Pacific Northwest Power System and Wind Power Development
- Slides: 15
Pacific Northwest Power System and Wind Power Development Jeff King Northwest Power & Conservation Council June 2010 1/5/2022 1
The Western interconnected power system Pacific Northwest Region Strong transmission interconnections: British Columbia (2000 MW) Bay Area (4900 MW) LA Metro Area (3100 MW) 1/5/2022 2
Alberta ESO Natur. Ener Power Watch WECC Balancing Authorities & ISOs California ISO 1/5/2022 3
Northwest generating capacity (MW)* * Operating and under construction July 2010 ** 16% of regional peak hourly load 1/5/2022 4
Northwest* generating capacity additions * WA, OR, ID & MT (incl. MRO) 1/5/2022 5
Cumulative Northwest* wind plant additions * WA, OR, ID & MT (excl. MRO) 1/5/2022 6
What drives wind development? • • Lowest-cost renewable available in bulk quantity Renewable portfolio standards (WA, OR, MT, CA) Flexible California RPS energy delivery requirements Federal and state financial incentives (PTC, ITC, BETC) • (Generally) quick project development and construction • Rural economic benefits + green tinge = strong political support 1/5/2022 7
Demand for RPS qualifying resources 8 05 January 1/5/2022 8
PNW wind: Equity ownership or long-term contracts vs. TRECs (Jan 2011, a. MW) 1/5/2022 9
Northwest wind power: Balancing Authorities 1/5/2022 10
BPA Balancing Authority wind capacity BPA BA peak load BPA BA min load 1/5/2022 11
Northwest windpower development Operating Under construction Planned Area of legend symbols represents 200 MW capacity 1/5/2022 12
Why is wind capacity concentrated east of the Columbia River Gorge? • Reasonable (though not world-class) wind quality • Former surplus of transmission capacity to PNW load centers • Head of interties to California • Compatible land use (dryland wheat and rangeland) • Favorable political climate (most counties) 1/5/2022 13
Gorge winds driven by Pacific storm fronts 1/5/2022 14
Northwest wind power issues • Wind capacity is geographically concentrated, leading to volatile behavior (large and rapid ramps) • Wind capacity is concentrated in the Bonneville Balancing Authority • Bonneville needs little wind for its native load; wind capacity will soon exceed Bonneville's minimum load • Northwest wind is primarily driven by Pacific storm fronts, uncorrelated with load • Storm front + high spring hydro + low load + spill constraints can lead to excess generation • Production incentives + REC revenues discourage curtailment • Demand for wind power increasingly driven by California RPS • California RPS policy requires energy delivery only within the calendar year, so does not encourage transmission investment • Future California RPS policy is uncertain 1/5/2022 15
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