theAverageTom
Support us!
Solar · Battery · EVs · Bills

Going green without a pot of gold.

I'm Tom, an average bloke who hates bills. I paid for solar and a battery on a credit card, and I share every real number: what it cost, what it saves, and what I'd do differently.

Watch on YouTube Find your battery size
Illustration of Tom, Fran, their daughter and four cats in front of their house with solar panels
My setup
Installed Sept 2025
5.8kWp
12 × 485W Aiko panels
10.36kWh
Fox ESS EP11 battery
5kW
Fox H1 inverter
2 EVs
Tesla Model 3 & Nissan Ariya
Plus an air-to-air heat pump I bought by accident. Long story. It's in the book.
BATTERY CALCULATOR

Getting solar? Find the battery size you actually need.

Built from a year of real data from my own house. It sizes your battery to cover your peak-rate use on a cold, dull winter day.

  1. Find your coldest month on your bills or energy app (usually December or January).
  2. Pick the 3 or 4 highest-use days in that month.
  3. Take off EV charging and anything used in a cheap overnight window, then average them.
Excluding the EV and the cheap overnight rate.
BATTERY YOU NEED (USABLE)
–
Fill in your numbers above.
(Use − solar on a dull winter day) + 10% buffer. Dull-day solar comes from my 5.82kWp south-west array (about 1 kWh), with other directions scaled using typical UK overcast-day figures. The battery size assumes about 90% of a battery is usable. A guide, not a quote.
LATEST VIDEOS

Real bills. Real numbers.

See all videos →
NEW
5 Ways to Survive Winter With Solar & Battery
1-YEAR REVIEW
£0 Upfront Solar & Battery: Did My 0% Credit Card Strategy Work? (1-Year Review)
We Used 50% MORE Energy, But Our Bill Dropped 32%! Winter Solar & Battery Review
Axle Energy Review: How I Made £1/kWh Exporting to the Grid
How I Unlock Up to 17 Hours of 3p Off-Peak Electricity (The E.ON Loophole)
I Bought AC for Summer… It Accidentally Saved My Winter! Air-to-Air Heat Pump on a Budget
DEALS I ACTUALLY USE

Switch, save, and help the channel.

These are referral links: if you use one, we both get something. It costs you nothing and helps keep the videos coming.

E.ON Next
£50 in vouchers
When you switch your energy. The supplier I'm on now.
theaveragetom.co.uk/eon
Axle Energy
£25 credit each
Get paid for your battery helping the grid. Got a battery? Sign up.
theaveragetom.co.uk/axle
Sprive
Free £5 bonus
Pay your mortgage off faster. Cashback on the shopping you'd do anyway goes straight off your mortgage as overpayments. With today's rates, that could take months or even years off your mortgage. Watch my Short
Helios Solar
£50 off solar
The team who fitted my system. Quote the code when you enquire.
CODEaverageTom
Kidman Air Con
Coming soon
My heat pump's annual service is on video soon. Watch this space.
How I paid for it: a 0% card
I had no savings, so I put my system on a 0% purchase card. The best deals change all the time, so here's the up-to-date list instead of one I picked months ago.
See today's best 0% cards →
Comparison via MoneySuperMarket. Not a recommendation. Check eligibility and the representative APR, and only borrow what you can pay off before the 0% ends.

Referral and affiliate links are marked. I only list things I use myself. Offers are set by each company and can change.

MY KIT

What I film with

No studio, no pro settings. Just this lot and a lot of takes.

DJI Osmo Pocket 3 Creator Bundle
My main camera, with the DJI Mic Mini included
Ulanzi tripod
With a magnetic mount
DJI Neo 2 drone bundle
How I get the house shots

Amazon links are affiliate links. As an Amazon Associate I earn from qualifying purchases.

theAverageTom on YouTube
Skint But Solar
How I Went Green Without Meaning To
TOM MARGETTS
COMING CHRISTMAS 2026

The book

The funny, honest story of how a bloke who just hates bills ended up with two EVs, a heat pump he didn't know he'd bought, solar panels and a battery. No savings, no pot of gold, and it's still saving us money.

One email when it's ready. No spam. Privacy
WORK WITH THE CHANNEL
Brands and sponsors
Want to work with theAverageTom? Send me a message on Instagram.
DM me on Instagram

I'm a homeowner sharing my own experience, not an installer or financial adviser.

THE GUEST WALL

Say hi. Show us your setup.

Sign the wall with your first name, where you're from and what you've got. No email, no sign-up, nothing else.

Sign the wall
Your setup (tick what you've got)
Every message is checked before it goes up, usually within a few days. Please don't include surnames, addresses or contact details.
Tom
Buckinghamshire
FIRST TO SIGN
5.8kWp solar10.4kWh batteryAir-to-air heat pump2 EVs
"Welcome! Sign the wall and tell me where you're at. Planning, just installed, or years in."
Your house here
Be one of the first to sign