Northwest PowerPool History
The Northwest Power Pool, in the form of the Operating Committee, was established in 1942 to serve as a forum for the Northwest’s electric utilities to more effectively coordinate operations and ensure reliability. In 1964, with the signing of the Pacific Northwest Coordination Agreement and formation of its Coordination Contract Committee (now known as the Coordinating Group), the Pool’s staff was given the responsibility of conducting the studies necessary to put together an annual plan for operating the NW’s coordinated hydro system, and for facilitating the planning process. In 1990, a Transmission Planning Committee was formed to serve as a forum to assist in promoting the coordinated planning of the Northwest’s transmission system.
| 1918 | - | Puget Power and Washington Water Power create first northwest interconnection |
| 1923 | - | Seattle and Tacoma interconnect |
| 1938 | - | Puget ties to Seattle |
| 1941 | - | Six Company Pool Coordinating Office established in Portland |
| 1942 | - | War Production Board Order L-94, NWPP Operating Committee officially formed |
| 1964 | - | PNCA signed, Coordination Contract Committee (CCC) formed |
| 1990 | - | Transmission Engineering Committee (TEC) formed |
| 1994 | - | TEC transitions to Transmission Planning Committee (TPC) |
| 1995 | - | NWPP Agreement becomes effective December 22, 1995, opening membership to new participants in the electric power industry. |
| 1999 | - | NWPP incorporated April 22, 1999 as a nonprofit entity. |