Mojave Desert Blog

As BrightSource Energy began to bulldoze approximately 5.6 square miles of pristine desert to build its Ivanpah Solar power project, we quickly learned the impact on terrestrial species - rare wildflowers, long-lived yucca plants, and desert tortoises were displaced or killed.   Now that the Ivanpah Solar project is powering on, thousands of mirrors focusing the sun's rays at three towers have burned or battered dozens of birds in the first couple of months of becoming operational.   Chris Clarke with KCET's ReWire has been reporting on the troubling new trend - dead birds being found after colliding with mirrors or burning to death in super-heated air over the project.  We need to replace fossil fuels with renewable energy, but we need to do so in a way that minimizes (not expands) the human threat to ecosystems and wildlife.  The vast majority of BrightSource Energy's negative impacts on wildlife could have been avoided if we invested more in solar panels on rooftops, o

Defenders of Wildlife this month warned the Department of Interior that its pending approval of two large-scale solar projects in the Ivanpah Valley would destroy irreplaceable desert habitat and degrade an important wildlife linkage , despite smarter alternatives .  In a separate letter, the Nature Conservancy noted that Interior's approval of the projects would ignore science-based guidance on how to manage public lands and minimize impacts of energy projects. The two solar projects - First Solar's Silver State South and Sateline projects - would be built on the California-Nevada border on a narrow corridor of habitat that connects different populations of the beleaguered desert tortoise.  A loss or degradation of this habitat linkage would make it more difficult for the desert tortoise to recover from the downward spiral it has experienced over the last half century, and erode its resilience as it faces a host of human threats, including climate change.  Conservationists

Mount Charleston blue butterfly finally received Federal protection. Photo by Corey Kallstrom, USFWS The U.S. Fish and Wildlife Service listed the Mount Charleston blue butterfly as endangered in September, which should result in more resources to protect this species from vanishing.  The Mt. Charleston blue butterfly is only known to occur in the higher reaches of the Spring Mountains in Nevada, west and northwest of Las Vegas.  The butterfly's population is likely declining, although information gaps preclude us from quantifying its population trends.  The species is believed to be extirpated from six of 16 locations that it has been known to inhabit, and it is only "presumed" to occupy eight of the 10 other locations.  In other words, it may exist in 10 relatively confined locations throughout the mountains, but for eight of those locations it probably has only a tentative existence, at best. The butterfly faces a threat from climate change - more extreme p

The U.S. Fish and Wildlife Service's (FWS) biological opinion provides a seemingly conflicted and reluctant expression of support for the Silver State South solar project on the basis of mitigation measures that it admits may not offset the damage done by the project to the viability of a key habitat linkage for the desert tortoise.  The biological opinion is FWS' contribution to the Bureau of Land Management's (BLM) environmental review of the Silver State South project, and evaluates how the project will impact the desert tortoise.   Perhaps to speed approval of the project, the opinion glosses over a significant potential consequence of the project - local extirpation of the desert tortoise population in the Ivanpah Valley. The Silver State South solar project would be built at the pinch point of the hour-glass shaped Ivanpah Valley, and potentially isolate two populations of the desert tortoise; both the BLM and FWS acknowledge that "current research does no

The Solar Decathlon is being held in California at long last.  The competition was first held in 2002, and features homes powered by rooftop solar panels, and built by teams from across the country and overseas competing to be the most sustainable in various categories.  The overall winning team must design and build a home that meets the following general criteria: Is affordable, attractive, and easy to live in Maintains comfortable and healthy indoor environmental conditions Supplies energy to household appliances for cooking, cleaning, and entertainment Provides adequate hot water Produces as much or more energy than it consumes. Consider the "DesertSol" entry designed and built by the University of Nevada, Las Vegas (UNLV).  The DeserSol house uses a solar thermal system to heat water and the home itself, photovoltaic panels to supply energy, and advanced engineering that reduces framing materials by nearly 20%.  The entry will be on display at the Las

Tbe Bureau of Land Management (BLM) in September released the final environmental impact statement (EIS) for the Silver State South solar project, which would destroy approximately 3.7 square miles of intact desert habitat. Although the direct impact on wildlife may not compare to BrightSource Energy’s Ivanpah Solar project, the Silver State South project almost certainly will have significant long-term effects on the ability of the desert tortoise to maintain habitat connectivity. The BLM’s preferred alternative supports the solar project, and secondarily designates an Area of Critical Environmental Concern (ACEC) to protect the desert tortoise habitat that First Solar does not want to destroy.  The ACEC is a welcomed sweetener, but still does not override the bitterness that arises from the fact that destruction of habitat for the solar project is completely unnecessary since the solar panels would be just as happy on already-disturbed lands somewhere else in the state.  Tort

First Solar, the company destroying several square miles of desert habitat to build solar facilities on pristine desert wildlands,  sided with utilities companies seeking to limit the expansion of rooftop solar in a regulatory filing this month.  First Solar's move is not surprising because the panels it manufactures and uses at its large solar facilities are not very efficient, and typically are not used in rooftop solar installations.  The company depends on monopolistic utility companies to buy energy from its projects, funds anti-environment politicians , and has insisted on building a large project that biologists have warned will degrade habitat connectivity for the threatened desert tortoise. First Solar's Silver State North solar project in the foreground, and BrightSource Energy's Ivanpah Solar project in the background.  These large projects have destroyed several square miles of intact desert habitat, and required millions of dollars in transmission line up