The Lesson: This project was a disaster from the beginning. Speed and greed are a recipe for environmental, economic, and social failures. Applications for future wind developments must learn from this experience and be much, much more diligent and responsible in their planning and execution.
Desert Report March 2017 – Parke and Linda Ewing
The Ocotillo Wind Energy Facility (OWEF)1 is an utility scale project placed on 12,436 acres near Ocotillo, California, of which 10,151 acres are public land managed by the Bureau of Land Management (BLM). Let’s not forget the towns of Ocotillo and NoMirage. Not huge towns, but home to 266 residents who chose the solitude, the quietness, and the beauty of the ever-changing seasons. Much of this beauty, along with the ecosystem, has been sacrificed.
This wind energy facility now consists of 112 Siemens 2.3-108 MW Industrial Wind Turbines (IWT), which means each IWT was rated to produce 2.3 Megawatts (MW), and the blade swept area is 108 meters in diameter (354.331’). At a later date, the rating was increased to 2.7 MW per tower, very likely to meet the minimum installed capacity required by the California Public Utilities Commission (CPUC) if San Diego Gas & Electric (SDG&E) is to meet their mandated renewable energy requirements.
The nacelle, which houses moving and support components such as the gearbox, generator, and main shaft, sits on top of a round tapered steel tower 80m (262.467’) above the ground. The 173’ long blades are held in place at a hub which is attached to the end of the nacelle. The total height of the wind turbine when a blade is in the 12 o’clock position is about 438’. The base of the tower is 15’ in diameter and houses the inverter and control equipment. Two cooling fans are placed outside of the base under the entry stairway, and the transformer is placed on the ground next to the base. More data can be found at Wikipedia2 and at the Siemens’ link3. All these links are posted in the “Notes” section online at http://www.desertreport.org.
How did this happen? Initially, when we first heard about this project, we were told by Pattern Energy officials and by project documentation that we, the residents, would not be impacted by the turbine facility because it would be located five miles away from the Ocotillo Community. Five miles? That’s an acceptable distance. My wife and I now have turbines that reside one-half a mile from our house and with most less than one mile from the community on all sides.
There were so many maps presented during the different meetings with the various Imperial County departments that confusion ran rampant when someone asked which map represented the location of the turbines for this project. During a scoping meeting, a meeting designed to gain input from every single entity, person, department, or facility that may be impacted by this project, the residents were not allowed to speak. Instead, we were instructed to write our questions on a post card, and they would be addressed at a later time. When?
Now let’s talk about the turbine access roads. Initial discussions and documentation indicated that these roads would be thirty-six feet wide and then narrowed to sixteen feet once the project was complete. In addition there would be an additional fifteen feet on either one side or both sides for the electrical collection lines from each turbine. Some roads ended up being up to 113 feet wide. The disturbance caused to Native American sites and to wildlife has been recorded many times4.5.
Many homeowners have felt the need to purchase flood insurance, in the middle of the desert. Residents feel that Pattern Energy was allowed to change the drainage patterns that will affect the alluvial fans, causing flooding by diversion of rain runoff. Construction of forty-two miles of access roads and an additional eighty-two miles of collection lines has stripped the water absorbing desert crust, creating the potential for flooding in areas that have been safe in past years.
Initial Wind Estimates
The next indiscretion that made itself Somewhere on this map is a community now surrounded by industrial project. known were the wind values. The wind values were incorrectly stated – records were from the Desert View Tower located ten miles up the Interstate Highway grade from Ocotillo and approximately another 2500 feet higher than the desert valley where the project is located. How were they allowed to use those numbers? Three years of data have shown that these turbines are not generating the power that was projected.
During the permitting process, differing estimate were given for the energy production of the facility depending upon who made the estimate and for whom they were intended. Ultimately Patten Energy stated that the OWEF would have a capacity factor of 34% (meaning that over time it would produce 34% of its maximum rated output at full sunlight) and that it would produce 2673 gigawatt hours (GWh) of energy in its first three years. In fact, the actual capacity factor during this period was 21%, and the total energy produced was 1438 GWh, far below the projected figures. This was in spite of receiving $115,890,946 dollars from the Department of Energy’s 1603 Cash Grant Program6 in lieu of the Production Tax Credits and $110,000,000 from the Border Environmental Cooperation Commission7.
During the BLM scoping period for the project, many comments were submitted. The majority of these were in opposition to the OWEF. Comments that favored the facility were mostly based on the jobs and economic benefits that the facility would provide. A small minority of the comments favored the facility because of the sustainable renewable energy benefits. Those claims were based on the “Installed Capacity,” which is the maximum power which the facility can generate at full daytime sunlight, and an expected capacity factor of 34%. Ocotillo Wind, as stated previously, has fallen far short of predictions.
Current electricity generation for the residents of California relies on a mix of energy production technologies including: coal (7.7%), natural gas (41.9%), nuclear (13.9%), other renewables (13.7%), hydroelectric (10.8%), and others (12.0%). Based on nearly 204,000 GWh of net power generation in California in 2010, the average annual production of 479 GWh by the Ocotillo facility represents only 0.2 percent of California’s total. It is reasonable to wonder if the negative consequences of the project can be justified by this small contribution.
The OWEF has been plagued by mechanical problems. On May 16, 2013, a 173’ long wind turbine blade was thrown off of Turbine 156. The cause was determined to be a fiberglass root segment curing problem. Ten wind turbine blades were ultimately replaced at Ocotillo Wind. Many people familiar with the facility believe that the blade problem was due to the “fast tracking” of the facility to enable Ocotillo Express LLC to complete the project by the end of 2012, so they could qualify for the 1603 Cash Grant offered by the Department of Energy.
On January 15, 2015, Turbine 110 had a major fire. The cause of the fire was never revealed. The entire turbine was eventually replaced. The turbine did not generate power for nine months.
On November 21, 2016, Turbine 126 collapsed entirely. It was later confirmed to have been caused by a turbine blade striking the side of the tower. According to the Ocotillo Wind website, a shear stiffener inside of the blade was found to have failed. The Ocotillo Wind website8 stated that the turbine actually collapsed “in the Designated Safe Zone.” There are easily twelve wind turbine sites where BLM designated trails fall within that so-called designated safe zone. Potentially, a person could be killed under any of the Ocotillo Wind Turbines since the entire area is open to
The OWEF has been plagued with oil leaks. The residents of Ocotillo have counted over seventy turbines with oil leaks at towers and countless hydraulic oil leaks on the blades, many of them considered to be significant by the Imperial County Environmental Task Force. Additionally failures of yaw drives (which orient the blades into the wind) have caused problems. Eight gearboxes have been replaced since the facility became 100% operational along with hundreds of yaw drives.
The bright red blinking lights of Ocotillo Wind are required by the Federal Aviation Administration (FAA) and can be seen from the southern portion of the Salton Sea, over seventy miles away. Nobody lives in the desert to view wind turbine lights blinking in unison all night long. Pattern Energy promised the community a lighting control system which would be radar activated only when aircraft were present. The Laufer System9 was approved by the FAA in January of 2016. Pattern constructed the whole first phase of Ocotillo Wind consisting of ninety-four turbines in a record 6 1/2 months, but it has been over a year, and the very irritating red lights still shine.
Death in the Air
Many birds have been struck by the wind turbine blades, and bats lungs have exploded as they fly near the turbines. A carcass survey between 10/05/14 and 09/22/15, obtained by a FOIA request, indicated that sixty-nine birds and bats were found on the agreed upon survey sites, under or near the wind turbines. Every wind turbine site on the facility was not searched every day. We can assume that scavengers consumed many of the carcasses prior to the survey. Bird kills don’t appear to be a huge problem in Ocotillo, but we all hate the killing of any wildlife.
The once numerous Red Tailed Hawks have disappeared. Were they killed by spinning wind turbine blades? There were once so many jackrabbits that it was overwhelming. Now there are no jackrabbits, and the coyotes have also disappeared completely. The last time we saw one, it was skinny and sickly looking, almost certainly for lack of food. The ecosystem is gone.
This project was a disaster from the beginning. Speed and greed are a recipe for environmental, economic, and social failures. Applications for future wind developments must learn from this experience and be much, much more diligent and responsible in their planning and execution.
Desert Report Spring 2017: