Installed in
6 weeks, not 6-12 months
How much could you save?
Manufactured in the UK
Need More Power? Skip the Grid Upgrade.
WattBox runs alongside your grid supply to boost your available power — installed in 6 weeks, not 6-12 months. No DNO upgrade required.
- Boost your power without a grid upgrade
- Installed in 6 weeks, not 6-12 months
- Save up to 60% on energy bills as a bonus

Poultry farm, Midlands
Hit their grid limit adding new ventilation and cold storage. Rather than wait months for a DNO upgrade, a WattBox boosted their available power in 6 weeks — and cut their energy bill at the same time.
HOW IT WORKS
WattBox runs in parallel. Your grid doesn't change.
WattBox sits between your grid supply and your heavy machinery. It charges from solar and cheap-rate grid power, then provides extra power on demand — boosting your total available draw beyond what the grid alone can deliver.
HOW IT WORKS
How WattBox boosts your power
Step 1
Solar charges your WattBox
Solar panels generate free electricity during the day. WattBox stores it in industrial batteries, building your power reserve.
Step 2
Batteries boost your supply
When your machinery draws more than the grid can deliver, WattBox supplies the difference instantly. No tripping, no brownouts.
Step 3
Peak demand? No problem.
Milking, cooling, ventilation all running at once? WattBox handles the load. Your grid supply stays within its limit while your farm runs at full capacity.
Step 4
Bills drop, not just power rises
You’re generating and storing your own energy, using less from the grid. The same system that boosts your power also cuts your bills.
More power today. Lower bills every day.
One box, hundreds of configurations
Every WattBox is custom-built to match your exact requirements.
Grid-tied or Off-grid
Compatible with any power source - stay connected or go fully independent
Single or Three Phase
Sized for homes, farms, or large commercial operations
32 kWh - 416 kWh storage
Modular battery banks that scale with your needs
10 kW - 350 kW solar
From small rooftop arrays to large ground-mounted systems
Works with existing solar
Already have panels? We integrate seamlessly with your system
Add backup generator
Optional generator integration for ultimate peace of mind
EXPECTED OUTCOMES
What could you save?
New monthly bill
£1,860/month
was £3,720/month
Payback period
4.3 years
then pure savings
Cumulative cost over time
Total energy spend over 20 years — with and without WattBox
Based on a typical large farm using 12,500 kWh/month with a time-of-use tariff.
Common Questions
Straight answers about power boosting, costs & timelines
Still waiting on the grid? Your farm doesn't have to.
Get your free power plan in under 2 minutes. No obligation — if the numbers don't work, we'll tell you.