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Climate change as an
entrepreneurial challenge
Jonathan Koomey
Research Fellow, Steyer-Taylor Center for Energy
Policy and Finance, Stanford University
jgkoomey@stanford.edu
http://www.koomey.com
Climate Reality–St. Louis
July 27, 2014
1Copyright Jonathan Koomey 2014
The world is warming and humans are
responsible
“A strong, credible body of scientific evidence shows that climate
change is occurring, is caused largely by human activities, and poses
significant risks for a broad range of human and natural systems. . . .
Some scientific conclusions or theories have been so thoroughly
examined and tested, and supported by so many independent
observations and results, that their likelihood of subsequently being
found to be wrong is vanishingly small. Such conclusions and
theories are then regarded as settled facts. This is the case for the
conclusions that the Earth system is warming and that much of this
warming is very likely due to human activities.”
US National Academy of Sciences. 2010. Advancing the Science of
Climate Change
2Copyright Jonathan Koomey 2014
Historical global C emissions
Sources: Carbon Dioxide Information Analysis Center (CDIAC),
plotted in Cold Cash, Cool Climate.
Copyright Jonathan Koomey 2014 3
Big jump in CO2 concentrations from
fossil fuels and land use changes
Sources: Vostok and Lawdome
ice core data, plus measured
concentrations from the
Carbon Dioxide Information
Analysis Center, plotted in Cold
Cash, Cool Climate
Copyright Jonathan Koomey 2014 4
A closer look at the last 12,000 years
Sources: Vostok and Lawdome
ice core data, plus measured
concentrations from the
Carbon Dioxide Information
Analysis Center, plotted in Cold
Cash, Cool Climate
Copyright Jonathan Koomey 2014 5
Global surface temperatures have
risen in the last century
Source: The Copenhagen Diagnosis 2009
Copyright Jonathan Koomey 2014 6
Increasing temperatures “load the
dice”
Source: Adapted from a graph made originally by the University of
Arizona, Southwest Climate Change Network
Copyright Jonathan Koomey 2014 7
What the data show
8
Source: The New Climate Dice: Public Perception of
Climate Change. James Hansen, Makiko Sato, and
Reto Ruedy. August 2012.
http://www.giss.nasa.gov/research/briefs/hansen_17/
. Data are for Northern Hemisphere.
X-axes in graphs below are in standard deviations, not
C degrees.
Copyright Jonathan Koomey 2014
No-policy case carbon dioxide
concentrations to 2100
Source: Sokolov et al.
2009 for projected
concentrations and ice
core and directly measured
data for historical numbers.
Copyright Jonathan Koomey 2014 9
No-policy case greenhouse gas
concentrations to 2100 (all gases)
Copyright Jonathan Koomey 2014 10
Source: Sokolov et al.
2009 for projected
concentrations and ice
core and directly measured
data for historical numbers.
No-policy case greenhouse gas
concentrations to 2100
Source: Sokolov et al. 2009, plotted in Cold Cash, Cool Climate
Copyright Jonathan Koomey 2014 11
Current trends = 5 C degrees by 2100,
with no end in sight
Adapted from Copenhagen Diagnosis 2009, with MIT
data taken from Sokolov et al. 2009. MIT climate sensitivity is
2.9 degrees C, but warming by 2100 doesn’t reflect the full
warming impact because full equilibration takes centuries.
12Copyright Jonathan Koomey 2014
Fossil fuel scarcity will not constrain
carbon emissions
Source: Lower bound resource estimates from the IIASA Global Energy
Assessment 2012 + Sokolov et al. 2009 (fossil emissions only).
13Copyright Jonathan Koomey 2014
What can we do?
14Copyright Jonathan Koomey 2014
Our options
• Adapt–modify human systems to make
them more flexible and resilient
• Suffer–accept what comes (but what
comes is likely to be costly in lives,
ecosystem damage, and economic
disruption)
• Mitigate–reduce emissions
15Copyright Jonathan Koomey 2014
Questions about mitigation options
• How much carbon will they save?
• How much will they cost?
• Are they feasible
– technically? (science and technology)
– logistically? (implementation and
policy)
– politically? (social will and equity)
16Copyright Jonathan Koomey 2014
17
Cost-benefit analysis: the standard
approach
Copyright Jonathan Koomey 2014
The forecasting quandary
• Economics ≠ physics: we need to act, but it’s
impossible to calculate costs and benefits in
an accurate way
• Implication: the conventional model of full
benefit-cost analysis before acting is not
adequate to address this problem
18Copyright Jonathan Koomey 2014
An evolutionary, path-dependent view
• There is no “optimal path”, but there are many
possible alternative paths
– We can’t plan or know everything about the path
ahead but the warming limit defines the broad
outlines of success
• Our choices now affect our options later
• Need to
– invest in a broad portfolio of options
– fail fast
– modify plans dynamically
– learn as fast as we can
19Copyright Jonathan Koomey 2014
An alternative approach
• Define a warming limit (e.g. 2 C degrees above
preindustrial levels)
• Determine the total greenhouse gases we can
then emit to stay under that limit
• Define pathways that meet that constraint
• Assess what we’d need to do achieve that
pathway (# of power plants, rate of improvement
in energy efficiency, etc)
• Try options, fail fast, alter course as needed
20Copyright Jonathan Koomey 2014
There’s no time to waste
21
Source: The Copenhagen Diagnosis, 2009
Copyright Jonathan Koomey 2014
Working toward the limit
• Like strategic planning, not forecasting
• e.g., to meet some fraction of the target
– how many emission-free power plants would we
have to build and how much capital would that
require?
– how fast would efficiency need to improve given
expected rates of economic growth?
– what institutional changes would be needed to
accelerate the rate of implementation?
• A way to organize our thinking about solutions
to the problem
22Copyright Jonathan Koomey 2014
Meeting constraints of the safer climate
case won’t be easy
Source: Lower bound resource estimates from the IIASA Global Energy
Assessment 2012 + calcs in Cold Cash, Cool Climate (fossil emissions only). 23Copyright Jonathan Koomey 2014
Lessons for entrepreneurs
• Start with tasks, then redefine them
• Focus on the whole system
• Time is money
• Modify property rights
• Harness information technology
– Data collection
– Substitute bits for atoms and smarts for parts
– Transform institutions
• Work forward toward goals to learn more rapidly
Copyright Jonathan Koomey 2014 24
Computing efficiency
•Doubling about every year
and a half since the 1940s
•100x improvement every
decade
•Enabled the existence of
laptops and smart phones
25Copyright Jonathan Koomey 2014
Source: Koomey et al. 2011
These trends still
have a long way to
run
Psssst: Researchers at
Purdue and the University of
New South Wales in 2012
created a reliable one atom
transistor…
2041
26Copyright Jonathan Koomey 2014
Summary
• Warming limit approach is similar to how businesses
make big strategic decisions
• Focus is on risk reduction, experimentation, evaluation,
innovation and cost effectiveness, not on knowing
“optimal” path in advance (impossible!)
• Science points to 2 deg C limit but ultimate choice is a
political judgment
– Declare value judgment up front (not buried in black box
models, as is customary)
• Implies rapid reductions and keeping most fossil fuels in
the ground (requires rapid innovations in technologies
AND behavior/institutions)
27Copyright Jonathan Koomey 2014
Summary (continued)
• Immediate implementation is essential (can’t
just wait and see while doing R&D)
– Learning by doing only happens if we do!
• Existing low carbon resources are plentiful but
we’ll need new innovations in later decades to
keep reductions on track
• Start small. Think big. Get going!
28Copyright Jonathan Koomey 2014
“The best way to predict the future is to
invent it.” –Alan Kay
29Copyright Jonathan Koomey 2014
References
• Allison, et al. 2009. The Copenhagen Diagnosis, 2009: Updating the World on the Latest Climate Science. Sydney, Australia: The
University of New South Wales Climate Change Research Centre (CCRC).
• Caldeira, Ken, Atul K. Jain, and Martin I. Hoffert. 2003. "Climate Sensitivity Uncertainty and the Need for Energy Without CO2 Emission
" Science. vol. 299, no. 5615. pp. 2052-2054. <http://www.sciencemag.org/cgi/content/abstract/299/5615/2052>
• DeCanio, Stephen J. 2003. Economic Models of Climate Change: A Critique. Basingstoke, UK: Palgrave-Macmillan.
• Brown, Marilyn A., Mark D. Levine, Walter Short, and Jonathan G. Koomey. 2001. "Scenarios for a Clean Energy Future." Energy
Policy (Also LBNL-48031). vol. 29, no. 14. November. pp. 1179-1196.
• Gritsevskyi, Andrii, and Nebojsa Nakicenovic. 2000. "Modeling uncertainty of induced technological change." Energy Policy. vol. 28, no.
13. November. pp. 907-921.
• Koomey, Jonathan. Testimony of Jonathan Koomey, Ph.D. for a hearing on "Efficiency: The Hidden Secret to Solving Our Energy
Crisis". Joint Economic Committee of the U.S. Congress. U.S. Congress. Washington, DC: U.S. Congress. July 30, 2008.
<http://www.jec.senate.gov/index.cfm?FuseAction=Hearings.HearingsCalendar&ContentRecord_id=6fc51d63-e7e2-82b7-10c3-
3faa2c150115>
• Koomey, Jonathan G., Stephen Berard, Marla Sanchez, and Henry Wong. 2011. "Implications of Historical Trends in The Electrical
Efficiency of Computing." IEEE Annals of the History of Computing. vol. 33, no. 3. July-September. pp. 46-54.
[http://doi.ieeecomputersociety.org/10.1109/MAHC.2010.28]
• Koomey, Jonathan G. Cold Cash, Cool Climate: Science-Based Advice for Ecological Entrepreneurs. Burlingame, CA: Analytics Press,
2012.
• Krause, Florentin, Wilfred Bach, and Jonathan G. Koomey. 1992. Energy Policy in the Greenhouse. NY, NY: John Wiley and Sons. (1989
edition of this book downloadable at <http://files.me.com/jgkoomey/9jzwgj>)
• Meinshausen, Malte, Nicolai Meinshausen, William Hare, Sarah C. B. Raper, Katja Frieler, Reto Knutti, David J. Frame, and Myles R.
Allen. 2009. "Greenhouse-gas emission targets for limiting global warming to 2 degrees C." Nature. vol. 458, April 30. pp. 1158-1162.
<http://www.nature.com/nature/journal/v458/n7242/full/nature08017.html>
• Pacala, S., and Rob Socolow. 2004. "Stabilization Wedges: Solving the Climate Problem for the Next 50 Years with Current Technologies
" Science. vol. 305, no. 5686. August 13. pp. 968-972. [http://www.sciencemag.org/cgi/content/abstract/305/5686/968]
• Williams, James H., Andrew DeBenedictis, Rebecca Ghanadan, Amber Mahone, Jack Moore, William R. Morrow, Snuller Price, and
Margaret S. Torn. 2011. "The Technology Path to Deep Greenhouse Gas Emissions Cuts by 2050: The Pivotal Role of
Electricity." Science. November 24. [http://www.sciencemag.org/content/early/2011/11/22/science.1208365.abstract]
30Copyright Jonathan Koomey 2014
Extra slides
31Copyright Jonathan Koomey 2014
Contributors to climate change
through 2005
Source: IPCC 2007 (Working Group 1, the Physical Science Basis)Copyright Jonathan Koomey 2014 32
Percent of US land area subject to 1
day precipitation extremes
Source: NCDC/NOAA 2011
Copyright Jonathan Koomey 2014 33
2 C degree warming limit
• Keeps global T within humanity’s experience
• Likely avoids the worst of the positive feedbacks
• Implies cumulative GHG emissions “budget”
• Limit itself now widely accepted (e.g., G8 in 2009), but
implications still not well known
– Global emissions must turn down this decade, down 50%
by 2050, more soon afterwards
– Waiting has a real cost
– We must act quickly on many fronts
• It’s Sputnik, not Apollo
– We can’t burn it all
• C Storage not practically relevant for decades, if ever
34Copyright Jonathan Koomey 2014
Most 2050 infrastructure built
between now and 2050
35Copyright Jonathan Koomey 2014
Forecasts often underestimate the
possibilities for change
• Economic models (with very few exceptions)
– assume current rigidities will continue forward in the
forecast (“The Big Mistake”, related to Ascher’s
“assumption drag”)
– assume structure of property rights is constant
– ignore increasing returns to scale
– rely on incomplete technology and policy portfolios
– ignore “no-regrets” options
• All but last issue true for top-down AND bottom-
up models
36Copyright Jonathan Koomey 2014
Delaying makes no sense in the
warming limit context
• When we act makes a difference
• Delaying action on climate
– eats up the budget
– makes required reductions more difficult and
costly later
– sacrifices learning and reduces possibilities for
future action
• Remember, energy techs don’t ∆ fast
37Copyright Jonathan Koomey 2014
Impacts of Uncertainty, Learning, and Spillovers (IPCC AR4 , 2007)
Figure 2.2. Emissions impacts of exploring the full spectrum of technological uncertainty in a given scenario without climate policies.
Relative frequency (percent) of 130,000 scenarios of full technological uncertainty regrouped into 520 sets of technology dynamics with
their corresponding carbon emissions (GtC) by 2100 obtained through numerical model simulations for a given scenario of intermediary
population, economic output, and energy demand growth. Also shown is a subset of 13,000 scenarios grouped into 53 sets of
technology dynamics that are all "optimal" in the sense of satisfying a cost minimization criterion in the objective function. The
corresponding distribution function is bi-modal, illustrating "technological lock-in" into low or high emissions futures respectively that
arise from technological interdependence and spillover effects. Baseline emissions are an important determinant for the feasibility and
costs of achieving particular climate targets that are ceteris paribus cheaper with lower baseline emissions. Adapted from Gritsevskyi
and Nakicenovic, 2000.
38Copyright Jonathan Koomey 2014
Decanio concludes…
“The application of general equilibrium analysis to climate
policy has produced a kind of specious precision, a situation
in which the assumptions of the analysts masquerade as
results that are solidly grounded in theory and the data. This
leads to a tremendous amount of confusion and mischief,
not least of which is the notion that although the physical
science of the climate is plagued by uncertainties, it is
possible to know with a high degree of certainty just what
the economic consequences of alternative policy actions will
be.” (italics in original)
39Copyright Jonathan Koomey 2014
Fossil fuel resources are huge
40Source: Table A-1 from Cold Cash, Cool Climate, mainly using GEA data 2012
Note: Current annual
global primary energy
use is 0.6 ZJ (1 ZJ =
1000 EJ or 10e21 J),
which is about 30 TW.
Copyright Jonathan Koomey 2014
Brainstorming exercise
If computing efficiency continues to improve at
historic rates, it will increase by a factor of 100
over the next decade, with consequent
improvements in mobile computing, sensors,
and controls. What new applications and
products could become possible with such rapid
efficiency improvements 10 years hence? What
other innovations would need to emerge to
enable the use of more efficient computing ?
Copyright Jonathan Koomey 2014 41

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Climate Change as an Entrepreneurial Challenge: A virtual talk for the St. Louis Climate Reality group

  • 1. Climate change as an entrepreneurial challenge Jonathan Koomey Research Fellow, Steyer-Taylor Center for Energy Policy and Finance, Stanford University jgkoomey@stanford.edu http://www.koomey.com Climate Reality–St. Louis July 27, 2014 1Copyright Jonathan Koomey 2014
  • 2. The world is warming and humans are responsible “A strong, credible body of scientific evidence shows that climate change is occurring, is caused largely by human activities, and poses significant risks for a broad range of human and natural systems. . . . Some scientific conclusions or theories have been so thoroughly examined and tested, and supported by so many independent observations and results, that their likelihood of subsequently being found to be wrong is vanishingly small. Such conclusions and theories are then regarded as settled facts. This is the case for the conclusions that the Earth system is warming and that much of this warming is very likely due to human activities.” US National Academy of Sciences. 2010. Advancing the Science of Climate Change 2Copyright Jonathan Koomey 2014
  • 3. Historical global C emissions Sources: Carbon Dioxide Information Analysis Center (CDIAC), plotted in Cold Cash, Cool Climate. Copyright Jonathan Koomey 2014 3
  • 4. Big jump in CO2 concentrations from fossil fuels and land use changes Sources: Vostok and Lawdome ice core data, plus measured concentrations from the Carbon Dioxide Information Analysis Center, plotted in Cold Cash, Cool Climate Copyright Jonathan Koomey 2014 4
  • 5. A closer look at the last 12,000 years Sources: Vostok and Lawdome ice core data, plus measured concentrations from the Carbon Dioxide Information Analysis Center, plotted in Cold Cash, Cool Climate Copyright Jonathan Koomey 2014 5
  • 6. Global surface temperatures have risen in the last century Source: The Copenhagen Diagnosis 2009 Copyright Jonathan Koomey 2014 6
  • 7. Increasing temperatures “load the dice” Source: Adapted from a graph made originally by the University of Arizona, Southwest Climate Change Network Copyright Jonathan Koomey 2014 7
  • 8. What the data show 8 Source: The New Climate Dice: Public Perception of Climate Change. James Hansen, Makiko Sato, and Reto Ruedy. August 2012. http://www.giss.nasa.gov/research/briefs/hansen_17/ . Data are for Northern Hemisphere. X-axes in graphs below are in standard deviations, not C degrees. Copyright Jonathan Koomey 2014
  • 9. No-policy case carbon dioxide concentrations to 2100 Source: Sokolov et al. 2009 for projected concentrations and ice core and directly measured data for historical numbers. Copyright Jonathan Koomey 2014 9
  • 10. No-policy case greenhouse gas concentrations to 2100 (all gases) Copyright Jonathan Koomey 2014 10 Source: Sokolov et al. 2009 for projected concentrations and ice core and directly measured data for historical numbers.
  • 11. No-policy case greenhouse gas concentrations to 2100 Source: Sokolov et al. 2009, plotted in Cold Cash, Cool Climate Copyright Jonathan Koomey 2014 11
  • 12. Current trends = 5 C degrees by 2100, with no end in sight Adapted from Copenhagen Diagnosis 2009, with MIT data taken from Sokolov et al. 2009. MIT climate sensitivity is 2.9 degrees C, but warming by 2100 doesn’t reflect the full warming impact because full equilibration takes centuries. 12Copyright Jonathan Koomey 2014
  • 13. Fossil fuel scarcity will not constrain carbon emissions Source: Lower bound resource estimates from the IIASA Global Energy Assessment 2012 + Sokolov et al. 2009 (fossil emissions only). 13Copyright Jonathan Koomey 2014
  • 14. What can we do? 14Copyright Jonathan Koomey 2014
  • 15. Our options • Adapt–modify human systems to make them more flexible and resilient • Suffer–accept what comes (but what comes is likely to be costly in lives, ecosystem damage, and economic disruption) • Mitigate–reduce emissions 15Copyright Jonathan Koomey 2014
  • 16. Questions about mitigation options • How much carbon will they save? • How much will they cost? • Are they feasible – technically? (science and technology) – logistically? (implementation and policy) – politically? (social will and equity) 16Copyright Jonathan Koomey 2014
  • 17. 17 Cost-benefit analysis: the standard approach Copyright Jonathan Koomey 2014
  • 18. The forecasting quandary • Economics ≠ physics: we need to act, but it’s impossible to calculate costs and benefits in an accurate way • Implication: the conventional model of full benefit-cost analysis before acting is not adequate to address this problem 18Copyright Jonathan Koomey 2014
  • 19. An evolutionary, path-dependent view • There is no “optimal path”, but there are many possible alternative paths – We can’t plan or know everything about the path ahead but the warming limit defines the broad outlines of success • Our choices now affect our options later • Need to – invest in a broad portfolio of options – fail fast – modify plans dynamically – learn as fast as we can 19Copyright Jonathan Koomey 2014
  • 20. An alternative approach • Define a warming limit (e.g. 2 C degrees above preindustrial levels) • Determine the total greenhouse gases we can then emit to stay under that limit • Define pathways that meet that constraint • Assess what we’d need to do achieve that pathway (# of power plants, rate of improvement in energy efficiency, etc) • Try options, fail fast, alter course as needed 20Copyright Jonathan Koomey 2014
  • 21. There’s no time to waste 21 Source: The Copenhagen Diagnosis, 2009 Copyright Jonathan Koomey 2014
  • 22. Working toward the limit • Like strategic planning, not forecasting • e.g., to meet some fraction of the target – how many emission-free power plants would we have to build and how much capital would that require? – how fast would efficiency need to improve given expected rates of economic growth? – what institutional changes would be needed to accelerate the rate of implementation? • A way to organize our thinking about solutions to the problem 22Copyright Jonathan Koomey 2014
  • 23. Meeting constraints of the safer climate case won’t be easy Source: Lower bound resource estimates from the IIASA Global Energy Assessment 2012 + calcs in Cold Cash, Cool Climate (fossil emissions only). 23Copyright Jonathan Koomey 2014
  • 24. Lessons for entrepreneurs • Start with tasks, then redefine them • Focus on the whole system • Time is money • Modify property rights • Harness information technology – Data collection – Substitute bits for atoms and smarts for parts – Transform institutions • Work forward toward goals to learn more rapidly Copyright Jonathan Koomey 2014 24
  • 25. Computing efficiency •Doubling about every year and a half since the 1940s •100x improvement every decade •Enabled the existence of laptops and smart phones 25Copyright Jonathan Koomey 2014 Source: Koomey et al. 2011
  • 26. These trends still have a long way to run Psssst: Researchers at Purdue and the University of New South Wales in 2012 created a reliable one atom transistor… 2041 26Copyright Jonathan Koomey 2014
  • 27. Summary • Warming limit approach is similar to how businesses make big strategic decisions • Focus is on risk reduction, experimentation, evaluation, innovation and cost effectiveness, not on knowing “optimal” path in advance (impossible!) • Science points to 2 deg C limit but ultimate choice is a political judgment – Declare value judgment up front (not buried in black box models, as is customary) • Implies rapid reductions and keeping most fossil fuels in the ground (requires rapid innovations in technologies AND behavior/institutions) 27Copyright Jonathan Koomey 2014
  • 28. Summary (continued) • Immediate implementation is essential (can’t just wait and see while doing R&D) – Learning by doing only happens if we do! • Existing low carbon resources are plentiful but we’ll need new innovations in later decades to keep reductions on track • Start small. Think big. Get going! 28Copyright Jonathan Koomey 2014
  • 29. “The best way to predict the future is to invent it.” –Alan Kay 29Copyright Jonathan Koomey 2014
  • 30. References • Allison, et al. 2009. The Copenhagen Diagnosis, 2009: Updating the World on the Latest Climate Science. Sydney, Australia: The University of New South Wales Climate Change Research Centre (CCRC). • Caldeira, Ken, Atul K. Jain, and Martin I. Hoffert. 2003. "Climate Sensitivity Uncertainty and the Need for Energy Without CO2 Emission " Science. vol. 299, no. 5615. pp. 2052-2054. <http://www.sciencemag.org/cgi/content/abstract/299/5615/2052> • DeCanio, Stephen J. 2003. Economic Models of Climate Change: A Critique. Basingstoke, UK: Palgrave-Macmillan. • Brown, Marilyn A., Mark D. Levine, Walter Short, and Jonathan G. Koomey. 2001. "Scenarios for a Clean Energy Future." Energy Policy (Also LBNL-48031). vol. 29, no. 14. November. pp. 1179-1196. • Gritsevskyi, Andrii, and Nebojsa Nakicenovic. 2000. "Modeling uncertainty of induced technological change." Energy Policy. vol. 28, no. 13. November. pp. 907-921. • Koomey, Jonathan. Testimony of Jonathan Koomey, Ph.D. for a hearing on "Efficiency: The Hidden Secret to Solving Our Energy Crisis". Joint Economic Committee of the U.S. Congress. U.S. Congress. Washington, DC: U.S. Congress. July 30, 2008. <http://www.jec.senate.gov/index.cfm?FuseAction=Hearings.HearingsCalendar&ContentRecord_id=6fc51d63-e7e2-82b7-10c3- 3faa2c150115> • Koomey, Jonathan G., Stephen Berard, Marla Sanchez, and Henry Wong. 2011. "Implications of Historical Trends in The Electrical Efficiency of Computing." IEEE Annals of the History of Computing. vol. 33, no. 3. July-September. pp. 46-54. [http://doi.ieeecomputersociety.org/10.1109/MAHC.2010.28] • Koomey, Jonathan G. Cold Cash, Cool Climate: Science-Based Advice for Ecological Entrepreneurs. Burlingame, CA: Analytics Press, 2012. • Krause, Florentin, Wilfred Bach, and Jonathan G. Koomey. 1992. Energy Policy in the Greenhouse. NY, NY: John Wiley and Sons. (1989 edition of this book downloadable at <http://files.me.com/jgkoomey/9jzwgj>) • Meinshausen, Malte, Nicolai Meinshausen, William Hare, Sarah C. B. Raper, Katja Frieler, Reto Knutti, David J. Frame, and Myles R. Allen. 2009. "Greenhouse-gas emission targets for limiting global warming to 2 degrees C." Nature. vol. 458, April 30. pp. 1158-1162. <http://www.nature.com/nature/journal/v458/n7242/full/nature08017.html> • Pacala, S., and Rob Socolow. 2004. "Stabilization Wedges: Solving the Climate Problem for the Next 50 Years with Current Technologies " Science. vol. 305, no. 5686. August 13. pp. 968-972. [http://www.sciencemag.org/cgi/content/abstract/305/5686/968] • Williams, James H., Andrew DeBenedictis, Rebecca Ghanadan, Amber Mahone, Jack Moore, William R. Morrow, Snuller Price, and Margaret S. Torn. 2011. "The Technology Path to Deep Greenhouse Gas Emissions Cuts by 2050: The Pivotal Role of Electricity." Science. November 24. [http://www.sciencemag.org/content/early/2011/11/22/science.1208365.abstract] 30Copyright Jonathan Koomey 2014
  • 32. Contributors to climate change through 2005 Source: IPCC 2007 (Working Group 1, the Physical Science Basis)Copyright Jonathan Koomey 2014 32
  • 33. Percent of US land area subject to 1 day precipitation extremes Source: NCDC/NOAA 2011 Copyright Jonathan Koomey 2014 33
  • 34. 2 C degree warming limit • Keeps global T within humanity’s experience • Likely avoids the worst of the positive feedbacks • Implies cumulative GHG emissions “budget” • Limit itself now widely accepted (e.g., G8 in 2009), but implications still not well known – Global emissions must turn down this decade, down 50% by 2050, more soon afterwards – Waiting has a real cost – We must act quickly on many fronts • It’s Sputnik, not Apollo – We can’t burn it all • C Storage not practically relevant for decades, if ever 34Copyright Jonathan Koomey 2014
  • 35. Most 2050 infrastructure built between now and 2050 35Copyright Jonathan Koomey 2014
  • 36. Forecasts often underestimate the possibilities for change • Economic models (with very few exceptions) – assume current rigidities will continue forward in the forecast (“The Big Mistake”, related to Ascher’s “assumption drag”) – assume structure of property rights is constant – ignore increasing returns to scale – rely on incomplete technology and policy portfolios – ignore “no-regrets” options • All but last issue true for top-down AND bottom- up models 36Copyright Jonathan Koomey 2014
  • 37. Delaying makes no sense in the warming limit context • When we act makes a difference • Delaying action on climate – eats up the budget – makes required reductions more difficult and costly later – sacrifices learning and reduces possibilities for future action • Remember, energy techs don’t ∆ fast 37Copyright Jonathan Koomey 2014
  • 38. Impacts of Uncertainty, Learning, and Spillovers (IPCC AR4 , 2007) Figure 2.2. Emissions impacts of exploring the full spectrum of technological uncertainty in a given scenario without climate policies. Relative frequency (percent) of 130,000 scenarios of full technological uncertainty regrouped into 520 sets of technology dynamics with their corresponding carbon emissions (GtC) by 2100 obtained through numerical model simulations for a given scenario of intermediary population, economic output, and energy demand growth. Also shown is a subset of 13,000 scenarios grouped into 53 sets of technology dynamics that are all "optimal" in the sense of satisfying a cost minimization criterion in the objective function. The corresponding distribution function is bi-modal, illustrating "technological lock-in" into low or high emissions futures respectively that arise from technological interdependence and spillover effects. Baseline emissions are an important determinant for the feasibility and costs of achieving particular climate targets that are ceteris paribus cheaper with lower baseline emissions. Adapted from Gritsevskyi and Nakicenovic, 2000. 38Copyright Jonathan Koomey 2014
  • 39. Decanio concludes… “The application of general equilibrium analysis to climate policy has produced a kind of specious precision, a situation in which the assumptions of the analysts masquerade as results that are solidly grounded in theory and the data. This leads to a tremendous amount of confusion and mischief, not least of which is the notion that although the physical science of the climate is plagued by uncertainties, it is possible to know with a high degree of certainty just what the economic consequences of alternative policy actions will be.” (italics in original) 39Copyright Jonathan Koomey 2014
  • 40. Fossil fuel resources are huge 40Source: Table A-1 from Cold Cash, Cool Climate, mainly using GEA data 2012 Note: Current annual global primary energy use is 0.6 ZJ (1 ZJ = 1000 EJ or 10e21 J), which is about 30 TW. Copyright Jonathan Koomey 2014
  • 41. Brainstorming exercise If computing efficiency continues to improve at historic rates, it will increase by a factor of 100 over the next decade, with consequent improvements in mobile computing, sensors, and controls. What new applications and products could become possible with such rapid efficiency improvements 10 years hence? What other innovations would need to emerge to enable the use of more efficient computing ? Copyright Jonathan Koomey 2014 41