The northbound side has the original couple of Electric Highway 50 kw units I believe. I heard last spring that there were charger works in progress on the southbound side, but that turned out to be an improvement to the Tesla site to prevent the queuing that had happened there the previous New Year.
Northbound is not so bad in general because Burton-in-Kendal has a decent set of Gridserves. Southbound has been a bloody desert from Carlisle to God Alone Knows Where, although recently there has been some improvement at Southwaite. I have since heard that there might be some Gridserves going in on the southbound side at Tebay, but no confirmation of this.
I don't think Tesla will open the Tebay site, it's too busy with actual Teslas.
For me, Tebay would be just nice for a southbound stop on my winter range en route to Halifax. In summer I can make Kirkby Lonsdale, or if I'm heading for the True South, I can probably make Forton. Which is still a dump, but it is now a dump with chargers.