Sustainable biodiesel generation through catalytic transesterification of waste sources: a literature review and bibliometric survey

Sustainable renewable energy production is being intensely disputed worldwide because fossil fuel resources are declining gradually.

HUBUNGAN SIKAP, NORMA SUBYEKTIF DAN PERSEPSI KENDALI PERILAKU TERHADAP NIAT KTH DALAM BUDIDAYA TANAMAN ENERGI DI YOGYAKARTA

Energy policy in the world has changed due to the climate crisis. As a result, the need for renewable energy supply is increasing. Trees in the forestry sector are a reliable source of biomass for renewable energy production. Community forests could play an important role in supplying biomass-based renewable energy production. The study aims to understand the attitude, subjective norms, and perceived behavioural control on Farmers Forest Group's intention in cultivating trees for energy in Yogyakarta Province. The Theory of Planned Behaviour approach was used to analyse the correlation between Attitudes, Subjective Norms, and Perceived Behavioural Control on Forest Farmers Group Intention in cultivating trees for renewable energy. A survey using an online questionnaire was conducted on Forest Farmers Groups in four districts in DI Yogyakarta; Sleman, Kulonprogo, Bantul, and Gunungkidul. The survey results were analysed using non-parametric statistics.The results showed a significant positive correlation between Attitudes, Subjective Norms, and Perceived Behavioural Control on the Forest Farmers Group's Intention to cultivate trees for renewable energy. The study provides policymakers and privates with insight into working with the farmers when they are about to implement biomass-based renewable energy programs

Clean Electricity, Dirty Electricity: The Effect on Local House Prices

Renewable energy production is one of the most important policy instruments to fight climate change. However, despite global benefits, renewable energy production entails some local challenges, such as requiring more space per unit production capacity. In this paper, we study the external effects of large-scale conventional and renewable electric power generation facilities on local house prices. We combine information of all coal, gas, and biomass plants, as well as all wind turbines in the Netherlands, with 1.5 million housing transactions over a period of 30 years. Using a difference-in-difference as well as a repeated sales model, we study the effects of facility openings and closings. Our results show negative external price effects for gas plants and wind turbines, but positive effects for biomass plants, conditionally upon ex-ante lower priced locations. The external effects of power generating facilities on local housing markets are important to consider, especially with the current focus of public policies on the expansion of renewable energy generation. Our paper is one of the first to present a large-scale study, using detailed information, and comparing several different energy sources in one framework.

Integrated Engineering, Environmental, and Economical Modelling of Micro Hydro Plant (MHP) Production

The use of renewable energy has commonly concentrated on energy production through wind engines and solar panels. Nowadays, the micro-hydropower (MHP) plant has a great challenge as an important contributor to energy systems. Indonesia has the potential natural resources to develop that power plant, in the form of the river where is abundant throughout all provinces. The research aims to address solving issues regarding deficit energy by renewable energy production. The environmental and hydrological approaches were used to determine the location to obtain the optimal and proper utilization of MHP. The analysing from all modelling creates an economical assessment of MHP energy production. The result recommends MHP with the capacity of 2 x 4.0 MW and a total discharge of 14.30 m3/second whereas design flood discharge is 813.47 m3/second (Q100 year). The implementation of MHP is an effort to achieve independent energy in the region.