Insight

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

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26 September 2017

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

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.

Table of contents

Tables and charts

This report includes 8 images and tables including:

  • Daily high temperatures at select locations
  • 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
  • Highlights from 9/1/2017
  • CAISO 9/1/2017 Actual Hourly Generation and Demand
  • CAISO 4/14/2017 – 450% scenario

What's included

This report contains:

  • Document

    Feeling the heat - Analyzing the California ISOs near-record peak day and implications for renewable energy goals_pr.pdf

    PDF 670.73 KB