I’ve disappointed with everyone’s willingness to perform and accept napkin math for supercharger costs. Don’t take this personally, as everyone seems to do it. Unfortunately, I believe that
SC costs are MUCH higher than most estimate. Nearly all SC are driven by the grid which means you pay what the local utility requires (and they are pirates). Supplying 250kW times N stalls during a busy time is a HUGE current/service draw with, very likely, HUGE
demand fees. Also, since all these SC are not centralized, but distributed by necessity, if they were to benefit from solar and/or battery storage, it will likely be localized to
each SC. And those powerwalls that we the people buy for $7.5K, they are only 14kWh each, so you’d need 5-6 of them to store the equivalent of ONE LR M3/MY. Powerpacks store ~20X that of powerwall, but cost ~20X more. Also, 1 powerpack still only discharges at 150kW max. These capital investments for solar and battery storage at SCs are HUGE.
Look, I’m NOT saying SC profit model is “broken”, rather MUCH more complicated than I’ve seen anyone estimate. Many people think that the SC model becomes similar to gas stations, but I disagree. Gas stations NEVER had to compete with what the average customer could refuel for at home. If I can pay $0.13/kWh at home (lowest TOU), I won’t pay $0.75/kWh at a SC
unless I have to. I am only a SC customer, rarely, during extended travel.
I was always a gas station customer. Gas stations didn’t have home competition. I think SC will never scale to the quantity or profitability of gas stations due to this, IMO.
I would like to throw the gauntlet out to the detailed data miners & analysts that read this thread (there are many )…..put together a rough analysis of these costs, including solar, battery storage and grid demand charges to guesstimate the required cost per kWh to see what margins are possible.
This is where I got some of my powerpack/powerwall specs/costs