Excess Generation Capacity

Excess Generation Capacity

PSE strives to keep its available power supply in relative balance, year-round, with customers' electricity demand. At times, however, PSE may have excess power supply available to other utilities or power marketers. For instance, in summer months when Northwest electricity usage is low, PSE may sell surplus power. Conversely, in winter months when Northwest usage is high, PSE may purchase additional power. The result: more efficient and cost-effective use of the region's power-generation and -transmission resources.

Estimated excess generation capacity for September 7, 2008 is 450 mw.

Estimated excess generation capacity for September 8, 2008 is 450 mw.

This is a preschedule estimate, and subject to change in real-time, due to changes in load, generation and firm contracts.

Conditions:

• Tariff will be WSPP with price and other terms negotiated by mutual agreement, but alterable only by meeting the public interest standard.
• Transactions under this order shall be scheduled in accordance with WECC scheduling practices.
• All thermal generation will be available on a non-firm basis only and all other generation may also be limited to non-firm sales depending upon the ability to undesignate the resource. All such non-firm sales will be subject to recall by PSE schedulers.
• Power is offered at the generation busbar. All transmission must be acquired by the purchaser.
• All potential sales are subject to availability of fuel (i.e. natural gas).
• All transactions are subject to buyer meeting PSE credit requirements in advance.