There is no better example of environmental degradation and waste than the spread of solar farms around the world, spurred on by short-sighted public policy and abetted by a subsidy-hungry investors. As a resource drain, wind farms are right up there, but I’ll focus here on the waste and sheer ugliness of solar farms, inspired by a fine article on their inefficiency by Matt Ridley.
What An Eyesore!
On a drive through the countryside you’ll see once bucolic fields now blanketed with dark solar panels. Hulking windmills are bad enough, but the panels can obliterate an entire landscape. If this objection strikes you as superficial, then your sensibilities run strangely counter to those of traditional environmentalists. It would be a bit less aesthetically offensive if solar farms actually solved a problem, but they don’t, and they impose other costs to boot.
Paltry Power
In terms of power generation, solar collection panels represent an inefficient use of land and other resources. Solar power has very low energy density relative to other sources. As Ridley says:
“Solar power needs around 200 times as much land as gas per unit of energy and 500 times as much as nuclear. Reducing the land we need for human civilisation is surely a vital ecological imperative. The more concentrated the production, the more land you spare for nature.“
The intermittency of solar power means that its utilization or capacity factor is far less than nameplate capacity, yet the latter is usually quoted by promoters and investors. The mismatch in timing between power demand and power generated by solar will not be overcome by battery technology any time soon.
And yet governments coerce taxpayers in order to create artificially high returns on the construction and operation of solar farms, a backward intervention that puts more efficient sources of power at a disadvantage.
Seduction On the Farm
Solar farms installed on erstwhile cropland reflect confused public priorities. Land that is well-suited to growing crops or grazing livestock is probably better left available for those purposes. Granted, rural landowners who add solar panels probably limit installations to their least productive crop- or rangeland, but not always. Private incentives are distorted by the firehose of subsidies available for solar installations. Regardless, lands left fallow, dormant or forested still put the sun’s energy to good ecological use.
Capital invested in solar power entails unutilized capacity at night and under-utilized capacity over much of the day. Peaks in solar collection generally occur when power demand is low during daylight hours, but it is unavailable when power demand is high in the evening. Battery technology remains woefully inadequate for effective storage, necessitating a steep ramp in back-up power sources at night. And those back-up sources are, in turn, underutilized during daylight hours. The over-investment made necessary by renewables is staggering.
Landowners can try to grow certain crops underneath or between panels, or grass and weeds for grazing livestock, on what sunlight reaches ground level. This is known as Agrivoltaics. It comes with extra costs, however, and it is a bit of a dive for crumbs. Ridley says agrivoltaics is a zero-sum game, but the federal government offers subsidized funding for “experiments” of this nature. Absent subsidies, agrivoltaics might well be negative-sum in an economic sense.
Environmental Hazards
Ridley discusses the severe environmental costs and add-on risks of solar farming to local environments. Fabrication of the panels themselves requires intensive mining, processing and energy consumption. In the field, the underlying structural requirements are massive. The panels raise air temperatures within their vicinity and present a hazard to waterfowl. Panels damaged by storms, birds, or deterioration due to age are pollution hazards. Furthermore, panels have heavy disposal costs at the end of their useful lives. and old panels are often toxic. Adding today’s inefficient battery technology to solar installations only compounds these environmental risks.
Better Alternatives
Solar and renewable energy advocates seem to have little interest in the efficiency advantages of dispatchable, zero-carbon nuclear power. Nor will they wait for prospective space-based solar collection. Instead, they continue to push terrestrial solar and the idle capital it entails.
It’s worth asking why advocates of energy planning tolerate the obvious ugliness and inefficiencies of solar farming. Of course, they are preoccupied with climate risk, or at least they’d like for you to be so preoccupied. They prescribe measures against climate risk that seem to offer immediacy, but these measures are ineffectual at best and damaging in other ways. There are better technologies for producing zero-carbon energy, and it looks as if the power demands of the AI revolution might finally provide the impetus for a renaissance in nuclear power investment.
This is a first for me…. The following is partly excerpted from a post of two weeks ago, but I’ve made a number of edits and additions. The original post was way too long. This is a bit shorter, and I hope it distills a key message.
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Failures of industrial policies are nothing new, but the current manipulation of electric power generation by government in favor of renewable energy technologies is egregious. These interventions are a reaction to an overwrought climate crisis narrative, but they have many shortcomings and risks of their own. Chief among them is whether the power grid will be capable of meeting current and future demand for power while relying heavily on variable resources, namely wind and sunshine. The variability implies idle and drastically underutilized hours every day without any ability to call upon the assets to producewhen needed.
The variability is vividly illustrated by the chart above showing a representative daily profile of power demand versus wind and solar output. Below, with apologies to Dante, I describe the energy hellscape into which we’re being driven on the horns of irrational capital outlays. These projects would be flatly rejected by any rational investor but for the massive subsidies afforded by government.
The First Circle of Dormancy: Low Utilization
Wind and solar power assets have relatively low rates of utilization due to the intermittency of wind and sunshine.Capacity factors for wind turbines averaged almost 36% in the U.S. in 2022, while solar facilities averaged only about 24%. This compared with nuclear power at almost 93%, natural gas (66%), and coal (48%).
Despite their low rates of utilization, new wind and solar facilities are always touted at their full nameplate capacity. We hear a great deal about “additions to capacity”, which overstate the actual power-generating potential by factors of three to four times. More importantly, this also means wind and solar power costs per unit of output are often vastly understated. These assets contribute less economic value to the electric grid than more heavily utilized generating assets.
Sometimes wind and solar facilities are completely idle or dormant. Sometimes they operate at just a fraction of capacity. I will use the terms “idle” and dormant” euphemistically in what follows to mean assets operating not just at low levels of utilization, but for those prone to low utilization and also falling within the Second Circle of Dormancy.
The Second Circle of Dormancy: Non-Dispatchability
The First Circle of Dormancy might be more like a Purgatory than a Hell. That’s because relatively low average utilization of an asset could be justifiable if demand is subject to large fluctuations. This is the often case, as with assets like roads, bridges, restaurants, amusement parks, and many others. However, capital invested in wind and solar facilities is idle on an uncontrollable basis, which is more truly condemnable. Wind and solar do not provide “dispatchable” power, meaning they are not “on call” in any sense during idle or less productive periods. Not only is their power output uncontrollable, it is not entirely predictable.
Again, variable but controllable utilization allows flexibility and risk mitigation in many applications. But when utilization levels are uncontrollable, the capital in question has greatly diminished value to the power grid and to power customers relative to dispatchable sources having equivalent capacity and utilization. It’s no wonder that low utilization, variability, and non-dispatchability are underemphasized or omitted by promoters of wind and solar energy. This sort of uncontrollable down-time is a drain on real economic returns to capital.
The Third Circle of Dormancy: Transmission Infrastructure
The idleness that besets the real economic returns to wind and solar power generation extends to the transmission facilities necessary for getting power to the grid. Transmission facilities are costly, but that cost is magnified by the broad spatial distribution of wind and solar generating units. Transmission from offshore facilities is particularly complex. When wind turbines and solar panels are dormant, so are the transmission facilities needed to reach them. Thus, low utilization and the non-dispatchability of those units diminishes the value of the capital that must be committed for both power generation and its transmission.
The Fourth Circle of Dormancy: Backup Power Assets
The reliability of the grid requires that any commitment to variable wind and solar power must also include a commitment to back-up capacity. As another example, consider shipping concerns that are now experimenting with sails on cargo ships. What is the economic value of such a ship without back-up power? Can you imagine these vessels drifting in the equatorial calms for days on end? Even light winds would slow the transport of goods significantly. Idle, non–dispatchable capital, is unproductive capital.
Likewise, solar-powered signage can underperform or fail over the course of several dark, wintry days, even with battery backup. The signage is more reliable and valuable when it is backed-up by another power source. But again, idle, non-dispatchable capital is unproductive capital.
The needed provision of backup power sources represents an imposed cost of wind and solar, which is built into the cost estimates shown in a section below. But here’s another case of dormancy: some part of the capital commitment, either primary energy sources or the needed backups, will be idle regardless of wind and solar conditions… all the time. Of course, back-up power facilities should be dispatchable because they must serve an insurance function. Backup power therefore has value in preserving the stability of the grid even while completely idle. However, at best that value offsets a small part of the social loss inherent in primary reliance on variable and non-dispatchable power sources.
We can’t wholly “replace” dispatchable generating capacity with renewables without serious negative consequences. At the same time, maintaining existing dispatchable power sources as backup carries a considerable cost at the margin for wind and solar. At a minimum, it requires normal maintenance on dispatchable generators, periodic replacement of components, and an inventory of fuel. If renewables are intended to meet growth in power demand, the imposed cost is far greater because backup sources for growth would require investment in new dispatchable capacity.
The Fifth Circle of Dormancy: Outages
The pursuit of net-zero carbon emissions via wind and solar power creates uncontrollably dormant capital, which increasingly lacks adequate backup power. Providing that backup should be a priority, but it’s not.
Perhaps much worse than the cost of providing backup power sources is the risk and imposed cost of grid instability in their absence. That cost would be borne by users in the form of outages. Users are placed at increasing risk of losing power at home, at the office and factories, at stores, in transit, and at hospitals. This can occur at peak hours or under potentially dangerous circumstances like frigid or hot weather.
Outage risks include another kind of idle capital: the potential for economy-wide shutdowns across a particular region of all electrified physical capital. Not only can grid failure lead to economy-wide idle capital, but this risk transforms all capital powered by electricity into non-dispatchable productive capacity.
Reliance on wind and solar power makes backup capacity an imperative. Better still, just scuttle the wind and solar binge and provide for growth with reliable sources of power!
QuantifyingInfernal Costs
A “grid report card“ from the Mackinac Center for Public Policy gets right to the crux of the imposed-cost problem:
“… the more renewable generation facilities you build, the more it costs the system to make up for their variability, and the less value they provide to electricity markets.”
The report card uses cost estimates for Michigan from the Center of the American Experiment. Here are the report’s average costs per MWh through 2050, including the imposed costs of backup power:
—Existing coal plant: $33/MWh
—Existing gas-powered: $22
— New wind: $180
—New solar: $278
—New nuclear reactor (light water): $74
—Small modular reactor: $185
—New coal plant: $106 with carbon capture and storage (CCS)
—New natural gas: $64 with CCS
It’s should be no surprise that existing coal and gas facilities are the most cost effective. Preserve them! Of the new installations, natural gas is the least costly, followed by the light water reactor and coal. New wind and solar capacity are particularly costly.
Proponents of net zero are loath to recognize the imposed cost of backup power for two reasons. First, it is a real cost that can be avoided by society only at the risk of grid instability, something they’d like to ignore. To them, it represents something of an avoidable external cost. Second, at present, backup dispatchable power would almost certainly entail CO2 emissions, violating the net zero dictum. But in attempting to address a presumed externality (climate warming) by granting generous subsidies to wind and solar investors, the government and NGOs induce an imposed cost on society with far more serious and immediate consequences.
Deadly Sin: Subsidizing Dormant Capital
Wind and solar capital outlays are funded via combinations of private investment and public subsidies, and the former is very much contingent on the latter. That’s because the flood of subsidies is what allows private investors a chance to profit from uncontrollably dormant capital.Wind and solar power are far more heavily subsidized than fossil fuels, as noted by Mitch Rolling and Isaac Orr:
“In 2022, wind and solar generators received three and eighteen times more subsidies per MWh, respectively, than natural gas, coal, and nuclear generators combined. Solar is the clear leader, receiving anywhere from $50 to $80 per MWh over the last five years, whereas wind is a distant second at $8 to $10 per MWh …. Renewable energy sources like wind and solar are largely dependent on these subsidies, which have been ongoing for 30 years with no end in sight.”
But even generous subsidiesoften aren’t enough to ensure financial viability. Rent-enabled malinvestments like these crowd out genuinely productive capital formation. Those lost opportunities span the economy and are not limited to power plants that might otherwise have used fossil fuels.
Despite billions of dollars in “green energy” subsidies, bankruptcy has been all too common among wind and solar firms. That financial instability demonstrates the uneconomic nature of many wind and solar investments. Bankruptcy pleadings represent yet another way investors are insulated against wind and solar losses.
SubsidizedOff-Hour (Wasted) Output
This almost deserves a sixth circle, except that it’s not about dormancy. Wind and solar power are sometimes available when they’re not needed, in which case the power goes unused because we lack effective power storage technology. Battery technology has a long way to go before it can overcome this problem.
When wind and solar facilities generate unused and wasted power during off-hours, their operators are nevertheless paid for that power by selling it into the grid where it goes unused. It’s another subsidy to wind and solar power producers, and one that undermines incentives for investment in batteries.
A Path To Redemption
Space-based solar power beamed to earth may become a viable alternative to terrestrial wind and solar production within a decade or so. The key advantages would be constancy and the lack of an atmospheric filter on available solar energy, producing power 13 times as efficiently as earth-bound solar panels. From the last link:
“The intermittent nature of terrestrial renewable power generation is a major concern, as other types of energy generation are needed to ensure that lights stay on during unfavorable weather. Currently, electrical grids rely either on nuclear plants or gas and coal fired power stations as a backup…. “
Construction of collection platforms in geostationary orbit will take time, of course, but development of space-based solar should be a higher priority than blanketing vast tracts of land with inefficient solar panels while putting power users at risk of outages.
No Sympathy for Malinvestment
This post identified five ways in which investments in wind and solar power create frequent and often extended periods of damnably dormant physical capital:
Low Utilization
Nondispatchable Utilization
Idle Transmission Infrastructure
Idle Backup Generators
Outages of All Electrified Capital
Power demand is expected to soar given the coming explosion in AI applications, and especially if the heavily-subsidized and mandated transition to EVs comes to pass. But that growth in demand will not and cannot be met by relying solely on renewable energy sources. Their variability implies substantial idle capacity, higher costs, and service interruptions. Such a massive deployment of dormant capital represents an enormous waste of resources, and the sad fact is it’s been underway for some time.
In the years ahead, the net-zero objective will motivate more bungled industrial planning as a substitute for market-driven forces. Costs will be driven higher by the imposed costs of backup capacity and/or outages. Ratepayers, taxpayers, and innocents will all share these burdens.
Creating idle, non-dispatchable physical capital is malinvestment which diminishes future economic growth. The boom in wind and solar activity began in earnest during the era of negative real interest rates. Today’s higher rates might slow the malinvestment, but they won’t bring it to an end without a substantial shift in the political landscape. Instead, taxpayers will shoulder an even greater burden, as will ratepayers whose power providers are guaranteed returns on their regulated rate bases.
Bill Gates’ considerable philanthropic efforts through the Gates Foundation are well known. Much of the foundation’s activity has focused on disease control and nutrition around the globe. Education reform has also been a priority. Many of these projects are laudable, though I’m repulsed by a few (see here and here). During the coronavirus pandemic, Gates has spoken approvingly of Non-Pharmaceutical Interventions (lockdown measures), which are both coercive and ineffective (and see here). He has earned the enmity of anti-vaxers, of course, though I’m not anti-vax as long as the jabs are voluntary. The Gates Foundation funded the World Health Organization’s effort to provide guidance on digital vaccine passports, which is a de facto endorsement of discrimination based on vaccination status. His priorities for addressing climate change also raise some troubling issues, a few of which I address below.
Squeezing Policy from a Definition
Gates put a special Malthusian twist on a TED Talk he did back in 2010 using an equation for carbon dioxide emissions, which he’s reprised over the years. It gained a lot of notice in 2016 when a few sticklers noticed that his claim to have “discovered” the equation was false. The equation is:
CO2 = P x S x E x C,
where P = People, S = Services per person, E = Energy per service, and C = CO2 per energy unit.
This equation first appeared as the so-called Kaya Identity in a scientific review in 2002. Such an equation can be helpful in organizing one’s thoughts, but it has no operational implications in and of itself. At one level it is superficial: we could write a similar identity for almost anything, like the quantity of alcohol consumed in a year, which must equal the population times the ounces of alcohol per drink times the number of drinks per person. At a deeper level, it can be tempting to build theories around such equations, and there is no question that any theory about CO2 must at least preserve the identity.
There’s an obvious temptation to treat an equation like this as something that can be manipulated by policy, despite the possibility of behavioral links across components that might lead to unintended consequences. This is where Gates gets into trouble.
Reality Checks
As David Solway writes, Gates’ jumped to the conclusion that population drives carbon emissions, reinforcing a likely perspective that the human population is unsustainable. His benevolent solution? A healthier population won’t breed as fast, so he prescribes more vaccinations (voluntary?) and improved health care. For good measure, he added a third prong: better “reproductive health services”. Let’s see… what share of the 0.9 -1.4 billion reduction in world population Gates prescribed in 2016 would have come from terminated pregnancies?
In fact, healthier people might or might not want more children, but lower child mortality in the developing world would reduce certain economic incentives for high fertility. Another reliable association is between income and child bearing: an increase in “services per person” is likely to lead to smaller families, but that wasn’t given any emphasis by Gates. Income growth is simply not part of the narrative! Yet income growth does something else: it allows us to more easily afford the research and investments required for advanced technologies, including cleaner energy. These things take time, however.
Solway points to other weaknesses in Gates’ interpretation of the Kaya Identity. For example, efforts to slow population growth are not reliably associated with “services per person”, fuel efficiency, or carbon efficiency. In other words, carbon emissions may be powerfully influenced by factors other than population. China is a case in point.
Centralized industrial and social planning is generally ill-suited to advancing human well being. It’s especially suspect if the sole objective is to reduce carbon emissions. But Gates knows that lowering emissions without a corresponding drop in real income requires continuing technological advances and/or more efficient decisions about which technologies to deploy. He is a big advocate of developing cheap hydrogen power, which is far from a reality. He is also excited about carbon capture technologies, which are still in their infancy.
Renewables like wind and solar power play a large part in Gates’ vision. Those technologies cannot deliver a reliable flow of power, however, without either adequate backup capacity or a dramatic advance in battery technology. Gates over-promotes wind and solar, but I give him credit for acknowledging their intermittency. He attempts to come to grips with it by advocating nuclear backup, but it’s just not clear that he has integrated the incremental cost of the necessary backup capacity with other direct costs of these renewables… not to mention the considerable environmental costs imposed by wind and solar (see the “back-to-nature” photo at the top for a cogent illustration). Power storage at scale is still a long way off, and its cost will be significant as well.
We could deploy existing energy technologies to greater advantage with respect to carbon efficiency. We’ve already reduced CO2 emissions in the U.S. by substituting natural gas for less carbon-efficient fuels, but the Biden Administration would rather discourage its use. Gates deserves credit for recognizing the huge role that nuclear energy can play in providing zero-carbon power. Despite that, he still can’t quite bring himself to admit the boneheadedness of heavy reliance on intermittent renewables.
Bill’s “Green Premium”
Gates seems to have deemphasized the Kaya Identity more recently. Instead, his focus has shifted to the so-called “green premium”, or the incremental cost of using zero-carbon technology relative to a traditional source. Needless to say, the premium is large for truly zero-carbon sources, but Gates emphasizes the importance of using the green premium to guide development even in the here and now.
That’s fine, but it’s not clear that he gives adequate consideration to cases in which emissions, while not eliminated, can be reduced at a negative incremental cost via appropriate substitution. That describes the transition to natural gas from other fuels. This is something that markets can do without the assistance of ham-handed interventionists. Gates prefers nuclear power and says natural gas is “not a real bridge technology” to a zero carbon future. That’s short-sighted and reflects an absolutist mindset that ignores both the economic and political environment. The thinking is that if it’s not zero emissions, it’s not worth doing.
Gates emphasizes the need to sharply reduce the range of green premia on various technologies to achieve net-zero carbon emissions by 2050. But the goal of net-zero emissions 2050 is based on the highly unlikely proposition that global catastrophe awaits failing net-zero. In fact, the predicted consequences of doing nothing are based on drastic and outdated carbon growth scenarios and rudimentary carbon-forcing models that have proven to be severely biased to the upside in terms of predicting global temperature trends.
The idea that 2050 is some kind of “deadline” is a wholly arbitrary determination. Furthermore, the absolutism with which such goals are stated belies a failure to properly assess the true costs and benefits of carbon-based energy. If we so much as accept the notion that fossil fuels have external costs, we are then expected to accept that zero carbon emissions is optimal. This is not “science”; it is doctrine propped-up by bizarre and false scare stories. It involves massive efforts to manipulate opinion and coerce behavior based upon shoddy forecasts produced by committee. Even carbon capture technology is considered “problematic” because it implies that someone, somewhere, will use a process that emits CO2. That’s a ridiculous bogeyman, of course, and even Gates supports development of carbon capture.
Conclusion
I’ve never felt any real antipathy for Bill Gates as a person. He built a fortune, and I used his company’s software for most of my career. In some ways I still prefer it to macOS. I believe Gates is sincere in his efforts to help humanity even if his efforts are misdirected. He seems to reside on the less crazy end of the spectrum of climate alarmists. He’s putting a great deal of his private resources toward development of technologies that, if successful, might actually lead to less coercion by those attempting to transform private energy decisions. Nevertheless, there is menace in some of the solutions to which Gates clings. They require concerted action on the part of central authorities that would commandeer private resources and abrogate liberty. His assertion that the world is over-populated is both dubious and dangerous. You can offer free health care, but a conviction that the population must be thinned can lead to far more radical and monstrous initiatives.
The “green premium” promoted by Gates is an indirect measure of how far we must go to achieve parity in the pricing of carbon and non-carbon energy sources, as if parity should be an objective of public policy. That proposition is based on bad economics, fraudulent analyses of trends in carbon concentrations and climate trends, and a purposely incomplete menu of technological alternatives. Yes, the green premium highlights various technological challenges, but it is also a direct measure of how much intervention via taxes or subsidies are necessary to achieve parity. Is that a temptation to policymakers? Or does it represent a daunting political barrier? It’s pretty clear that the “median voter” does not view climate change as the only priority.
In advanced civilizations the period loosely called Alexandrian is usually associated with flexible morals, perfunctory religion, populist standards and cosmopolitan tastes, feminism, exotic cults, and the rapid turnover of high and low fads---in short, a falling away (which is all that decadence means) from the strictness of traditional rules, embodied in character and inforced from within. -- Jacques Barzun
Sacred Cow Chips 