Our recent trip to visit new wineries in Baja's Valle de Guadalupe revealed they are in the fore front of saving water and electricity.  Finca La Carrodilla is an example.  The winery has been built in several levels which has allowed gravity to be used almost exclusively in the basic processes of making wine. 
The top level is used for the crushing of the grapes and the juice is then drained to the level below for fermentation in tank or barrel.  Then a level still lower is used for the long time storage of the wine or for immediate bottling.
We can only recall one winery in California that is using this electric power saving system.
Fernando Perez Castro, son of the owning family of Finca La Carrodilla, was our host to show us not only the facilities but to taste some of the wines currently being made there.
Besides being practical and functional the winery shows a splendid architectural style.