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Tesla Powerwall vs SolarEdge Home Battery.  Which is best?

Tesla Powerwall vs SolarEdge Home Battery. Which is best?

For over six years, Tesla Powerwall has been the undisputed leader in home battery storage.  But now, there’s a new contender on the block that promises to give Powerwall a run for its money.

That contender is the SolarEdge Home Battery.  Launched in Australia in March 2022, it’s made by a high-tech Israeli solar company with a pedigree stretching back to 2006.

We’ll start by saying that both batteries are excellent.

Both provide excellent power performance, back-up during grid outages, and high safety standards.

Powerwall is more expensive, but there again, it is a bigger battery.

However, there are some major differences between the two batteries.  And it’s these differences which will determine which battery is best suited to your home.

The differences boil down to:

  • Whether you’ve already got solar panels installed
  • Where you live and your network distributor’s rules for the size solar system you can install
  • Whether you intend to fully electrify your home and your car(s)

In this article we explain the main differences between Powerwall and SolarEdge Home Battery to give you a good understanding of which battery might be best for you.

Because battery storage is such an important investment for any home, we recommend getting in touch with us as early as possible to ensure you get the best advice to base your decision on.

On this blog:

  • How to decide whether Powerwall or SolarEdge is best for your home.
  • Feature-by-feature comparison: Powerwall vs SolarEdge Home Battery
  • The verdict

 

How to whether Powerwall or SolarEdge is best for your home 

There are three key questions we ask people when advising whether Powerwall or SolarEdge is a suitable battery for their home.

  1. Have you already got solar panels?

OK, this can be a deal-breaker for many people.  If you’ve already got a good-size solar panel system that’s working just fine, you’ll probably want to get a Powerwall.

That’s because the Powerwall works with just about any existing solar panel system.

And SolarEdge doesn’t.  SolarEdge Home Battery only works with SolarEdge inverters.

At this point, you may decide that Powerwall is best for you.  But keep reading, because SolarEdge has some extra-special features that could change your mind.

  1. What are the size limits for solar systems set by your local network distributor?

A network distributor is the company that owns and manages the electricity poles and wires in your area. They are also the company that says whether you are allowed to install solar panels and a battery on your home – and the maximum size allowed.

Some network distributors count the capacity of the battery inverter towards the total inverter capacity.  That means if you want to install Powerwall – which has its own battery inverter – it will count towards the total allowed inverter capacity.

This could tip you over the total inverter size limit allowed for your property.

The result?

You won’t be allowed to install the Powerwall.

That’s where the SolarEdge Home Battery wins out.

Because the SolarEdge Home Battery doesn’t have a built-in battery inverter, you neatly sidestep most network distributor sizing restrictions.

How so?

It’s because the SolarEdge Home Battery works with a hybrid inverter which does the job of both a solar inverter and a battery inverter.  It’s an efficient solution (delivering more power) – and the big advantage is you’re less likely to get an arbitrary size limit slapped on your proposed solar system.

But before you decide SolarEdge is the battery for you, ask us what network size limits apply to your property.  We’ll check with your distributor. That way you’ll know whether network limits are critical to your choice of battery.

  1. Do you need the scope to ‘go bigger’ with your solar?

If you’ve been watching the news, you can’t have missed the headlines about the energy crisis gripping the Australian east coast. Energy minister Chris Bowen has warned that the country is facing “a perfect storm” of limited gas supply and electricity price hikes.  The Australian National Electricity Market has been suspended – the first time in the nation’s history.

The upshot for households and businesses?

Most experts reckon we should be bracing ourselves for big electricity and gas price increases over the next few years.  From July 1, the price of electricity will rise by up to 20% in some states.  Those price increases were set before the current energy crisis blew up.  So, chances are, there’ll be more price increases to come.

The best way to protect yourself from soaring power prices is to get a big enough solar power system to provide most of your household energy needs.

But which battery is going to provide you with more power?

The answer is SolarEdge.

That’s because with the SolarEdge Home Battery, you can install up to 200% more solar panels on your home than the capacity of the inverter. For example, if you get a 10kW SolarEdge inverter and a SolarEdge Home Battery, you can install up to 20kW of solar panels.

That’s a lot of solar power; enough to enable most households to switch off the gas and make the move to a fully electric home powered by solar.  And power an electric vehicle (or two).

With Powerwall, you don’t get any additional panel capacity over the normal 133% that’s allowed as standard with any solar panel system.

It’s also worth mentioning is that SolarEdge is that it is panel agnostic, meaning you can install any size or brand of solar panel down the track.  For example, you could start with 10kW of solar panels.  Then, as you make the transition to running your home entirely on electricity, you can add more solar panels later.  Whether they are 390 watt or 450 watt, it won’t matter.

Feature-by-feature comparison: Powerwall vs SolarEdge Home Battery

For those who like the technical nitty-gritty, here’s a comparison of the key features of Powerwall and the SolarEdge Home Battery.

 Tesla PowerwallSolarEdge Home Battery
ManufacturerTesla

HQ: USA

SolarEdge

HQ: Israel

First released20152022
PriceApprox $16,000 + installation before any rebatesApprox $12,000 + installation before any rebates
Battery size14 kilowatt-hours10 kilowatt-hours
Usable storage13.5 kilowatt-hours9.7 kilowatt-hours
Continuous power5 kilowatts5 kilowatts
Works with any solar inverter?Yes

 

 

No

 

Only works with SolarEdge inverters

Can be added to any solar panel system?Yes

 

Easy to retrofit to most existing solar panel systems.

 

No

 

Only works with SolarEdge solar systems.

AC or DC CoupledAC-coupled

 

(Includes a built-in battery inverter)

 

This can be a disadvantage in some areas.

 

It can limit the size solar system you can install because some network distributors count battery inverter capacity towards total inverter capacity.

DC-coupled

 

(Does not have a built-in battery inverter)

 

This can be an advantage in some areas because it avoids size limits set by the network distributor.

 

This allows you to install the size solar system you want (up to at least 10kW, sometimes more).

Add 200% more solar panels, compared to inverter capacityNo – Can only add up to 133% more solar panels

 

For example, can add 6.6kW of solar panels with a 5kW solar inverter + Powerwall battery

 

This limits the potential bills savings you can achieve compared to SolarEdge.

 

Yes

 

 

For example, can add 10kW of solar panels with a 5kW SolarEdge inverter + battery

 

This can provide much greater savings on electricity bills.

 

Plus, you get more STC rebates as STCs are based on solar panel capacity, not inverter capacity.

Suitable for single-phase homesYes

 

Includes full back-up

Yes

 

Includes full back-up if you install it with the SolarEdge Energy Hub inverter and Backup Box

Suitable for three-phase propertiesYes

 

But can only back-up to one phase

Yes

 

But can only back-up to one phase

Can charge the battery from solar panels during a blackout?

 

 

Yes.  But only for single-phase homes

 

 

Yes.  But only for single-phase homes

 

Round trip efficiency

 

(This is the amount of energy that is lost between charging and discharging the battery)

90%93.3%
Dimensions (W x H x D), mm753 x 1150 x 147790 x 1179 x 250
Weight, kg114121
Noise< 40 dBA at 30⁰C< 25 dBA at 1m distance
Warranty10 years with unlimited cycles

 

70% of original battery capacity at end of 10 years

 

Includes labour for repairs/replacements

 

Includes shipping of parts

10 years with unlimited cycles

 

70% of original battery capacity at end of 10 years

 

Does not include labour for repairs/replacements

 

Includes shipping of parts

 

Operating temperature, ⁰C-20 to +50-10 to +50
Add more batteriesYesYes
Indoor or outdoor installationYesYes
MountingFloor or wall mountFloor or wall mount
Battery chemistryLithium Nickel Manganese Cobalt (NMC)Lithium Nickel Manganese Cobalt (NMC)
Fire safetyHas a liquid thermal control system that automatically seals off any thermally unstable cells if they pose a fire risk

 

 

Temperature sensors

 

Built-in fire extinguisher

Eligible for government battery rebatesYesYes
Eligible for Virtual Power PlantsYesYes
Meets all applicable Australian standards and approved by the Clean Energy CouncilYesYes

 

The verdict

When it comes to future-proofing your home, our vote goes to SolarEdge. SolarEdge Home Battery offers outstanding levels of expandability for anyone who wants to make the transition to an all-electric home, powered with their own solar – 24/7.

The main drawback with a SolarEdge Home Battery is that it requires a SolarEdge inverter. But if you’re looking to purchase a solar panel system at the same time as battery storage, that’s not an issue.

However, if you’ve already invested in a good-size solar panel system – 6kW or more – Powerwall could be a better choice.  With Powerwall, you’re buying a well-proven battery that’s tried and tested. The Powerwall monitoring app is best-in-class (although SolarEdge have a fine one too).

Ask anyone who has a Powerwall what they think of it and almost universally they’ll give it a big thumbs up.

So – there’s no definitive verdict. Both Powerwall and SolarEdge are terrific batteries. It all depends on the requirements of your home.

Get the experts on your case

If you’d like expert advice on the best battery for your home, get in touch.  We supply and install all leading battery brands including Tesla Powerwall and SolarEdge.  And because we operate Australia-wide, we know the rules and regulations for each network distributor in in the country.

Don’t leave anything to chance.  Talk to our battery specialists today.

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