It's obviously entirely your decision.But we are - being on BP - running a business here and (unnecessary) costs are the killer of every business.

:The rudeness is really unnecessary and borderlines on trolling.That aside, the poster you elected to quote and insult is from Ontario, Canada and, unless things have changed significantly in his province since I last looked into the benefits of photovoltaic panels there, his statements are correct for his jurisdiction.Since you appear to be certain that installation of photovoltaic panels are cost effective everywhere, even at small scale, and that their installation will lead to the ability to collect higher rents, please provide us with details of how this is accomplished. 

That kind of contingency is unnecessary and could delay or even break the deal.Tenants in place are easy to deal with.

We hope people are good, most are, unfortunately many tenants are liars, this should be a good learning experience for you.It looks as though you have spent lots of unnecessary money on this situation, don't let that happen again.

Landlords - do you do any unnecessary updates during tenancy if your tenants request it?

We can track the quantity of work orders submitted and assist with troubleshooting anything a tenant submits to avoid any unnecessary repairs.By the work order- You submit a work order and put down a deposit for the job (varies by job).

@Elizabeth Garcia, it adds an extra (unnecessary) step to the process.

Don't surprise the tenant with unnecessary intrusions.

Your lease should have a clause that states tenants will be charged for unnecessary trips.

I often break it down into the "five pillars" of protecting your assets.1st pillar is avoiding unnecessary and risky activities (don't drink and drive, insurance generally won’t cover your poor decisions) and take good care of your investments - these simple steps will help you prevent lawsuits before they even occur.2nd pillar is a good insurance policy as that cover the majority of your exposure.