Photovoltaic water pumping systems (PVWPS) are a promising solution to improve domestic water access in low-income rural areas. It is challenging, however, to make them more affordable for the local communities. We develop here a comparative methodology to assess relevant features of both widely employed PVWPS architecture with water tank storage, and hardly used PVWPS architecture with a battery bank instead of tank storage. The quantitative comparison is carried out through techno-economic optimization, with the goal of minimizing the life cycle cost of PVWPS with constraints on the satisfaction of the water demand of local inhabitants and on the groundwater resource sustainability. It is aimed to support decision-makers in selecting most appropriate storage for domestic water supply projects. We applied the methodology in the rural village of Gogma, Burkina Faso. Results indicate that the life-cycle cost of an optimized PVWPS with batteries is $24.1k while it is $31.1k if a tank is used instead. Moreover, reduced impact on groundwater resources and greater modularity to adapt to evolving water demand is noted if using batteries. However, as batteries must be replaced regularly and recycled adequately, PVWPS’ financial accessibility could increase only if sustainable and efficient operation, maintenance, and recycling facilities for batteries were present or developed locally.

Despite the abundance of renewable resources, renewable energy accounts for less than 1% of the total installed power capacity in oil‐producing Gulf Arab states. While the political–economic structures of oil‐producing Gulf Arab states are thought to have played a role in determining these states' remarkably low uptake of renewable energy, these structures remain understudied. With a focus on Oman, we assess how political–economic structures have influenced its adoption of renewable energy. We implement an analytical framework that integrates insights from energy transition studies and the political–economic theory of rentier states. Drawing on secondary data and primary information from semi‐structured interviews with renewable energy developers and energy experts, this study reveals that renewable energy roll‐out in Oman has been delayed through three different strategies, namely the use media and public debate, a reduction of the power of renewable energy stakeholders, and the use of institutional mechanisms to strengthen hydrocarbon‐based technologies. Oman's renewable energy transition efforts aim to protect rents from oil exports rather than advance low‐carbon energy transition.

Access to water for domestic and irrigation uses remains limited across Sub-Saharan Africa, particularly in rural areas. While the technical feasibility of implementing innovative technologies to improve water supply has been often evaluated, less is known about the drivers that motivate users to pay for obtaining the inherent benefits of improved water supply. In this article, the determinants of the marginal willingness to pay (mWTP) for improved domestic and irrigation water are investigated. For this purpose, a contingent valuation study is performed in rural Rwanda. This study uses survey data from 316 households situated in 8 villages, in which ~20% of the households receive electricity thanks to microgrids powered by solar energy. It is found that the mWTP for improved domestic water supply is influenced by the proportion of children in the household, business ownership, and satisfaction with water quantity and quality. The mWTP for irrigation is determined by respondent education, business ownership and crop area planted. This paper contributes to the literature by allowing a comparison of the determinants of the mWTP for improved domestic water supply to the determinants of the mWTP for irrigation. Another contribution is to examine the mWTP for improved water infrastructure in partially electrified villages. Identifying areas with high marginal benefits from water can guide infrastructure investment and electrification efforts while improving well-being and increasing revenues in rural areas.

One way of increasing access to electricity for impoverished unconnected areas without adding significant amounts of CO₂ to the atmosphere is by promoting renewable energy technologies. However, decision-makers rarely, if ever, take into account the level of in-built energy requirements and consequential CO₂ emissions found in renewable energy, particularly photovoltaic cells and related equipment, which have been widely disseminated in developing countries. The deployment of solar panels worldwide has mostly relied on silicon crystalline cell modules, despite the fact that less polluting material—in particular, thin film and organic cells—offers comparatively distinct technical, environmental and cost advantages characteristics. A major scientific challenge has thus been the design of a single decision-making approach to assess local and global climate change-related impacts as well as the socio-economic effects of low-carbon technology. The article focuses on the functions of the multi-criteria-based tool SURE-DSS and environmental impact analysis focused on greenhouse gases (GHG) emissions balance to inform the selection of technologies in terms of their impact on livelihoods and CO₂eq. emissions. An application in a remote rural community in Cuba is discussed. The results of this study show that while PV silicon (c-Si), thin film (CdTe) and organic solar cells may each equally meet the demands of the community and enhance people’s livelihoods, their effect on the global environment varies.

The promotion of renewable energy (RE) technology in China has been paramount in the country’s policy to reinforce energy security, reduce air pollution from coal, oil and gas, and tackle climate change. This study examines whether the RE sector in China (primarily solar and wind) might suffer an immediate or long-term backlash as the result of cuts in oil import costs. The demand for oil in China has increased at an astounding rate since the 1980s. In the face of its burgeoning economy and multiplying vehicle fleet, energy security has become a significant preoccupation for policy makers. The rapid fall in oil prices on the international market since June 2014 is likely to improve security of supply and positively impact the nation’s economy. However, the fate of another energy sector, RE technology is less predictable. The article proposes a quantitative model to compare oil demand and prices over recent years with the impact on investment in RE, taking into account that the main competitor of RE is coal rather than oil. How energy policy has evolved and adapted over this period is also discussed. It is observed that lower oil prices decrease RE investments but reduce concerns over energy security. But, the strength of the impact depends on the duration of low oil prices and its volatility. The commitment of the government to reduce global CO₂ emissions may not be overlooked.