Variation of CAISO's Nodal Prices in the Day-Ahead Market

Sept. 1, 2021
Nodal Pricing Duration Curve Standard Deviation Plotly PostgreSQL Python

There are two established pricing systems for competitive wholesale electricity markets: A nodal or a zonal pricing system. In a nodal pricing system, not just one but a multitude of market prices are determined - one for each node of the electricity system. This post explores CAISO's nodal pricing system by analyzing the variance of its Day-Ahead market prices for 2019 and 2020.

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