California Independent System Operator

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CAISO
Company type
Non-profit
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Headquarters
Folsom, California
,
United States
Area served
California
Key people
Elliot Mainzer (President and CEO), Roger Collanton, Stacey Crowley, Neil Millar, Mark Rothleder, Ryan Seghesio, Dede Subakti Joanne Serina, Anna McKenna and Jodi Ziemathis
ProductsElectricity grid management
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Number of employees
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Websitewww.caiso.com

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ISOs and RTOs of North America as of 2024

The California Independent System Operator (CAISO) is a non-profit Independent System Operator (ISO) serving California.[1] It oversees the operation of California's bulk electric power system, transmission lines, and electricity market generated and transmitted by its member utilities. CAISO is one of the largest ISOs in the world, delivering 300 million megawatt-hours of electricity each year and managing about 80% of California's electric flow.[2]

History

The California Legislature created CAISO in 1998 as part of the state restructuring of electricity markets. The legislature was responding to Federal Energy Regulatory Commission (FERC) recommendations following the passage of the federal Energy Policy Act of 1992, which removed barriers to competition in the wholesale generation of electricity business. FERC regulates CAISO because interstate transmission lines fall under the jurisdiction of federal commerce laws.[3]

Management

CAISO's leadership consists of executive management and governing board members appointed by the Governor of California.

The current executive leaders are:[4]

  • President and CEO: Elliot Mainzer[5]
  • Vice Presidents: Roger Collanton,[6] Stacey Crowley,[7] Neil Millar, Petar Ristanovic, Mark Rothleder, Ryan Seghesio, Eric Schmitt,[8] and Jodi Ziemathis

Renewables

Script error: No such module "Labelled list hatnote". In 2018, California ranked first in the nation as a producer of electricity from solar, geothermal, and biomass resources and fourth in the nation in conventional hydroelectric power generation.[9] As of 2017, over half of the electricity (52.7%) produced was from renewable sources.[10] CAISO provides a daily report on California renewable electricity generation, compared to overall system demand.[11]

Blackouts

CAISO settled with the Federal Energy Regulatory Commission and the North American Electric Reliability Corporation for $6 million for violations of standards related to the 2011 Southwest blackout.[12][13]

Starting August 5, 2020, CAISO ordered the utilities operating on its power grid to cut off power to 200,000–250,000 customers. While CAISO stated the high temperatures and corresponding high demand for air conditioning necessitated rolling blackouts, it enacted the blackouts with significant power reserves still being available.[14] When causing the rolling blackouts, CAISO acted contrary to its own policy, with its 2019 resource assessment[15] calling for stage 3 emergency only with 3% or less available power resources. When stage 3 was first enacted on August 15, the CAISO power grid had 8.9% available resources, about three times the required threshold.

On September 6, 2022, during one of the longest and hottest September heatwaves on record, which encompassed multiple Western states, California's peak electricity demand of 52,061 megawatts occurred.[16][17] Widespread rolling blackouts were narrowly avoided due to conservation efforts, though several thousand customers in Palo Alto and Alameda had their power cut when CAISO told those cities' municipal power companies to shed load.[16]Template:R/superscript[17]Template:R/superscript The CEO of CAISO stated that the 3,300 megawatts of grid storage batteries added since the August 2020 rolling blackouts were definitely helpful during this event.[16]Template:R/superscript

See also

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References

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  1. ^ Page Module:Citation/CS1/styles.css has no content."Understanding the CAISO". CAISO. Archived from the original on July 8, 2013. Retrieved July 20, 2013.
  2. ^ Page Module:Citation/CS1/styles.css has no content."ISO At-A-Glance" (PDF). CAISO. December 2018. Archived (PDF) from the original on March 16, 2023. Retrieved August 15, 2023.
  3. ^ Page Module:Citation/CS1/styles.css has no content."CAISO: Company Information and Facts" (PDF). CAISO. 2013. Archived from the original (PDF) on July 24, 2013. Retrieved July 20, 2013.
  4. ^ Page Module:Citation/CS1/styles.css has no content."Our leadership". caiso.com. Retrieved August 20, 2020.
  5. ^ Page Module:Citation/CS1/styles.css has no content.Healy, Patrick (August 20, 2020). "Power Outages - Behind the Scenes Maneuvering Averts Even More California Power Outages". nbclosangeles.com. Retrieved August 20, 2020.(CEO Stephen Berberich)
  6. ^ Page Module:Citation/CS1/styles.css has no content."California ISO Board Appoints New Corporate Officer - Roger Collanton is Vice President, General Counsel, Chief Compliance Officer and Corporate Secretary". businesswire.com. March 3, 2014. Retrieved August 20, 2020.
  7. ^ Page Module:Citation/CS1/styles.css has no content."STACEY CROWLEY JOINS TAHOE FUND BOARD OF DIRECTORS". tahoefund.org. May 7, 2019. Retrieved August 20, 2020.(Stacey Crowley, VP of External and Customer Affairs)
  8. ^ Page Module:Citation/CS1/styles.css has no content."New Vice President to Lead ISO Market & Grid Operations". businesswire.com. September 1, 2011. Retrieved August 20, 2020.
  9. ^ Page Module:Citation/CS1/styles.css has no content."eia.gov California state overview". Retrieved February 23, 2020.
  10. ^ Page Module:Citation/CS1/styles.css has no content."Overview". eia.gov. Retrieved February 23, 2020.
  11. ^ Page Module:Citation/CS1/styles.css has no content."Daily renewables report" (PDF). Archived from the original (PDF) on February 27, 2017. Retrieved October 13, 2020.
  12. ^ Page Module:Citation/CS1/styles.css has no content."FERC Approves Fifth Settlement in 2011 Southwest Blackout Case". Federal Energy Regulatory Commission.
  13. ^ Page Module:Citation/CS1/styles.css has no content."California Independent System Operator, FERC and NERC Reach Settlement Agreement". Archived from the original on February 9, 2015. Retrieved February 8, 2015.
  14. ^ Page Module:Citation/CS1/styles.css has no content.Penn, Ivan (August 16, 2020). "Rolling Blackouts in California Have Power Experts Stumped". The New York Times. ISSN 0362-4331. Retrieved August 17, 2020.
  15. ^ Page Module:Citation/CS1/styles.css has no content."2019-SummerLoads-Resources-Assessment-Report" (PDF). p. 31. Archived (PDF) from the original on August 17, 2020.
  16. ^ a b c Page Module:Citation/CS1/styles.css has no content.Woolfolk, John (September 6, 2022). "Rolling blackout threat averted: Power was shut off only to some customers in Palo Alto, Alameda". San Jose Mercury News. Widespread blackouts didn't happen Tuesday. But it was close. And on a day when the Bay Area hit all-time heat records across the regions, the drumbeat of power warnings kept residents on edge. At one point, PG&E began notifying 525,000 customers that the blackouts were imminent. ... Palo Alto and Alameda, both of which have their own municipal utilities, were hit with rolling outages Tuesday night. The cities were directed by the ISO to reduce their electrical load. Power was shut off to 1,700 customers in Palo Alto and an unspecified number of customers in Alameda.
  17. ^ a b Page Module:Citation/CS1/styles.css has no content."California avoids rolling blackouts despite record power demand, but the brutal heat wave continues". CBS News. September 7, 2022.

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