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Boulding's 1966 paper on the economics of spaceship Earth established the framework for ecological economics and an understanding of economic growth. In ecological economics, economies are conceptualized as open subsystems of the closed biosphere and are subject to biophysical laws and constraints. Economic growth measured as an increase in real gross domestic product (GDP) has generally been associated with increases in the use of energy and materials and the generation of wastes. Scale, composition, and technology are the proximate determinants of environmental impacts. They are often reduced to two: scale (GDP) and intensity (impact per unit GDP). New work described in this paper defines “green” growth as intensity that declines faster than scale increases. Similarly, “brown” growth occurs when intensity declines more slowly than increases in scale, and “black” growth happens when both scale and intensity increase. These concepts are then related to the environmental Kuznets curve, which can be understood as a transition from brown to green growth. Ecological economics provides a macroperspective on economic growth. It offers broad policy principles, and it challenges the primacy of economic growth as a policy objective, but many important questions remain. [ABSTRACT FROM AUTHOR]

Small island developing States ( SIDS) have narrow resource bases and are usually extremely reliant on fossil fuel based energy for transport and electricity generation. These island economies are thus particularly vulnerable to the impacts of peak oil and also to climate change, impacts which are likely to not only hamper economic development but also adversely affect the quality of life of local inhabitants. In order to reduce the vulnerability of SIDS to peak oil, an urgent transition to renewable sources of energy is necessary. This paper propounds that the reform of power sector that took place in Caribbean and Pacific SIDS (particularly between 1970 and 2000) should have been viewed as an opportunity to re-orient power producers away from the proclivity to utilise conventional fossil fuel uses. Reasons why reform measures did not result in a substantive transition are put forward. Moreover, recommendations towards facilitating a transition to renewable energy in the power sector through future reforms are proposed. [ABSTRACT FROM AUTHOR]