Environmental groups are pleased with an Iowa Utilities Board ruling that requires MidAmerican Energy to make planning studies public for its Iowa Wind PRIME project.

The massive green energy project is expected to add more than 2,000 megawatts of wind energy and 50 megawatts of solar energy to the power grid.

But some groups say the public should be able to see the background studies, including what MidAmerican might do with its coal plants.

Sierra Club Senior Attorney Laurie Williams said Iowans deserve to know if the $3.9 billion facility is a reasonable alternative to other green energy solutions.

"I think it's a powerful statement of accountability," said Williams. "MidAmerican is a monopoly utility that recovers rates from captive customers. And what the board is saying is the public deserves transparency into how the utility is making decisions about how it plans to meet electricity needs."

MidAmerican says the Wind PRIME project is part of the utility's plan to provide 100% renewable energy for its customers without raising rates.

The company still operates a half dozen coal-fired power plants.

MidAmerican also operates 36 wind projects with more than 3,300 turbines across Iowa.

The company says in addition to providing more renewable energy, Wind PRIME would offer customers rate stability.

But Williams said other utilities are required to provide more information to the public, to make sure they're spending money wisely - and MidAmerican should not get a special exception.

"Not all of the information in these studies should be privileged or confidential," said Williams. "The high-level information contained in the study doesn't warrant a 'trade secret' designation."

Iowa is among the nation's leaders in wind energy production, which makes up 58% of the state's electricity generation.

Overseas markets could be harming forests in the U.S. Demand for wood pellets for biomass energy has increased dramatically around the world, especially in Europe where burning wood is treated as renewable energy and heavily subsidized.

The UK-based company Drax Group plans to build a 450,000 ton per year wood pellet plant in Longview.

Peter Riggs, director of the Washington state-based nonprofit Pivot Point, said the region has a productive wood sector.

"This new wood pellet plant proposed for Longview is very different," Riggs pointed out. "First of all, it's not for the domestic market, it's not making pellets for home stoves. It represents a substantial and entirely new source of wood fiber demand for export."

Riggs said much of the biomass would be bound for Asia. His organization signed a letter, along with more than 100 others in the U.S. and Canada, calling for the European Union to stop incentivizing wood burning as renewable energy.

Laura Haight, U.S. policy director for the Partnership for Policy Integrity, said despite its label as renewable energy, burning wood from forests one of the worst activities for the environment. It releases emissions when burned and removes trees that store carbon. Haight's organization also signed the letter to the European Union, urging it to no longer classify forest biomass as renewable.

"It's the money that's driving this system," Haight asserted. "If they change that policy, then this will no longer be subsidized, and we can see a better future for our forests and for our climate."

Riggs noted solar and wind energy were subsidized, and the costs have gone down dramatically. However, the same is not true for forest biomass. He emphasized plant operators have struggled to reduce the costs involved in sourcing, transporting and burning biomass fuels.

"If they're going to subsidize it, you kind of got to subsidize it forever," Riggs contended. "But with wind and solar, those are already cost-competitive."

The U.S. Department of Agriculture has awarded Iowa State University a $1.8 million grant to raise high-dollar crops in the shadow of huge solar array panels that are becoming more common across the state.

Ag researchers and energy experts are studying ways for people to benefit from investments in renewable energy beyond just clean electricity.

It's called agrivoltaics, and it couples solar farms with agricultural practices in, around and underneath huge solar panels, where the resulting shade won't allow traditional agricultural crops to grow well.

Matt O'Neill - professor in plant biology, entomology and microbiology at Iowa State - said researchers are trying what are known as horticultural crops in the shadow of the solar arrays, crops he said could grow better and also tend to be more valuable.

"It's a mix of things," said O'Neill. "It can be things like broccoli, tomatoes, squashes - but also perennial crops like strawberries and blackberries and raspberries. "

O'Neill said Iowa's corn and soybeans, known as commodity crops, need a lot of land to be grown profitably - which is why he says 70% of Iowa's landscape is planted with them.

He said the growing number of solar farms will create more available land for horticultural crops, potentially creating another avenue for people who want to get into farming on a smaller scale than commodity crops such as corn and soybeans require.

O'Neill said there is some evidence that growing horticultural crops beneath the panels creates a cooler micro-climate, allowing the solar arrays to operate more efficiently when they are producing electricity.

Anne Kimber directs the Electric Power Research Center at Iowa State. She said given all of the benefits, she wants people to understand that using farmland in multiple ways - as agrivoltaics does - will be economically and environmentally beneficial for everyone.

"But that means that we're using land in a different way for those kinds of home-grown power systems," said Kimber. "And if we can demonstrate multiple values from these projects, then it does have greater value for the state of Iowa. It has greater value to the people who see these developments happening around them."

Construction on the 1.35-megawatt solar-farm agrivoltaics test site will begin next month on 10 acres south of Ames. Research is scheduled to begin next spring.

Tucson community leaders gathered at an event to highlight opportunities to grow Arizona's clean-energy economy say it's been made more accessible through incentives in President Joe Biden's Inflation Reduction Act and the Infrastructure Investment and Jobs Act.

Tucson City Council member Kevin Dahl predicted that clean-energy incentives will not only help lower-income households in the state consider solar but will also address a previous gap in benefits for nonprofit organizations. The IRA bill allocates $20 billion for nonprofits to implement projects that cut pollution and energy costs.

"Even as the clean-energy industry has exploded in our state, a lot of Arizonans have been left out," he said. "New solar incentives, however - including a 30% tax credit off the cost of installation and another 30% for standalone battery installation - will be transformative."

Leaders have estimated an additional 150,000 Arizona households will install rooftop solar panels because of the investments present in the Inflation Reduction Act.

More solar power may also be coming to rural Arizonans, with increased funding for the Rural Energy for America Program. It provides grants and loans to farms and small businesses that invest in clean-energy technology.

Robert Neifert, director of business development for Solar Gain, Inc. and co-chair of the Arizona Solar Energy Industries Association, said he's excited about what this could mean for Arizona. He said they're already seeing an uptick in business.

"We were looking at the tax credit going down to 22 [percent], and then down to 10 [percent], and wondering what would happen to solar, in Arizona and the country," he said. "And now, it's turned the other direction and we're more excited than ever. And having 10 years of certainty is absolutely amazing."

Neifert said what is important about the clean-energy transition is that it be accomplished affordably and executed fairly. As some members of Congress try to roll back investments in clean energy, all speakers at the event shared an urgent need to continue with what they called "bold climate action."