SUGARCANE ENERGY USE: THE CUBAN CASE

摘要: Abstract This paper examines the history, methods, costs, and future prospects of Cuba's attempts to develop energy potential sugarcane. An overview main factors affecting current sugarcane agro-industry in Cuba is provided, along with an analysis why, despite by Cuban government revive country's agro-industry, industry continues decline. The prevailing conditions degree modernization sugar factories are evaluated. sugar-agro industry's production bottlenecks studied. fall yield from 57.5 ton/ha 1991 22.4 ton/ha 2005 its relation land use explained. socio-economic impact agro-industry's downsizing assessed. governmental quasi-governmental entities charge development legal framework analyzed. opportunities growing international biofuels bioenergy market To situate within global market, best practices relating commercialization examined determine which these experiences can be transferred Cuba. biofuel based on a comparative technical–economic assessment three possible scenarios: (1) situation, where only produced; (2) simultaneous sugar–anhydrous ethanol; (3) sugar–ethanol generation surplus electricity exported public grid. Some key assumptions underlying analyses as follows: Ethanol operation costs for 7000 ton/day-sugar mill estimated 0.25 0.23 USD/l, respectively. influence gasoline prices also kWh starting bagasse at 0.06 0.04 USD, cogeneration capacity 9006 GWh/year. Investment–profit offered two annexing 300,000 l/day distillery mill, enlarging 7000 ton/day mill. Added cost/added-value was carried out. environmental issues associated sugarcane-based fuel