We are still waiting on some specific Tesla Model 3 charging details, as well as a few other specifications (including battery capacity), but ChargePoint tries to educate new owners, and naturally encourages them to use its 39,900-point strong network.
ChargePoint is often free or even cheaper than charging at home: the average Tesla charging session on ChargePoint costs just $1, and 80% of Tesla charging on ChargePoint has been free.
The Model 3, as with Model S and Model X, will have full access to Tesla's Supercharging network, but the service is more designed for long distance travel, and in the case of the Model 3, will be pay option to some degree.
It's still an open question whether Tesla will offer some free package, like 400 kWh annual limit in the S & X (again, when Tesla isn't giving away lifetime charging as a sales promotion).
At some go-to places (hotels), some Model 3 owners will also find Tesla destination charging stations.
However, there is also plenty of other non-Tesla charging options - at home, work or public charging - AC (with J1772 adapter) and DC (with CHAdeMO adapter).
ChargePoint estimates that the Model 3 will be able to add 25 miles of range every hour of public AC Level 2 charging. (The total range of Model 3 is 310 miles in the "Long Range" version, and 220 miles in the base set-up).
An interesting state given by the charging provider, is the cost of public charging through ChargePoint - notably that up to 80% of the Tesla charges to data have been free, while the average cost for pay stations was $1 per session.
"Charging at home costs about half as much as filling up with gas. Using ChargePoint is often free or even cheaper than charging at home: the average Tesla charging session on ChargePoint costs just $1, and 80% of Tesla charging on ChargePoint has been free. Charging around town is affordable because the various types of business owners who install ChargePoint stations want to attract customers: restaurants want diners, stores want shoppers, companies want happy employees and apartments want loyal residents."