Showing posts with label energy productivity. Show all posts
Showing posts with label energy productivity. Show all posts

Friday, December 04, 2009

Green Energy and Productivity

In the last year or so the rationale for renewable energy has evolved from emphasizing mainly energy security and climate change to focusing on the creation of "green jobs" and the development of an industry that many perceive as the "next big thing": a new global growth wave along the lines of information technology and telecoms. Unfortunately, neither of these newer justifications withstands serious scrutiny. I've devoted several postings to the shortcomings of the green jobs angle, which founders on the mistaken notion that we should want an energy sector any bigger than the minimum necessary to furnish the energy needed by the rest of the economy. The IT analogy looks harder to dismiss, because it capitalizes on our innate affinity for technology, the newer and trendier, the better. I share that bias and have been fascinated by the technology of alternative energy since my undergraduate years. Yet as inherently cool as the devices for deriving energy from wind, tides, solar radiation, biomass, and exotic forms of nuclear energy are, that doesn't automatically set them up to be the next world-transforming and wealth-creating industry in the manner of IT in the 1980s and '90s.

Understanding where this analogy fails requires delving into the drivers of the IT revolution. It wasn't just that technology was improving by the quantum leaps in processing power and decreased cost described by Moore's Law. Nor was it merely the result of nebulous "market forces", though the market's ability to deploy capital nimbly to the cleverest entrepreneurs helped a lot. Fundamentally, IT took off and continues to grow because it spurred breathtaking improvements in productivity and innovation, not just within the computer industry itself, but more importantly across the entire economy. IT enabled the automation of numerous manufacturing processes, the discovery and exploitation of vast new energy resources, and the launch and sustained growth of entirely new industries, including cellphones, personal electronics and the Internet. Yet while renewable energy holds great potential for reducing our emissions and our unhealthy reliance on imported oil, it cannot offer the kind of productivity revolution that IT delivered.

Start with the fact that most forms of alternative energy are still uneconomical without government incentives or mandates. If you doubt that, recall that new US installations of wind power, which is generally regarded as the most cost-competitive of the newer alternative energy technologies, were on the verge of grinding to a halt when it appeared that the Production Tax Credit might not be renewed at the end of 2008, and again when the markets for translating those tax credits on future earnings into current cash froze up earlier this year. The wind sector only revived when the government provided a substitute Investment Tax Credit and made it available in the form of direct grants from the Treasury.

Now, there's a strong argument that these incentives are necessary to compensate for the inherent advantages of fossil fuel-based power generation that doesn't pay for the environmental externalities it creates. However, that doesn't alter the fact that the expansion of this industry is not being driven by the underlying wealth-creating force of productivity improvements, but by government funding and regulations. Thus much of the growth of the alternative energy sector comes at the expense of other parts of the economy, or of larger deficits that impair the long-term health of the economy. That might be necessary, but it won't create vast new wealth in the way that IT did.

In fact, as long as wind, solar and other forms of renewable energy require government support or mandates such as Renewable Portfolio Standards to keep them growing, they will tend to reduce the overall productivity of the economy by embedding higher energy costs into everything we do, whether those costs are reflected directly in higher energy prices or indirectly in higher taxes or bigger deficits. Meanwhile, less glamorous technologies associated with energy efficiency offer genuine productivity improvements today and well into the future, though probably still on a smaller scale than those wrought by IT, since energy accounts for only about 8% of GDP. I'd put the electrification of transportation into this efficiency category, too, once the cost and capability of batteries improve enough to make them attractive without massive subsidies.

Renewable energy looks likely to continue its impressive growth, building new companies and making fortunes for some entrepreneurs. It has great potential to contribute an important share of our future energy mix. Unlike IT, however, this transformation will largely be limited to the energy sector, with relatively little impact beyond it. Devices that consume electricity won't run any better on green electrons than on any other kind, and engines won't suddenly begin performing at higher levels on renewable fuels--in fact, the opposite is often the case. So rather than sugar-coating the green energy proposition with inflated claims that are likely to lead to disappointment later, a dose of stoicism seems to be in order, here. If accelerating the growth of renewable energy is the right thing to do for the planet and for our energy security, and if its long-term benefits outweigh the costs, we should dispense with the hype suggesting it will make us all rich and just get on with it.

Thursday, October 09, 2008

All Those Green Jobs

A full-page ad appearing in today's New York Times, Wall Street Journal, and Washington Post reminded me of a topic I've meant to cover for some time. Frequently during this election campaign, including the primaries, we have heard candidates extol the employment benefits of a switch to renewable energy. In Tuesday night's debate, Senator Obama suggested a figure of "5 million new jobs" from clean energy, and Senator McCain also mentioned "millions of jobs" in this context. It sounds alluring. A rapidly-growing energy sector providing good jobs here in the US is just what the economy could use at the moment. But while recognizing the potential benefits, we should also examine these claims critically. What would 5 million green energy jobs imply about future US energy costs and competitiveness?

The ad in today's papers is entitled, "The Unshaken Pillar", and it describes the US energy sector as a solid foundation for the whole economy at a time of great uncertainty, emphasizing the need for improved energy efficiency and conservation, along with expanded production of both oil & gas and alternatives. Signed by the CEOs of Chevron, AEP, FedEx, and Dow Chemical, it cites employment as an example of the domestic energy industry's benefits. This suggests a basis for putting those hypothetical 5 million green jobs into perspective. As of last year, the US oil and gas industry employed 1,772,000 workers in all categories, spanning exploration & production, refining, transportation and distribution. Nor are they all engineers and highly-paid drilling specialists. Nearly half this figure was associated with employment in service stations. Collectively, these 1.8 million people produced, processed and delivered fuels carrying 33 quadrillion BTUs of energy, or "quads", to US consumers and businesses. That's a third of total US energy consumption and 46% of US energy production. On average, it equates to 18.6 billion BTUs per worker, or 3,100 barrels of oil equivalent each, annually.

In order to come up with a comparable productivity metric for renewable energy, we need to make some assumptions about how much this sector will produce when it reaches its anticipated employment of 5 million Americans. It must be a lot more than the 1% or so of electricity and 7% of gasoline currently supplied by wind, solar power and ethanol. If we combine the 36 billion gallons per year of biofuel targeted for 2022 under the federally-mandated Renewable Fuel Standard with the 20% of net electricity generation from wind by 2030 posited by a recent DOE study, as a proxy for all new renewable electricity, the total equates to roughly 14 quads per year. And that's giving the kilowatt-hours from renewable electricity the benefit of a gas-fired turbine heat rate, rather than the normal engineering conversion, which is 2/3 lower. The resulting productivity figure works out to 2.8 billion BTUs per green energy worker, or 470 barrels of oil equivalent per year.

On that basis, we should expect that the average energy productivity of this huge new renewable energy sector would only be about 15% of the productivity of the current oil and gas industry. To understand the implications of that for the economy and for US international competitiveness, we must translate these figures into dollars. If the average "green-collar" job envisioned by those emphasizing the employment benefits of renewable energy pays the current average US wage of $47,000 per year, then the result is an effective energy cost of $100 per barrel, before considering capital expenses--and renewable energy is still at least as capital-intensive as conventional energy. Using the above figures, the comparable calculated labor expense for oil & gas is around $15 per barrel.

There are many good reasons for the US to pursue renewable and other alternative energy technologies aggressively, including addressing climate change, improving our energy security, and reducing the influence of petro-authoritarian states. Adding good jobs would belong on this list, too, as long as we keep our eye on productivity. In order to remain competitive, we shouldn't desire the largest energy sector possible, but rather the smallest one that does the job of providing the clean energy needed by the rest of the economy, where the vast majority of the goods and services we consume are created. With that in mind, let's all hope that the 5 million green jobs we keep hearing about are merely another example of election-year pie-in-the-sky, and not a realistic estimate.