the bottleneck compounded the price manipulation by hamstringing energy grid managers in their ability to transport electricity from one area to another. With a smaller pool of generators available to draw from in each area, managers were forced to work in two markets to buy energy, both of which were being manipulated by the energy companies.
The International Energy Agency estimates that a 5% lowering of demand would result in a 50% price reduction during the peak hours of the California electricity crisis in 2000/2001. With better demand response the market also becomes more resilient to intentional withdrawal of offers from the supply side.
Effects of partial deregulation
Part of California’s deregulation process, which was promoted as a means of increasing competition, involved the partial divestiture in March 1998 of electricity generation stations by the incumbent utilities, who were still responsible for electricity distribution and were competing with independents in the retail market. A total of 40% of installed capacity 20,164 megawatts was sold to what were called “independent power producers.” These included Mirant, Reliant, Williams, Dynegy, and AES. The utilities were then required to buy their electricity from the newly created day-ahead only market, the California Power Exchange (PX). Utilities were precluded from entering into longer-term agreements that would have allowed them to hedge their energy purchases and mitigate day-to-day swings in prices due to transient supply disruptions and demand spikes from hot weather.
PG&E yard in San Francisco
Then, in 2000, wholesale prices were
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