Monthly Archives: September 2023

A bright spot at the intersection of farming, electric vehicles and solar energy

by
Peggy Greb, USDA

The energy transition is in full swing across the U.S. and the world, but the changes now underway are not simple or linear. In an economy as complex and connected as ours, progress in one area will often affect other parts of the economy, creating winners and losers. 

And then there are the changes that work together synergistically and leave everyone better off. This is what we will see as renewable energy overtakes fossil fuels and electric vehicles go mainstream. These transformations will deliver another enormous benefit, this time to farmland, as they pull the rug out from under the expensive and wasteful ethanol industry. 

Counting Corn

Across the United States, more than 30 million acres of farmland is currently devoted to growing corn for a purpose other than feeding humans and animals. The corn – over 5 billion bushels every year — is processed into ethanol and then added to gasoline to comply with a federal mandate.

The U.S. Renewable Fuel Standard (RFS), enacted in 2005, requires the nation’s oil refiners to mix 15 billion gallons of corn-based ethanol into the nation’s gasoline supply annually; this is the reason why most gasoline sold in the U.S. includes 10% ethanol. The mandate was intended to cut U.S. dependence on energy imports, support farmers and reduce emissions. 

As it turned out, the RFS was primarily successful in increasing the acreage devoted to growing corn. Because of the ethanol mandate, an additional 6.9 million acres of corn were planted between 2008 and 2016. Corn is now the nation’s number one crop and, according to the U.S. Department of Agriculture, ethanol production accounts for 45% of the U.S. corn crop. Most of the rest goes to animal feed, with only 15% destined for human consumption. (A mere half of one percent of the total corn crop is sweet corn, a different plant entirely.) 

As a way to reduce emissions, however, the mandate proved a failure. A study funded by the U.S. Department of Energy and the National Wildlife Federation concluded that ethanol is at least 24% more carbon-intensive than gasoline, once land use impacts are factored in. 

It’s a bad deal for taxpayers, too. In addition to the ethanol mandate, the U.S. government subsidizes corn farmers through the federal crop insurance program, with taxpayers covering an average of 62% of the cost of insurance premiums. More than a quarter of the insurance subsidy goes to corn, and very little goes to small farms. Add to this the many concerns about water use, fertilizer, pesticides and land degradation, and it is hard to find much good in the corn ethanol program.

EVs threaten King Corn

The world is a different place now than it was in 2005, with the U.S. having become the largest oil producer in the world and a net exporter. Yet the ethanol subsidy is fiercely guarded by the corn lobby and, in spite of occasional bipartisan efforts at repeal, it seems to be untouchable politically. Indeed, last year’s Inflation Reduction Act, passed by Democrats, actually contains new credits for biofuel production that corn-state Republicans are keen on keeping even as they continue to seek rollbacks of other clean energy incentives. 

The biggest threat to the corn lobby, though, isn’t a repeal of the mandate, it’s electric vehicles. When people no longer need gasoline, they can no longer be forced to buy corn ethanol. 

Electric vehicle sales reached 5% of the U.S. new car market in 2022, and already this year they’ve hit 8.6%. JD Power projects 70% of new vehicles will be electric by 2035, with California leading the way at 94% by then. 

Many agricultural communities are in denial about EVs, preferring to believe they will never catch on in numbers enough to threaten the importance of the corn crop. And indeed, it will take decades before the last gasoline-powered cars drive off to the junkyard. But most of us can see the writing on the wall. As more vehicles become electric, more land that is now devoted to corn ethanol will become available for other purposes. 

While the ethanol industry looks to jet fuel and other possible new uses for its product, a far more promising “crop” is renewable energy. Planting wind turbines and solar panels, either alone or combined with actual crops that feed people, provides higher returns with less risk and is better for the planet. 

“Planting” more solar energy instead of corn

Wind turbines already coexist with farmland across the Great Plains, but let’s focus on solar, since that is the form of renewable energy best suited to Virginia’s landscape. Solar energy is somewhat land-intensive, but not compared to corn. A decade ago, the National Renewable Energy Laboratory calculated that we could power the country’s entire electricity demand with 10 million acres of solar panels. That’s only one-third of the land now devoted to corn ethanol. 

Since that study, solar efficiency has increased, while electricity demand has risen only modestly. With the electrification of vehicles, buildings, and everything else that can be electrified, however, electricity demand is likely to double. But even if we had no wind energy, hydropower or nuclear, and we needed 20 million acres of solar to meet the demand, that would represent only two-thirds of the land currently devoted to corn ethanol, leaving millions of acres more freed up for food crops, land conservation and rewilding.

A comparison of the energy yield of corn vs. solar shows why displacing ethanol with solar energy would be a welcome change.  An acre of corn yields 328 gallons of ethanol, which is one-third less efficient than gasoline. If you could run an internal combustion automobile entirely on ethanol (you can’t), a car averaging 40 miles per gallon could go 8,738 miles on an acre of corn. 

But that same acre “planted” in solar panels would yield 394-447 MWh per year of electricity. Even at the low end, that’s enough to power a Tesla Model 3 for over 100,000 miles.

Much of the corn crop is grown in places like Iowa and Nebraska, but even here in Virginia, 540,000 acres were planted in corn last year, second only to soybeans. Assuming 45% of Virginia’s crop goes to corn ethanol (I could not find an actual breakdown by state), that amounts to 243,000 acres that could be put to better use. That’s worth keeping in mind for the next time someone frets about farmland being “lost” to solar development.

Solar is also a more reliable crop, and a better one for small farmers. The profitability of corn growing varies by state and by year, but it is never exactly a lucrative business for any but the largest farm operations. In a good year, such as 2022, corn might return a profit of $450 per acre, minus land rents (or taxes). In a down year, such as the current one, returns can be negative once land costs are accounted for. (Rents vary considerably, averaging about $325 per acre.)

Meanwhile, solar lease rates range from $250 to $2000 per acre, depending on location and suitability. A guaranteed payment for 20 or 30 years with no work involved is a pretty attractive deal. Even putting just a portion of a farm into solar provides a form of insurance, guaranteeing a steady income flow regardless of weather and commodity price swings.

Solar is also a better deal than corn for the community, since it provides tax revenue, diversifies the local economy and conserves water. If the developer plants pollinator-friendly species around the solar panels or uses sheep instead of machinery to control grass, the benefits to the local economy increase further. 

The ethanol industry is already looking for new uses for their product, but if they don’t find takers, it is one fuel we don’t need to mourn losing.

This article first appeared in the Virginia Mercury on September 19,2023.

If Dominion’s plan is so bad, is there a better one? (Spoiler alert: yes, there is.)

by
Courtesy of Lowell Feld, Blue Virginia

In my last column I took Dominion’s Integrated Resource Plan (semi-) seriously, giving the utility the benefit of the doubt in its projections for data center growth and the alleged need for more fossil fuels to keep up with the power demands of that ravenous industry. But as I also noted, Dominion doesn’t deserve to be taken seriously with this document.

Under Virginia law, an Integrated Resource Plan (IRP) is supposed to explain how the utility expects to meet demand reliably and at low cost within the constraints of the law. In this IRP, however, Dominion asked a different question: how to make Gov. Glenn Youngkin happy by keeping fossil fuels dominant regardless of both law and cost. 

Coming up with a favorable answer required Dominion to ignore the Virginia Clean Economy Act (VCEA), create arbitrary limits on solar deployment, use wishful thinking instead of facts and, for good measure, do basic math wrong. They also assume the Youngkin administration will succeed in pulling Virginia out of the carbon-cutting Regional Greenhouse Gas Initiative (RGGI), a move that is being challenged in court. This makes Dominion’s IRP, with its plan to double carbon emissions, a sort of evil twin to a plan from any RGGI state. 

Sure enough, the governor loves it. Elsewhere, however, this evil twin found a cold reception. Experts retained by environmental, consumer and industry groups all agree that this IRP should be chucked in the trash bin and Dominion told to start over.

It’s worth taking a look at the testimony from these groups to understand where Dominion went so badly wrong, and what a better plan might look like. 

It’s all about the data centers

Northern Virginia data centers are the driving force behind Dominion’s plans to burn more coal and gas, but there is some disagreement whether their growth will be absolutely off-the-charts crazy, or merely eye-poppingly huge. Dominion’s IRP projects the data center industry’s power use in its territory will quadruple over the next 15 years, rising from 2,767 megawatts (MW) in 2022 to more than 11,000 MW in 2038. At that point it would represent close to 40% of Dominion’s load. 

Experts testifying in the IRP case believe data center demand won’t reach the dizzying heights Dominion projects. They question whether Virginia communities will accept so much new data center development, given the pushback already evident in localities like Prince William and Fauquier Counties. Their thinking is essentially that if things can’t go on this way, they probably won’t.

They also suggest that some of the demand Dominion expects may also be reflected in the plans of other utilities serving Northern Virginia’s Data Center Alley, leading to double-counting. A load forecast published by grid operator PJM shows that Northern Virginia Electric Cooperative (NOVEC) projects its data center demand to rise from about 400 MW in 2022 to 4,000 by 2028 and 8,000 by 2034. Two other cooperatives project a combined 3,000 MW of data center development in the same time period. 

Aside from data centers, demand for electricity in Dominion territory is flat or declining over the next fifteen years; presumably this is due to the increased efficiency of homes and businesses offsetting the increased demand from electric vehicles and building electrification. 

If you were already experiencing vertigo over Dominion’s data center numbers, and you are now hearing for the first time that Dominion’s numbers represent only half of the total projected data center load coming to Virginia, maybe you won’t find it all that cheering that some of that added demand could be illusory. Still, it is a reasonable point. If you reduce demand by a few thousand megawatts here and there, pretty soon you might not “need” a new gas plant.

As an aside, one Virginia utility stands out for apparently not expecting much in the way of new data centers in its territory. Appalachian Power, which serves customers in Southwest Virginia, West Virginia and Tennessee, has experienced declining demand for years, and rural Virginia leaders would dearly love to see data centers come there. Yet the PJM forecast shows Appalachian Power’s parent company, American Electric Power (AEP), told grid operators it expected only about another 200 MW on top of the 500 MW of data center load it serves across its entire 11-state territory. AEP seems to regard this as quite a lot, which, when compared with what is happening in Northern Virginia, seems rather sweet.

I can’t help but wonder how Gov. Youngkin managed to make a deal with Amazon to bring $35 billion worth of new data centers to Virginia without securing a guarantee that many of the facilities would be located in a part of the state that actually has surplus energy capacity and desperately needs new economic development. Southwest Virginia voters may have put Youngkin in office; you’d think he’d be looking out for them.

Instead of real investment today, Youngkin promises the area a little nuclear plant a decade from now, when and if small modular reactors (SMRs) prove viable. Local leaders must be muttering, “Gee, thanks.”

And this leads to another point raised by several of the experts in the IRP case: All of the load growth Dominion projects is due to a single industry in Northern Virginia; elsewhere, demand is decreasing. Yet, instead of crafting a solution specific to the industry and region experiencing runaway growth, Dominion proposes to build a fossil fuel plant 140 miles away in Chesterfield and a nuclear plant 300 miles away in another utility’s territory.

Gregory Abbott, a former SCC Deputy Director, offers a particularly withering assessment of the IRP in his testimony on behalf of environmental advocacy group Appalachian Voices. Dominion’s computer model, he says, “is proposing supply-side solutions that are not focused on solving the actual problem, are likely unnecessary, and driving costs higher than they should be.”

Although Dominion insists this IRP represents just a “snapshot in time,” Abbott says that’s misleading: The IRP “sets the stage for multi-billion-dollar investments that Dominion’s customers will pay for decades to come. If a future snapshot in time changes, based on new public policy goals or market dynamics, ratepayers are stuck with paying for these sunk costs.” 

Garbage in, garbage out

Abbott and others also note that unlike factories or other high consumers of energy, data center operators can shift some functions to other data centers elsewhere for short periods of time. Dominion could save money and reduce the need for new investments by capitalizing on this capability to develop demand-response programs tailored specifically to this industry. 

Instead, Dominion treated the surge in demand as if it were statewide and spread across all its customers; then it used a computer model to figure out how to meet the soaring demand. 

An expert for the Sierra Club, Devi Glick of Synapse Energy Economics, noted several problems with Dominion’s approach. Among them: the company told its computer model that it couldn’t select energy efficiency as a resource; it had to include gas combustion turbines in 2028; it had to adhere to artificial limits on solar, wind and battery storage; and it had to assume prices for solar that were “substantially higher than industry projections.” Dominion also did not instruct the model to account for proposed (and since finalized) new federal pollution limits that will raise the cost of burning fossil fuels, and miscalculated — by a billion dollars — the penalties associated with failure to meet the VCEA’s renewable energy requirements. 

As they say, garbage in, garbage out. The model did what it was told, and produced plans that limited solar and battery storage, called for new gas combustion turbines and/or SMRs, and kept uneconomic coal plants running past their previously-planned retirement dates. Accordingly, none of the modeled scenarios complied with Virginia law and all would be unnecessarily expensive for customers.

Synapse ran its own computer model that kept most of Dominion’s load and cost assumptions but corrected for the company’s errors and artificial constraints. The results, not surprisingly, show that building more solar and storage and retiring coal plants earlier than Dominion wants to will lower carbon emissions and “reduce costs for Dominion’s ratepayers by between $4.1 and $9.0 billion over the 25-year study period.”  

When Synapse then tweaked the model to reflect the new federal pollution rules and prices for solar and battery storage in line with industry projections, the results saw solar and battery investments soaring, while the “need” for firm capacity such as a new gas plant disappeared altogether during the planning period.  

Clean energy, vindicated

So finally, we begin to see a path forward founded on real data and not constrained by political expediency. With none of its plans meeting the basic requirements of Virginia law, Dominion should be ordered to go back to the drawing board. The company should reexamine its data center load projections and design a demand-response program tailored to that industry. Then it should re-run its computer model with energy efficiency allowed as a resource, with no artificial constraints on battery storage and renewable energy,with federal and state compliance costs associated with fossil fuels fully included and with cost estimates for solar and storage consistent with industry norms.   

The General Assembly has a role to play, too, in ensuring the data center industry does not shift costs onto other customers and cause Virginia to fall short of its carbon reduction goals. Data centers should be required to meet energy efficiency targets and to secure an increasing percentage of renewable energy on their own as a condition of obtaining generous state tax subsidies. Likewise, the State Corporation Commission should be required to ensure that data centers pay for the transmission upgrades they need. Finally, the General Assembly should pass the data center study bill adopted by the Senate this year before being killed in the House.

Finally, it’s clear that the computer models will select as much low-cost solar as they are allowed to, so the General Assembly should make it easier to build solar projects at competitive rates. They can do this by further opening the market to third-party developers, who are currently constrained by an interpretation of the VCEA that caps their share of the solar Dominion procures at 35%.

The SCC will hold a hearing on the IRP beginning September 18.

An earlier version of this article appeared in the Virginia Mercury on September 5, 2023.