Britannica
Sources used in this answer
- geothermal power - Extraction and exhaustion
- Alternative energy - 1960 - First commercial scale geothermal electric plants in the U.S. built in California
- Alternative energy - 1921 - World’s first geothermal power plant is built in California
- geothermal power - Types of power generation
- volcano - Volcanoes and geothermal energy
How did wastewater recharge help restore electrical capacity at the Geysers in California?
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geothermal energy
The Nesjavellir Geothermal Power Plant, Iceland.
At the Geysers geothermal field in California, electrical capacity experienced a significant decline, dropping from 1,800 MW to approximately 1,000 MW over time due to the exhaustion of the geothermal reservoir.
To address this, the field was placed under a single operator, and infrastructure was developed to deliver wastewater to the site. By constructing pipelines to transport this water, operators were able to recharge the reservoir, which successfully restored about 200 MW of electrical capacity. This process demonstrates that with proper management and consistent water replenishment, geothermal resources can be sustained and even recover from periods of decline.1