Iowa explores renewable energy storage


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Batteries can make solar arrays productive even after the sun goes down (flickr).

Julia Poska| November 8, 2018

Already a leader in wind energy, Iowa wants to expand its renewable energy portfolio even further. The Iowa Economic Development Authority granted $200,000 to Ideal Energy in Fairfield last month to study “solar plus” systems, solar arrays enhanced with energy storage capacity via batteries.

Without the addition of batteries, these solar grids would only supply power when the sun was shining. The batteries can supply power during outages and at night, and help “shave” energy bills by supplying energy at peak demand hours, when utility costs are highest.

Ideal Energy is currently building a large, 1.1 megawatt solar array with a 1.1 megawatt hour vanadium flow battery for the Maharishi University of Management in Fairfield. This is the largest solar plus project in the state of Iowa and will cover about a third of the university’s annual energy needs.

Ideal is also installing a somewhat smaller array with a lithium-ion battery at the Agri-Industrial Plastics Company in Fairfield. The battery will provide nighttime power for the company’s 24-hour production lines and save them an estimated $42,000 annually.

With the Iowa Economic Development Authority grant, Ideal will assess and compare the performance, efficiency and maintenance of both systems in partnership with Iowa State University’s Electric Power Research Center. A statewide committee, established by the 2016 Iowa Energy Plan, will evaluate the research to inform future solar plus projects in the state.

 

 

Plea for Iowa to join U.S. Climate Alliance


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An Iowa wind farm extends as far as the eye can see. (News/flickr)

Jenna Ladd | February 16, 2018

President Trump decided to remove the United States from the Paris Climate Accord in September, and since then numerous U.S. governors have expressed their desire to stay in the treaty through the U.S. Climate Alliance.

The bi-partisan Climate Alliance is “committed to reducing greenhouse gas emissions consistent with the goals of the Paris Climate Agreement.” Its members represent 40 percent of the total U.S. population and at least $7.4 trillion dollars in U.S. gross domestic product. Sixteen governors are members of the alliance currently, and a democrat in the Iowa House of Representatives is hoping to add Governor Reynolds to that list. Representative Charles Isenhart of Dubuque presented a letter to the Iowa Energy Center on Monday, asking that Iowa join the alliance. Isenhart also proposed a bill in the House of Representatives that would require Iowa’s membership in the U.S. Climate Alliance.

Isenhart said to The Register,“We’ve already done a lot and are doing a lot and have some of the mechanisms in place to do more. We should be joining if for no other reason than to take credit for what we’ve already done.” The state of Iowa leads the nation in wind energy production, and is expected to generate more than forty percent of its energy from the wind by 2020.

Julie Cerqueira is executive director of the U.S. Climate Alliance. She said in a letter,

“As I read the Iowa Energy Plan, it is clear that many of the state’s energy priorities align with the priorities of the Alliance — a focus on innovation, workforce development, modernizing our electrical grids and promoting the expansion of electric vehicles. Furthermore, Iowa’s long history of leadership in clean energy, in particular the successful deployment of wind power at scale, makes its membership in the U.S. Climate Alliance both logical and valuable.”

A spokesperson for Governor Reynolds says that the governor has not yet considered joining the U.S. Climate Alliance.

 

 

Wind energy continues to be a competitive and growing industry


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Wind turbines are an increasingly common site along rural Iowa roads. (Samir Luther/flickr)
Jenna Ladd | September 12, 2017

The recently released 2016 Wind Technologies Market Report found wind energy to be a competitively priced and growing part of the U.S. energy picture.

According to the annual U.S. Department of Energy report, wind energy is expected to continue being a cheaper option for consumers than other energy sources. Without figuring in federal tax credits and state-run programs, wind energy costs an average of 5 cents per kilowatt hour whereas a highly efficient natural gas power plant charges consumers an average of 5.4 cents per kilowatt hour.

The authors also found that wind turbines erected in 2016 are taller and more powerful than in years past, allowing them to generate more energy. In the last five years alone, the generating capacity of individual wind turbines has increased by 11 percent.

About 8,203 megawatts of new wind energy was added to the U.S. energy portfolio in 2016, which made up 27 percent of energy infrastructure additions last year. Twelve states now produce more than 10 percent of their energy with wind while Iowa and South Dakota remain the only states that generate upwards of 30 percent of their energy with turbines. Texas, Oklahoma and Iowa have the highest wind-capacity nationwide.

The entire U.S. Department of Energy Wind Technologies Report can be read here.

Gigantic wind turbine to multiply wind energy returns


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The Segmented Ultralight Morphing Rotor 50 (SUMR50) will tower over wind turbines that are commonly used today. (SUMR)
Jenna Ladd | July 6, 2017

Wind energy generation is expected to increase by 404 gigawatts by 2050, according to the U.S. Department of Energy, and gigantic wind turbines may play an important role.

Researchers from six universities are designing the world’s largest wind turbine, which is expected to stand at 500 meters tall. Today, the average wind turbine is about 70 meters tall and generates one to five megawatts of energy. The team predicts their design will generate up to 50 megawatts of energy.

Shooting enormous turbines further up into the atmosphere allows them to capture the stronger and more steady wind flow present at higher altitudes. The giant structures will also feature blades that are 200 meters long, compared to today’s turbine blades which are typically about 50 meters in length. In an interview with Scientific American, Christopher Niezrecki, a professor of mechanical engineering and director of the Center for Wind Energy at the University of Massachusetts Lowell, explained that if the blades double in length, they can produce up to four times as much energy.

The turbines will have two blades rather than three to reduce the weight and cost of the structures. They’ll likely be placed far off in the ocean, where they’ll be less of a disturbance to people. Researchers plan to design the turbines to withstand strong winds from hurricanes and other extreme weather events. In part, the structures will take a cue from palm trees, which frequently endure intense storms. Eric Loth is the project lead. He said,”Palm trees are really tall but very lightweight structurally, and if the wind blows hard, the trunk can bend. We’re trying to use the same concept—to design our wind turbines to have some flexibility, to bend and adapt to the flow.”

Within the year, the researchers will test a much smaller version of the design in the mountains of Colorado. They expect to produce a full-sized prototype in the next three years.

The project website reads, “Bringing our project to full fruition will be a major step toward maximizing U.S. offshore wind power.”

President Trump discusses wind energy, Paris agreement in Cedar Rapids


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President Trump and U.S. Environmental Protection Agency Administrator Scott Pruitt after the administration announced the U.S. withdrawal from the Paris Climate Accord. (Associated Press/Andrew Harnik)
Jenna Ladd | June 23, 2017

President Trump hosted a campaign-like rally at the U.S. Cellar Center in Cedar Rapids Wednesday night and made false claims related to renewable energy and climate policy.

With roughly 5,000 of his supporters in the audience, the president used his 70-minute speech to discuss his hatred for the media, the Republicans’ new health care plan, Georgia’s recent special election and more. President Trump is not known for his consistency, but he made two specific false statements related to renewable energy and climate policy which were later set straight by the Washington Post’s Energy 202.

First, the president mocked the use of wind energy in the state of Iowa. He said, “I don’t want to just hope the wind blows to light up your house and your factory as the birds fall to the ground.” This statement aligns with pre-election comments referring to wind turbines as “ugly” and claiming that they kill all the birds.

Energy 202 notes that according to the National Audubon Society, wind turbines are responsible for less than 0.01 percent of all human-related bird deaths. Far more birds are killed each year by vehicles and tall buildings. Second, the Hawkeye state generated 30 percent of its total energy from wind last year. The industry is also expected to provide 7,000 additional jobs and $9 billion in economic activity over the next three years.

Trump also mentioned his administration’s recent decision to pull out of the Paris Climate Agreement. He said, “They all say it’s non-binding. Like hell it’s non-binding.”

The problem here, Energy 202 points out, is that the agreement is non-binding. The accord called on each country to set their own goals for limiting greenhouse gases, which is likely the reason President Obama was able to get nearly all of the Earth’s nations to sign on.

Tesla introduces subtle solar roof option for homeowners


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Tesla’s solar roof in slate glass. (Tesla)
Jenna Ladd | May 23, 2017

The solar energy market experienced a 97 percent growth in 2016. In total, the U.S. has more than 42 gigawatts of solar energy capacity; that’s enough to power 8.3 million homes.

Tesla CEO Elon Musk is working to win over some U.S. homeowners who may be hesitant to install solar panels because of their bulky appearance. The company is introducing solar cell roof tiles to the market this summer that look just like conventional roofing options. The tiles are made of tempered glass, allowing the sun’s rays to reach solar cells tucked away within them. With four styles available: textured, smooth, tuscan and slate, the tiles are made to please the style-conscious homeowner.

As with many of Tesla’s products, the tiles will be cost-prohibitive for many when they first hit the market. The company estimates they will cost about $22 per square foot if a mixture of solar cell tiles and regular tiles are used and $42 dollars per square foot if only solar cell tiles are used. The company’s website reminds prospective buyers of the 30 percent Solar Investment Tax Credit, which allows consumers to deduct 30 percent of the total cost of installing solar panels from their federal income taxes.

The glass tiles come with a lifetime warranty and can allegedly handle hailstones traveling at 100 miles per hour with ease. Tesla compared this to conventional roof tiles, which shattered under the same conditions. Each tile’s solar cell is guaranteed to last 30 years.

The company started taking preorders in early May. It will begin installing roofs in California this June and complete installations throughout the country in the months that follow.

Iowa leads midwest in clean energy momentum


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The recently released top ten list ranks states not only by current performance but also potential for clean energy development in the future. (Union of Concerned Scientists)
Jenna Ladd | April 21, 2017

The Union of Concerned Scientists recently published its list of top ten states demonstrating “clean energy momentum,” and Iowa led the Midwest.

States were ranked using twelve metrics that fit into three general categories: technical progress; direct, visible effects on our daily lives; and policies to build momentum for the future. Their publication pointed out that despite recent federal rollbacks of Obama-era climate policy, great strides have been made in renewable energy development. They note that wind farms nationwide produce enough electricity to power 20 million U.S. households. Additionally, they write, enough solar electric panels were added in 2016 to power another two million houses.

The usual suspects led the pack with California at the top of the list. The Golden State is among the top performing states in eight of the metrics and is in the number one position for electric vehicle adoption. Vermont, Massachusetts, Rhode Island, Hawaii, Oregon, Maine, Washington, New York and Iowa complete the top ten list. Iowa is the first midwestern state to appear on the list, followed by Minnesota.

Wind energy has played a fundamental role in Iowa’ development as a clean energy leader. The Hawkeye state was the first to generate more than 30 percent of its energy from wind. Iowa has already seen $11.8 billion in wind project investment alongside the creation of 8,000 new jobs. Moving forward, Iowa is expected to generate 40 percent of its energy from wind by 2020.

“While the federal government can play important roles in making efficiency, renewable energy, and vehicle electrification a national priority, states can be a consistent, powerful, positive force as well,” the report read.

More information about the rankings and the full report can be found here.