cholo provided you factual answers. they are happening NOW. 

as cholo already explained, a self-supply system owner does not export excess electricity back to the grid. you already understand that as you stated power only flows in one direction. that is true, it only flows from the grid to the customer. that right there benefits all ratepayers as the rest of us are not burdened with purchasing expensive excessive electricity. everyone would rather purchase power from cheaper power producers like aes or kalaeloa.

to explain tou further, that benefits both the customer and the rest of the ratepayers. the customer will benefit by choosing to purchase electricity at lower rates. that in turn benefits everyone else in terms of grid stability by not placing a demand for electricity during times where power production is relatively weakest, at night with no solar power generation. which is exactly the purpose for the tou program.

what part of cholo's answer did you not think is reality?