The impact of higher oil prices on Southern African countries
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The impact of higher oil prices on Southern African countries JC Nkomo Energy Research Centre, University of Cape Town Abstract Southern Africa. We do so by first providing a back- In determining the magnitude of oil shocks to the ground about the energy and development in these economies of Southern Africa, it is essential that we economies, look at international crude oil price examine the various components of vulnerability, as movements, and then determine Southern Africa’s well as the crude oil price movements and the rela- energy and oil intensities, and oil dependence tionship between energy and development. aspects. Oil price shocks increase the total import Because energy consumers and producers are con- bill largely because of the huge increase in the cost strained by their energy consuming appliances of oil and petroleum products. The International which are fixed n the short-run, thus making it diffi- Energy Outlook (2004 p5, 25) argues that the link cult to shift to less oil intensive means of production between energy consumption and economic in response to higher oil prices, oil price shocks growth are closely correlated in developing coun- increase the total import bill for a country largely tries, with energy demand growth tending to track because of the huge increase in the cost of oil and the rate of economic expansion. Bacon and Mattar petroleum products. Low-income countries and (p1 2005) also report that low-income countries poorer households tend to suffer the largest impact and poorer households in developing countries suf- from oil price rise. fer the largest impact from oil price rise. The organization of this paper is as follows. The Keywords: vulnerability, oil intensities, price shocks, first section looks at energy and development to oil dependence understand the economies being discussed. This is followed by a brief discussion on the price of crude oil. We then show in the third section, the method- ology for looking at vulnerability and then discuss Introduction our findings. The Southern African countries we Most Southern African countries are completely consider all fall within the Southern African depended on imported oil as a primary energy Development Community (SADC). For the most source and are therefore highly vulnerable to oil part, our observations range from 1994, when price shocks. The oil price increases have significant South Africa won its first democratic elections, to impacts on the economy’s level of real gross domes- 2003 as determined by data availability. tic product (GDP) and economic performance. The oil price increases reduce the national output, Energy and development change the structure of spending and production Southern African economies and shifts the economy to a lower economic growth The individual economies of Southern African path. This affects the rate of inflation and, at the countries are structurally diverse, their economic same time, alters the structure of relative prices, and performance is mixed, and they are at different the economy’s import bills are strained adding to stages of development. South Africa has the most the adverse shift in their terms of trade. The actual developed, diversified and self-driven economy, impact of oil changes varies markedly by country, with the gross domestic product (GDP) that is more and depends on, at least, two factors: the degree to than double of the other Southern African countries which they are net oil importers and the energy and combined (Figure 1). For most of the economies, oil intensities of their economies. the agricultural contribution to GDP dominates The purpose of this study is to determine the other sectors. Oil production is Angola’s backbone magnitude of oil price shocks to the economies of of the economy, and the upstream oil industry con- 10 Journal of Energy in Southern Africa • Vol 17 No 1 • February 2006
tributes about 50% to GDP and is the major source Botswana, Namibia, Swaziland and Lesotho. High of the country’s foreign exchange. Botswana’s oil prices have therefore added to the low growth export sector is dominated by diamond mining, and prospects of these national economies. the government is aiming to diversify the export base and reduce the vulnerability of relying on dia- Energy and GDP monds. Persistent macroeconomic instability and Even given the paucity of oil resource endowment, poor links between the capital intensive oil sector the presence or absence of refining capacity in any and the rest of the economy in Angola, inappropri- of the countries is crucial. Refineries are concentrat- ate policy mix in Zimbabwe, and civil conflict in the ed in South Africa with a refining capacity of 708 DRC have adversely affected the economic per- 000 billion barrels per day, with other refineries in formance of these countries. Economic growth is Angola (39 000 billion barrels per day), Tanzania attributed to restructuring in Tanzania, the diversifi- (14 000 billion barrels per day) and Zambia (23 cation of the economy in Zambia and Malawi, the 750 billion barrels per day). South Africa exports investment in the Lesotho water project and higher some of its refinery output to Botswana, Lesotho, manufacturing production in Lesotho, and con- Swaziland and Namibia. Most of Malawi’s fuel struction activities in Mozambique. imports are supplied via Tanzanian and South Low growth rates were experienced in the early African ports. Pipelines transport crude oil from 1990s as a result of the region-wide drought, the Tanzania to Zambia and from Mozambique to ‘Asian crisis’ resulting in depressed global demand, Zimbabwe. Supply is thus not only vulnerable to and low international commodity prices. Civil con- supply interruption by oil producing countries and flict in the DRC explains negative GDP growth rates high crude oil prices, but to the political stability of from 1996 to 2000. While all countries had positive transit countries as well. But the vulnerability of growth rates in 2003, Botswana, Mozambique and these landlocked countries largely depends on the Tanzania achieved growth rates above 5% largely degree of their dependence on oil imports and the because of sound economic management. Then is oil intensity of their economies. the problem of inflation. The South African The South African economy dominates the Customs Union, consisting of countries which peg region’s consumption of both petroleum and total their currencies to the South African Rand, experi- energy (Figure 2). While it can be said that energy enced sharp falls in average consumer price infla- consumption is an indicator of industrial progress tion as the South African Rand continued to firm and the standard of living for its people, it is equal- against major currencies. The annual inflation rate ly important to realise that rapid economic growth of 432% in Zimbabwe (IMF p22 2004) is attributed requires increases in the consumption of commer- to demand and supply imbalances in the economy cial energy. as well as a range of cost push factors. Estimates The relationship between countries at the most further reveal that HIV/AIDS is reducing welfare aggregated level (see Figure 3) is an almost perfect and depressing economic growth by up to 1.5%, positive correlation (R2 = 0.99) between energy with the worst affected countries as South Africa, consumption and output or income or growth (as 140 120 Billions of 2000 US $ 100 80 60 40 20 0 Angola Congo Malawi Namibia Swaziland Zimbabwe (Kinshasa) Botswana Lesotho Mozambique South Africa Tanzania Note: Gross domestic product using market exchange rates per country, 2003 Figure 1: Gross domestic product per country, 2003 Source: Data based on IEA, 2003 Journal of Energy in Southern Africa • Vol 17 No 1 • February 2006 11
500 Thousands of barrels per day 400 300 200 100 0 Angola Congo Malawi Namibia Swaziland Zimbabwe (Kinshasa) Botswana Lesotho Mozambique South Africa Tanzania Figure 2: Petroleum consumption, 2003 Source: Data based on IEA, 2003 measured by GDP). There is, however, ambiguous and growth indicates that economic activity is seri- about the direction of causation, leaving open ously constrained without energy. To the extent that whether economic growth is a function of having economic growth, with the jobs and income and more energy, or whether energy arises from development it creates, depends on price and reli- increased economic growth. We argue, however, able supplies of energy, and since energy consum- that energy use while being a necessary input for ing technology is fixed in the short-run, oil price economic growth is also a function for growth. The hikes are bound to have an effect on national out- strength of this relationship varies among countries put and other macroeconomic variables. and their stages of economic development. We also observe that the estimates of South Africa (the Development country with the highest output, GDP, R2 = 0.83) The biggest challenge facing Southern African and Lesotho (with the lowest output, GDP, R2 = countries is to increase both development and eco- 0.51), show that income elasticity of energy con- nomic growth. These factors are linked with energy sumption 1 50%) for most countries, implying a much skewed distribution of income in Southern African economies. Even though the coefficients for Tanzania and Mozambique are below 50%, Figure 3: Energy and GDP in 2003 Mozambique is among those countries with the Source: Data based on IEA, 2003 worst levels of deprivation. The levels of poverty, 12 Journal of Energy in Southern Africa • Vol 17 No 1 • February 2006
Table 1: Development indicators, 2003 Figures compiled from the Human Development Report (2005) and IEA (2004) Country Human develop- Gini Human poverty Population below Total external ment index1 coefficient index income poverty debt (in % (%) (%) (HPI – 1)2 (%) line US$2 a day of GDP) 1990- 2003 Angola 44.5 41.5 37.2 Botswana 56.5 63.0 48.4 50.1 17.8 Lesotho 49.7 63.2 47.6 56.1 47.0 Malawi 40.4 50.3 43.4 76.1 165.8 DRC 38.5 - 41.4 - 187.4 Mozambique 37.9 39.6 49.1 78.4 121.7 Namibia 62.7 70.7 33.0 55.8 2.3 South Africa 65.8 57.8 30.9 34.1 23.2 Swaziland 49.8 60.9 52.9 - 28.2 Tanzania 41.8 38.2 35.8 59.7 59.5 Zambia 39.4 52.6 46.4 87.4 129.3 Zimbabwe 50.5 56.8 45.9 83.0 55.3 1. HDI is a composite index of three measurable dimensions of human development: a decent standard of living (meas- ured by real GDP per capita), education attainment (adult literacy and enrolment rates) and living a long healthy life (life expectancy at birth). 2. HPI-1 variables used are: the percentage of people expected to die before age 40; the percentage of adults who are illiterate; and deprivation in overall economic provisioning-public and private-reflected by the percentage of people without access to health services and safe water and the percentage of underweight children under five. measured by the Human Poverty Index (HPI-1) to declining reliance on debt-creating flows and debt focus on the proportion of people below a thresh- forgiveness under the Enhanced Heavily Indebted old level of basic human dimensions of human Poor Countries (HIPC) initiative. development, show Swaziland, Mozambique, and Botswana as the worst affected in 2003. When we Crude oil price movements take into account an extremely contentious meas- We need to identify the ultimate movers and shak- ure of US$2 a day (measured in purchasing power ers behind crude oil price movements. Analysis of parity terms) as a poverty line, Mozambique, crude oil price movements on a global level can be Zambia and Zimbabwe become the worst affected. divided into three sub-periods, with different influ- Poor households are thus forced to rely on non- ences on price determination and pricing outcomes. commercial sources of energy. During the first period, international oil companies The debt burden Southern African countries fixed the price of crude oil, and the period was face is a major impediment to growth and econom- characterized by occasional price shocks rather than ic transformation, since it diverts scarce resources, continuous price volatility. This price fixing lasted retards achievement of sustainable development, until 1974 when OPEC producers took over the and inhibits productive investment. As Davidson role of fixing the reference price, and maintained and Sokona point out (2005 p16), a significant this role until 1986. Since 1986, the reference price amount of debt was incurred for both development of crude oil in international trade has been deter- and maintenance of the power sector, and repay- mined in New York and London in the futures ment of energy loans in financially stronger curren- exchanges for WTI and Brent, respectively. cies pose a hardship since energy services are paid Futures prices are sensitive to expectations for in unstable local currencies. Together with exter- about developments on supply and demand. These nal factors such as the unfavourable terms of trade, expectations are fuelled by political and economic low export growth and high external volatility, crude factors. Mabro (2004) argues that once stability in oil price hikes worsen the debt situation of Southern oil producing countries is under threat, this African countries, and limits resources that can be unnerves the market and fuels expectations, with devoted to poverty alleviation or to meet the fears of future development among crude oil traders Millennium Development Goals. Fortunately, the causing uneasiness about security of supplies. debt burden is expected to improve because of There has also been concern about production Journal of Energy in Southern Africa • Vol 17 No 1 • February 2006 13
being constrained by available capacity and geopo- economy and increases in non-OPEC production. litical developments as well as reliability of security Soon afterwards, prices rose to the US$ 25 range, of supplies particularly given the volatility of the oil and hovered above US$40 per barrel in 2004 as a rich Middle East countries. At the same time, rapid result of the continued fall of the US dollar, the growth in emerging markets, particularly of China, political tension in the Middle East, the high and the strength of demand from other consumer demand for crude oil by China, and uncertainly countries have been key factors to rising prices. about the future of Yukos, the Russian producer. The influence of OPEC on price levels cannot be Bacon and Mattar (2005 p9) use 2003 as a ref- discounted. OPEC influences price levels and erence period, and estimate that the average price movements by sending signals to futures markets of Brent in recent years rose by 15% in 2003 to US$ where reference prices are determined. Announce- 28.8, and by 33% above the 2003 price in 2004, ments about production policy are now widely rec- ultimately by an average of 30% from 2004 to mid ognized as OPEC's signalling device. Decisions on 2005. The price rise from 2003 to mid-2005 was quota reduction, for example, are taken as an indi- 72% (from US$28.8 to US$ 49.5), and increased cator of OPEC's worry about bearish sentiments in above US$ 55 after mid-2005. the market, which may lead prices to fall. Decisions to increase production, on the other hand, are an expression of OPEC's uneasiness about the high The impact of oil price shocks price levels attained. On the whole, crude oil prices Impact of higher prices behave like other commodities in the market, with Consumers and energy-using producers suffer the wide price swings in cases of shortage or oversupply. worst impact from oil price increases than do increases of other commodities for several reasons. 45 As the prices rise, consumer and producers have lit- tle flexibility in reducing their use of oil in the con- 40 WTI sumption basket and as a factor of production, or 35 even to substitute between other alternative fuels. US dollars per barrel Brent This is because energy consuming appliances tend 30 to be fixed in the short run, thus limiting the poten- 25 tial for interfuel substitution. The result is that con- sumers, given their preferences and willingness to 20 substitute between energy and other goods, and producers, given the different characteristics of pro- 15 duction and the extent to which oil can be used in 10 different proportions with other energy and non- energy factors, cannot easily change their con- 5 sumption pattern in the short run or shift to less oil 0 intensive means of production in response to changes in the price of oil. In the transportation sec- 2001 1995 1996 1997 1998 1999 2000 2002 2003 2004 2005 tor, demand for oil varies with different forms of transportation so that the impact of price shocks Figure 4: Brent and WTI daily prices depends on the ability to adapt to particular forms 1998 to 2005 of transportation to make it more efficient. The flex- ibility in the use of oil or energy in the long run Taking into account all these influences on crude depends on a myriad of other macroeconomic vari- oil prices, Figure 4 shows a positive nonlinear price ables such as employment, economic growth and trend from 1995 to early 2005 and with the Brent so forth. Our aggregative analysis conceals all these price closely tracking WTI. The strong US economy factors but rather provides an on-the-spot impact of and the booming Asian Pacific region contributed to price shocks. price increases that extended into 1997. Decline in To determine the magnitude of the oil price rapid growth of the Asian economies in 1998 as shock, we follow the Bacon and Mattar (2005) well as lower consumption and higher OPEC pro- methodology, and let duction led to a downward spiral in prices. Prices recovered in 1999 in response to: (i) OPEC restrict- OV = (ML * PL) /GDP (1) ing crude oil production (although not all the quo- = PL * (ML/∑Lu) * (Lu/∑Eu) * (Eu/GDP) (2) tas were observed); (ii) Asian growing oil demand signifying recovery from crisis; and (iii) the shrinking Where: non-OPEC production. Prices continued to rise in OV = Oil vulnerability 2000 and then plummeted in November 2001 fol- ML = Volume of net oil imports (oil con- lowing successive quota increases, a weakening US sumption minus oil production) 14 Journal of Energy in Southern Africa • Vol 17 No 1 • February 2006
GDP = Gross domestic product with an average oil share above 60% and with the PL = Price of oil highest vulnerability (0.046 in Table 3). As sum- Lu = Total oil use marised in Table 1, Namibia also has the high lev- Eu = Total energy use els of inequality, very low HPI-I and, like other Southern African states, with a serious challenge of Expression (1) can be decomposed to some com- alleviating poverty. Although the oil share for ponents of oil vulnerability that allow us to estimate Angola is high, Angola is a net crude oil exporter. the following: ML/Lu for oil import dependence, Other main energy sources in Namibia are Lu/Eu for dependence of oil as an oil resource, and hydropower and biomass. Dependence is also high Eu/GDP for energy intensity. Furthermore, we for the economies of Botswana (46%), Malawi determine oil intensity using the ratio Lu/GDP. Let (45%) and Lesotho (44%), which also suffer from us consider next the results on oil vulnerabilities high levels of poverty, deprivation and inequality these components yield. (see Table 1). We did not estimate cross price elasticities Oil import dependence between oil and other energy inputs to establish A major factor explaining high oil vulnerability is interfuel substitution possibilities, mainly because of the extreme dependence of Southern African coun- the highly aggregated nature of our data. It would tries on imported oil. Except for Angola and the be useful, for example, to examine the characteris- DRC, all the countries are highly exposed to vul- tics of demand across the various sectors of the nerability to oil shocks with estimated ratios ML/Lu economy, obviously expected to differ, and to illus- = 1, indicating that they are 100% reliant on trate the level of taxes/subsidies that would be imported crude oil. Our data sources show that required to encourage ‘fuel-switching’. However, Angola and the DRC are net exporters of crude oil, we observe that the oil shares and the trend lines and that between 1998 and 2003, South Africa has (Table 2) for the rest of the countries are falling and on average been importing 95% of its crude oil almost constant (flat) for South Africa. While the requirements. This heavy dependence or reliance trend lines for Botswana and Namibia as well as for on imported oil is coupled by other country specif- the net exporting countries are positive, it is fluctu- ic factors that reveal impact of the oil shock and the ating and almost constant for South Africa, and limited resources for the countries to cope with it. negative for the rest of the other countries. This can From Table 1, most of Southern Africa suffers from be attributed to fuel substitution taking place. high external debts, high levels of human depriva- Botswana records the least level of vulnerability and tion (see HPI-1 index) and income inequality rising oil share in its energy mix (Tables 3 and 2), (based on Gini coefficients), and that almost all likely because of the diversification thrust as it pur- these countries have a significant proportion of their sues its development policies. population (between 50 and 87%) below the poverty datum line of US $2 a day. These in turn Energy intensity, (Lu/GDP, Eu/GDP) imply that the low levels of economic growth in Energy and oil intensities are important factors that these countries are further constrained to accelerate explain oil vulnerability. Energy intensity is the development and to achieve significant poverty energy use per dollar of GDP, and is also the reduction levels. amount of energy needed to support economic activity. Simply, it is the cost of converting energy Dependence on oil as a resource, Lu/Eu, and into GDP, so that using less energy to produce the the impact of an oil shock same product reduces the intensity. Some analysts The variable Lu/Eu defines the share of oil in the argue that energy intensity is the inverse of energy total energy mix, and is a useful factor in explaining efficiency, so that any decline in energy intensity oil vulnerability. The expression Eu includes both can be regarded as a proxy for efficient improve- the commercial and non-commercial sources of ments. Validating this assertion would require infor- energy. A conceptual problem that arises with the mation on technology for the various sectors in dif- data for Lu/Eu is that this expression is based on ferent countries which, unfortunately, is concealed physical units rather than on expenditure shares. in the highly aggregated nature of currently avail- The problem is minimised by expressing depend- able data. ence in terms of expenditure values as Lu * PL /Eu * There is consensus in literature that low energy PL. As PL cancels out, we get the same results from intensity (meaning lower costs of converting energy the two expressions. into GDP) keeps vulnerability down and, alterna- The results in Table 2 show that oil shares as a tively, that increases in energy intensity leads to an proportion of total energy consumed per country increase in vulnerability to oil shocks. With refer- have been falling in most countries, but rising in ence to Table 4, this implies that the higher the Angola, Botswana and Namibia. We deduce that energy intensity the more vulnerable the country is the impact of oil price shocks is severe for Namibia to oil shocks. Similarly, low energy intensity helps to Journal of Energy in Southern Africa • Vol 17 No 1 • February 2006 15
Table 2: Oil fuel dependence Country Lu/Eu (0 < x < 1) Lu/Eu Lu/Eu Average 2003 Fitted trend line R2 1994 – 2003 Angola 0.68 0.71 Rising 0.54 Botswana 0.44 0.46 Rising 0.51 DRC 0.35 0.21 Falling 0.8 Lesotho 0.60 0.44 Falling 0.76 Malawi 0.50 0.45 Falling 0.83 Mozambique 0.40 0.14 Falls sharply 0.85 Namibia1 0.62 0.64 Rising 0.59 South Africa 0.21 0.20 Constant (flat) 0.007 Swaziland 0.40 0.33 Falling 0.87 Tanzania 0.62 0.59 Falling 0.67 Zambia 0.23 0.23 Falling 0.15 Zimbabwe 0.27 0.24 Falling 0.57 Note: 1 data from 1995 to 2003 Table 3: Estimated size of shock (as a percentage of 2003 GDP) Source: Calculations based on IEA data, 2003 Country Oil Effect of average Effect of average 2003 to vulnerability price rise from 2003 price rise from 2004 mid-2005 to 2004 (33%) to mid-2005 (72%) cumulative impact Angola -0.779 -25.387 -55.389 -80.775 Botswana 0.009 0.312 0.681 0.993 DRC -0.009 -0.288 -0.628 -0.916 Lesotho 0.015 0.507 1.106 1.613 Malawi 0.035 1.145 2.497 3.642 Mozambique 0.023 0.754 1.645 2.399 Namibia 0.046 1.532 3.343 4.875 South Africa 0.034 1.138 2.483 3.622 Swaziland 0.025 0.826 1.802 2.628 Tanzania 0.022 0.710 1.548 2.258 Zimbabwe 0.021 0.687 1.498 2.185 Note: Angola and the DRC are net oil exporters, hence the negative results shown keep vulnerability down. The pattern of energy 1998 to 2002, and then picks up in 2003. intensity growth overtime in Southern Africa is There are two main problems with these energy mixed, with some countries exhibiting a positive intensity results. Firstly, they are at an aggregate growth trend (with Mozambique, Namibia and level, with heterogeneous output. Secondly, the Lesotho leading) and a negative trend experienced large use of biomass in different countries is largely by six countries. Countries with a negative trend uncaptured in GDP calculations. line show the following different percentage growth Since most countries are completely dependent patterns in energy intensity: a constant negative on imported oil (that is, ML/Lu = 1), our results for trend for Congo (Kinshasa); a tendency for the data oil intensity are identical to those of oil vulnerability series either to fluctuate constantly (Botswana) or reported in Table 3. Namibia, has the highest oil fall, then rise from 1998 or 1999 (Angola, Lesotho, intensity of GDP, and is more vulnerable to oil price Malawi, Mozambique, Namibia, Swaziland and increases. The higher the oil intensity of GDP, the Tanzania), and for the data series to rise in 1998 more vulnerable the economy to oil price increases, and then maintain a negative trend thereafter and the countries with a high oil/GDP ratio are (Zimbabwe). South Africa data series falls from harder hit than the others. While Dargays (1990 p 16 Journal of Energy in Southern Africa • Vol 17 No 1 • February 2006
15) contends that the oil intensity of GDP rises from factors to be at play for the various countries, there- low to middle income, and being lowest for coun- by yielding different patterns of intensity results. tries with highest incomes, our results do not quite Undoubtedly, the risk of reducing energy price confirm this finding. Rather, we agree with Bacon volatility implies taking into account benefits of and Mattar (2005) about the lack of a significant reducing this exposure by measures such as energy correlation between changes in oil intensity and the efficiency, structural change, choices about energy growth in GDP per capita. However, we expect investment and through strategic petroleum improved data to reflect increasing oil intensity as reserves. This, at least, guarantees that any oil price modern commercial fuels substitute traditional fuels shock would cause less economic disruption, rela- in the household sector, and as transportation, eco- tive to GDP. nomic growth and development continue. Challenges Table 4: Energy intensities The challenge Southern African countries face is to Source: Calculations based on IEA data, 2003 reduce dependence on imported oil while also meeting the challenge of development and eco- Country Energy intens- R2 [Υ =α Energy nomic growth. Oil and energy intensity through a ity for 2003 +βΧ + βΧ2 intensity variety of options. A very useful option is to disag- (Btu/ 2000 (1994 to trend gregate the data by sector, estimate the demand US$ using 2003)] line pattern of each sector and determine the cross-price market exchange Υ = time elasticities of substitution for the different energy rates) Χ = data types and sectors. This gives useful information on Angola 11 489 0.69 Falling the degree of substitution possibilities between oil Botswana 9 014 0.49 Falling and other energy types using fiscal policy and other Lesotho 6 882 0.70 Rising financial incentives. The fiscal tool can also be used to encourage energy conservation, to promote tran- Malawi 14 836 0.90 Falling sition to a lower energy intensity mix of economic DRC 4 861 0.80 Falling activities, and to encourage an optimal fuel mix, Mozambique 32 820 0.92 Rising depending on the distributional impact of the poli- Namibia 13 924 0.81 Rising cy measure taken. Other demand management South Africa 35 348 0.52 Falling strategies involve improved energy end-use effi- ciency in industry, transportation and buildings. Swaziland 14 349 0.60 Rising There is also a challenge for energy policy for these Tanzania 7 208 0.62 Rising countries in terms of exploiting renewables. Zimbabwe 16 693 0.64 Falling But all these likely cases should be pursued through a combination of incentives, investments, A number of factors explain why some countries and other measures that affect choices made with have different energy intensity patterns. Firstly, the available array of technological options and energy prices are a major influence on energy use through research and development. and therefore on energy intensity. Energy prices vary between countries depending on energy con- References suming technology, availability of fuel and regulato- Bacon, R. and Mattar, A. 2005. The Vulnerability of ry regimes in place. Secondly, as in Bernstein et al African Countries to Oil Price Shocks: Major Factors (2003 p 14), capital investment and new construc- and Policy Options. ESMAP. Report 308/5. tions tend to have lower energy intensity because Bernstein, M. Fonkych, K., Loeb, S and Loughran, D. the new infrastructure is usually more energy effi- 2003. State-Level Changes in Energy Intensity and cient. Thirdly, the way energy types are mixed to Their National Implications. produce output drives the demand for energy. The Dargay, J. 1990. Oil demand: Dependence or Flexibility? structure and the composition of economic output Oxford Institute for Energy Studies. among the countries differ, thus affecting energy Davidson, O. and Sokona, Y. 2002. Think bigger act intensity. Fourthly, changes in demographic factors faster. EDRC/ENDA. influence energy use and have an impact on ener- IMF (International Monetary Fund) 2004. Sub-Saharan gy intensity. For example employment and income Africa Regional Economic Outlook. International growth lead to increased energy consuming appli- Monetary Fund 2004. www.imf.org/external/pubs/ft/ ances. Fifthly, technological change and penetration afr/reo/2004/eng/02/pdf/reo1004.pdf. of modern appliances can either make energy use International Energy Outlook 2004. Energy Information more efficient or increase energy intensity for some Administration/International Energy Outlook 2004. end uses. But expenditure on new equipment to www.eia.doe.gov/oiaf/ieo/index.html. replace old capital stock is often more efficient than the equipment being replaced. We expect all these Received: 30 November 2005 Journal of Energy in Southern Africa • Vol 17 No 1 • February 2006 17
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