translate specs into the decisions that actually happen outdoors, at home and on the road.
Off-grid weekends
Camping & van life
Quiet power, packable capacity and solar input that earns its place in the boot.
When the grid drops
Home backup
See what stays on, for how long, and where a battery beats a noisy generator.
Work without a socket
Tools & workshops
Compare surge headroom, cycle life and £ per 100W for serious portable output.
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No black boxes
A buying guide with its working out.
Useful maths
Cost per Wh, cost per 100W and honest runtime estimates you can sanity-check.
Price context
Today’s deal is only useful when you know whether it is actually a deal.
UK perspective
Guidance on solar, power cuts, electricity costs, warranties and air travel.
Clear verdicts
Original recommendations for your use case, not a wall of copied specifications.
Built for better buying
CairnWatt may earn a commission when you buy through a partner link. That never changes the price you pay or the scoring criteria we publish.