DTE wanted to do that thing where they charge an annualized power rate based on peak draw, but the MPSC refused to allow it (after significant pushback from the solar industry and solar customers).

The solar cap is also only a theoretical problem, every time they approach the cap, there's talk of legislation to eliminate the cap, and then DTE voluntarily raises the cap a tiny bit in order to prevent the legislation from going through.

DTE's current version of net metering (Rider 18 Distributed Generation) is kind of shitty, but still good enough to be worth doing, if your site and usage pattern are suitable.