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As Relicensing Looms, Aging Dams Face a Reckoning

Felicity Barringer
Mar 5 2019

Green power source or fish killer? As older dams around the West come up for relicensing, their owners know that they’ll have to spend heavily to fix problems, while new energy sources are getting cheaper.

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Seen here around 1968, the Cape Horn Dam on the Eel River was built in 1900, creating Lake Van Arsdale and sending water through a tunnel to a hydroelectric turbine in the Russian River watershed. Library of Congress
 

Update, May 14, 2020

The Potter Valley project in northern California, which was abandoned last year by its owner, Pacific Gas & Electric, is on its way to adoption by a partnership whose plans include removal of Scott Dam, built in 1920 on the Eel River, according to a report just submitted to the Federal Energy Regulatory Commission.
 
This group is made up of local government, water and energy agencies, a Native American group, and an environmental group. Their report described a plan to operate the project, working to ensure electricity and irrigation needs are still met while removing the dam. They plan to form a new authority to manage the project.
 
Environmental groups and tribes seeking to restore salmon runs on the Eel River had long sought the removal of Scott Dam. Rep. Jared Huffman, a Democrat from San Rafael, who helped bring the coalition together, told the Redwood Times-Standard the proposal is “a very significant acknowledgement by the coalition partners that all the technical analysis and scrutiny we’ve applied to this project points to removing Scott Dam as the only way to achieve the fish goal.”

Update, May 16, 2019

The Potter Valley project won’t be an orphan much longer. Two months ago, the Pacific Gas & Electric Company abandoned the two-dam, one-tunnel facility, which generates 9.2 megawatts of electricity and transfers water from the Eel River to the Russian River. PG&E told the Federal Energy Regulatory Commission it would not renew its hydropower license. But agricultural interests in Sonoma and Mendocino Counties, which benefit from water transferred from the Eel River Water to the Russian River, feared losing that water. Now the Sonoma County Water Agency, the Mendocino Inland Water and Power Commission, and California Trout, Inc. are working together on a two-basin proposal. They hope to forge a planning agreement to “secure the region’s water supply and protect endangered salmon species in the Eel River and upper Russian River,” said a press release from the office of North Bay congressman Jared Huffman. It quotes Curtis Knight, executive director of California Trout, saying, “We are committed to finding a solution … that meets the needs of fish, water and people.” The agencies expect to form a new entity to take over the project.

By Felicity Barringer

More than a century ago, the people of Mendocino County in California needed electricity to fit into the industrialized world. So engineers generated power by building two dams and reconfiguring two rivers. For decades thereafter, people fashioned steadily improving lives around the new landscapes. At the same time, beset by environmental insults, the annual runs of salmonids in the Eel River withered.

Inevitably, priorities changed. As building the dams and creating the 9.2-megawatt Potter Valley project solved the need for electricity, a new need developed: irrigation. Tens of thousands of acre-feet of Eel River water were diverted to supply the power station at the headwaters of the Russian River’s East Branch. Then it flowed on, supplying cities and farmers and nurturing Mendocino and Sonoma County’s expanding agriculture – once pears and hops, now dominated by wine grapes.

The current need: repair the harm caused by the dams. That will cost so many tens of millions of dollars that the project’s owner, Pacific Gas & Electric – already losing money on it – is cutting its losses. It will not seek a new federal license.

This decision mimics PG&E’s recent moves away from other small hydroelectric projects, like the 12-megawatt Narrows project on the Yuba River in Nevada County, which PG&E sold last year to a local water agency. It also echoes decisions by the northwestern utility PacifiCorp, which, at a cost of $37 million, breached its 14.7 megawatt Condit Dam on the White Salmon River in Washington.

The Potter Valley Project: More Than Just a Dam

Built starting in 1905 by the Eel River Power and Irrigation Company, the Potter Valley Project grew over time to comprise two dams on the Eel River and two reservoirs: Lake Van Arsdale and Lake Pillsbury. The project eventually served two purposes: to generate power from Eel River water diverted to a powerhouse in Potter Valley, and to bring irrigation water to the Russian River watershed. This water served expanding agricultural areas in Mendocino and Sonoma Counties, including many new vineyards. Since the Russian River watershed is susceptible to flooding, the Army Corps of Engineers completed the Coyote Valley dam in 1958 for flood control. It created Lake Mendocino and provided a new source of both irrigation water and opportunities for recreation.

Timeline of the Potter Valley Project

Tap to see animated timeline of the Potter Valley Project

Sources: Potter Valley Project; Friends of the Eel River; Natural Earth Data; ESRI Earth Imagery; NASA Elevation Data

Geoff McGhee/Bill Lane Center for the American West

Choices Ahead for Owners of Small Hydroelectric Projects Across the West

Depending on how it finally turns out, the narrative of the Potter Valley project could be a cautionary tale for other dam owners whose stakeholders are at odds. Or it could be a roadmap to reconciling competing interests.

Dam by dam, owners of smaller hydroelectric projects around the West look at them with a cold eye as relicensing looms. Created with optimism a century ago, dams are now seen as fish-killers and river-distorters. New energy sources are getting cheaper. After decades of operation, owners approach relicensing knowing that, if they are to continue generating a single watt of electricity, they must fix the problems.

Tens of millions of dollars are often at stake. The Federal Energy Regulatory Commission licenses hydroelectric projects for up to 50 years, but sometimes just one year at a time to ensure problems are resolved. Limited revenue from electricity may not justify expensive remediation. Before it was sold off, a financial analysis of the Narrows project showed costs would have outweighed profits by more than $12 million over the first five years.

Depending on how it finally turns out, the narrative of the Potter Valley project could be a cautionary tale for other dam owners whose stakeholders are at odds. Or it could be a roadmap to reconciling competing interests. Whatever the lesson, the project is part of a larger transformation in how people understand debts owed to the environment. And how they are repaid. “[The Potter Valley project] is a subset of a much larger body of problems,” said Scott Greacen, conservation director at Friends of the Eel River, a conservation organization that is seeking to restore natural streamflows. Over the decades, “we took a lot of capital out of natural systems. Now the bills are coming due.”

Fighting climate change is another urgent need. One way is by creating carbon-free electricity – what dams do. The historian Heather Lee Miller, a staffer at Historical Research Associates in Washington, believes that if all governments classify small hydroelectric projects’ energy as renewable, subsidies could change the financial picture.

“Certainly some of the dams are in terrible places,” she said. Others, like PacifiCorp’s 1.1-megawatt project at Wallowa Falls in Oregon, are being relicensed. “There’s a backlog of dams that aren’t in the right spot,” she said, but added that, as the climate changes, it would be wrong to think small hydro-electric projects have no future.

What is the difference between projects like Wallowa Falls being relicensed and those, like Potter Valley, being abandoned by big electric companies? Economics are central. Relicensing the Potter Valley project promised to be daunting even before PG&E, facing hundreds of millions of dollars of wildfire liabilities, declared bankruptcy. “It now looks like PG&E’s overall incentive structure has shifted,” Greacen said. “They have given up.”

Western Dams Facing Relicensing Through 2025

The Federal Energy Regulatory Commission is charged with certifying hydroelectric projects for operation. It can license them for up to 50 years, but sometimes as little as one year at a time to ensure problems are resolved. Owners must file notice five years in advance of expiration that they intend to reapply, and must file an application at least two years before the license expires.


Sources: Federal Energy Regulatory Commission


Sources: Federal Energy Regulatory Commission

Bill Lane Center for the American West

Who Decides the Future? A Stakeholder Group Struggles to Find Compromise

The federal government determines the terms of PG&E’s exit. FERC will solicit interest from others to run it. If no one comes forward, it will order PG&E to develop a decommissioning plan that may or may not include removing facilities.

PG&E’s finances are private, but the economic analysis done for the Narrows project on the Yuba River offers guidance.

Jeff Bodington of San Francisco, the financial analyst who did it, said, “these projects made sense at the time they were built and perhaps for decades thereafter. Many still make sense.” But “some may make sense day in and day out, but when a license expires, relicensing can be very costly. A small project cannot absorb big relicensing costs. For each relicensing, he said, “these questions get asked. Are there fish impacts? Recreational impacts? Other impacts?”

The Potter Valley project had many impacts. The region’s congressman, Jared Huffman, created a working group of all stakeholders — water agencies, local and county governments, tribes, federal and state wildlife specialists and environmental groups – to hash out what the project should become and what happens to the dams.

Asked if the Potter Valley project is an electrical project or a water distribution project, Congressman Jared Huffman said simply. “Yes.” He added, “The question is, whether it can be both of those things and a fish recovery project.”

Dams a Mortal Threat to Fish Runs, Scientific and Regulatory Consensus Holds

Coho salmon, Chinook salmon and steelhead are on a trajectory to extinction in the Eel River basin.

In the past two decades, the federal government agreed with scientists that salmon and steelhead runs in the Eel River are threatened. A 2010 report from the Center for Watershed Sciences at the University of California, Davis, concluded, “coho salmon, Chinook salmon and steelhead are on a trajectory to extinction in the Eel River basin.”

The culprits listed in that report include early 20th-century commercial fishing and mechanized logging whose clear-cuts on the hillsides caused erosion that silted up the river. Floods in 1955 and 1964 added silt and changed the river’s course. All that hampered fish passage, but not as much as Scott Dam, built in 1922. It blocks dozens of miles of spawning areas. The report said, “the loss of salmonid habitat upstream of Scott Dam means there are fewer areas to serve as refuges for salmonid and steelhead… during environmentally unfriendly periods such as extended droughts.”

Eel River Diversions Were Slashed in 2006… But Then Russian River Fish Suffered

Eel and Russian River Map
The Potter Valley Project takes water from the Eel River, which flows north, and pumps it into the Russian River, which flows south towards wine country. Bill Lane Center for the American West

In 2004, the Federal Energy Regulatory commission ordered the diversions cut back from what was then 160,000 acre-feet annually. Now they average 72,000 acre-feet. These inter-basin diversions help fish in the Russian River. The Eel River water flows through a mile-long tunnel to generate electricity at a powerhouse on the banks of the East Fork of the Russian River. The water not used by the Potter Valley Irrigation District and other local diverters ends up behind the Coyote Valley dam in Lake Mendocino and is released periodically into the Russian River.

The state Water Resources Control Board requires the Sonoma County Water Agency to keep minimum stream flows on the Russian River to maintain fish spawning and migration and support recreation. The Eel River water transfers help them do that, according to Don Seymour, a principal engineer at the Sonoma County Water Agency.

The agency has had difficulty meeting its minimum instream flow requirements while not depleting Lake Mendocino. It won’t be easy to serve its urban, industrial and agricultural customers and help its endangered fish recover if there is less water in Lake Mendocino.

Help for Spawning Fish Could Cost Tens of Millions of Dollars – or Hundreds

Joshua Fuller, the National Marine Fisheries Service’s expert on salmonid runs in the Eel River, agrees that the Russian River fish do benefit from the Eel River water — but says access to the upper Eel River is crucial for reviving its salmonids.

Different strategies give fish access to spawning grounds. These include dam removal, a fish ladder, or hauling fish in trucks. Fuller heads one of two working groups in Congressman Huffman’s ad hoc committee weighing Potter Valley’s future. His group on fish passage is about to pick the two best of available solutions.

Good fish ladders are expensive. In August, the Lost Coast Outpost reported that a 2017 engineering report prepared for PG&E “found that constructing a functional fish ladder at Scott Dam would likely cost between $55 million and $93 million.” It would be “challenging to build, complicated to operate, very costly, and would have uncertain effectiveness.” Removing Scott Dam would be at least as expensive. Increasing the size of Coyote Valley dam, which holds back the Russian River, could cost $300 million.

Where could the money come from? As Congressman Huffman said, “If you look around at any stakeholder in either basin, none of them has the capacity to solve this problem and pay for it on their own. The only way to do this is to come together and unlock state and federal money.” His stakeholders group could sign a legal agreement giving the project a way forward without litigation.

PG&E’s January 25 announcement that it wanted out of Potter Valley complicates the plans being developed in the ad hoc committee. Huffman said that the glue binding potentially antagonistic stakeholders “is the fact that everybody’s at risk. There are really lousy solutions” possible “for everyone, no matter what their perspective.”

As Hydropower Profits Dwindle, Paying off Environmental Debt Gets Harder. But Renewable Energy Mandate May Help

Aerial image of Scott Dam
Scott Dam on the Eel River, above, completely blocks salmonid migration. A fish ladder could cost $55 to $93 million, and might not work. Rob Badger

The details of the project’s role in two different water basins are unique, but it has one thing in common with others: its owners are disinclined to pay environmental debts. “There’s the broader context of what’s going on in electricity markets,” said an energy consultant who would not speak for attribution. “With historically low wholesale energy prices, utilities, not surprisingly, will operate their lowest-cost units. Particularly if you have old infrastructure.”

But a new reality is emerging. Climate change puts a different perspective on the future of some small projects: states like California mandate a largely, or entirely carbon-free electric portfolio 25 years hence. “Resources that are 100 percent renewable are the new black,” he said. “That creates an opportunity for resources that have been ugly ducklings.” Todd Olson, a spokesman for PacifiCorp, which relicensed the Wallowa dam in 2017, said, “We went through the whole analysis many times over. We ultimately kept it because it is renewable, and there are other community values.”

Residents of Lake, Mendocino, and Sonoma Counties feel the Potter Valley project is crucial to them. “We’re talking about legacies now,” said Fuller of the fisheries service. “This project has been going on so long, cultures, families and generations are built around it. Say the project goes away: life is going to change for people.”

Data doesn’t yet show a clear trend of small hydropower projects’ owners walking away from them, although Mr. Bodington did say, “The trend is more getting taken down than put up.” Dozens of licenses are due for renewal in the next decade. Studies begin years before a license expires; the Potter Valley project’s license expires in 2022.

Whether or not Scott Dam is removed, and whether or not that decision is part of a wider trend, Mr. Huffman does see attitudes on dam removal changing. “Each time there’s a successful dam removal, it is demystified a little bit,” he said. “You should naturally see things get little bit easier, where dam removal makes sense going forward. But it’s always going to be case by case.”

 

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Edited by Geoff McGhee.

 

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Submit your own thoughts and questions by using the form at the bottom of this page. Entries will be reviewed and posted as we get them.

Anonymous Yuba County, CA

Responding to As Relicensing Looms, Aging Dams Face a Reckoning

Interesting article. The FERC relicensing process is a lot more complicated and not exactly as described here. The idea that every project is unique is true. In our area of California, a lot of the dams and hundreds of miles of conveyances were built for hydraulic mining water supply or to contain the resulting debris from that process. These water systems were later adapted into agricultural supply and hydroelectric generation. When hydro projects now come up for relicensing, they have to deal with these historic issues as well as complying with many environmental and cultural laws that didn't exist when they were constructed. There is little relationship between the generation capacity and the cost of relicensing. However, the electric generation hydro provides is very flexible in terms of turning it on and off, which makes it very useful in combination with wind and solar, which can be intermittent. This helps in matching generation to varying power demand (the duck curve).

3/21/2019, 2:01pm

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Recent Fires Destroyed Much of Washington State’s Crucial Sage Grouse Habitat An expert on the birds said that the state’s population of less than 1,000 grouse may have been cut in half as fires burned more than 600,000 acres of forest and sagebrush rangeland this year. Overall, scientists have issued a report showing that grouse populations in nine states have declined 44 percent in five years. Mongabay

Los Angeles Is Working to Turn Recycled Plastic into Pavement and Parking Lots. Three years ago, when China announced it would take no more recycling waste, the federal Energy Department started looking for ways to dispose of the excess piling up in American dumps. The city is working on a project to create asphalt containing recycled plastic and has experimented with the asphalt mix on parking lots and small roads. It is now planning to use it on a major street near Walt Disney Concert Hall. E&E News

The Southwest Is Suffering a Major Bird Die-Off, as thousands of migratory birds have been found dead in recent weeks. The cause of this mass die-off remains unknown, but some theorize that raging western wildfires forced many birds to reroute their migrations, and that exceptionally dry conditions have greatly reduced the presence of insects, birds’ main source of food. Large avian mortality during migration is rare and few instances have been as large as this one. High Country News

Microsoft Has Launched the Second Phase of an Underwater Data Center Experiment , extending work done off the West Coast in 2015 to explore the feasibility of submarine computing. Their Natick Project intended to explore underwater data centers’ potential economic and environmental advantages relative to those on dry land. The findings: a sealed container on the ocean floor could improve overall reliability, given that oxygen and humidity corrode terrestrial centers as they do other modern infrastructure. The team also hopes that offshore data centers could support faster information retrieval over interconnected networks. CMSWire

A “Language Keepers” Podcast Illuminates the Struggle to Keep Indigenous Languages Alive in California. Two centuries ago, as many as 90 languages and 300 dialects were spoken in California. Today only half this number remain. This series explores the current state of four Indigenous languages that are among the most threatened in the world: Tolowa Dee-ni’, Karuk, Wukchumni, and Kawaiisu. It features stories of families and communities across California working to revitalize their Native languages and cultures. Emergence Magazine

Articles Worth Reading: September 15, 2020

While the Jordan Cove Gas Export Terminal Has Received Federal Go-Aheads to Operate, lawsuits, other permitting delays and the unstable economics of natural gas make the export terminal’s future uncertain. Even if Pembina Pipeline Corp., developer of the planned terminal, prevails over state officials and environmentalists in court, the project faces a fragile liquid natural gas market — U.S. exports have decreased about 61% from January to July. ”It is increasingly difficult to permit and build these types of projects ... whether it's market demand or public outcry," said a Western Environmental Law Center lawyer. E&E News

For a Second Year, a Landmark Plastic Recycling Measure Fails to gain sufficient support in the California legislature. The bill would have made it a state goal to reduce waste from single-use products by 75 percent, and required that single-use products be recyclable or compostable. The final 37-18 vote at the last minutes of the session fell three votes short of the tally it needed. KQED

The Disappearance of Aleutian Island Otters Frays Alaskan Waters’ Food Web. Over the past 40 years, more than 90 percent of sea otters have vanished from the Aleutians’ delicate seascape. There, otters are more protector than predator, holding the entire ecosystem together by feasting on destructive sea urchins at a rate of up to 1,000 a day. Fewer otters, more urchins. Climate change makes things worse, as reported by a paper in the journal Science. Populations of sea urchins have boomed, carpeting the sea floor in spiny spheres that mow down entire forests of kelp. Now the living, red-algae reefs on which the swirling stands of kelp once stood are in peril. Softened by warming and acidifying waters, the coral-like structures have quickly succumbed to the urchins’ tiny teeth. The New York Times

Many Joshua Trees Were Doomed When Lightning Strikes hit the Mojave National Preserve. On August 15, the first day of California’s lightning siege, thunderstorms rolled across the Mojave National Preserve. The Cima Dome wildfire turned the preserve into a Joshua tree graveyard. Most of the charred trees remain standing, tangible, eerily beautiful ghosts in place of living trees with their crooked beauty. The ghosts will wither and the 43,273 acres of the Dome fire will be despoiled. Los Angeles Times

Getting California Grapes Off the Vine Before Fire and Smoke Ruin Them means depending on vineyard workers who are largely undocumented, and in terms of COVID-19 risk, poorly protected. The wildfires, which have so far collectively burned more than 1.6 million acres in Northern California, sparked right at the beginning of Sonoma County’s grape harvest. And they’re adding to the hazards already faced by some of the country’s poorest and least visible laborers. Gabriel Machabanski, associate director of a workers’ rights organization in Sonoma County, said “Since March, there has been so little work for low-wage workers such as day laborers and seasonal farmworkers; the current situation lends itself, more so than usual, to exploitation by employers.” A photo essay: nighttime harvesting near fires. Civil Eats

One of the Worst COVID-19 Hotspots Is Now an Epicenter of Effective Contact Tracing. After infections are identified, a team of 35 people fans out after to rapidly test people, isolate the infected and visit the homes of any who may have been exposed. Both the White Mountain Apache and nearby Navajo Nation experienced some of the country’s worst infection rates, yet both began to turn things around, in part with robust contact tracing. “We’re seen a significant decline in cases on the reservation at the same time that things were on fire for the rest of the state,” said one local epidemiologist. High Country News

Feral Pigs Change Ecosystems and Human Lives, from Texas to Montana to Saskatchewan. There are as many as 9 million feral swine across the U.S.; populations have expanded from about 17 states to 38 over the last three decades. Texas has about 1.5 million and spends upwards of $4 million annually controlling them, with little hope of eradication. Florida, Georgia, and California also have vast populations. “Pig populations are completely out of control,” said one expert. “The efforts to deal with them are about one percent of what’s currently needed.” The province of Saskatchewan may soon have more wild pigs than people. Montana’s new education campaign, “Squeal on Pigs,” is designed to push residents to report sightings to 24-hour hotline, alerting specialists in pig elimination. Undark

Articles Worth Reading: August 31, 2020

Upending Plans to Mine Precious Metals Near Alaska’s Bristol Bay, the Army Corps of Engineers Throws a New Hurdle. The Corps, which a month ago said the Pebble Mine would pose no environmental risk, now says it would mean trouble for the sockeye salmon that thrive in the area. After opposition from presidential son Donald Trump Jr. and Fox News personality Tucker Carlson, who have both been fishing in Bristol Bay, the Corps threw a new hurdle that could thwart federal permitting, finding that “discharge at the mine site would cause unavoidable adverse impacts to aquatic resources.” Also, a scientist studying the robustness of the sockeye population reports that an unusual, ancestral breed of salmon would be at risk from the mine. E&E News Hakai Magazine

The Redwoods in California’s Oldest State Park Withstood a Wildfire that tore through the area. Reporters found that fears were unrealized that many of the trees, some up to 2,000 years old, had been destroyed. And a relieved scientist pointed out that redwood forests evolved to withstand fire. Associated Press

Colorado’s Governor Is Focused on Promoting San Luis Valley Farmers’ New Approach to dealing with the increasing aridity of an area that is the epicenter of the state’s drought. Quinoa and hemp replace barley and tomatoes, and farmers form local districts to control groundwater use. Denver Post

California Sues to Block New Federal Rules Allowing Farmers Access to So Much Water from the state’s largest river systems that extinction for the delta smelt and two different salmon species could be inevitable. Two huge networks of dams and canals — whose construction led directly to the dwindling of fish populations — control water distribution to farms that supply one-third of the country’s vegetables and half of its nuts and fruit; scientists have been pressured to speed up their evaluations of the threat. KQED

Three Texas Cities Are Models of Efficient and Innovative Water Use. Austin adopted a 100-year water plan in 2018 calling for such advanced conservation and recycling programs that the city anticipates supplying a healthy share of its future water demand by reengineering its water system as a water collection and recycling loop. El Paso cut its per-capita water consumption from 205 gallons daily 30 years ago to 129 gallons today. Some of its conservation practices: subsidizing the replacement of water-wasting bathroom fixtures and regulating lawn watering. San Antonio subsidizes the distribution of digital water-flow sensors and encourages the use of native plants to replace the thirstier show species in local gardens. Circle of Blue

“Keep Immigrant Bees Out.” Environmentalists Want Honey Bees Barred from public lands in Utah. Beekeepers’ honey-bee hives sometimes travel to pollinate crops elsewhere — particularly California’s almond crop — before returning to Utah’s national forests to forage in areas free of pesticides. But honeybees are non-native. Environmentalists are petitioning to ban them from these areas, saying they may spread disease and put unnecessary pressure on native bees. Salt Lake Tribune

Shifting the Balance of Power Between Preserving Birds and Developing Energy. A 1.5-million-acre oil-and-gas development proposed in Wyoming is in the middle of a superhighway for migrating birds, and a court’s insistence on retaining federal penalties for accidental bird deaths from power lines and wind turbines. A potential go-ahead from the Interior Department could be coming soon on the project after six years of federal environmental reviews. The decision, which quoted the Harper Lee novel, saying “it’s a sin to kill a Mockingbird,” could dictate how companies operate in Wyoming for the next decade and what happens when they kill birds. E&E Daily

A Trout With Feathers: Looking At the West’s Only Aquatic Songbird. A photo essay on dippers, small gray birds that bob up and down on rocks, dive into streams, and resurface with insects in their beaks. Audubon Magazine

Graphics & the West

Where California Grows Its Food

See the most detailed survey ever done of crops and land use in California. It covers nine million acres of land devoted to grapes, alfalfa, cotton, plums, you name it – food for people and animals all over the world. View map »

California's Changing Energy Mix

A look at the energy sources California utilities have used gives us insights into the state’s progress in decarbonizing its electricity supply. In 2015, 35% of total electricity generation (in-state generation plus imported electricity) came from zero-greenhouse-gas sources, which include solar, wind, hydropower, and nuclear. View Graphic »

U.S. Conservation Easements

Conservation easements of various kinds cover more than 22 million acres of land in the United States, according to the National Conservation Easement Database, a public-private partnership. Take a look at our interactive map of nearly every conservation easement, with details on over 130,000 sites. View map »

 

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