FindMySolar

Is Tesla Powerwall 3 better than Enphase IQ Battery 5P?

Choose the Tesla Powerwall 3 if you have high energy demands, an EV, or want to run your whole home off-grid during a power cut. Choose the Enphase IQ Battery 5P if you want the ultimate reliability, a 15-year warranty, or want to start small and expand your storage later.

Expert Comparison

Tesla Powerwall 3 vs Enphase IQ Battery 5P

An in-depth comparison of the UK's leading solar storage solutions. Compare capacity, power, chemistry, and warranty.

The Expert Verdict

Choose the Tesla Powerwall 3 if you have high energy demands, an EV, or want to run your whole home off-grid during a power cut. Choose the Enphase IQ Battery 5P if you want the ultimate reliability, a 15-year warranty, or want to start small and expand your storage later.

Tesla

Powerwall 3

Usable Capacity13.5 kWh
Continuous Power11.5 kW
ChemistryLFP (Lithium Iron Phosphate)
Warranty10 Years (80% capacity)
Price (Est.)£7,200 + installation

Key Advantages

Massive 11.5kW continuous power output
Integrated solar inverter (saves cost)
Excellent value per kWh

Limitations

Large physical footprint
Single point of failure (integrated inverter)
Enphase

IQ Battery 5P

Usable Capacity5.0 kWh (Modular up to 40kWh)
Continuous Power3.84 kW
ChemistryLFP (Lithium Iron Phosphate)
Warranty15 Years (industry best)
Price (Est.)£3,800 + installation

Key Advantages

Industry-leading 15-year warranty
Highly modular (buy only what you need)
No single point of failure (microinverter tech)

Limitations

Lower power output per unit
Higher cost per kWh if scaling up

Metric Breakdown

FeatureTesla Powerwall 3Enphase IQ Battery 5P
Usable Capacity13.5 kWh 5.0 kWh
Continuous Power11.5 kW 3.84 kW
Warranty Length10 Years 15 Years
ModularityFixed Highly Modular
Value for MoneyExcellent Premium

Frequently Asked Questions

Can I mix Tesla Powerwall 3 with an Enphase solar system?

Yes, the Tesla Powerwall 3 is an AC-coupled battery (though it has a DC inverter built-in), meaning it can sit alongside an Enphase microinverter system without issues.

Which battery is safer?

Both use LFP (Lithium Iron Phosphate) chemistry, which is currently the safest and most stable battery technology available for home use.

Ready to upgrade your home?

Get custom ROI numbers and standard quotes for these specific systems from MCS-vetted local engineers.