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Driven by a rapid development of the so-called ‘open innovation’ paradigm, previous studies have provided broad evidence of the positive effects of external knowledge sources on innovation. Yet, little is known about the impact of external knowledge sources on innovative activities in the renewable energy sector. Based on an analysis of original survey results involving R&D organisations, we examine the role of different knowledge sourcing strategies for innovation in two technology fields, namely solar and wind power. The link between external knowledge sourcing and innovation performance is found to depend on sourcing strategies and technology fields. Our results contribute to the evaluation of strategy design by showing that solar power innovation benefits from a broad search strategy drawing on a large number of external knowledge sources, while wind power innovation tends to thrive through intensive use of a more limited number of external sources. We derive implications for innovation and energy policy.

This paper studies the effect of endogenous technical change and international technology spillovers on carbon leakage. It is well known that a unilateral CO2 abatement policy in one region may cause CO2 emissions to increase in non-abating regions because of the relocation of CO2-intensive firms and because of energy market effects. If, however, the CO2 mitigation policy induces energy-saving technological innovation in the home region and this innovation can freely spill-over to energy users abroad, carbon leakage may be offset by induced efficiency gains in foreign firms. In this paper we develop a simple mathematical model of carbon leakage and technological spillovers and perform numerical simulations with an adjusted CGE model to illustrate the potential importance of international technology spillovers. We show that carbon leakage can become negative at moderate levels of technology spillover.

Lack of access to modern energy services is a daunting development challenge in sub-Saharan Africa. The promotion of renewable energy technologies (RETs) by development partners and government organizations is one way of meeting this challenge. Despite substantial investment of effort, the diffusion of RETs in Africa has been disappointing, leading to a search for more effective policies and approaches. In this paper, we discuss the role of technological innovation system (TIS) in fostering technology diffusion. We argue that the functional build up of TIS shapes technology diffusion levels in least-developed country settings. We report a comparative analysis of the biogas TIS in Kenya and Rwanda by applying the so-called the 'functions approach to innovation systems'. On this preliminary evidence, we argue that patterns of accumulation of TIS functions may determine rates of technology diffusion. We argue that to ensure accelerated diffusion of RETs, policy attention should be paid to improving the functional performance of TIS.

This article critically analyzes the environmental economics paradigm of David Pearce and Robert Kerry Turner. Our analysis is inspired by the philosophy of Herman Dooyeweerd, in particular his transcendental criticism and theory of modalities. We describe how Pearce and Turner theorize the concept of sustainable development. On the basis of this description we identify immanent tensions in their approach and analyze to what extent these tensions are caused by implicit normative presuppositions in the key concepts used by Pearce and Turner. Finally, we examine whether Dooyeweerd’s conception of the economic aspect can diminish these tensions.

The demonstration project can be an effective organizational form to transform a clean technology prototype - for example, in the field of photovoltaics, carbon capture and storage, or wind power - into a marketable product. A question with regard to the clean technology demonstration project is how its effectiveness can be increased. This article answers this question by reviewing scientific literature on clean technology demonstration projects of the past 39 years. It distinguishes and analyzes three types of demonstration projects: the technical demonstration, organizational demonstration, and market demonstration. The article proposes that the effectiveness of demonstration projects increases when clean technology prototypes are tested, improved, and marketed successively. First, they should be tested in technical demonstrations, then improved in organizational demonstrations, and finally marketed in market demonstrations. The article also proposes five managerial factors that stimulate the effectiveness of the three consecutive demonstration types. The article concludes with an agenda for future research, concentrating on the diffusion of clean technological innovations through a coherent program of demonstration projects. It presents several theoretical approaches that can be applied to conduct future demonstration project research.