The Western Energy Imbalance Market (WEIM) was
launched by the California ISO in 2014 in partnership
with PacifiCorp, to leverage geographic and resource
diversity across the western states. The real-time wholesale
electricity market has generated gross economic benefits
to participants totaling more than $2 billion; enhanced
regional efficiency of energy dispatch; supported the
reduction of carbon emissions; and given system operators
valuable, real-time visibility across the western grid.
https://www.westerneim.com/Documents/WEIM-2-Billion-in-Benef…
Check out the nice map (in the link) of all the Western utilities/grids that have joined to make this happen.
Jaak