Infinity Energy
Services
MCS-aligned · Built by installers
Will a home battery actually save you money?
Configure a battery package, tell us about your home and tariff, and see your annual saving, payback period and 10-year net benefit — calculated live.
Step 1
Configure your battery system
Three product families we install. Pick options inside the card, then send your configuration to the calculator below.
Selected
Tesla
Powerwall 3
Industry-leading peak output and integrated solar inverter.
13.50kWh storage
10y
warranty
11.5kW
peak
Yes
solar
Expansion packs
Each adds 13.5 kWh of storage
Tesla Backup Gateway 2
Datasheets & resources(4)
Installed£0
Fox ESS
Hybrid Inverter & DC Storage
high-performance, scalable battery storage system
11.52kWh storage
10y
warranty
5kW
peak
Yes
solar
Inverter
Battery type
EP12 batteries
H1-5 + 1× EP12 (11.52 kWh · 10.37 usable)
Datasheets & resources(2)
Installed£0
Sigenergy
SigenStor
Highly configurable single & three-phase systems, 6.02 kWh to 270 kWh.
15.06kWh storage
10y
warranty
5kW
peak
Yes
solar
Inverter
Battery bank · 2/6 modules · 15.06 kWh (14.60 usable)
6.02 kWh module
5.84 kWh usable
1
9.04 kWh module
8.76 kWh usable
1
Mix & match up to 6 modules total.
Single-phase gateway
Datasheets & resources(6)
Installed£0
Step 2
Calculate your savings
All figures update live. Override the installed price with your real quote for the most accurate payback.
1. Your scenario
2. Solar system
5 kWp
35 °
95 %
Estimated annual generation
4,741 kWh
3. Your home
4,500 kWh
EV ownership
Unlocks EV-only tariffs
Smart meter installed
Required for time-of-use tariffs