It appears that this all hinges on the definition of a "Developer" which is given as follows in the SGIP Handbook. I've highlighted and italicized what seems to be the most relevant text:Just talked to my local SGIP administrator and he acknowledged that other installers are essentially gouging consumers when compared to Tesla's costs. When asked if I could be a self installer he said they are actively looking in to those and for at least the Powerwalls as it's known that Tesla won't sell to a homeowner directly for a self install they would not be approved.
He understands what everyone is trying to do, i.e. get a Powerwall installed for a reasonable price and get the SGIP rebate but if Tesla isn't going to apply for the rebate for you it's highly likely you won't get it if you have them install your system which they would know not just because Tesla won't sell to you directly to install but also because of the documentation you have to provide they can see that Tesla installed it.
4.1.5 Developer
A Developer is the corporate entity that holds the contract for purchase and installation of the system, and/or alternative System Ownership Agreement (such as a Power Purchase Agreement) with the host customer and handles the project’s development activities. The Developer must fully disclose their participation in developing the project and/or ownership in the project, or that of a combination of affiliated installers/developers. The customer contract will be verified at Proof of Project Milestone to confirm the Developer’s representations. When applicable, the Developer cap will apply to any combination of affiliated developers under the same majority ownership.
My observations and thoughts are:
1. It's clear from elsewhere in the SGIP documentation that a homeowner can be a "developer", at least in some situations.
2. A "System Ownership Agreement" with the host customer is trivial if the developer is the host customer.
3. The sticking point may be "handles the project's development activities". I'm not a lawyer, but it seems to me that this should be interpreted in favor of homeowners regardless of which company performs the physical installation. I would consider a homeowner who performs the following to be engaged in "development activities" at the highest level of the project:
(A) Research available battery technologies, assess site electrical usage and generation, and determine to install a battery system.
(B) Become familiar with available government incentives and local utility policies.
(C) Contact potential installers, solicit bids, and initiate a contract with an installer.
(D) Provide site details to the installer and decide on installation specifics such as location, number of Powerwalls, and backed up circuits.
(E) Monitor the installation for satisfactory performance and aesthetics.
(F) Plan to comply with government policies governing system use (i.e., charging only from renewable generation if applicable).
It would be great to see SGIP issue clear, written, unified guidance on this topic. The rule of law should be our guide, not the inclinations of one particular administrator.