Declining Fossil Fuel Prices May Slow Progress in Decarbonization
In the last issue, I addressed the recent run-up in fossil fuel prices resulting from demand outpacing production of oil and gas. In the longer term, however, as governments pursue more ambitious energy policies and consumers shift to new, climate-friendly technologies, the demand for fossil fuels will decline. As a result, energy costs will likewise decline. In the presence of falling fuel prices, how governments design climate policies will have important implications for the pace of decarbonization.
The vast majority of energy and climate policy in the United States focuses on the carbon intensity of new products. Tax expenditures subsidize new wind and solar power, new electric vehicles, and new energy-efficient windows. Regulations imposing the latest fuel economy and appliance efficiency standards apply to new items. As households and businesses buy new products and equipment subject to these subsidies and standards, they reduce their demand for fossil fuels.
These policies, however, do not influence the use of existing fossil fuel-reliant technologies. Indeed, absent policies directly targeting the price of gasoline, for example, as electric vehicles take over a larger fraction of the new-car market, someone who already owns and drives an internal combustion vehicle may soon find it cheaper to operate over time. This could slow the electrification of transportation, and reduce the scrappage rate of old, polluting gasoline-powered cars. This bifurcated market—a fast-growing new EV market and a used gas-engine market —could occur in the United States, with larger public health benefits accruing to those communities taking up EVs—typically those composed of higher-income households.
This phenomenon could also occur across countries, if one set of governments moves rapidly with policies that drive down their fuel demand while a second set does little to promote vehicle electrification. As a result, a form of emission leakage occurs—the emission reductions associated with the set of countries pursuing ambitious policies are offset some by drivers in the second set of countries who may drive gas cars more intensively and for a longer time in response to lower fuel prices.
In the meanwhile, the potential for long-term declines in natural gas prices—resulting from the transition toward building electrification—has a more complicated impact on residential consumers. Rapid electric heat pump adoption could reduce demand for natural gas and depress the price for the fuel. This could lower the cost to keep a house warm for those relying on natural gas furnaces or boilers.
Heat pump adoption, however, would reduce the number of gas customers on a given distribution network. Over time, the natural gas utility would likely need to increase rates per customer to cover the fixed costs of the local system. This could offset the fall in fossil fuel prices. The question is whether those slow to adopt heat pumps have the resources to make a large up-front investment in a new unit. Households with financing constraints may bear the higher costs of being the last movers to the new technology, and these costs could be regressive, given the socio-demographics of early heat pump adoption.
The functioning of energy markets coupled with incomplete climate policy that focuses primarily on new investment highlights two decarbonization challenges. First, those slower to adopt new technologies may find it economic to continue to delay clean energy adoption as fuel prices fall. This would slow the transition away from fossil fuels. Second, the distribution of the net benefits of decarbonization may continue to skew toward higher-income households and communities. This could weaken public support for an aggressive decarbonization program.
Policymakers could expand the climate policy toolkit to address these challenges. First, directing electric vehicle and heat pump subsidies to lower-income households could enhance the progressivity of decarbonization and target slow adopters of zero-carbon technologies.
Second, an economy-wide carbon price—through a cap-and-trade program or a tax—would ensure that fossil fuel markets don’t work against decarbonization. Carbon pricing provides incentives to decarbonize both new technology and existing technologies. This is in contrast to subsidies and regulations for electric vehicles and heat pumps—which influence only the carbon intensity of new investment.
Carbon pricing can also accelerate the timing of new investment and facilitate the transition away from fossil fuels. This occurs because the carbon price raises the retail price for fossil fuels, while decreasing the price paid to fossil fuel producers. In contrast to subsidies and regulations, which do not raise revenues, a carbon pricing policy could raise significant monies. Returning these revenues to households would promote progressivity and public acceptance of higher fuel costs.
Declining Fossil Fuel Prices May Slow Progress in Decarbonization