Stories tagged with "efficiency"
American Physical Society Report on Energy Efficiency
Posted by JoulesBurn on November 22, 2008 - 9:38am
Topic: Environment/Sustainability
Tags: doe, efficiency, original [list all tags]
The American Physical Society has just released a report on improving energy efficiency in the transportation and buildings sector:
Energy = Future Think Efficiency
There are links from the above to an Executive Summary and the full report (100 page PDF). This is not just a "change your light bulbs" document, but rather a comprehensive, information-filled challenge to the status quo with regards to government inaction with regards to energy conservation. It is also not a document on energy production and future difficulties in being able to do enough of this to keep the lights on -- even with better efficiency. But it is well worth a read, with lots of data on energy use and great graphics.

Oil Demand Destruction & Brittle Systems
Posted by jeffvail on August 20, 2008 - 10:08am
Topic: Economics/Finance
Tags: brittle systems, demand destruction, efficiency, elasticity, inelasticity, original, resilience [list all tags]
I've seen a number of comments, both at TheOilDrum and elsewhere, suggesting that the US is now less susceptible to supply disruptions because we have reduced our demand for oil by several hundred thousand barrels per day over the past year. In general, I get the sense that people think we can insulate ourselves from supply disruptions, from our dependence on potentially unreliable foreign sources of oil, by improving our efficiency and eliminating "unnecessary" oil consumption. In my opinion, this is backward. In this post, I will argue that, because the demand that is destroyed first in a free market is the demand that is easiest to eliminate, the resulting consumptive system is more inelastic, more brittle, and more susceptible to systemic shock from supply disruption. I will approach this argument by outlining what makes a system either resilient or brittle and why market-driven demand destruction creates a more brittle system. I will conclude with a few thoughts on how we can increase the resiliency of our energy-driven economy in a future environment of declining energy supplies.

Figure 1: A hypothetical model of market-driven demand destruction illustrates the theory that the highest elasticity demand is destroyed first. This results in the remaining demand being, in aggregate, more inelastic. "E" figures are meant only as relative measures of demand elasticity and are not meant as actual values for price elasticity of demand.
Maryland Legislation Taps Energy Efficiency as the "First Fuel"
Posted by Nate Hagens on April 9, 2008 - 7:54pm
Topic: Alternative energy
Tags: efficiency, maryland [list all tags]
Maryland Legislation Taps Energy Efficiency as the First Fuel
Governor O'Malley's Energy Efficiency Bills Are Passed by Legislature
Washington, D.C. (April 9, 2008): Maryland's legislators gave final approval this week to two landmark energy bills that together aim to reduce the state's energy consumption by 15% by 2015. The legislation, proposed by Governor Martin O'Malley, sets the stage for Maryland to become a leader in capturing the benefits of energy efficiency.
"These two bills provide a foundation for a clean and sustainable energy future for the state of Maryland," said Steven Nadel, Executive Director of the American Council for an Energy-Efficient Economy (ACEEE). "Maryland's policies now recognize energy efficiency as the 'first fuel' for meeting its future energy needs.
The Cogeneration Stopgap
Posted by Engineer-Poet on February 26, 2008 - 10:00am
Topic: Demand/Consumption
Tags: cogeneration, efficiency, entropy, v2g [list all tags]
The prospect of going through a cold winter with inadequate heat is a real one. More and more Americans are putting their winter heating fuel on credit, increasing their level of debt and the burden of servicing it. This cannot continue indefinitely. When the ARM resets or the credit cards max out, the whole house of cards (including paying the mortgage) falls down. Foreclosure is the problem in the mid-term, but freezing strikes as soon as there's no fuel for the furnace.
This problem is made much worse by fuel shortages and the consequent price spikes. As fuel supplies go down, prices go up. The alternative is rationing, but this has costs too; if commerce is shut down, employees don't get paid and the problem of paying for heat is much the same.
The problem comes down to affordability. Whether there is a limit to the gas available, or if incremental supplies command unaffordable prices, the alternatives are to do more with less, or do without. As N. American gas supplies are already shrinking, any good solution has to involve getting out in front of the problem and staying there.
The Tata Nano Strikes Back--Does Jevons' Paradox Apply to Productivity, Too?
Posted by jeffvail on February 5, 2008 - 10:00am
Topic: Demand/Consumption
Tags: efficiency, jevons paradox, peak oil [list all tags]
Can improvements in energy efficiency “save” modern civilization as we face declines in world oil production? While the efficiency revolution may let us drive on half the gas, the productivity revolution may make it affordable to twice as many--or more...
One argument against the efficacy of improving energy efficiency is called Jevons’ Paradox. This suggests that, when we improve our energy efficiency, we also reduce our demand for energy from that same use. That decreased demand in relation to supply makes energy cheaper, which in turn makes us use more of it. It has been suggested that this “rebound effect” only accounts for 5-20% of efficiency gains, but I have written previously about the potential for a “shadow” rebound effect that potentially accounts for nearly the entire efficiency gain.
The Tata Nano: While the efficiency revolution may let us drive on half the gas, the productivity revolution may make it affordable to twice as many--or more.
Often, I find it difficult to apply the very theoretical Jevons’ Paradox to pragmatic thinking about our energy future. The recent launch of the Tata Nano, however, stands as an example of Jevons’ Paradox in action. Possibly of much greater importance, however, are two related issues: the feedback effect between increased economic productivity and increasing energy consumption, and the aspirations of an emerging global middle class.
The UK Energy White Paper: An Academic Critique
Posted by Chris Vernon on October 7, 2007 - 7:00pm in The Oil Drum: Europe
Topic: Policy/Politics
Tags: climate change, efficiency, energy security, gas, nuclear, united kingdom [list all tags]
On 25th September 2007, the BIEE, the UKERC and the Energy Institute held a seminar in London where they invited academics to critique the 2007 Energy White Paper.
Background
In 2003 the UK government released the Energy White Paper 2003: Our Energy Future - Creating a Low Carbon Economy. As we all know, events in the energy world have moved fast since 2003, and faced by falling gas supplies from the North Sea and ageing nuclear power stations, the government launched another energy consultation in 2006, details of which are available online here. The result was another Energy White Paper, published in May 2007, this time with the subtitle Meeting the Energy Challenge. It seems to me that the change in the energy world over the intervening years can be seen from the change in the tone of the titles from 2003 to 2007!The purpose of the seminar was to bring together a range of academics to give a critique of the Energy White Paper – and they certainly were critical! So, without further ado, here are the key points form the speakers, with comments from me in italics where appropriate.
The slides are available on the BIEE website here: www.biee.org/downloads.php
The Round-Up: August 3rd 2007
Posted by Stoneleigh on August 3, 2007 - 3:08am in The Oil Drum: Canada
Topic: Miscellaneous
Tags: biochar, bioenergy, climate change, credit crunch, debt, derivatives, drought, efficiency, flooding, hedge funds, liquidity, mortgages, oil sands, resilience, risk, sovereignty, subprime, water, wind [list all tags]
The situation in the credit markets continues to worsen as a sudden attack of risk aversion rapidly dries up liquidity. And this is before the resetting of adjustable rate mortgages (ARMs) begins in earnest - to the tune of $50 billion - in October. Watch this space.
On the Canadian energy scene, Shell pumps $27 billion into the oil sands, even as oil patch profitability falls. Abu Dhabi wants to invest in Canadian power plants, and there are plans for BC to host an LNG terminal. Wind power grows rapidly in Ontario and Quebec, making a few enemies along the way. In BC they ask: should public transit be free?
On the climate front, water is the issue - too little and too much. Finally, in the tug-of-war between efficiency and resilience, efficiency has the upper hand, but what price will we pay for allowing our life support system to become brittle?

You may remember that our definition of household cash is as broad as can be. We include all household "banking products", per se, but also include all household holdings of bonds, inclusive of Treasuries, Agencies, corporates, muni's and mortgage backed paper. Implicitly, we are assuming bond holdings could be converted to cash at a moments notice. So what follows is simply total household cash less total household liabilities over the last six decades.

The Energy Return on Time
Posted by Nate Hagens on July 25, 2007 - 10:07am
Topic: Alternative energy
Tags: demand, discount rates, efficiency, eroi, just-in-time, net energy, sustainability, time [list all tags]
While writing the recent piece on home heating, I was surprised to calculate many different numbers for the energy return on firewood. Though the outputs were only slightly different in quantity of BTUs, there was a wide range of inputs. But the primary reason for the return disparity was the presence of the market economy - those processing firewood for their own use had higher energy returns than those selling wood for profit - the accelerated drying time to process large amounts of wood required an additional wood input which dropped the energy return. Graphically this showed up as a tradeoff between maximizing energy return on TIME versus maximizing energy return on ENERGY. This reminded me that energy return is not a hard-and-fast principle, and also that society, obviously, will optimize its resources based on what it perceives to be its most limiting input(s). However, in an upcoming world constrained by energy, or any limiting variable other than time/money, we can increase our energy available by reducing the return on other inputs, such as time.
Thursday morning at Clean Tech 2007
Posted by Engineer-Poet on June 2, 2007 - 10:54am
Topic: Demand/Consumption
Tags: efficiency, venture capital [list all tags]
Apologies for the delay, but dinner with Stuart Staniford (great guy!) took up most of Thursday evening and there's little power and even less connectivity in Yosemite. (Great waterfalls and cool geology and other stuff, though.) Now that I'm landed in Kansas with a bit of connectivity for a couple days, I can give you more of what I saw!
8:30: Lawrence DuBois
The first session I caught was with Lawrence DuBois
of SRI International. SRI
is a contract R&D organization which has its fingers in many pies. This gives
them a great deal of expertise in many areas, some of which are applicable to energy.
DuBois noted that alternative energy systems use massive amounts of materials compared to at least some conventional systems (gravity dams excepted, I suppose). He cited some numbers I didn't write down fast enough. He then went on to other developments.
The first one he mentioned was... a Direct Carbon Fuel Cell (DCFC)! I was rather surprised to hear SRI claiming credit for this, but this matter was clarified later. The attraction of the DCFC is that the coal market has very different dynamics from oil and gas, and coal is still a great deal cheaper per BTU than the others. Coal is still a major energy source (as little as some of us like it) and forms a $150 billion/year market (I believe this is world-wide).
The Round-Up: May 31st 2007
Posted by Stoneleigh on May 31, 2007 - 10:42am in The Oil Drum: Canada
Topic: Miscellaneous
Tags: climate change, derivatives, efficiency, energy security, geothermal, lng, mackenzie valley pipeline, oil sands, water, wind [list all tags]
Major Loss Of Gas Reserves Seen If ExxonMobil Scraps Pipeline
ExxonMobil's possible move to scrap natural gas pipelines in Alaska and Canada could amount to the equivalent of losing all the country's production in the Gulf of Mexico, an energy analyst said Thursday.
"It's the biggest energy story of the year," said Andrew Weissman of FTI Consulting.
Although natural gas and gasoline prices fell on Thursday following a rise in supply, Weissman said the market has yet to weigh the implications of ExxonMobil's (XOM) decision to possibly back away from building the Mackenzie Valley pipeline in Canada.
ExxonMobil Chairman and CEO Rex Tillerson told reporters after the company's annual meeting Wednesday that the $16.2 billion price tag for the delayed Mackenzie Valley pipeline is too expensive without more government subsidies.
"We are now in a situation where it's not economic at current costs," Tillerson said in an article published by The Globe and Mail. "It may just be that the project is going to have to wait for a different cost environment."

k Nation (Jim Kunstler)


GAIA Host Collective