Fortress Power has released its latest lithium-iron phosphate battery for the residential and commercial markets — the eVault Max 18.5.
The eVault Max is expandable from 18.5 kWh on up to 370 kWh. It comes with a standard 10-year warranty with 6,000 cycles.
The battery features a top-cover for easy serviceability. The floor-standing unit weighs 476 lbs.
Interesting, I searched around for Eason Fortress Power and found one site that says you can order these energy storage cabinets of 18.5kWh for $13,420 each, three or four of these go from $40,260 at 55.5kWh to $53,680 at 74kWh. If you go by the actual company site they say up to 370kWh or 20 of these energy storage cabinets for $268,400.
This search lead to another article that says this particular setup is around $671/kWh, I believe this was installed. But simple price divided by kWh comes up to $725/kWh. The question is do you get a ‘better’ deal buying from the manufacturer? It seems (on the surface) that the manufacturer has many pdf manuals available for download that guides one into ‘best practices’ of connecting this energy storage cabinet in series as well as into functional energy blocks for a custom home or small business system. This is another recent product that needs to be considered when one wants their off grid or grid agnostic system for personal use. At least five or six of the most popular inverters have pdf’s on the manufacturer web site in how to connect the inverter technology to the energy storage technology. From just 10 years ago, when the term smart ESS began the new ‘buzz’ word, also meant expensive installed, anywhere from $1,300 to almost $2,000/kWh. Now those technologies have become building blocks that allow some custom systems for less. From what TESLA has been doing, home energy storage with 4 power walls and up to 54kWh of available energy storage is starting to become a ‘new thing’. This kind of build will push the size of the home energy storage system out to the 60kWh and beyond size. When you get to this point, integrators will start producing full blown micro-grids with smart energy management software built in.
I’m afraid to ask the price, but the specifications and capability with some of the top brands of inverters in the marketplace makes it attractive if one wants to build their own microgrid.
Hi ,what kind/brand of cells you used for building the ESS ? cylindrical cells or prismatic cells ?
Eason, Fortress Power uses prismatic cells.