Advocates for protecting the waters of the Straits of Mackinac are raising safety and financial concerns about a Canadian natural gas company's proposal for an underwater pipeline tunnel.

Enbridge Energy currently operates the Line 5 pipeline, which runs under the Straits of Mackinac, and now they're proposing to replace it with a tunnel to run the pipeline through.

But experts say the current plan has major safety flaws.

Sean McBrearty, Michigan legislative and policy director for Clean Water Action and campaign coordinator for Oil and Water Don't Mix, noted Enbridge filed papers with the federal Energy Regulatory Commission claiming they plan to depreciate all of their pipelines within 20 years. But he said the contract with the state to build and operate the pipeline in the tunnel is for 99 years.

"If Enbridge were able to build this tunnel and have it operable by 2028 or '29, which is about as soon as they'd be able to do something like this, that tunnel would only operate for 11 years before Enbridge would be done using their pipeline system," McBrearty explained.

Enbridge officials have said the report to the Energy Regulatory Commission is for determining the cost-of-service toll for investors, and does not necessarily reflect the lifespan of the tunnel. Oil and Water Don't Mix and other groups are calling on Enbridge to suspend activities on the tunnel project until the contract is reviewed.

Brian O'Mara, an environmental engineer with decades of tunneling experience, said the poor quality of the bedrock will make completing the tunnel challenging. He pointed out it is possible an explosion or fire would put workers at risk and many thousands of gallons of natural-gas liquids could be released into the Great Lakes.

O'Mara argued it could be prevented by filling the tunnel with concrete around the pipeline.

"You need air, you need a spark, and you need a fuel to create an explosion or a fire," O'Mara emphasized. "So if they would have adapted that method -- it's called a sealed annulus -- that essentially will eliminate the risks."

Enbridge has said there is no source of a release that could cause an explosion, but O'Mara contended they have identified dissolved methane in groundwater where the tunnel and pipeline would be constructed. And with flammable and explosive liquids and gas running through the pipeline, there is too much risk with the current design.

Indiana lawmakers have approved a measure to study ways to use advanced transmission technologies to squeeze more energy from the state's aging electrical grid.

The technology is a suite of hardware and software which can boost the capacity of current transmission lines and perhaps postpone the need for new infrastructure. Backers of the plan said because it is deployed on existing towers, it can reduce cost, modernize without new construction and increase the system's energy capacity.

Sen. Eric Koch, R-Bedford, a co-sponsor of the bipartisan bill, said the state faces an ever-increasing demand for energy.

"We're hearing projections of a single data center using one or maybe even two gigawatts," Koch pointed out. "A gigawatt is about the size of the consumption of residential use in the city of Indianapolis. It is a large amount of electricity being projected to be needed."

Colorado, Maine and Utah are among the states to have already deploying the system and are studying its effectiveness. Senate Bill 422, signed last week by Gov. Mike Braun, was backed by a variety of groups, including AARP Indiana, the Hoosier Environmental Council and The Pew Charitable Trusts.

Current customers and future demand for new technologies drive the need for more energy.

Carter Harms, state campaigns officer for the Pew Charitable Trusts, said the list is growing.

"Increased domestic manufacturing, increased needs from data centers, partially due to artificial intelligence, and then also increased electrification," Harms outlined. "Because of that growing demand, we're seeing strain on the electric grid."

Koch added one of Indiana's power utilities tested the system and obtained positive results.

"We did have the benefit of one of our five investor-owned utilities here in Indiana, AES, pilot a type of ATT called Dynamic Line Ratings," Koch noted. "The results were favorable, and that gave us some confidence that the 'juice is going to be worth the squeeze.'"

Support for this reporting was provided by The Pew Charitable Trusts.

Oregon ranked ninth this year on The State Energy Efficiency Scorecard. The American Council for an Energy-Efficient Economy, a nonprofit research organization, ranked states based on their latest policy developments and efforts to save energy.

This year's scorecard highlighted Oregon's performance standard for large commercial buildings and efforts to upgrade existing buildings.

Jennifer Kalez, communications director for the Oregon Department of Energy, said even though the state's energy demands continue to increase with the population, Oregon's per capita energy consumption is down.

"While we may have more people in our state, we're using less energy per person thanks to efficiency and conservation efforts," Kalez explained.

Oregon also scored points for zero-emission vehicle policies, including EV rebates and emissions standards. Energy Trust of Oregon, a nonprofit helping people save energy by making their homes more efficient, was recognized in the scorecard for promoting equity.

Julianne Thacher, communications and marketing lead for the Energy Trust of Oregon, said they are designing programs to meet the needs of utility households in rural areas, those with low and moderate incomes, communities of color and small businesses.

"For the state to save more energy going forward and meet its climate goals, we need everyone to be able to directly participate in our programs and benefit and lower energy bills," Thacher contended.

The Trump administration has paused key Biden-era funding, including the Inflation Reduction Act, which supports investments in energy efficiency, clean energy and electric vehicle manufacturing. Kalez noted for now, Oregon's federal funding is still available, and federal energy efficiency programs will continue despite the uncertainty.

Appalachian communities in Kentucky are poised to become manufacturing hubs for the wind energy industry, experts say.

The region's workforce, accessible transportation routes, and stash of coal ash deposits -- which contain rare earth metals needed for turbine production -- all point to a role for Appalachia in the industry's supply chain.

Larry Holloway, professor of electrical and computer engineering at the University of Kentucky, said wind energy is a quickly growing industry in America. He pointed out more than 11% of all power produced in the U.S. comes from wind turbines and the number grows by 2% each year.

"Wind is pretty inexpensive," Holloway explained. "It depends in part on where in the country you are, how much wind you have and so forth, but it is one of the lowest cost energy sources. And in 2024, several months in a row, wind outproduced coal nationally."

According to federal data, the American wind energy industry currently supports more than 120,000 jobs and the number of wind turbine technicians is expected to grow by 60% over the next decade.

Critics have argued wind power comes with expensive production and maintenance costs, and long-term environmental impacts.

Mike Shields, senior economist for ReImagine Appalachia, said to help with the transition to wind-based power, decommissioned coal power plants could be repurposed as manufacturing facilities for parts used in wind turbines.

"We know that wind turbines are major infrastructure and there are a lot of working parts in those," Shields emphasized. "How our communities can participate in that supply chain is really the key thing that we want to take a look at."

While it remains unclear how tariffs will affect the nation's ability to develop more wind turbine parts, Holloway stressed U.S. based manufacturing is strong.

"There are a number of final assembly lines and parts that are already made in the U.S.," Holloway underscored. "We may, in fact, see even more demand in that area coming in the future as well."

According to a 2024 Pew Research Center survey, 33% of Americans think a wind turbine farm would positively affect their local economy, while 9% said wind turbines would hurt it. Another 27% said installing a wind turbine farm would make no difference.