LG Chem Launches Residential Energy Storage Systems In U.S.

MAY 11 2017 BY MARK KANE 25

If you make the cells themselves, why not make the energy storage system to go around them?

LG Chem has announced the formal launch of its residential battery systems into the North American market, with initial capacities up to 9.8 kWh.

LG Chem lithium-ion battery cell

These energy storage system are designed for AC- and DC-coupling, and the Korean manufacturer says it is working hard to secure compatibility with third-party components, such as inverters.

According to LG Chem, the company has been awarded 82 projects from 28 global automotive OEMs as of September 2016, and has already deployed many Gigawatt-hours of global stationary battery projects already

“The launch follows successful completion of UL certification and represents LG Chem’s initial foray into the North American residential market. Since 2013, LG Chem has been at the forefront of providing residential battery storage (RESU) systems and has earned a strong reputation for quality, reliability and dependability. The commitment to delivering quality products and services has resulted in excellent annual growth and new business throughout Europe and Asia, especially in Germany, Italy, the UK, as well as Japan and Australia. The residential systems’ pioneering features were recognized with the ees AWARD 2016 and, in the fast-growing Australian market, LG Chem has quickly established itself as the market leader according to EuPD Research.

LG Chem’s North American residential battery range offers AC- and DC-coupled solutions with capacities up to 9.8 kilowatt hours (kWh). Two voltage options are available, pre-matched with compatible inverters and suitable for both indoor and outdoor installation:

  • Low-voltage 48V: with capacities of 3.3, 6.5 and 9.8kWh; and,
  • High-voltage 400V: with capacities of 7.0 and 9.8kWh.

The 400V RESU10H (9.8kWh) product is compatible with SolarEdge’s StorEdge™, which is a DC coupled storage solution based on a single inverter for both PV and storage. Additional inverter compatibility options will become available later in 2017 to provide homeowners with a range of pre-tested solutions from the industry’s leading suppliers.

LG Chem’s residential batteries will be available via a number of leading solar/storage providers in North America. Following last year’s announcement of a partnership with LG Chem, Sunrun – one of the leading U.S.-based residential energy system providers – will be supplying LG Chem’s RESU systems. Sunrun already has installed initial systems in both Hawaii and California. Additional distribution channels are in advanced negotiations and will provide coverage to all U.S. states and Canadian provinces.”

Peter Gibson, Head of ESS Sales for LG Chem in North America said:

“LG Chem’s entry into the North American residential battery market is based on much planning, product development and system testing. We’re confident that our experience gained in Europe and Asia, coupled with strong inverter and distribution partners, will deliver exceptional performance and reliability for our residential customers in the U.S. and Canada. Customers can now enhance the benefits of their residential solar systems by using our batteries to maximize consumption of solar energy, and to use the batteries as a dependable source of energy during grid interruptions.”

Categories: Battery Tech, ESS

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25 Comments on "LG Chem Launches Residential Energy Storage Systems In U.S."

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Great to hear. The more the merrier.

Also this appears to offer the ability to interface with AC instead of DC. While DC is probably smarter (Powerwall uses it) some of us already invested in microinverter-based solar arrays that can’t produce high power DC output, only AC.

So in other words this could be a much more cost-effective solution for people like me (and I’m not alone) than a Tesla Powerwall 2 is.

Powerwall 2 is now AC only.

I believe it still takes DC input only.

As someone who basically has micro inverters I was wondering about that. Interesting to know these can take AC. Honestly never looked in to it much but I was hoping you wouldn’t have to put something that converted it from AC to DC.

This link says that I’m wrong and Tech01x and Hank S. are right.


I guess I didn’t have anything to worry about all along. And neither do you. Great news!

I just signed up for a micro inverter system and looked into this. The DC version was discontinued for most of the world last year. The AC version with its own inverter will work with our microinverters and pretty much any system.

Hank, unlucky,

I also have micro inverters and last I looked it was expensive to hook them into a ESS. It was less money to go to a single inverter and bring DC back from the roof.

I’d have to study it again but sounds like you guys are saying this would work easily with my existing micro inverters.

Can’t say I’m totally thrilled with Enphase though. I’ve had my system in for around 6 years now and have had 3 inverters fail. Plus Enphase has turned into a big PITA as they won’t deal with homeowners any more only certified electricians. I’ve always changed my own inverters up till now. It’s easy and I don’t want to hire an electrician to do it.

It depends on how many panels you have. I believe with DC the voltage can quickly get too high and you have to use special wiring and that raises the cost. This is especially the case if you already have AC-capable wiring (as you do with your microinverters). If you have too many panels you have to rewire the system and that adds cost.

14 , 210’s unlucky

I have 39 micro inverters! Hopefully the newer ones M215 are more reliable. It’s been only a year but without any issues, great having the monitoring and data that comes from it too.

I have 215s got them when they were just out (years ago). I had one die within the first year and no problems since.

What is the price for these in the US? In Europe, the 7kWh RESU is selling for 4,798.10 Euro’s or $5218 dollars. Tesla’s 14kWh Powerwall is $5,500. Who would buy half the energy storage for the same price?

RESU10H with 9.8 kWh nominal sells for 5042 EUR including 19% VAT. 4236 € without VAT.
But you can shop for it, it is not direct sales.
21.7MWh throughput up to 10 years warranty for 80% of 9.8 kW

Powerwall 2 with 13.5 kWh usable is 6.750 € in Germany including VAT, plus 900 € – 2.300 € for installation according to Tesla site.
37.8 MWh of aggregate discharge throughput warranty up to 10 years and 70-80% of kWh

Both are around 500/kWh. Powerwall is marginally cheaper per kW without installation, but more expensive overall. You would better shop on cost and payoff time of the whole project, if you need it.

Could be interesting if you already have an inverter, and don’t have to add one for an extra $3k.

I presume this product is RESU10H ? I saw one on gogreensolar.com for $7k.

Will be interesting how they plan to compete with powerwall 2 which is $6200 for 14kWh including the inverter.

In Germany it seems to be a bit cheaper than the powerwall, but not really worth the savings, since you get 4kWh less.

But the smaller applications should be really interesting for people that don’t need 14kWh, or more.

For anyone looking for more than 10k, especially if they don’t have an inverter already, the Tesla Powerwall is pretty much unbeatable.

Can’t confirm your relationship to tesla
I own since mai 2016 an liebe Grüsse RESU and started with 6,4kw Batterie
Till now i upgrade it up to 12,8kw and i’m very satisfied with this unit in SMA Environment
Would post you my Energybilance but no idea how to post it here.
Last Month i took 4kw from my energy-provider and that’s very nice ?
Any Questions?
Greetings from Autria/Europe – Mike

Sorry liebe Grüsse comes from automatic wording and means LG RESU

Liebe Grüße zurück Mike,

How much did you pay for those 12.4? The new 14kWh Powerwall starts from 6,300 € in Austria, were you able to beat that with the LG battery? If so, where did you buy it? When I looked they asked 4000 per RESU 6.4, in Germany.


Ich have finnischer Philosoph wurden I fordert zu Change Ehe Landtage…

Liebe Grüße 😉

Lead acid (costco gc2) will run you about $750/10kWh (5 usable), plus inverter. Seems like these powerwalls are getting cheaper, but what is availability like?

How is there NO mention of price in this article? Obviously the first thing everyone wants to do is compare it to the price of a Telsa Powerwall. Good to see more Energy Storage but we need some #s to make the case for them in conversation. If it’s 10x a powerwall this is no news, if it is cheaper than a powerwall this is great communication tools.

For off-grid solutions, I think it will be cheaper to find crashed chevy bolts with good packs, and put their battery packs into use for home storage. I saw one Bolt in great condition at auction which sold for 17k. These little LG 10kwh packs are not that useful in my view for the money, after all the install and extra inverters and parts. If you read carefully, most of these little packs are only meant for on-grid, single circuit, like a kitchen. Netmeetering is slowly going bye-bye, so going off-grid with solar and really big batteries is looking better and better.

I was thinking 60kWh is a bit overkill for household use, especially in Europe where we are far more conservative with power. Then again if you need to charge your EV or two of them, then 60kWh would be great!

Yeah, having a couple EVs really changes the equation if they are both away from the house during the day.

VERY NICE more competition is good.