&gt; Is your $0.11&#x2F;kWh price just for the stored amount at $200&#x2F;kWh? That conversion factor to kWh-stored prices is more favorable than I&#x27;ve been using, as I&#x27;ve been assuming about ~1000 cycles worth of storage, but then I don&#x27;t really have a good number for that.<p>Yeah. I don&#x27;t really have good numbers but Powerwalls have a 10 year guarantee iirc and many batteries have a 5 year guarantee so I was using a higher number.<p>&gt; Solid pricing information for large quantities of batteries is hard to get, but GM recently disclosed their price to be $145&#x2F;kWh, and apparently LG Chem&#x27;s other customers are paying around ~$100 more&#x2F;kWh [1].<p>GM isn&#x27;t selling it to consumers at $200&#x2F;kwh but is buying them from LG Chem and its a deal for far larger production runs. GM is going to get a much better deal than you or I [who will only buy a single bank of batteries every 5 years].