Battery Education · System Comparison
Powerwall vs. Enphase
& All 5 Systems We Install
We install five home battery systems. Here's the honest comparison — specs, pros, cons, and which one is right for your Fresno home — without the sales pitch.
Tesla Powerwall 3
PremiumCapacity
13.5 kWh usable
Power
11.5 kW continuous / 22 kW peak
Chemistry
Lithium Iron Phosphate (LFP)
Warranty
10 years, 70% capacity retention
Best for: Homes with or without existing solar. Best whole-home backup power output of any residential battery.
Pros
- Highest continuous power output (11.5 kW) — can run central AC
- Built-in inverter simplifies installation
- Excellent monitoring app
- Stackable (up to 4 units)
- LFP chemistry — safer, longer cycle life
Cons
- −Requires Tesla-certified installer
- −Higher upfront cost per kWh than some competitors
- −Less modular than Enphase
Enphase IQ Battery 5P
PremiumCapacity
5 kWh per unit (stackable)
Power
3.84 kW continuous per unit
Chemistry
Lithium Iron Phosphate (LFP)
Warranty
15 years
Best for: Homes with existing Enphase solar systems. Highly modular — start with one unit and add more.
Pros
- 15-year warranty (longest in class)
- Modular — add capacity incrementally
- Excellent integration with Enphase solar
- Proven reliability record
- AC-coupled — works with any solar system
Cons
- −Lower power output per unit than Powerwall
- −Need multiple units for whole-home backup
- −Higher cost for equivalent capacity
Franklin WH aPower
Mid-rangeCapacity
13.6 kWh usable
Power
5 kW continuous
Chemistry
Lithium Iron Phosphate (LFP)
Warranty
10 years
Best for: Homeowners seeking high capacity at a competitive price point. Good value for essential load backup.
Pros
- Competitive price per kWh
- High capacity (13.6 kWh)
- LFP chemistry
- Good monitoring app
Cons
- −Lower continuous power than Powerwall
- −Less brand recognition
- −Fewer certified installers
SolarEdge Energy Bank
Mid-rangeCapacity
9.7 kWh usable
Power
5 kW continuous
Chemistry
Lithium Iron Phosphate (LFP)
Warranty
10 years
Best for: Homes with existing SolarEdge solar systems. Direct integration eliminates additional inverter.
Pros
- Seamless SolarEdge integration
- Single monitoring platform
- LFP chemistry
- No additional inverter needed
Cons
- −Only works with SolarEdge inverters
- −Lower capacity than Powerwall
- −Limited backup power output
Sol-Ark Hybrid Inverter
Premium (system)Capacity
Inverter only — pairs with external batteries
Power
12 kW continuous
Chemistry
Compatible with LFP and other chemistries
Warranty
10 years
Best for: Homeowners wanting maximum flexibility and power output. Can pair with multiple battery brands.
Pros
- Highest power output for whole-home backup
- Works with multiple battery brands
- Generator integration
- Off-grid capable
Cons
- −More complex installation
- −Requires separate battery purchase
- −Higher total system cost
Frequently Asked Questions
Which is better for Fresno homeowners: Tesla Powerwall or Enphase battery?
It depends on your priorities. The Tesla Powerwall 3 has higher continuous power output (11.5 kW vs 3.84 kW per Enphase unit), making it better for whole-home backup including central AC. The Enphase IQ Battery 5P has a longer warranty (15 years vs 10 years) and is more modular. If you have an existing Enphase solar system, the Enphase battery integrates seamlessly. If you want maximum backup power, the Powerwall 3 is the better choice.
Can a home battery run central air conditioning in Fresno?
Yes, but it requires adequate battery capacity and power output. A 3-ton central AC unit draws 3,000–4,000W continuously. The Tesla Powerwall 3 (11.5 kW continuous output) can run it. The Enphase IQ Battery 5P (3.84 kW per unit) cannot run a 3-ton AC on a single unit — you'd need 2+ units. The Sol-Ark hybrid inverter with adequate battery capacity is the most capable option for whole-home backup with AC.
What is lithium iron phosphate (LFP) and why does it matter?
Lithium iron phosphate (LFP) is a battery chemistry used in all five systems we install. Compared to older lithium-ion chemistries (NMC, NCA), LFP is safer (lower fire risk), has a longer cycle life (3,000–6,000 cycles vs 1,000–2,000), and performs better in high-temperature environments like Fresno. The tradeoff is lower energy density — LFP batteries are larger and heavier for the same capacity.
How many Tesla Powerwalls do I need for my Fresno home?
For essential loads only (refrigerator, lights, outlets, medical equipment): one Powerwall 3 is usually sufficient with solar recharging. For whole-home backup including central air conditioning: two Powerwalls (27 kWh, 23 kW combined output) are recommended. We size the system based on your actual energy usage and backup goals during the free site assessment.
Can I add a battery to my existing solar system in Fresno?
Yes. All five systems we install can be retrofitted to existing solar systems. The Enphase IQ Battery 5P and Franklin WH aPower are AC-coupled and work with any solar system. The Tesla Powerwall 3 can be AC-coupled to existing systems. The SolarEdge Energy Bank requires an existing SolarEdge inverter. We assess your existing system during the free site visit and recommend the best retrofit option.
Not Sure Which System Is Right for You?
We assess your home's energy usage and backup goals and recommend the right system — honestly. Free assessment in Fresno, Clovis, Madera, and 70+ Central Valley communities. Licensed contractor #1063682.
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