In Chelan County, electrical power is generated at one of the PUD’s three hydroelectric projects: Rocky Reach Dam
, Rock Island Dam
, and Lake Chelan Dam
The power generated at the hydroelectric projects moves at a high voltage to a transmission switchyard, where electrical voltage is reduced by transformers. The power then travels along smaller transmission lines to distribution substations throughout the County.
When the high voltage electricity reaches the substations
, it is transformed down to a lower voltage appropriate for distribution. Finally, power travels along distribution lines that may be overhead or underground. It reaches smaller transformer, where it is converted to a standard voltage for use in a customer’s residence or business.
Maintaining the Electrical System
The PUD regularly performs upgrades and maintenance on the power system to maintain reliable electrical service for our customer-owners. Visit our In Your Neighborhood
page for more information about our current projects!