Tag Archives: greenhouse gases

A counter to UC’s skepticism about CCAs


Kevin Novan from UC Davis wrote an article in the University of California Giannini Foundation’s Agriculture and Resource Economics Update entitled “Should Communities Get into the Power Marketing Business?” Novan was skeptical of the gains from community choice aggregation (CCA), concluding that continued centrally planned procurement was preferable. Other UC-affiliated energy economists have also expressed skepticism, including Catherine Wolfram, Severin Borenstein, and Maximilian Auffhammer.

At the heart of this issue is the question of whether the gains of “perfect” coordination outweigh the losses from rent-seeking and increased risks from centralized decision making. I don’t consider myself an Austrian economist, but I’m becoming a fan of the principle that the overall outcomes of many decentralized decisions is likely to be better than a single “all eggs in one basket” decision. We pretend that the “central” planner is somehow omniscient and prudently minimizes risks. But after three decades of regulatory practice, I see that the regulators are not particularly competent at choosing the best course of action and have difficulty understanding key concepts in risk mitigation.By distributing decision making, we better capture a range of risk tolerances and bring more information to the market place. There are further social gains from dispersed political decision making that brings accountability much closer to home and increases transparency. Of course, there’s a limit on how far decentralization should go–each household can’t effectively negotiate separate power contracts. But we gain much more information by adding a number of generation service providers or “load serving entities” (LSE) to the market.

I found several shortcomings with with Novan’s article that would change the tenor. I take each in turn:

  • He wrote “it remains to be seen whether local governments will make prudent decisions…” However, he did not provide the background which explains at least in part why the CCAs have arisen in the first place. Largely over the last 40 years, the utilities have made imprudent procurement and planning decisions. Whether those have been pushed on the utilities by the CPUC and Legislature or whether the IOUs have some responsibility, the fact is that neither institution sees real consequences for these decisions, neither financially or politically. In fact, the one time that a CPUC commissioner attempted to deliver consequences to the IOUs, she was fired and replaced by a former utility CEO. The appropriate comparison for local government decision making is to the current baseline record, not an academic hypothetical that will never exist. And by the way, government enterprise agencies, including municipal utilities, have a relatively good record as demonstrated as by lower electricity rates and relatively well managed, almost invisible capital intensive water and sanitation utilities. The current CCAs have a more extensive portfolio risk management system than PG&E—my calculation of PG&E’s implicit risk hedge in its renewables portfolio is an astounding 3.3 cents per kilowatt-hour.
  • Novan complains that CCAs have “dual objectives.” In fact they have “triple objectives,” the added one to encourage local economic development (sometimes through lower rates). I suggest reading the mission statements of the CCAs that have been created, including the local Valley Clean Energy Authority .
  • It’s not clear that “purchasing locally produced renewable energy will likely lead to more expensive renewable output” for at least two reasons. The first is that local power can avoid further transmission investment. The current CAISO transmission access charges range from $11 to $39 per megawatt-hour and is forecasted to continue to rise significantly (indicating transmission marginal costs are much above average costs). In a commentary on a UC Energy Institute blog, it was revealed that the Sunrise line may have cost as much as $80 per MWH for power from the desert. This wipes out much of the difference between utility scale and DG solar power. Building locally avoids yet more expensive transmission investment to the southeast desert. [I worked on the DRECP for the CEC.] In addition, local power can avoid distribution investment and will be reflected in the IOU’s distribution resource plans (DRP). And second, the scale economies for solar PV plants largely disappears after about 10 MW. So larger plants don’t necessarily mean cheaper, (especially if they have to implement more extensive environmental mitigation.) [I prepared the Cost of Generation model and report for the CEC from 2001-2013.]
  • It’s not necessary that more renewable capacity is needed for local generation. The average line losses in the CAISO system are about 6%, and those are greater from the far desert region. Whether increased productivity overcomes that difference is an empirical question that I haven’t seen answered satisfactorily yet.
  • Novan left unstated his premise defining “greener” renewables, but I presume that it’s based almost entirely on GHG emissions. However, local power is likely “greener” because it avoids other environmental impacts as well. Local renewables are much more likely to be built on brownfields and even rooftops so there’s not added footprints. In contrast there is growing opposition to new plants in the desert region. The second advantage is the avoidance of added transmission corridors. One only needs to look at the Sunrise and Tehachipi lines to see how those consequences can slow down the process. Local DG can avoid distribution investment that has consequences as well. Further, local power provides local system support that can displace local natural gas generation. In fact, one of the key issues for Southern California is the need to maintain in-basin generation to support imports of renewables across the LA Basin interface. [I assessed the need for local generation in the LA Basin in the face of various environmental regulations for the CEC.]

I was on the City of Davis Community Choice Energy Advisory Committee, and I am testifying on behalf of the California CCAs on the setting of the PCIA in several dockets. I have a Ph.D. from Berkeley’s ARE program and have worked on energy, environmental and water issues for about 30 years.






CCAs add renewables while utilities stand pat


California’s community choice aggegrators (CCAs) are on track to meet their state-mandated renewable portfolio standard obligations. PG&E, SCE and SDG&E have not signed significant new renewable power capacity since 2015, while CCAs have been building new projects. To achieve zero carbon electricity by 2050 will require aggressive plans to procure new renewables soon.

Why the CPUC has it wrong on the PCIA

Nick Chaset is the CEO of East Bay Community Energy which is a community choice aggregator (CCA) that serves Alameda County. He also was Commission President Michael Picker’s chief advisor until last year when he left for EBCE. He explains in this article how two proposed decisions that the CPUC is considering are fundamentally wrong and will shift cost onto CCA customers. (I testified on behalf of CalCCA in this proceeding. I’ll have more on this before the Commission’s scheduled vote October 11.)

Figure 1 – CPUC’s Proposed Resource Adequacy Value vs. True Market Values


Figure 2 – GHG Premium Value Missing from CPUC Proposed Decision


Figure 3 – Falling Utility Rates as Customers Depart Filed in Their ERRA Rate Applications



MIT tries to resurrect nuclear power


I received a notice of a new MIT study entitled “The Future of Nuclear Energy in a Carbon-Constrained World” which looks at the technological, regulatory and economic changes required to make nuclear power viable again. A summary states

The findings are that new policy models and cost-cutting technologies would help nuclear play vital role in climate solutions. Progress in reducing carbon emissions requires a broad range of actions to effectively leverage nuclear energy.

However, nothing in the summary reveals the paradigm-shattering innovation that will be required to make nuclear power competitive with a diverse fleet of renewables plus storage that would achieve the same goals. The cost of a solar plant plus storage with today’s technology still costs less than a current technology nuclear plant. That alternative fleet would also provide better reliability by diversifying the generation sources through smaller plants and avoid any radiation contamination risk.

The nuclear industry must clearly demonstrate that it can get past the many hurdles that led to the recent cancellation of two projects in the southeast U.S. Reviving nuclear power will require more than fantasies about what might be.

Views on a sustainable Davis


Two board member of the Valley Climate Action Center, Gerry Braun and Richard Bourne wrote two articles on making building energy use in Davis sustainable and resilient. VCAC board members, including myself, had input into these articles. They reflect a vision of getting to a zero-net carbon (ZNC) footprint while being economically viable. Both were published in the Davis Enterprise.

Paying off coal miners to improve the environment


Finally, a real world example of how benefit-cost analysis should be used in practice. Alberta takes the revenues that represent a portion of the society wide benefits and distributes those to the losers from the policy change. Economists have almost always ignored the problem of how to compensate losers in changes in social policy, and of course those who keep losing increasingly oppose any more policies. Instead of dreaming up ways to invest carbon market revenues in whiz bang solutions, we first need to focus on who’s being left behind so they are not resentful, and become a key political impediment to doing the right thing.

Trivializing the risks of climate change

Blank spread

The Guardian

I follow Matthew Kahn’s, USC economics chair, blog posts. He expresses a libertarian view. He also writes about climate adaptation. He makes an important point that civilization is not static and we will be able to adapt the human ecology to a range of climate change. But his latest post on how climate change might affect marathon performances raised an important issue for me.

Kahn fails to acknowledge that adaptation to small, incremental climate change is not the concern. It’s the large, catastrophic changes with unknown (and unknowable) probability–deep uncertainty–that is of concern–collapsing ice sheets or ecosystems. He is not addressing the problem of what happens if the climate passes a tipping point. These types of articles and blog posts produced by Kahn and his colleagues trivialize the real risks and consequences, as though we’re just trying to adapt to a change in the weather while ignoring the potential systemic changes.