If a project installs a PV system but sells a SREC for that system can it still qualify for EA c2?

The letter template has a sign-off for the owner/agent to declare that the renewable energy source (in my case PV solar thermal) is 'installed by substantial completion of construction.' We will be

If the RECs are sold (solar RECs) is there a requirement that the RECs HAVE to be solar, or can they be any kind of RECs (wind)?

Does this credit require the sum of ALL energy uses (electricity, gas, etc.) for the proposed building be the basis for determining the renewable energy percentage or is it just the electricity use

If a project includes a 3rd party PV system, and the electric rate increases each year after the 1st year (under the PPA), what rate must we use in calculating the dollar savings?

Is there any way to involve a PPA (Power Purchase Agreement) or similar funding mechanism for EAc2? The language in the guide is not specific, as they mention a "energy system owner".

How to keep birds away from PV panels on the roof - any suggestions?