Check Out This 100 kWh Tesla Battery Energy Storage System


It’s like seven Tesla Powerwalls in one unit.

EVTV (Electric Vehicle Television) offers, in its online store, a wide variety of products. Some, like their flexible 200-watt solar panels, are sourced from other companies, some, like Tesla motors and batteries, are from salvaged vehicles, and then there are a number of items which the outfit pieces together themselves. The Powersafe 100 falls into this category.

What we have here is a large box — a 12-gauge steel Wiegmann NEMA enclosure, to be exact — with shelving that holds 100 kWh worth of Tesla battery modules, along with a charger and inverter.  EVTV principal Jack Rickard, came up with the concept to support his “Selfish Solar” concept. Basically, since power utilities have greatly reduced or eliminated money it pays from home solar energy production, he advocates using all the energy you produce yourself and not going through the trouble of exporting it to your local utility.

Since the sun doesn’t shine at night, one needs to store some of the energy produced during the day, and to do that, the most practical way is in a battery. For some, the Tesla Powerwall or similar product might fit the bill. For others, with huge arrays and a large amount of energy consumption, something a little larger is needed. Enter the PowerSafe 100.

The video above walks us through all the details of the system. Although it may lack the polish offered by typical OEM products, it does seem as though they’ve taken safety concerns into consideration. You can get all the details by watching the first hour of the video above. You can also head over to the EVTV website and read about the system in the blog entry titled “100kWh Tesla Power Wall on Steroids. The PowerSafe 100.” Though it has yet to appear in the EVTV Store —  there may be a little development left — the price seems to be $50,000.

From the video description:

We introduce the EVTV PowerSafe100. This is a single box with inverter/charger, 20 Tesla Model S battery Modules in a refrigerator sized device on wheels to store solar energy in an AC-Coupled Solar System. This one device can turn any grid-tied solar system into a SELFISH SOLAR battery power system easily.

Source: YouTube, EVTV

Categories: ESS, Tesla, Videos

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12 Comments on "Check Out This 100 kWh Tesla Battery Energy Storage System"

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Dan F.

Sounds like a lot of money at $500/kwh if it really costs $50k. I don’t know where these guys live but in PG&E (NorCal) territory they still take your excess production (up to your yearly use) and send it back to you anytime. They act as an effectively unlimited size battery that you don’t have to buy. To achieve this effect on a moderate demand home (say 300 kwh per month) at +/- 38 North you would would need a roughly 1 mwh battery with near zero standby losses. This battery is nowhere near a full (seasonal that is) substitute for utility interconnection though it could work on a weekly or biweekly basis. Too expensive for that scale of benefit IMHO.


The problem was that all the extra power they created the utility was charging them for it, as if it came from the utility,
like Jack said in an earlier episode, so he decided to simply store the excess power they created instead of sending it back to the utility, and going round and round with the utility trying to straighten things out.


You need to redo your math and realize the sun continues to shine every day. A 100kWh battery is HUGE for a modest off-grid home. I easily run a rental on 32 kWh in PGE country. I spent less than $5k.

A problem with no batteries is that you won’t have any power when PGE goes down.


You need to do the math and realize that not everyone is in the same situation.
I’ve got a 2,500 sq ft home in the MidWest. Electric water heater, electric heat pump, and 2 electric vehicles.
100kWh seems just about right.


Before we got electric cars, and when we heated with natural gas – we used about 650kWh a month. That is a ~1670 sq ft home with 4 people.

We got two electric cars, and a typical month went up to about 1150kWh. Then we got mini split system, and replaced the gas water heater with a heat pump unit – and an average month went up to about 2300kWh. In the coldest part of the winter, we use as much as 3400kWh a month.

Our gas bill almost disappeared – we only use it for cooking and our clothes dryer.

We got a 10.1kW solar PV array installed in April – and it has produced an average of 40kWh a day. The total is now about 4.3MWh, and the yearly total looks like it will be about 14MWh. So far it has produced about 75% of what we have used over that period of time.

The other thing we will be doing is adding R72 roof insulation, which should drastically lower the energy we need to keep the house warm in the winter.

“he advocates using all the energy you produce yourself and not going through the trouble of exporting it to your local utility.”
What trouble?
Also why would anyone get this at $50k for 100kWh and not 7 powerwalls $46k for 95 kWh? Looks like it’s portable so i guess that can be a plus.


Wow… 100 kWh. That’s my home consumption for 12 days in summer with AC on.


You probably will get some sun if the AC is running so solar panels should help you make it much longer! Granted, many people will need 10x as much batteris, but there will be folks that 100kWhr be what they need. I have seen 50k bills from electric utilities to put in poles for remote locations.


Their system is for commercial users.
I use about 180kWh a month, but then I am a low consumer.
I think average for a household, is around 800 kWh/month, so your consumption is very good.

John Norris

How many kWh of fat are those two guys packing?


That is their personal “strategic energy reserve”.

Wait till you hit 50 or 60. I creeps up on you. Well, a lot of us.