Tag Archives: energy

We Are Your Eyes on Xcel

Update 9/16: SAVE THE DATE 11-20-14! The Public Utilities Commission (“COPUC”) has set a public hearing for November 20, 2014. Clean Energy Action will be training folks on how to engage prior to that date.

Update 8/28: Clean Energy Action has been granted permissive intervention! We are the only party to have ever been granted intervention status with an express position of moving toward a zero carbon economy. As a party to this proceeding, we will now be able to develop a Statement of Position preceded by filing Discovery Questions, Answer Testimony and informing the public about the intricacies of the proceeding. Stay Tuned here for further updates.

Update 8/5: Clean Energy Action has filed a Motion Requesting Permissive Intervention in the rate case. We expressed our reasons for filing as mitigating climate change and rapidly moving to a zero carbon economy.

Update 7/9: Public Utilities Commission staff filed a request for a hearing on June 26th. The Commissioners granted that request today. Any petitions to intervene must be submitted by August 11th.  The hearing is set for December 2nd through December 5th, with a final ruling expected by February 13th, 2015.

On June 17th, Xcel Energy submitted a request to the Public Utilities Commission asking for a rate increase of $157 million annual increase. That could mean a 5.3% monthly increase for the average consumer.

Unlike almost everybody on earth, we are keeping an eye on Xcel and the PUC.  Xcel’s testimony alone is over 2,241 pages.  Believe it or not, those 2,241 pages are just the tip of the iceberg. Clean Energy Action is digging deeper to uncover the implications that this rate case could have on the deployment of energy efficiency and renewable energy.

We need your support to keep doing this work.

If Xcel wins, this would add $3.96 to every customer’s bill every month. Instead of paying that to Xcel, consider a monthly recurring donation to help us move them into the utility model of the 21st century.

Xcel is proposing some significant changes to their rate structure, including a proposal for decoupling, large capital investments from the Clean Air Clean Jobs Act, and restructuring the depreciation of their fossil fuel assets.

We cannot change the conversation about the future without your support.


Facing the Risk in Fossil Fueled Electricity

I recently wrote about how our risk tolerance/aversion powerfully affects our estimation of the social cost of carbon, but obviously that’s not the only place that risk shows up in our energy systems.  Fossil fuel based electricity is also exposed to a much more prosaic kind of risk: the possibility that fuel prices will increase over time.

Building a new coal or gas plant is a wager that fuel will continue to be available at a reasonable price over the lifetime of the plant, a lifetime measured in decades.  Unfortunately, nobody has a particularly good record with long term energy system predictions so this is a fairly risky bet, unless you can get somebody to sign a long term fuel contract with a known price.  That doesn’t really get rid of the risk, it just shifts it onto your fuel supplier.  They take on the risk that they won’t make as much money as they could have, if they’d been able to sell the fuel at (higher) market rates.  If the consumer is worried about rising prices, and the producer is worried about falling prices, then sometimes this can be a mutually beneficial arrangement.  This is called “hedging”.

Continue reading Facing the Risk in Fossil Fueled Electricity

The Myth of Price

Our society’s prevailing economic zeitgeist assumes that everything has a price, and that both costs and prices can be objectively calculated, or at least agreed upon by parties involved in the transaction.  There are some big problems with this proposition.

Externalized costs are involuntary transactions — those on the receiving end of the externalities have not agreed to the deal.  Putting a price on carbon can theoretically remedy this failure in the context of climate change.  In practice it’s much more complicated, because our energy markets are not particularly efficient (as we pointed out in our Colorado carbon fee proposal, and as the ACEEE has documented well), and because there are many subsidies (some explicit, others structural) that confound the integration of externalized costs into our energy prices.

The global pricing of energy and climate externalities is obviously a huge challenge that we need to address, and despite our ongoing failure to reduce emissions, there’s been a pretty robust discussion about externalities.  As our understanding of climate change and its potentially catastrophic economic consequences have matured, our estimates of these costs have been revised, usually upwards.  We acknowledge the fact that these costs exist, even if we’re politically unwilling to do much about them.

Unfortunately — and surprisingly to most people — it turns out that understanding how the climate is going to change and what the economic impacts of those changes will be is not enough information to calculate the social cost of carbon. Continue reading The Myth of Price

In Good Company: A Look at Global Coal Reserve Revisions

In my last post, I recounted some of the indications that have surfaced over the last decade that US coal reserves might not be as large as we think.  The work done by the USGS assessing our reserves, and more recently comments from the coal industry themselves cast doubt on the common refrain that the US is “the Saudi Arabia of coal” and the idea that we have a couple of centuries worth of the fuel just laying around, waiting to be burned.  As it turns out, the US isn’t alone in having potentially unreliable reserve numbers.  Over the decades, many other major coal producing nations have also dramatically revised their reserve estimates.

Internationally the main reserve compilations are done by the UN’s World Energy Council (WEC) and to some degree also the German equivalent of the USGS, known as the BGR. Virtually all global (publicly viewable) statistics on fossil fuel reserves are traceable back to one of those two agencies. For instance, the coal reserve numbers in the International Energy Agency’s (IEA’s) 2011 World Energy Outlook came from the BGR; the numbers in BP’s most recent Statistical Review of Energy came from the WEC.

Of course, both the WEC and the BGR are largely dependent on numbers reported by national agencies (like the USGS, the EIA and the SEC in the case of the US), who compile data directly from state and regional geologic survey and mining agencies, fossil fuel consumers, producers, and the markets that they make up.

Looking back through the years at internationally reported coal reserve numbers, it’s surprisingly common to see big discontinuous revisions.  Below are a few examples from the WEC Resource Surveys going back to 1950, including some of the world’s largest supposed coal reserve holders.  In all cases, the magnitude of the large reserve revisions is much greater than annual coal production can explain.

Continue reading In Good Company: A Look at Global Coal Reserve Revisions

Sustainability by the Numb3rs: The Scale of Global Energy Systems

The Scale of Our Energy & Power Systems

April, 24th, 5:30 pm – 7:00 pm
Fuse @ The Riverside
1724 Broadway St, Boulder, CO 80302

Register Here

This is the second in a series of classes hosted by Clean Energy Action and Boulder Free School.  Find out more on the main course index page.

Class Outline:

In this class we will revisit the relationship between energy — which is a quantity of work (measured in Joules, or perhaps more familiarly on your electricity bill, in kilowatt hours) — and power, which is a rate of energy usage or flow (measured in Watts).  We’ll look at the power density of various renewable energy sources — especially solar — and see when and where that becomes an important constraint.  We’ll try and get a sense of the scale of our global energy system, where the energy comes from today, what it goes to, and where we might be able to get it from in a zero carbon future.  We will also talk about the difference between electricity and energy, which are often and mistakenly conflated.

Today it takes about 15 Terawatts (1.5 x 1013 Watts) of power to run human civilization.  On average, that’s about 2 kW (2,000 Watts) per human being, but energy use is not evenly distributed.  North Americans on average use more like 10 kW (10,000 Watts — equivalent to having about 100 human energy slaves working tirelessly for you day and night), while Bangladesh clocks in at less than 300 W per capita.  If everyone were to aspire to the North American way of life, we would need to increase global energy production by about a factor of 6 or 7, to something like ~100 Terawatts (1 x 1014 W).  What would it take to do that?  Is it practical for Colorado?  For the US?  For the UK?  For Bangladesh?


Watch a 90 minute long talk (60 minutes of talk + 30 minutes of Q&A) by MacArthur fellow Saul Griffith on energy and climate.  You must join the Google Group for this course, so we can give you a private link, because this talk is not publicly available in its entirety.

Read Chapter 2 (The Balance Sheet) and Chapter 6 (Solar) in part one of Sustainable Energy Without the Hot Air (download the full PDF of the book).  This is 14 pages of reading.

Look up information about two large (utility scale) solar power facilities.  One of them should be in Germany, and the other should be in a sunny place — Southern California, Spain, Australia, etc. For both facilities, find:

  1. The total land area of the facility.  This will probably be measured in acres or km2.
  2. The total annual energy produced by the facility.  For electricity, this is usually reported in Watt-hours, probably Megawatt hours (MWh) or Gigawatt hours (GWh).
  3. The nameplate capacity of the facility — this will be measured in Watts — probably Megawatts (MW).

Background Resources

If you still feel uncomfortable with the basic mechanics of and motivations behind doing order of magnitude calculations, go check out the resources from our first class.  We’ll also try and make sure that every class starts with an easy warm-up calculation to give everyone a chance to get comfortable.

Teacher Bio

Once upon a time at NASA, Zane got a PhD studying the climate history of Mars, and the geology of the icy moons of Jupiter and Saturn.  Now he’s Clean Energy Action’s director of Research and Policy, working on climate and energy policy, and trying desperately to get everyone to turn off the terraforming machines before it is too late.  Zane also works on sustainable transportation, land-use, and community housing in Boulder.  He lives in a co-op with 11 other people, and his two bicycles and zero cars.