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WorldChanging: Tools, Models and Ideas for Building a Bright Green Future: A Carbon-Neg... - 0 views

www.worldchanging.com/...007427.html sustainability
shared by Colin Bennett on 18 Oct 07 - Cached
  • listen to people working on gasification and terra preta, and you'll have something new to think about.
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Getting paid to conserve electricity - 0 views

www.practicalenvironmentalist.com/...id-to-conserve-electricity.htm business models conservation demand management peak
shared by Hans De Keulenaer on 11 Sep 07 - Cached
  • So why would a utility that makes money by selling power encourage someone to use less of it? The short answer is tight supply. Rather than paying higher spot prices to get more electricity onto the grid in times of peak usage, it is actually cheaper to set up these programs so that they can reduce consumer demand instead.
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AMD adds single-core Athlons to embedded portfolio - 0 views

www.linuxdevices.com/...NS6110819528.html efficiency
shared by davidchapman on 20 Sep 07 - Cached
  • davidchapman on 20 Sep 07
     
    Compatible with the company's AM2 socket, the AMD Athlon 64 processor Models 2000+, 2600+, and 3100+ feature power envelopes of 8, 15, and 25 Watts, respectively.
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Keynes on why competition in electricity and other network industries doesnot work - 0 views

www.epsu.org/3189 economics liberalisation quotations
shared by Hans De Keulenaer on 20 Sep 07 - Cached
  • Keynes goes further, to explain how economists move from simplifying assumptions to abandonment of the actual facts, and to conclude that reality is what their model says.
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How Your Favorite Brands Use Solar Power - 1 views

cleanergy.blogspot.com/...favorite-brands-use-solar.html renewables photovoltaics electricity
shared by Colin Bennett on 22 Sep 09 - Cached
  • Colin Bennett on 22 Sep 09
     
    Below are the Top 20 Forbes companies and a quick description of how they succeed, or epically fail, for that matter, at incorporating solar power into their business model. And then we'll complete the top 50 with a few highlights of those companies that excel above their peers. Solar Hall of Shame, here we come…
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Wind Turbine Output Boosted 30% by Breakthrough Design : CleanTechnica - 0 views

cleantechnica.com/...sted-30-by-breakthrough-design wind renewables civil engineering
shared by Hans De Keulenaer on 08 May 09 - Cached
  • Technological advancements in wind energy efficiency have generally come incrementally and usually made via a process of increasingly large wind turbine blades. Put simply, the model has been: longer blades = more output per turbine.
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Alternative Energy eMagazine - The Promise and Pitfalls of "Solar as a Service&quo... - 1 views

www.altenergymag.com/emagazine.php photovoltaics business models
shared by Hans De Keulenaer on 04 Mar 10 - Cached
  • By harnessing the limitless energy generated by the sun every day, solar power not only provides a potential means to free the world from its asphyxiating addiction to fossil fuels but also a unique ability to produce free energy. Of course, while the cost of generating solar power may be zero, the price of solar equipment is extraordinarily expensive. In fact, at close to $25,000 for a single-family house or $4.5 million for an average Wal-Mart store, the upfront cost of installing a solar power system can be prohibitively high.i
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NREL, Cost and Performance Assumptions for Modeling Electricity Generation Technologies... - 6 views

www.nrel.gov/...48595.pdf electricity usa costs
shared by F F on 09 Jan 11 - No Cached
  • F F on 09 Jan 11
     
    **Extremely useful comparison + charts** Covers 11 technologies from 6 data sources. Source detail included in appendix. Costs: capital, fixed, operating, learning factor; Technical: size, heat rate, [potential] capacity factor, service life. Note on unit life: not all data sets include this, some run as long as plant is economic (no pre-determined retirement age), can represent max service life or is just used to compute economics (e.g. LCOE).
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Feed in tariffs friend or foe? | The Energy Collective - 3 views

theenergycollective.com/...feed-tariffs-friend-or-foe
shared by Hans De Keulenaer on 26 Jan 11 - No Cached
  • As the World Future Energy Summit (WFES) draws to a close, I decided to tackle a topic that has been quietly popping up in many of the discussions and panel sessions this week.  In many places the topic of feed in tariffs is under heated debate.
  • Hans De Keulenaer on 26 Jan 11
     
    This merits revisiting. With the recent collapse of the Spanish market, the correction of the German market and the expected collapse of the French PV market, FITs prove unsustainable or victim of their own success. Once the market picks up, governments can no longer support their price tab. Moreover, they are based on a false premise: the cost of taking a technology through the learning cycle is prohibitive - it requires too many tens of billions.
  • Fernando on 28 Jan 11
     
    The topic is complex. Some underlying questions: * Why promotion of renewables was set-up? * What is the complete economic balance of renewables promotion? (expenses in subsidies, but savings in fuel imports, job creation, exports.... some interesting studies have been done on this - see for instance Macroeconomic study on the impact of Wind Energy in Spain - http://www.aeeolica.es/userfiles/file/aee-publica/091211-executive-summary-2009.pdf) * Is the allocation of subsidies cost done correctly? Electricity consumers often pay extra-cost, but benefits go to other pockets. Should there be a cost re-allocation to make the model sustainable? * Is regulatory framework evolving less rapidly than technology? FITs on PV in 2008 could be significantly reduced compared to FITs in 2007, and so on. How to accomodate regulation to that quick cost reduction? * Had governments defined a cap in global subsidies amount? Not really, this explains why they are all reacting to initial plans. * Development of technology and market drives costs down. Why some few countries should make this investment to the benefit of the entire world? * Have we excessively promoted market growth and neglected technology development? Are we paying too much for building power plants with primitive technology?
  • Hans De Keulenaer on 31 Jan 11
     
    @Fernando - I agree that the topic is complex. However, I'd refrain from making claims on employment effects. This is an area where secondary effects are rarely taken into account. While I realise these claims are popular, basically nobody knows.
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Government makes U turn on zero carbon commitment - 1 views

www.buildersmerchantsjournal.net/...news.asp buildings uk zero carbon domestic homes
shared by Hans De Keulenaer on 23 Mar 11 - No Cached
  • The Government will introduce more realistic requirements for on-site carbon reductions,endorsing the Zero Carbon Hub's expert recommendations on the appropriate levels of on-site reductions as the starting point for future consultation, along with their advice to move to an approach based on the carbon reductions that are achieved in real life, rather than those predicted by models.
  • This will be complemented by cost-effective options for off-site carbon reductions, relative to the Government's pricing of carbon, and Government will work with industry through consultation on how to take this forward.
  • Hans De Keulenaer on 23 Mar 11
     
    A surprising reaction from the UK Green Building Council to a policy change that appears to make a lot of sense.
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Converting Waste Heat to Electricity - 3 views

www.alternative-energy-news.info/waste-heat-to-electricity electricity heating
shared by Colin Bennett on 18 Oct 10 - No Cached
  • Using the waste heat as a form of electric power has multiple advantages. Whereas on one hand, using the theoretical model of molecular thermoelectric helps in increasing the efficiency of cars, power plants factories and solar panels, on the other hand efficient thermoelectric materials make ozone-depleting chlorofluorocarbons, or CFCs, outdated.
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The transition to a Zero Emission Vehicles fleet for cars in the EU by 2050 - 1 views

diigo.com/0aqqjg electric vehicles
shared by Hans De Keulenaer on 14 Nov 17 - No Cached
  • Decarbonising transport is central to achieving Europe’s policy commitments on climate change. T ransport is expected to deliver a 60% greenhouse gas (GHG) emissions reduction target of the EU for 2050. Achieving these commitments is expected to require a complete decarbonisation of the passenger car fleet. The more ambitious COP21 commitment to limit temperature rises to 1.5°C will also likely demand a complete decarbonisation of transport by 2050.
  • Attaining a 100% ZEV fleet by 2050 will require all new car sales to be ZEV by 2035 (assuming a similar vehicle life-time as today) and a substantially faster introduction of ZEVs and PHEVs than current policy and likely 2025 policies will achieve .
  • Compared to the CO2 emission reductions targeted in the current EU plan, the transition to a 100% ZEV car fleet by 2050 will result in an additional reduction of the cumulative CO2 emissions in the period 2020 and 2050 of 2.2 to 3.9 gigatonnes. The current EU White Paper for T ransport, targets to reduce the transport emissions by 60% compared to 1990.
  • ...9 more annotations...
  • The best option for a rapid emission reduction is to focus on BEVs rather than PHEVs whereby the EU goes directly and aggressively to 100% ZEV sales. A scenario where PHEVs are first will push the strong ZEV growth further into the future and will ultimately require a larger effort at a later time. However, the impact of (an early fleet of) PHEVs on reducing ZEV costs, increasing consumer acceptance and promoting investments in charging / fuelling infra is difficult to predict / model and may play an important role as well.
  • The “Tank to Wheel” amount of energy needed for transport will be reduced by 78% compared to today for a transition to a BEV passenger car fleet. A transition to a 100% fuel cell electric vehicle fleet will result in a 46% reduction of energy for the EU’s car fleet.
  • Around 1,740 million barrels of oil per year could be saved by 2050 with the transition to a zero-emission passenger car fleet, the equivalent of € 78 billion at the current price of 45 $ per barrel.
  • The GHGs from oil will potentially get higher if shifting to for example oil sands .
  • Purchase cost parity is assumed to be achieved in the period 2022-2026 for a BEV and a comparable internal combustion engine vehicle (ICEV), with BEVs being comparatively lower in cost after that. Parity at Total Cost of Ownership (TCO) level will be achieved 2 to 4 years before the purchase cost parity is achieved. The average TCO for a ZEV will be €0.04 to €0.06 per kilometre less than an ICEV by 2030.
  • This represents societal savings of € 140 billion to € 210 billion per year for a 100% ZEV EU car fleet.
  • A mass market for ZEV cars will create synergy for the cost competitive development of a ZEV LCV (Light Commercial V ehicles) market representing 17% of the light vehicles emissions. It will also accelerate the development of a HDV (Heavy Duty V ehicle) ZEV / PHEV market for passenger and goods transportation. It will also free up advanced biofuels for other transport sectors.
  • A lithium-ion battery manufacturing capacity of 400 to 600 Gigawatt hours will be required at the point where 100% of the passenger cars in Europe sold will be BEV . This is the equivalent of around 10 to 14 “Giga factories” representing a value of €40 to 60 billion per year for cars alone.
  • In addition, as BEVs have superior driving performance characteristics and people used to driving electric do not return to ICEVs, the transition may become demand driven once the price, range and infrastructure barriers have been removed.
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MIT World » : Global and Regional Climate Change: Underlying Science and Emer... - 0 views

mitworld.mit.edu/589 climate mit video tutorial
shared by Hans De Keulenaer on 08 Sep 08 - Cached
  • Veerabhadran Ramanathan recaps 35 years of key findings, and brings his audience up to date on the latest climate data, models, and observations which together demonstrate how CO2 is but one piece of a complex puzzle.
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The U. S. electric grid: will it be our undoing? | EnergyBulletin.net | Peak Oil News C... - 0 views

www.energybulletin.net/43823.html electricity future peak oil roadmap networks
shared by Hans De Keulenaer on 07 May 08 - Cached
  • Quite a few people believe that if there is a decline in oil production, we can make up much of the difference by increasing our use of electricity--more nuclear, wind, solar voltaic, geothermal or even coal. The problem with this model is that it assumes that our electric grid will be working well enough for this to happen. It seems to me that there is substantial doubt that this will be the case.
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Greentech Media: Cleantech Investing » Blog Archive » The auto industry needs... - 0 views

cleantechinvesting.greentechmedia.com/...the-vc-and-innovator-community cars
shared by Colin Bennett on 20 Jun 08 - Cached
  • Colin Bennett on 20 Jun 08
     
    It seems to me that the auto industry has a very intriguing opportunity right now to use all of the recent entrepreneurial and investment activity in clean transportation tech to their benefit. This opportunity could help them address the evident "gap" between highly innovative demonstration vehicle programs, and the historically slow pace of adoption of core innovations into mass-production models.
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Chrysler's Electric Car Coming in 2010 (Truthdig) - 0 views

www.truthdig.com/...rs_electric_car_coming_in_2010 electricity cars hybrid plug-in hybrids
shared by Jeff Johnson on 24 Sep 08 - Cached
Peter Fleming liked it
  • Jeff Johnson on 24 Sep 08
     
    Chrysler plans to sell either its all-electric sports car or one of two plug-in hybrid models sometime in 2010.
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