This would depend on (a) the law where you live and (b) how competent you are regarding electricity. You haven’t said which country even you live in, but looking at your IP address, you can’t be many miles from me. You don’t by law need to get an electrician in, but if you’re not sure what you’re handling, then for your safety you should.
One small point: You wrote
“positive” infers the d.c. side. No transformer works on d.c., so you must not attach a c.t. on the d.c. side, between the panels and the inverter. It must go on the inverter output where it is a.c., preferably (but not necessarily) on the Line (brown) conductor.
You can use the pulse sensor on your generation meter. Obviously it will record a unit of generation only after the event, and it records energy rather than power (meaning that the two quantities you’re interested in are in different units, so a conversion is needed before they can be compared), but other than that, it should give you meaningful results. The emonCMS experts will give you the detailed steps needed.