Insight

Feeling the heat: Analyzing the California ISO's near-record peak day and implications for renewable energy goals

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Report summary

On September 1 2017 an extreme late summer heat wave hit California and much of the west coast. The heat wave included normally temperate coastal cities in addition to inland areas. For example San Francisco set an all time high temperature record of 106 degrees beating the old record by 3 degrees. In spite of this the California ISO (CAISO) peak demand for the day still did not exceed the record peak of 50 270 MW set on July 24 2006. In this Insight we examine the CAISO demand and supply dynamics of 9/1/2017 focusing on the hourly performance of traditional generators and renewable technologies. We then extrapolate that information to see what it can tell us about a high renewable future in California.

What's included

This report contains

  • Document

    Feeling the heat: Analyzing the California ISO's near-record peak day and implications for renewable energy goals

    PDF 445.44 KB

Table of contents

Tables and charts

This report includes 8 images and tables including:

Images

  • CAISO 9/1/2017 – Meeting 100% renewable over 24 hours
  • CAISO 9/1/2017 – 100% renewable future using surplus energy produced earlier in the year
  • CAISO 4/14/2017 Actual Hourly Generation and Demand
  • CAISO 4/14/2017 – 100% renewable future creating surplus for use later in the year
  • CAISO 9/1/2017 Actual Hourly Generation and Demand
  • CAISO 4/14/2017 – 450% scenario

Tables

  • Daily high temperatures at select locations
  • Highlights from 9/1/2017

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