Elon Musk's, SolarCity, is building a solar panel factory in Buffalo bringing 1,500 or so f/t jobs and it is looking like a great opportunity for green energy developers.

I’m looking to buy a house now in Philly with knob and tube the seller is putting in a new service line and panel.

@Eric Hathway A lot will depend on what tax credits you can get.I purchased and installed a 48 panel farm on one of our barns. 

If your panel is inside the garage, you can add a 240V outlet underneath the panel if there's room and at a minimum it should cost $350 and I had people quoted me for $500.

Walking through the home my first time was exciting for it had many opportunities – smoked in for years, old gross carpet, wood paneling walls, no light fixtures in half the rooms, sloping floors, minor water damage in the ceiling, old smoke stained acoustic ceiling tiles, etc.However the foundation was in good condition, roof was replaced 2 years ago, water heater last year, plumbing and electrical both updated, and a 20 year old furnace.As my realtor described the property – “it needed a lot of lipstick.”

From there solar panels and a Tesla Powerwall can be installed.

There are facebook groups, nextdoor groups...After hours emergencies: well, document/know your water shutoffs and electrical panel locations for example.

I am very thankfull for any answers.Please copy the text into the answering post and answer each question with this sign< behind it , so I will understand it better.Thank you so much for anyone that is able to answer me .With best regards Panele

Without answering your question directly, here are some the thoughts just off the top of my head.Look at the last tax assessment for the % land compared to the structure %, then figure the market value of the place unburned.apply your land %.Less Scrape Cost to get the old debris out to the dump (including any insurance needed to have workers on the site).Can you reuse the utility meters, drop and electrical breaker panel--if so keep them.Same with kitchen and bath things.This will give you what I'd call "Preliminary Reference Book Value" for the lot--post loss. 

Assuming they are glued to paneling or drywall you would scrape and break them off unless you want to save them which will be much more difficult