How to start the on grid solar power system for 1st time?

The panels are installed, the wiring is done, the earthing is complete, and the solar panel wires are also connected to each other. The smart meter has also been replaced with a net-metering smart meter. The only thing left is that the ACDB MCB is down, and the fuse plug in the MCDB is out.

We got a terrible vendor. He is just not showing up to start the system. So, can we start it ourselves? Is it just a matter of flipping the MCB up, or do we need to do something else as well? Because all the other wires look connected.

Do these solar panels and their aluminum rods carry any electrical current?