When a huge utility company pledges to go carbon free — @HighCountryNews #ActOnClimate #CarbonFree

In early December, Xcel Energy, a sprawling utility that provides electricity to customers in eight states, including Colorado and New Mexico, announced that it planned to go carbon-free by 2050. In what has been a rough year for climate hawks, this was welcome news. After all, here was a large corporation pledging to go where no utility of its scale has gone before, regardless of the technical hurdles in its path, and under an administration that is doing all it can to encourage continuing use of fossil fuels.

At the Dec. 4 announcement in Denver, Xcel CEO Bob Fowkes said that he and his team were motivated in part by the dire projections in recent reports from the Intergovernmental Panel on Climate Change and the U.S. government’s Fourth National Climate Assessment. “When I looked at that and my team looked at that, we thought to ourselves, ‘What else can we do?’ ” Fowkes said. “And the reality is, we knew we could step up and do more at little or no extra cost.”

Xcel committed to 100 percent carbon-free power generation by 2050 through solar, wind, nuclear and hydropower plants like Shoshone Generating Station (middle left of photo). Fossil fuel burning may still be part of the mix if they use carbon capture and sequestration technology. Shoshone Falls, Idaho. By Frank Schulenburg – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=71359770

It was a big step, and apparently inspiring. A couple of days later, the Platte River Power Authority, which powers four municipalities on Colorado’s Front Range, pledged to go carbon-free by 2030. Here are seven things to keep in mind about Xcel’s pledge:

  1. Xcel is going 100-percent carbon-free, not 100 percent renewable. There’s a big difference between the two, with the former being far easier to accomplish, because it allows the utility to use not only wind and solar power, but also nuclear and large hydropower. It can also burn some fossil fuels if plants are equipped with carbon capture and sequestration technology.
  2. No current power source is truly clean. Solar, wind, nuclear and hydropower plants have zero emissions from the electricity generation stage. However, other phases of their life cycles do result in greenhouse gas emissions and other pollutants — think uranium mining, solar panel manufacturing and wind turbine transportation. Even the decay of organic material in reservoirs emits methane. But even when their full life cycles are considered, nuclear, wind, solar and hydropower all still emit at least 100 times less carbon than coal.
  3. Carbon capture and sequestration techniques don’t do a lot for the big picture. Even if all of the carbon emitted from a natural gas- or coal-fired power plant is captured and successfully sequestered without any leakage — and that remains a big “if” — huge amounts of methane, a potent greenhouse gas, are released during the coal mining and natural gas extraction, processing and transportation phases.
  4. Even though carbon sequestration qualifies as “clean energy,” Xcel is unlikely to utilize the technology on any large scale with coal because of the cost. Even without carbon capture, coal is more expensive than other power sources, so why spend all that money just to keep burning expensive fuel? On the other hand, natural gas is relatively cheap, so it makes more sense for Xcel to continue burning the fossil fuel with carbon capture.
  5. Economics play as much a role in this decision as environmentalism. Even as Xcel was making its announcement, executives from PacifiCorp, one of the West’s largest utilities, were telling stakeholders that more than half of its coal fleet was uneconomical, and that cleaner power options were cheaper. So even without the zero carbon pledge, Xcel likely would have abandoned coal in the next couple of decades, regardless of how many regulations the Trump administration rolls back. Meanwhile, renewable power continues to get cheaper, making it competitive with natural gas. And without some kind of big gesture, Xcel risked losing major customers. (The city of Boulder, Colorado, defected from Xcel, a process that has been going on for the last several years, because the utility wasn’t decarbonizing quickly enough.)
  6. Xcel’s move, and others like it, will pressure grid operators to work toward a more integrated Western electrical grid. A better-designed grid would allow a utility like Xcel to purchase surplus power from California solar installations, for example, or the Palo Verde nuclear plant in Arizona, and to sell its wind power back in that direction when it’s needed.
  7. Xcel needs better technology to meet its goal. Xcel admits that “achieving the long-term vision of zero-carbon electricity requires technologies that are not cost-effective or commercially available today.” It is banking on the development of commercially viable utility-scale batteries and other storage technologies to smooth out the ups and downs of renewable energy sources. If Xcel is serious about its goal, though, it will need to embrace approaches that don’t necessarily boost the bottom line. That could mean incentivizing efficient energy use, promoting rooftop solar, and implementing rate schedules that discourage electricity use during times of peak demand. It will also need to get comfortable with paying big customers not to use electricity during certain times.

Xcel’s pledge is a big step in the right direction, and it has the potential of becoming a giant leap if other major utilities follow suit. But it also underscores a sad fact: While our elected officials twiddle their thumbs and play golf with oil and gas oligarchs, the very corporations that helped get us into this mess are the ones who are left to take the lead on getting us out.

Jonathan Thompson is a contributing editor at High Country News. He is the author of River of Lost Souls: The Science, Politics and Greed Behind the Gold King Mine Disaster. Email him at jonathan@hcn.org or submit a letter to the editor.

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