Advanced

Climate change impacts on high-elevation hydroelectricity in California

Madani, Kaveh; Guegan, Marion and Bertacchi Uvo, Cintia LU (2014) In Journal of Hydrology 510. p.153-163
Abstract
While only about 30% of California's usable water storage capacity lies at higher elevations, high-elevation (above 300 m) hydropower units generate, on average, 74% of California's in-state hydroelectricity. In general, high-elevation plants have small man-made reservoirs and rely mainly on snowpack. Their low built-in storage capacity is a concern with regard to climate warming. Snowmelt is expected to shift to earlier in the year, and the system may not be able to store sufficient water for release in high-demand periods. Previous studies have explored the climate warming effects on California's high-elevation hydropower by focusing on the supply side (exploring the effects of hydrological changes on generation and revenues) ignoring... (More)
While only about 30% of California's usable water storage capacity lies at higher elevations, high-elevation (above 300 m) hydropower units generate, on average, 74% of California's in-state hydroelectricity. In general, high-elevation plants have small man-made reservoirs and rely mainly on snowpack. Their low built-in storage capacity is a concern with regard to climate warming. Snowmelt is expected to shift to earlier in the year, and the system may not be able to store sufficient water for release in high-demand periods. Previous studies have explored the climate warming effects on California's high-elevation hydropower by focusing on the supply side (exploring the effects of hydrological changes on generation and revenues) ignoring the warming effects on hydroelectricity demand and pricing. This study extends the previous work by simultaneous consideration of climate change effects on high-elevation hydropower supply and pricing in California. The California's Energy-Based Hydropower Optimization Model (EBHOM 2.0) is applied to evaluate the adaptability of California's high-elevation hydropower system to climate warming, considering the warming effects on hydroelectricity supply and pricing. The model's results relative to energy generation, energy spills, reservoir energy storage, and average shadow prices of energy generation and storage capacity expansion are examined and discussed. These results are compared with previous studies to emphasize the need to consider climate change effects on hydroelectricity demand and pricing when exploring the effects of climate change on hydropower operations. (C) 2013 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Hydropower, Climate change, Electricity, Optimization, California, EBHOM
in
Journal of Hydrology
volume
510
pages
153 - 163
publisher
Elsevier
external identifiers
  • wos:000333138800014
  • scopus:84891647490
ISSN
0022-1694
DOI
10.1016/j.jhydrol.2013.12.001
project
MERGE
language
English
LU publication?
yes
id
fda6ccb5-7e56-4b2d-a19e-f498e3e168cd (old id 4407709)
date added to LUP
2014-04-29 09:33:46
date last changed
2017-10-22 04:20:53
@article{fda6ccb5-7e56-4b2d-a19e-f498e3e168cd,
  abstract     = {While only about 30% of California's usable water storage capacity lies at higher elevations, high-elevation (above 300 m) hydropower units generate, on average, 74% of California's in-state hydroelectricity. In general, high-elevation plants have small man-made reservoirs and rely mainly on snowpack. Their low built-in storage capacity is a concern with regard to climate warming. Snowmelt is expected to shift to earlier in the year, and the system may not be able to store sufficient water for release in high-demand periods. Previous studies have explored the climate warming effects on California's high-elevation hydropower by focusing on the supply side (exploring the effects of hydrological changes on generation and revenues) ignoring the warming effects on hydroelectricity demand and pricing. This study extends the previous work by simultaneous consideration of climate change effects on high-elevation hydropower supply and pricing in California. The California's Energy-Based Hydropower Optimization Model (EBHOM 2.0) is applied to evaluate the adaptability of California's high-elevation hydropower system to climate warming, considering the warming effects on hydroelectricity supply and pricing. The model's results relative to energy generation, energy spills, reservoir energy storage, and average shadow prices of energy generation and storage capacity expansion are examined and discussed. These results are compared with previous studies to emphasize the need to consider climate change effects on hydroelectricity demand and pricing when exploring the effects of climate change on hydropower operations. (C) 2013 Elsevier B.V. All rights reserved.},
  author       = {Madani, Kaveh and Guegan, Marion and Bertacchi Uvo, Cintia},
  issn         = {0022-1694},
  keyword      = {Hydropower,Climate change,Electricity,Optimization,California,EBHOM},
  language     = {eng},
  pages        = {153--163},
  publisher    = {Elsevier},
  series       = {Journal of Hydrology},
  title        = {Climate change impacts on high-elevation hydroelectricity in California},
  url          = {http://dx.doi.org/10.1016/j.jhydrol.2013.12.001},
  volume       = {510},
  year         = {2014},
}