Okay, first off, let's include what you omitted:
Supercharger connections (the first actual stat that matters): +34%. Why do you care about the number of Supercharger
stations, rather than the number of
stalls?
Mobile fleet: +81%
So the # of service centres is only up 13%. But the mobile service fleet growth vastly outpaces vehicle sales growth. I see no problem. They're doing more and more with mobile vehicles these days. Also, the growth in the number of service centres says absolutely nothing about whether they're hiring more people to work at existing service centres. Adding
new service centres is just to increase geographic coverage.
Back to Superchargers. Here's the things you're not including:
- Power was upped from 120kW to 145kW (ignoring the relatively small % of V3s out there). In ideal circumstances, that's an extra 20% throughput. In practice, you're probably averaging more like 10% of an increase in throughput. But in general: the sooner you move out a car, the sooner a stall is free.
- Pack preheating as you approach a Supercharger (to accelerate charge rates) is now enabled. This also speeds up Supercharging, and thus frees up stalls.
- The vast majority of the world's Supercharger stations spend most of their time idle. There is no need to increase the density in these areas until they hit their limits; the amount of vehicle growth just moves them from "mostly idle" to "not as idle". Supercharger growth is only needed to A) expand the geographic extent of the network, and B) in areas where the existing network needs more capacity.
- They're now switching to V3 stations. With a 250kW peak and no throttling between "shared stalls", V3 will have much higher throughput per stall than V2.
Overall, I think these numbers are great, all things considered.
ED: Whoa! Just checked Supercharge.info... they're already building in both Macedona and Bulgaria? Awesome! They'll be in Greece and Turkey soon!