Isn’t it backwards? If everyone had a little bit of home generated power, then the actual energy part of the bill becomes smaller, and the cost of transmission becomes an even greater fraction of the total cost.
And since transmission cost is typically bundled with the energy cost, it means the final retail energy price has to go up to cover the transmission cost.
With less energy drawn over the wire, the transmission cost goes down since less transmission infrastructure being used. The overall transmission cost should go down as well since there's less need to expand the transmission infrastructure.
> The overall transmission cost should go down
Why? Overall transmission cost are defined by highest possible consumption, and solar panels have practically no effect on that parameter.
In places where people run airconditioners, they do have an effect. Peak consumption coincides with peak solar generation.
Not perfectly though - your air conditioner will keep running for several minutes after the sun goes behind a cloud.