The way the industry is structured from my experience the electrician often 'may' oversee the project, but typically you engage with a 'turnkey' solar type company to do all of the following:front end financial analysisget through the regulatory process and most utilities require filing what's called an 'interconnection agreement'bring in an engineer like me to draft plans, as requiredthen once the interconnection has been approved, they shop the install to an electricianoften in house resources from that solar company are used to actually mount panels and do most of the LV wiring, and they will leave the 120/240 etc wiring to the electricianGranted, the above process unfortunately has a lot of 'soft costs' built in that drive up the cost of these types of projects for a homeowner, but they still do pencil out in some cases.  

This isn't a coincidence as that is the exact same time that the national debt began to spike upwards.  30Yr interest rates:  https://fred.stlouisfed.org/se...US Debt to GDP ratio:  https://fred.stlouisfed.org/se...The entire financial system is interconnected, stocks, bonds, interest rates, whatever. 

If I were to map our all of the interconnections between customers and referrals in my service business over the past 10 years, it would look like one of those chaotic tactical FBI crime web boards from the movies where the lines crisscross too much to even track. 

There is an interconnected group of players there, and I bet you and I  have come across the same names.

The state as a whole was late to the game in establishing net metering policies and statewide interconnection agreements with a few exceptions in certain areas.

So, I will have 3 inter-connected cabins.

I suspect you will also have to get hard-wired and interconnected smoke detectors installed since you are in the process of re-wiring.

Not sure about those two cities, but some require hard-wired, interconnected smoke detectors - costs more to put in than regular battery operated...Also, generally to North Texas:  it gets damn hot down here, so HVAC systems take more of a beating. 

There are 2 situations: $700K & they didnt want us to interconnect with the PI, but we were doing all the logistics & due diligence.$250K - we find all the properties & they are just referrals & we interface with them directly!

@Jennifer Stillman Two of the major issues you'll deal with will be, is your lot big enough for the new parking requirements (with the 3rd unit), and that you'll need to confirm to 3-family fire coding rules which will mean hard-wiring the detectors so they become interconnected, which can be some expensive electrical work.You can view the zoning ordinances for Providence online but like most zoning rules, they're a little terse and hard to navigate, at least until you get used to them.I would not plan to try to find a 2-family you can convert to a 3-family because it's an uphill battle.