Monday, August 13, 2012
Controversial Carbon Offsets
I love this article because it reveals the unenvironmental paradoxes and "green" efforts like carbon offset programs. Carbon markets are complicated and when ill-designed or "gamed" in some sort, they fall apart from their original intent to clean up the environment. As David Doniger of the NRDC said in the story, "It turned the economics of business on its head."
Tuesday, May 22, 2012
Greenhouse gases from Refrigerants
Refrigerants sound exactly how the terms sounds. They are coolants typically used to in ACs. They are ozone-depleting substances if they are released to the environment. Depleting the ozone layer allows more heat to enter our atmosphere and warm the Earth. Their global warming potential, a factor that signifies their impact to global warming, is a range from hundreds to 11,000. This means if carbon dioxide is a factor of 1 in terms of its impact to global warming, refrigerants (commonly known as HFCs and PFCs or CFCs) are upwards of 11,000 times stronger or worse for global warming. Today, I had a talk with my boss and my non-engineer background came out. I made a blooper in talking about refrigerants. I thought the amount of greenhouses from refrigerants came from our refrigerators not our ACs. I thought ACs have a greenhouse gas footprint primarily due to energy use. Cooling mechanisms in soda machines to ACs use refrigerants. Your car AC does as well. They are not dangerous to you, only dangerous to global warming if released.
What are the common uses of refrigerants? In a car, refrigerants are in your car AC. Air has to blow against the refrigerant, gets cooled, and then gets circulated. Sources through wikipedia suggest that by 1992, it was illegal to release refrigerants in to atmosphere. No taking a halon, which is like a fire extinguisher, and just releasing it. EPA also has a wealth of information: http://www.epa.gov/ozone/title6/608/index.html
Here's what a refrigerant looks like: picture
So why care? If you are doing greenhouse gas foot printing like me, why care? Well, it's nice not to walk up to a soda vending machine and not be ignorant that there could be a huge greenhouse gas source in there. Given that the most impactful refrigerants are now illegal, but the public talks carbon dioxide these days because it is so common. We forget about those less commonly heard greenhouse gases are far more powerful and right in our backdoor in our car AC.
Sunday, December 25, 2011
Mercury and Air Toxics Standard (MATS) rule
- Rule applies to boilers that burn more than 10% of their fuel in fossil fuels over 3 years or 15% in one year after 2015
- Changes for oil units- I'm trying to understand the changes. A limited use category exempts any boilers with annual capacity factors less than 8%. How is the 8% calculated? Using the fuel heat input for just oil and using a 24 month average after
- Work practice standards such as tune-ups every 3 years or 4 years for neural network adjustments instead of emission testing
- Just test moisture content to ensure comply with HCL and HF for existing oil unit
- On p4 of the memo, EPA mentions that companies will begin planning early if there are reliability issues and thinks companies will notify their "reliability entities" if there are issues. Then on Pg 5, EPA mentions specific steps such as notifying EPA's Enforcement office within a year of the rule's publication (likely late Feb to early Mar 2012) of the dates when companies plan to shut plants down or control. This signals the timing of potential reliability concerns. After writing all this, I realize that my question may not be a question but a thought. Do companies have to submit a separate request to the "reliability entities" or does EPA just assume companies will already do this so they don't give specific criteria. In part D on page 6 of the memo, EPA specifies that companies need to get validation from the "reliability entities" confirming that there is, in fact, a reliability concern, but there are no specifics on how companies should work with their reliability entities. At least, this is my interpretation.
Friday, November 11, 2011
California Valley Solar Ranch
Sunday, August 14, 2011
Environmental Journalism opportunities
Wednesday, April 20, 2011
RES vs RPS
One of the topics I've had to follow is climate change regulations. Since Congress has dropped the topic of climate policy--well, they have not dropped but it certainly has fallen lower on the ladder after the 2011 fiscal budget--states such as California have had to move ahead with their own programs. Last week, California signed into law a billed called SB1x2 (Senate Bill 2x) which extends their state renewable portfolio standard (RPS). An RPS is a states requirement to have a portion of their state's electricity come from renewable sources by a certain year. California, under Gov. Schwarzenegger, already implemented a 20% RPS by 2010. The most recent CPUC report mentions they achieved about 17-18%. SB1x2 gives the state the ability to extend this RPS in years come to achieve 33% renewable energy by 2020. On September 23, 2010, the California EPA also passed an RES (renewable energy standard) to achieve 33% by 2020. What is the difference between the RES vs RPS?
Does the difference have to deal with who has authority to regulate the rule? The PUC (public utility commission) overseas the achievement and the progress of the RPS. CA EPA (California Air Resources Board) has the authority to implement the RES (see CARB's RES website). It was a directive under Governor Schwarzenegger's Executive Order S-14-08 to establish a 33% renewable energy target by 2020. Now that it's a new Democratic administration under Governor Brown, is this Executive Order moot?
According to the PUC's June 2009 report, the RPS is a legislative action, meaning it is a different agency under the CA government that oversees the RPS. It's the CA Congress vs. ARB (CA EPA) that implements the RES. A summary explains that the RES is independent from the RPS. The "RES also applies to a broader range of regulated entities than the RPS such as the Publically Owned Utilities." In reading this summary, I would like to highlight the differences:
- Applicability- "Senate Bill 2X applies to all electricity retailers in the state – investor-owned utilities (IOUs), municipal utilities, and independent sellers. The current 20% standard applies only to investor-owned utilities and independent sellers." (Simitian website). It makes sense that the PUC would oversee the RPS if only IOUs are regulated. THis begs the question, what is the difference amount POUs, IOUs, and municipal utilities? I know IOUs are the big regulated utilities like SDGE, PG&E, and SCE. POUs are like LADWP. "The PUC would handle oversight of the state's investor-owned utilities, with the air board retaining the authority (under the state's climate change law) to loosely oversee and, if need be, punish public utilities" (E&E)
- Coverage-The RES and RPS also differ in terms of coverage. The RPS looks at the state and how much of the state shoudl come from renewables, but it also dicates the IOUs to set targes to achieve the renewable objective. The RES regulates all utilities.
- Treatment of in-state vs out-of-state electricity- "RES Allows Unlimited Unbundled/Tradable RECs. The RES allows an unlimited use of “unbundled” or “tradable” RECs (TRECs) for compliance purposes. In contrast, the CPUC has limited the use of TRECs under the RPS, at least temporarily. TRECs allow the environmental benefits associated with renewable electricity to be sold or traded separately from the underlying electricity." (Summary). The PUC limited the use of TRECs, I assume, because they wanted to ensure that a certain % of in-state generation came from renewables. I don't remember the exact % but a large portion of CA's energy comes from out-of-state cheap coal. So the RES increased the flexiblity to use TRECs to comply and unbundled RECs, which means that you can use credits to comply. A credit can equal to 1KW of renewable energy that could ahve been produced outside CA. You are using out-of-state renewable power to comply with a state requirement.
- Means to comply- "Senate Bill 2X does not require utilities to reach the goal at any cost. The PUC must approve renewable energy contracts, and utilities may be granted exemptions if the price of energy, or the difficulty of moving it into the state’s grid, make the cost excessive" (Simitian website)
- Statute vs Regulation- "Unlike the RPS, which is a codified statute, the RES remains a CARB regulation. A new Governor could order CARB to revise the RES, similar to Governor Schwarzenegger’s Executive Order S-21-09, which prompted the RES in the first instance." (Latham and Watkins summary)
- Targets- "Under the new law, all load-serving entities need to satisfy a 20% by December 31, 2013, renewable procurement target, a 25% target by year-end 2016, and a 33% target by December 31, 2020." (platts)
| Year | Renewable Electricity Standard3 | SB 1x2 |
| 2012 through 2014 | 20 percent | 20% by 12/31/2013 |
| 2015 through 2017 | 24 percent | 25% by 12/31/2016 |
| 2018 through 2019 | 28 percent | n/a |
| 2020 and annuallythereafter | 33 percent | 33% by 12/31/2020 |
Helpful websites:
RPS update
http://www.dsireusa.org/incentives/incentive.cfm?Incentive_Code=CA25R
LTPP http://www.cpuc.ca.gov/PUC/energy/Procurement/LTPP/ltpp_history.htm
Sunday, March 20, 2011
Nuclear in the US
Sunday, October 17, 2010
Manchin's Dead Aim
In the ad, he shoots a hardcopy of a proposed cap and trade bill with a rifle. Ok, so cap and trade is bad for West Virginia, but what does such an action reflect on us as a nation? Does literally shooting a bill connote any sign of progress? No, it gives the impression of killing a bill, killing change. If the U.S. is ever going to have a climate change policy, it won't happen any time soon if states just kill the bill. West Virginia, and states alike, ought to promote a bill that could work for their states, not just shoot down any bill.
Don't get me wrong. I don't know the entire story. West VA is a coal state, much like Indiana, Ohio, Wyoming, and Colorado. They may or may not support the idea that climate change is real. They may or may not see climate change policy as necessary. It may just be another tax in a recession environment. Nevertheless, what kind of campaign ad is this? I'm disgraced that these kinds of ads actually appeal to voters, but I'm biased as a NJ resident. I suppose the animal rights activists get the same feeling by seeing politicians appeal to other voters who are hunters.
Let me clarify that I don't intend to suggest that West VA change it's beliefs. If they are against climate change policy, so be it. The U.S. has 50 states, all entitied to their own beliefs. I don't believe shooting a climate change bill and airing this on public television is the right direction. If we replace climate change policy with any other policy against West Virigina, do they all deserve to be shot and killed? I would have preferred him to say, "we will fight to make this bill right for our state," or show an image of the Senate debating the issue. Senator Manchin (D) shooting a rifle at a cap and trade bill reminds me of the lack of progress in the U.S. on climate change policy.
Thursday, April 1, 2010
Today, the EPA and DOT (Dept of Transportation) passed the first federal greenhouse gas regulations. You may ask, why is this significant. Ray Lahood, head of the DOT, and EPA Administrator Lisa Jackson set up standards for motor vehicles, including an average fuel economy of 35mpg by 2016. My 2010 Carolla LE averages 34. Will it still last by 2016?
The layperson may think, oh, it's only cars that are impacted, but this is not true. Greenwire explained this well: "When vehicle standards take effect, greenhouse gases will officially become 'subject to regulation' under the Clean Air Act, which will trigger Clean Air Act permitting requirements for industrial sources like power plants, refineries and other large facilities." The standards fall under Title II of the CAA regulating tailpipe emissions. The new vehicle standards should save 1.8B, not million, but billion barrels of oil (equivalent to 50M cars off the road) and reduce 1B GHGs.
So what do these rule entail?
- Vehicles (both cars and trucks) must meet a 250gram CO2/mile in 2016 models- manufacturers will have to meet these limits. Will the costs of cars be any different from today as a result of having to meet these standards? EPA says the average cost will increase by less than $1000
- EPA will try to have a credit trading program for fleet averaging.
- Advanced Technology credits- incentivizes commercialization of advanced GHG/fuel economy technologies such as EVs, hybrids, etc.
THe Rule is in effect 60 days after publishing. The emission control requirements take effect Jan 2, 2011 and do not immediately trigger PSD program requirements for stationary sources.
Sunday, March 7, 2010
EPA is moving ahead with regulating greenhouse gases under the Clean Air Act in the time that Congress moves on a potential climate change bill. On XX date, Senator Kerry (D-MA) mentioned that Congress expects to have a revised Senate bill this year given that he and Senator Harry Reid prefer this.
At least 10 industry groups, 12 members of Congress, eight business associations, and three States (collectively, Petitioners) have filed petitions against EPA regarding the endangerment finding for greenhouse gases (EPA signed on December 7, 2009). In order for EPA to regulate greenhouse gases, they need to classify them as endangering public health. The House, under Representatives Collin Peterson (D-MN) and Skelton (D-MO), issued a joint venture between the Agriculture and Armed Services subcommittees to petition the endangerment. Likewise, the Senate, under Senator Lisa Murkowski (R-AK), have scheduled to vote on the petition by mid-March on the Senate floor.
The antoginism for the endangerment and the speculation of the core scientific data on which the endangerment is based have not slowed the EPA from acting.
Saturday, November 7, 2009
Scientific American article
Check out the stats from NPR:
"Still, your friendly neighborhood coal-burning power plant would emit a half-ton of carbon dioxide every year to keep this one TV on for five hours a day — and that's in energy-saving mode. For comparison, the 32-inch LCD in its brightest setting pulled about 115 watts. That's the equivalent of about two incandescent light bulbs or nine or 10 compact fluorescent lights."
I'm not trying to tell anyone to stop buying flat screens. My main concern is if everyone in American wants to advance him/herself and have a better salary, a better life, how can our future be sustainable if a better life demands more of the resources that are already limited. Americans don't make smart choices. We retrofit a house for a needy family with glitzy televisions that then increases their electric bills. We have to make smarter, sustainable choices. Does everyone really need an energy-guzzling TV to enjoy shows or movies?
If it has come across that I am pointing the finger to everyone else, I apologize, for I am a culprit of the crimes I have identified. My dreams include eventually having a moderately-sized home, traveling (god, airline emissions will bust my carbon footprint), and taking long hot showers which consumes energy and water.
So, are we on a path to achieve sustainable energy by 2030 as the article says? The author's plan calls for 3.8M large wind turbines, 90,000 solar plants, and more renewables including geothermal, tidal, and rooftop PV installations. How much energy does the U.S. currently consume and will consume?
The avg U.S. home in 2007 consumed 936 Kwh or a ~1MWh to simplify. In 2008 according to EIA, 46% of the energy consumed in the U.S. (based on 2008 generation by source data) came from coal, 22% from natural gas, 20% from nuclear, 6% from hydro, and the remaining 6% came from a combination of other renewables (including solar, wind, municipal solid wastes, etc.). Barely 1% of our 2008 electric generation came from petroleum liquids (distillate fuel oil, etc.) most likely due to high oil prices.
Is Al Gore's goal of having 100% carbon free electricity in 10 yrs realistic--and itself sustainable--if since 1995, coal generation has provided 50% of America's electricity. We want the carbon-free electricity that currently provides ~1/4 of our electricity to become 100%?
The article presents the following arguments:
- renewables cost centers/KWh (production cost + transmission) is about the same as that of coal fired generation. Total overal construction costs for WWS system is ~$5trillion/yr for 20 yrs ($100T total) worldwide (excluding transmission).
I think the drawback of this story is that it mentions the challenge of the intermittency of wind and solar but does not delve into it nor present a chart. Saying the cost of renewable is on par with coal when the U.S. lacks the smart grid and transmission to move generation from where the wind blows to where it is needed is a deficit to this story. I think this story would have been strengthened if it didn't bury these issues but graphically and more clearly addressed them. Instead, it spends a page on saying that the lack of materials, such as lithium for electric car batteris and concrete and steel for wind turbines, could hinder the development of renewables. Yes, and the fact that if you build and generate, our grid is not sufficient, in its current state, to move the power.
I support renewables and a sustainable future. I commend Mark Jacobson (a professor of civil and environmental engineering at Stanford) and Mark Delucchi (research scientist at Institute of Transportation studies at Univ of California, Davis) for recommending a plan. It is better than all of us who harp but do not have a plan. But I think the article needs to present all the potential hinderances to renewable development, not giving the impressing that renewable energy costs could easily be on par with the costs of coal generation. I think the article addresses the political and material obstacles, but not the financial obstacles fully. What is the total cost worldwide including tranmission? The cost to move the power from where the wind blows and the sun shines should be incorporated in the cost to generate renewables. Until that has happened, renewable costs are not going to be economic.
Sunday, September 20, 2009
Green Washington
Sunday, July 5, 2009
Coal Ash
According to a letter from Senator Pat Roberts (Kansas- a coal state), 13.7 million tons of coal ash per year is beneficially reused. I need to find out out of how much coal ash is produced. Twenty states signed a letter to EPA Administrator Lisa Jackson on June 26, 2009 noting that regulating coal ash as a hazardous waste would result in "regulatory overkill." My take on the regulatory overkill is that ash, which EPA used to characterize as nonhazardous because states had the facilities to properly contain the waste, would now be regulated. There is not enough landfill space, according to Senator Pat Roberts' letter to the EPA, to contain all the ash if all of it were considered hazardous. If classified as hazardous, ash can no longer be recycled, and EPA needs to find storage space for the ash which had been previously recycled.
The environmental conflict in this case is that EPA wants to ensure the protection of all its ash landfills so that no TVA spill is repeated. In the process of doing so, it could dismember the coal ash recycling program which would not be environmentally friendly.
Sunday, June 28, 2009
Generational Divide on Climate Change
Week of 6/25/09
Thursday, April 16, 2009
CO2 endangerment
Well, we are all waiting for EPA to pen their final signatures, the John Hancock, to the finding. Endangerment done, climate change legislation here we come.
Thursday, April 9, 2009
Wednesday, March 18, 2009
National Geographic Statistics
- 1 part per billion (ppb), a standard metric for measuring chemicals in the body, is like dropping a half-teaspoon of red dye into an Olympic swimming pool ("Pollution Within")
- A CFL uses so much less energy than an incandescent bulb, over its lifetime a single one can save electricity equivalent to the quarter-ton pile of coal in the foreground. - (April 2009 "Solutions for a Better World: A lighter footprint")
-For new plants coming online- 5-7 cents/KWh vs $0.22/kwh for solar
- average U.S. household emits 150lbs CO2/day from commonplace tasks
-a kwh of electricity in the U.S. produces 1.5lbs of Co2
- every 100 cf of nat gas emits 12 lbs of Co2
-China is building the equivalent of 2 midsize coal-fired powerplants a week
-a product's true cost includes the environmental impacdts from harvesting the raw materials used to make it, GHG s emitted in creating it, manufacturing process, packaging, transporting,
- a typical aluminum can can contain 40% recycled aluminum
Sunday, March 15, 2009
Grease Riders by Greg Melville
Climate Change Legislation
More to come...keep watching out for any Congressional developments.