Official UK website · In stock
WattLock Energy SaverPlugs into any UK socket in 10 seconds
The plug-in energy saver built for British homes. No electrician, no app, no subscription. Just plug it in and the green light comes on.
- From £39 – up to 62% off
- Free UK delivery
- 30-day money-back guarantee
- One unit covers a whole circuit
Choose your bundle
Up to 62% off- 2 × WattLock
- £59.00
- UK delivery (tracked)
- FREE
- Total (VAT included)
- £59.00
- 1Enter delivery address
- 2Pay securely
- 3Dispatched with tracking
Free UK delivery
30-day money-back guarantee. Not happy? Send it back for a full refund. Read the terms. Secure Shopify checkout, prices include VAT.
Why UK homes trust WattLock
UK plug standard
Made for British 3-pin sockets
Fire-resistant casing
With an approved capacitor
Secure checkout
Payments by Shopify
UK support
Real people, by email
Free UK delivery
Tracked to your door
30-day guarantee
Full refund if not happy
What is the WattLock Energy Saver?
The WattLock Energy Saver is a small plug-in device for British homes. Inside is a TrueWatt circuit built around an approved capacitor, sealed in a fire-resistant casing about the size of a phone charger. You plug it into an ordinary 3-pin socket, the green light comes on, and it works on every socket on that circuit, day and night.
There's nothing to wire, no app to download and no subscription. You keep your energy supplier, your tariff and your habits. Most homes need one WattLock per socket circuit, usually between one and four.
Want to check before you buy? Read is WattLock legit?, does WattLock work?, the WattLock price in the UK and where to plug WattLock in.
How WattLock works
Three steps. Under 10 seconds. No tools.
- 1
Plug it in
Use any ordinary UK socket on the circuit you want to cover.
- 2
Green light on
The green light shows WattLock's TrueWatt circuit is working.
- 3
Carry on as normal
It works on that whole circuit, day and night. Keep your supplier and tariff.
Before and after WattLock
Before
- Appliances on standby all day and night
- Switching things off at the wall and still worrying
- Expensive fixes that need an electrician
With WattLock
- Plugged in once, working day and night
- Same appliances, same habits, same supplier
- A 10-second job you can do yourself
The factory fix, made for your socket
Factories use large power-correction cabinets that cost thousands and need an electrician. WattLock packs a similar idea into a box the size of a phone charger, priced for ordinary homes.
Industrial cabinet
- £2,000+
- Electrician
- Takes days
WattLock
- From £39
- DIY
- 10 seconds
How many WattLock do you need?
One per socket circuit. Tap your home and we'll pick the right bundle for you.
What's in the box
Each WattLock comes in its own box: one WattLock Energy Saver unit, ready to plug in.
- Plug
- Standard UK 3-pin
- Indicator
- Green light shows it's working
- Casing
- Fire-resistant
- Inside
- TrueWatt circuit with approved capacitor
- Use
- Designed to stay plugged in permanently
- Needs
- No app, no Wi-Fi, no batteries, no tools
- Covers
- Every socket on the circuit it's plugged into
- Guarantee
- 30-day money back
Who is WattLock for?
Homeowners & renters
No wiring, so it's fine for rented homes. Take it with you when you move.
See the 2-packPensioners
Simple enough to fit yourself in 10 seconds. A popular gift for parents.
See the 1-packBusy families
Bigger homes with a kitchen circuit usually choose the 3-pack.
See the 3-packNo electrician, no app
For anyone who wants something that just works, with nothing to set up.
See the 2-packGenuine WattLock vs cheap copies
Lookalike “electricity saving boxes” sell online for around £10. Here's what you get with the real thing.
| What matters | WattLock | £10 copies |
|---|---|---|
| Built to the UK plug standard | ||
| Fire-resistant casing | ||
| Sold by a UK seller | ||
| 30-day money-back guarantee | ||
| UK customer support |
Copies vary. Always check safety information and returns before buying any plug-in device.
How ordering works
Step 1
Choose your bundle
Pick 1–4 WattLock to match the socket circuits in your home.
Step 2
Pay securely
Card, Apple Pay or Google Pay on Shopify's secure checkout.
Step 3
Delivered free
Usually with you in 2–4 working days, with tracking by email.
Try it for 30 days, risk-free
- 1. Plug it in and carry on as normal.
- 2. Check your smart meter or your next bill.
- 3. Not happy? Email us within 30 days for a full refund.
Results vary with your home, appliances and tariff. Does WattLock work?
WattLock Energy Saver FAQ
Ready to plug in?
Choose your bundle
Up to 62% off- 2 × WattLock
- £59.00
- UK delivery (tracked)
- FREE
- Total (VAT included)
- £59.00
- 1Enter delivery address
- 2Pay securely
- 3Dispatched with tracking
Free UK delivery
30-day money-back guarantee. Not happy? Send it back for a full refund. Read the terms. Secure Shopify checkout, prices include VAT.
Questions? Email support@wattlock.co.uk