Dominion Virginia Power released its updated Integrated Resource Plan (IRP) this week with a press release that promised thousands of megawatts (MW) of new solar power and a dramatically lower carbon footprint. In a remarkable turnabout, the Executive Summary declares, “The Company must now prepare for a future in which solar PV generation can become a major contributor to the Company’s overall energy mix.”
Alas, a closer look reveals Dominion will actually increase its carbon emissions over the period studied. Meanwhile, the solar would be built at a rate of only 240 MW per year over the 15-year period covered by the IRP, about the same amount being installed in Virginia this year. (Over 25 years, Dominion says its solar could reach 5,200 MW, which means the pace of installation would actually drop in the out years.) That should elicit yawns, not excitement.
The solar numbers pale in comparison to the more than 4,600 MW of new natural gas combined-cycle plants Dominion has been building just in this decade. (Remember that solar farms generate electricity at about 20-25% of “nameplate” capacity on average, while combined-cycle gas plants nationally average 50-60%, and can achieve 70% or higher.*) And even come 2032, the new solar will make up only a tiny fraction of a generation portfolio that consists almost entirely of coal, gas and nuclear.
I’ll be interested to see the numbers analyzed, but my guess is that all the renewable energy Dominion proposes to build over the next 15 years represents no more than 5-10% of its total electric generation. That’s too little, too late, in a state that can do so much better.
So the more things change, the more Dominion stays the same. Behind the hype being offered to the press stands a utility that is still committed to fossil fuels and nuclear power.
Virginia utilities file IRPs with the State Corporation Commission (SCC) every year. The plans are supposed to reflect the utilities’ best sense of how they will meet consumers’ needs for electricity while complying with state and federal laws and policies. This involves some guesswork about the direction of future regulations, including regulations of CO2 emissions.
In spite of President Trump’s determination to roll back climate protections while he is in office, Dominion’s IRP assumes an eventual price on carbon. Most utilities nationwide are doing the same thing. But given the uncertainties, Dominion has chosen (as it did last year) to model different scenarios instead of committing to a single plan.
Even the low-cost plan that wouldn’t comply with the EPA Clean Power Plan contains just as much solar as the other plans, reflecting the company’s assessment (on page 3) that solar is now “cost-competitive with other more traditional forms of generation, such as combined-cycle natural gas.”
Yet the carbon reductions Dominion promises in its press release appear to be something of a sleight-of-hand. For one thing, Dominion has chosen to compare its CO2 output in 2032 to its output in 2007, not 2017. CO2 emissions were markedly higher in 2007 than now, with the shale gas boom and the rise of renewables leading to massive coal retirements in the interim.
Moreover, a careful reading of the press release reveals the reductions Dominion promises are per-capita, not overall. A chart on page 115 of Dominion’s IRP shows every one of the scenarios Dominion studied will actually increase the company’s total CO2 emissions between now and 2042.
That reality exasperates climate activists. Glen Besa, former Director of the Virginia Chapter of the Sierra Club, comments, “The only impression you could have reading Dominion’s release was that it was making dramatic reductions in carbon pollution, which obviously is not the case.”
CO2 emissions would not increase if Dominion were simply shutting down coal and building more solar. But all of the alternative scenarios Dominion models for its IRP contain more gas plants: at least another 1,374 MW of gas combustion turbines in all plans, and 1,591 MW of combined cycle gas in some scenarios. Combustion turbines are more flexible than combined-cycle plants and so are better for meeting spikes in demand and integrating renewable energy like solar, but while they run less often, they are typically higher-polluting. Many utilities are using demand response or installing battery storage instead; Dominion appears to prefer gas.
All this gas means higher CO2 output. Not incidentally, burning more gas also means more business for Dominion’s parent corporation, Dominion Resources (soon to be known as Dominion Energy), which is heavily invested in gas transmission. And crucially, Dominion Energy needs more gas power plants to justify building the Atlantic Coast Pipeline. So building more gas plants serves the interests of Dominion’s affiliates, not its customers.
The problem with building new gas plants is that it lowers carbon only so far compared to coal, and then you’re stuck at that level for the life of the gas plants, unless you’re willing to abandon them early. That’s why any utility that’s serious about protecting ratepayers from stranded costs has to invest in wind, solar, energy efficiency and storage, not natural gas.
Speaking of wind, the IRP includes the 12 MW pilot project known as VOWTAP in all of the plans, even though Dominion lost millions of dollars in federal funding when it would not commit to building the two test turbines by 2020, three years past the original deadline. But none of the scenarios studied include any land-based wind, and none include a build-out of the federal offshore wind energy area Dominion bought the rights to, which could support at least 2,000 MW of offshore wind power. This is a strange omission given that Dominion continues to include a scenario in which it would build the world’s most expensive nuclear reactor, known as North Anna 3.
Polls consistently show overwhelming public support for renewable energy. Yet right now, ordinary Virginia ratepayers have no access to renewable energy unless they put solar on their own rooftop. Corporations like Amazon Web Services and Microsoft account for the bulk of the solar energy being installed in Virginia, with most of the remaining going to the military, state government, universities, and schools.
So 3,200 MW over 15 years won’t even begin to satisfy consumer demand. North Carolina installed almost 1,000 MW last year; I’d like to see Dominion set that as an annual target, bringing it up to the 15,000 MW over 15 years it modeled for last year’s IRP (before hiding the encouraging results from pubic view). Round out the solar with other cost-effective clean energy options, and we will see the kind of carbon reductions that don’t have to be fudged in a press release.
*On page 88 of the IRP, Dominion provides it own capacity factor forecasts: solar 25%, combined cycle gas 70%, gas combustion turbines 10%, nuclear 96%, onshore wind 42%, offshore wind 42%. The chart does not include a number for coal.