Archive for May 20th, 2009

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Flywheel technology now ready for takeoff? NYISO tariff changes accomodate energy storage technology

May 20, 2009

Michael Giberson

The Federal Energy Regulatory Commission has approved NYISO tariff changes intended to accommodate participation of flywheel and similar energy storage devices in markets to supply frequency regulation services.  Flywheel developer Beacon Power applauded the change.

The FERC order, linked above, describes a number of changes to the NYISO tariff and operating procedures needed for flywheel technology to work economically in the ISO’s markets. Interestingly, some of the changes reflect ways in which flywheel-based services are superior to traditional generator-based provision of frequency regulation service (much faster response, much more finely controlable), some of the changes reflect limitations in flywheel capabilities relative to other suppliers (resources under consideration could sustain service for only 15 minutes), and some of the changes just reflect ways in which flywheels are different (operators want to bid in the regulation market without also bidding in the energy supply market).

In the NYISO, much of the frequency regulation services needed have been provided by hydro units, but some of it is provided by thermal generating units. The rapid small ups-and-downs in generator output necessary to supply frequency regulation from thermal units typically cause the units to use more fuel and emit more pollutants than otherwise. The addition of flywheel technologies to the mix should lead to a small environmental benefit, too, in addition to reducing the overall costs of frequency regulation.

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Consequences of dynamic transmission line rating for renewable power

May 20, 2009

Michael Giberson

I think the implication of this article are good for wind power, but not as good for solar power.

Some of the discussion borders on being over my head, but the main point is that many transmission line capability ratings are static while the actual transmission line capability is dynamic. Dynamic line ratings – ratings which reflect current weather data – can increase the amount of power that can be reliably carried on existing transmission infrastructure.

Generally speaking a transmission line’s carrying capability is limited by the danger of overheating. To be safe, transmission operators will compute a rating for a line under possible adverse conditions.  A line is more likely to overheat during hotter, calmer times and less likely to overheat at colder, windier times, so transmission operators will base ratings on assumptions of high temperature and low wind. The result is that transmission line limits are probably too conservative most of the time.

The consequences for wind power and solar power generation are fairly obvious: Wind power output is higher when it is windy, and so is transmission capability, so use of dynamic line ratings would ease transmission constraints associated with large wind power output.  Wind power also tends to be higher at night and during cooler periods of the year, so again dynamic line rates would allow more transmission capacity to be used. (This approach is already in use in a few places.)  Solar power output, on the other hand, tends to be higher during hotter times of day, when transmission capability is lower. Still, it is likely that dynamic line ratings would benefit solar too, since most of the time transmission lines limits are likely too conservative.

I should also point out that dynamic line ratings should be good for consumers, too, since the more efficient use of transmission capability reduces congestion, meaning it is easier for consumers to reach any available low cost power on the system.

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Origins of state electric utility regulation: Was it protection of quasi-rents not creation of monopoly rents?

May 20, 2009

Michael Giberson

There is by now a fairly established body of economic history work that challenges what might be called the mainstream view of the origins of state regulation of electric utilities and offers as an alternative a nakedly public choice view that state regulation was all about creation of monopoly rents. The mainstream view asserts that electric utilities were natural monopolies – therefore competition was wasteful – and state-level rate regulation was desirable to limit the economic harms that would otherwise accompany monopolization.

A contrary view drawing on public choice and new institutional economics asserts that state utility regulation was a special interest effort in the creation of monopoly rents. This line of thinking may start with Stigler and Friedlander and Demsetz and culminate in the work of Jarrell, who found that the advent of regulation in states was associated with higher electric power prices and slower growth compared to the periods before state regulation. A central implication of this line of work is that state regulation is a negative-sum game in which powerful concentrated interests are able to capture political benefits through regulatory processes at the expense of dispersed, unorganized consumer interests.

In the December 2008 Journal of Economic History, John Neufeld presents an alternative explanation for the emergence of state regulation, which also draws on insights from public choice and new institutional economics. A key point of his article is that state regulation can be seen as a positive sum activity instead of a purely negative-sum rent-seeking exercise. (You might say that the earlier line of thinking emphasizes public choice concerns, while Neufeld’s alternative emphasizes new institutional issues.) In the abstract for “Corruption, Quasi-Rents, and the Regulation of Electric Utilities,” he says:

Was the adoption of state utility regulation the result of a negative-sum competition among special interest groups vying for the monopoly rents created by regulation or a positive-sum elimination of corruption arising from appropriable quasi-rents? Previous empirical studies of the adoption of regulation have assumed the former. Using discrete hazard analysis, this study considers the latter and finds the data more consistent with the positive-sum protection of quasi-rents than the negative-sum creation and appropriation of monopoly rents.

In Neufeld’s telling, the problem with municipal franchising with private utilities – the dominant practice prior to state utility regulation – was that post-contractual investments by the utility created appropriable quasi-rents, and it was difficult to prevent the municipality from reneging on contractual commitments in pursuit of those rents. In this environment, utilities preferred the relatively stability promised by state regulation.

I like Neufeld’s view, but it doesn’t seem to address one very important issue: Why did state regulation seem to necessarily entail imposition of a state-enforced monopoly? Couldn’t the state offer effective protection from municipal predation to competing electric utilities? Also, what features of state-level regulation protected utilities from state government appropriation of the quasi-rents?

Maybe Neufeld addressed these points and I just missed them.* In any case, he presents a good case for considering the role of appropriable quasi-rents in the story of electric utility regulation.

CITATION: John L. Neufeld (2008). Corruption, Quasi-Rents, and the Regulation of Electric Utilities. The Journal of Economic History, 68, pp 1059-1097. doi:10.1017/S0022050708000818

*I don’t have an electronic version of the document handy for reference, the article is only available online to subscribers. I’m working from memory from yesterday’s trip to the library. (Yes, I actually had to bike over to the library to read a journal article! It felt so old fashioned.)

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Independence Pass!

May 20, 2009

Lynne Kiesling

I’ve been out in Colorado since Friday teaching at this year’s Institute for Regulatory Law & Economics annual workshop for state regulators. Yesterday we had a free afternoon and today we wrap up and travel home, so my post for the day is this picture from yesterday’s free afternoon: three of us rode from Aspen up to the top of Independence Pass. 20.5 miles out and up, a 4000-foot elevation gain … and 2000 of those feet of elevation gain come in the last two miles before the summit. Ouch!

It was breathtaking in many ways — lack of oxygen at 12,000 feet, gorgeous scenery, riding on a road that’s little more than a paved mountain goat trail clinging to the side of a mountain in some places — and it was a good challenge and good fun. I wouldn’t have stuck with it without my riding buddies Ray and Brian, so thanks to them I got to have this spectacular experience!

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