Planning of Hybrid MicroHydro and Solar Photovoltaic Systems for Rural Areas of Central Java, Indonesia This paper proposes the planning of hybrid microhydro and solar photovoltaic system for rural areas of Central Java, Indonesia. The Indonesian government has paid great attention to the development of renewable energy sources, especially solar and hydropower. One area that has a high potential for both types of energy is the province of Central Java, located on the island of Java, Indonesia. In this research, we conduct field research to determine the ideal capacity of solar and microhydro hybrid power plants, electricity load analysis, and optimal design of hybrid power plants. Data on the potential of microhydro plants are obtained by direct measurement on the Ancol Bligo irrigation channel located in Bligo village, Ngluwar district, Magelang regency, Central Java province, Indonesia. Data on solar power potential were obtained from NASAxe2x80x99s database for solar radiation in the Central Java region. Hydropower potential data include channel length, debit, heads, and power potential in irrigation channels originating from rivers. These data are used to design an optimal hybrid power plant. The method used to obtain the optimal design of a hybrid power plant system is based on the analysis of capital costs, grid sales, cost of energy, and net present cost. Based on the parameters of the analysis, the composition of the optimal generator for the ongrid scheme to the distribution network can be determined. The results showed that hybrid power plants were able to meet the needs of electrical energy in the villages around the power plant and that the excess energy could be sold to national electricity providers.

Site specific process design for Hybrid CSPWaste plants Abstract   In this paper the features of hybrid CSP xe2x80x93 Waste power plants are evaluated as a function of the location. The process integrates waste and concentrated solar within a combined cycle. The model is solved as a nonlinear optimization problem within a multiperiod scheme to decide on the contribution of the energy resources and the operating conditions of the facility to meet a demand of 25xc2xa0MW over a year as a function of the resource availability, solar and waste. Urban and rural areas of 5 different regions are considered selecting different types of waste, cattle and pig manure in rural areas and sludge and organic municipal solid waste (OMSW) in urban areas. The results yield that cattle slurry is selected over pig manure and OMSW over sludge. Only rural areas have enough waste to meet the demand constantly. Reaching the demand represents more than 50% additional investment on waste processing units. As a result, to ensure meeting the demand the cost of electricity increases by 30% compared to a CSP plant that produces following solar availability.