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People put money down for the Tesla Powerwall 10kW. I also just found that the 7kW Powerwall is really 6.4kWh. It also has a maximum draw of 2kW. You need multiple units just have enough power to do, well, anything.
A Mi-Grid 2000 compares to about 4 Powerwall units. Powerwall is JUST a battery pack. You need to buy inverters, transfer switches, ,etc. AND THEN you have to have an electrician design the system to install it into your house. And a plumber to hook up the cooling water. Yes, cooling water.
A Mi-Grid 2000, complete with 8kW of solar, installed, will run roughly $45K (including a backup generator), depending on how much the solar installer, uh, "sexes" you. A similar Powerwall system would be a minimum of $60K.
Mi-Grid has 38.4 kWh of storage with 19.2 kWh in the normal usage range. The TPW has 25.6 kWh and 23kWh in the usable range. Cycle life is similar. But in an emergency, you can use all 38.4 kWh on the Mi-Grid.
I wish I had their marketing machine!
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James
The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
Red-beard for President, 2020
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