Hard to tell from the photos, but there is probably a 4" to 6" drop from the top of the concrete to the top of the rust colored earth/dirt.
It looks like most of the soil has been replaced and compacted around the bases of the charging stanchions, and for all the electrical conduit runs.
If the two new piers are located close to where the square wood forms are, they will then probably be hand-dug for a bit (to ensure no conduit runs are damaged), and then a drilling rig will come to finish boring the piers.
The frame at the left has a stake in the middle of it, so that might be the desired location of the pier.
The rebar cages will be lowered into the holes and the concrete will be placed almost immediately to prevent earth sliding in from the walls of the newly dug piers.
Top caps on the piers may be either circular or square.
Circular shape would be formed inside of a sonotube.The three or four conduit stub-up on the left next to the raised concrete platform (with electrical equipment) will probably feed up to the PV/solar panels on the roof of the canopy.
Another Option might be that the piers will be dug right next to the existing building at the rear of this area.
If so, the piers may be located very close to the front edge of the existing paving, or possibly even removing additional paving and drilling through undisturbed soil to get best results.
In that case, the electrical stub-ups might be reworked/relocated to coordinate with the pier cap and column location.
After the pier caps are poured and set, there will probably be some sort of additional rebar grid laid out and tie-wired together which will be embedded into and re-inforce the new paving area.
There is a site drain half-in/half-out of the existing paving: the Contractor will need to ensure that the new concrete is tapered with proper slope for good drainage.
Lastly: in the middle picture I do notice a third wood frame on the far left.
I wonder if there will only be two piers or possibly three?
Previous photos indicated only two rebar cages, but stuff happens.
If so, the extra canopy area could shade the Electrical equipment (keeping it cooler), and the extra roof area could have substantially more PV panels installed to generate electrical power.