This study aims to determine the opportunity cost of processing waste using BSF maggot compared monthly costs incurred by residents, as well evaluating residents' decisions in choosing current costs. Descriptive analysis is used this study, intended provide a clear description and management decision making. The Sorosutan Village Yogyakarta became object research, with result that saved Rp. 3,3...

Carbon pricing aims to capture the external costs of emissions and link them their sources through a price signal, while market-based policy tools support investments in energy efficiency, rewarding investors following certified savings. The interplay between emission trading system white certificate scheme is complex, especially regarding opportunity efficiency two mechanisms combined achievin...

The European Union Green Deal aims at curbing greenhouse gas emissions and introducing clean energy production. But to achieve efficiency, the opportunity cost of different energies must be assessed. In this article, two self-sufficient systems for wastewater treatment are compared. On one hand, high-rate algal ponds system (HRAP) is considered; on other a conventional activated sludge (AS) whi...