ECONOMICS AT THE END OF THE END OF HISTORY:

NAVIGATING THE ENERGY TRANSITION

PROF CALVIN JONESCARDIFF BUSINESS SCHOOLFRIDAY WORKSHOP 02.11.02012

USUAL CAVEAT

No paper, sorry, very much a work in progress.

HYPOTHESIS(1) Global growth may be slowing due to

attainment of a Solow steady state of per-capita-income driven by diminishing returns to energy-generating fossilised natural capital

(2) Transition to non-exhaustible energy inputs will (especially in the West) be sub-optimal

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LONG RUN GDP GROWTH

Maddison quoted in Van de Berg,

SKETCHED MODEL: EXTENDED SOLOWSolow (1956) growth model posits 2 factors, L , K with constant returns to scale and diminishing returns to any one factor

Growth is series of ‘one-offs’ achieved only via:

• labour augmenting improvements to capital stock (Arrow, Romer, Lucas et al)

• increase in savings ratio

• Reduction in depreciation rate of capital

6

SOLOW GROWTH EQUILIBRIUMTo right of k*, δk > s hence amount of capital per worker diminishes to k*

To left of k*, δk < s hence capital accumulates to k*

There is a stable equilibrium capital stock and income per worker level at k* y*

e.g. decrease in depreciation δk increases PCY to y’

y = β(k) α

s = σβ(k) α

y

k

δk

y*

k* k2k1

δk’

k’

y’

EXTENDED SOLOW*Consider extension of Solow with new factor of production E representing exergy – amount of energy available for useful workCobb-Douglas; Y = KαLφ where α+φ=1

becomes:

Extended Cobb-Douglas; Y = KαLφEψ where α+φ+ψ=1

Allow K & L to be infinitely extendable in tandem and hence collapse term to

y = β(kl) αφ

*n.b. I depreciate Hotelling/Hartwick/Solow papers that equate rents on exhaustible resources to stock values due to informational & other imperfections discussed later; see Krautkraemer, 1998

y = β(kl) αφy

kl

EXTENDED SOLOW*Implication that growth will experience diminishing returns to increasing inputs of K and L if available system energy, E is fixed

Notes: • We do not distinguish here between fossil and renewably generated energy

• Energy efficiency developments increase exergy hence shift function up – but themselves experience diminishing returns

y = β(kl) αφ

y

kl

DIMINISHING RETURNS TO ENERGY EFFICIENCY

EXERGY LEVELS?Response to this analysis might contend exergy sufficiently available such that does not constitute a drag on economic growth – hence increasing factor accumulation + technical progress sufficient to allow (but not ensure) growth

Abundant energy sources waiting to be tapped when price justifies exploitation (see work of Maugeri & Yergin especially)

Any signals here?

EVIDENCE

SUPPLY CONSTRAINTS?

NEXT?Fatih Birol, Chief Economist of the International Energy Agency, September 2010 interviewed on BBC One Planet

"It is definitely depressing, more than depressing, I would say alarming, which is what we try to do, to alarm the governments. … even if we were to assume the next 20 years global oil demand growth was flat, no growth at all, in order to compensate the decline in the existing fields we have to increase the production about 45m bpd just to stay where we are in 20 years, which means to find and develop four new Saudi Arabias, and this is a major challenge.

INTIMATIONS?Lack of positive supply response from conventional oil since 2005 suggests limitation in annually available exergy from that source – for technical/cost of production reasons

Substitution effects – nuclear, unconventional oil (tar sands), biofuels, wind… and in short term gas

All are an order of magnitude more expensive than ‘easy’ Saudi oil at $8 - $12 at barrelhead (Simmons, 2006) and with little prospect of scale economies to to techniques of extraction –cheapest is boiling Western Canada @ $80/ba (see Nelder)

NOT JUST PRICE ISSUE - EROEIEnergy Return on Energy Invested – technical coefficient dividing energy generated by energy used in discovery, production & distribution processes over life cycle

OIL AND GROWTHEven if global exergy can be increased EROEI implies far higher cost of energy

This either in terms of $ - e.g. OECD, 2012 estimate real price of oil doubles to 2020 (accounting for new discovery & substitution)

Or in terms of opportunity cost – ever larger proportion of productive factors dedicated to chasing ever more marginal energy sources

Additional problem here – exergy is also an input for application of K and L – it is an ‘ur-commodity’ see Schumacher)

oil comprises around a third of global primary energy use, and 95% of global transport. Oil-derived products, including plastics are central inputs to wide range of non energy products

Dependence of global agriculture on oil for mechanised production, pesticides, inorganic fertilisers and distribution means in US & Europe, one calorie of food requires 7-10 calories of fossil fuel to produce Heller and. Keoleian (2000)

Manufacture of a passenger vehicle cf. 22-29 Gj of energy, cf. 3.75-5 barrels of oil (Weiss et al 2003, MIT)

Hence ↑ energy cost implies ↓ in productivity of inputs (opportunity cost of exergy)

OIL AND GROWTH

OIL AND GROWTH

y = β(kl) αφy

kl

Increasing production cost (exergy terms) & substitution to energy sector cuts factor levels in productive sector

Hence leftward shift in kl and downward pressure on PCY

Can we hope for offsetting improvements in energy or non-energy technology?

‘… the Stone Age ended, not because we ran out of stones. It’s ideas, it’s innovation, it’s technology that will end the Age of Oil before we run out of oil.’

Sears, 2010; see also Deutsche Bank http://www.ted.com/talks/lang/en/richard_sears_planning_for_the_end_of_oil.html

PROBLEMS & SUB-OPTIMAL TRANSITIONS

Formal (western) economics not used to explaining transitions to ‘worse’ factors!

Newcomen’s Coal engine 1712.Adam Smith born 1723

Batteries must improve carrying capacity by a factor of 50 to match oil – but fundamental chemical constraints & DMR

NETWORK/SUNK COSTS

e.g. transportation:

- electrification: battery cars. smart 2-way grid. high power charging points. 2 x generating capacity (MacKay 2009)?

- hydrogen: fuel cell cars. storage tanks & tankers or pipelines.

- gas: LPG / CNG cars. below ground (?) pressurised storage (but not hydrogen-substitutable). definite shelf life.

AND OF COURSE IN EXPERIMENTAL TRANSITION, DEPRECIATION RATES LIKELY TO INCREASE?

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y = β(k) α

s = σβ(k) α

y

k

δk

y*

k*k1

δk’

k’

y’

↓

MORAL HAZARD / PRINCIPAL AGENT incentives to stifle information flow on reserves (or over-state) from within industry / producer-nations to shore up demand & lock-in (see Lewis, 2010 for case study of US finance)?

NON-ECONOMIC (OR JUST NON-) DISTRIBUTION OF EXERGYSino-supplier joint ventures (nascent) hint at future geo-political not price based distribution? (Not that the West will afford it anyway!)

EQUITY & GEOGRAPHY

0.0

20.0

40.0

60.0

80.0

100.0

120.0

140.0

160.0

0.00

0.50

1.00

1.50

2.00

2.50

Residence Based GVA/Head 20061

Total final energy consumption (kWh)/ £GVA

FINAL THOUGHTS: ENERGY CAPTURE 14,000BC – 2000ADM

orris (2010) Why the W

est Rules: For N

ow

ENERGY CAPTURE: 14,000BC – 2000ADM

orris (2010) Why the W

est Rules: For N

ow

ENERGY CAPTURE: 14,000BC – 2000ADM

orris (2010) Why the W

est Rules: For N

ow

CONCLUSIONSIssue at hand is not oil ‘running out’

But rather extent to which limitations in supply growth of fuels (& technically driven increased marginal cost) will influence extent of economic growth – or indeed force the continuation of de-growth (in West)

Very imperfect competition in energy markets unlikely to help smooth transition to non-exhaustible fuels

Significant social tensions evident (Mexico city food riots, fuel strike, real-wage effects of increased commuting cost, fuel poverty) suggest socio-political resilience may be more important than economic/factor price considerations in driving transition

THANKS FOR LISTENING.

Prof. Calvin Jones

Cardiff Business School

jonesc24@cf.ac.uk

“It might be said that energy is for the mechanical world what consciousness is for the human world. If energy fails, everything fails.”

e.f. schumachersmall is beautiful p99