The thesis outlined in this report is a pre-feasibility study of the potential to use waste-to-energy technology in the region Kutai Kartanegara, Borneo, Indonesia. The project is a collaboration between the Kutai Kartanegara government, Uppsala University, the Swedish University of Agricultural sciences and the technology consulttancy Sweco. The current waste management system in Kutai Kartanegara consists of landfills in the cities and open burnings and dumping in the lesser developed sub-districts. This is a growing problem both environmentally and logistically. The electrification in the sub-districts is sometimes as low as 17 % and access to electricity is often limited to a couple of hours per day. The current electricity production in the region is mainly from fossil fuels. Data was collected during a two month long field study in Tenggarong, the capital of Kutai Kartanegara. From the collected data, various waste-to-energy systems and collection areas were simulated in Matlab. Results from the simulations show that a system using both a waste incineration and biogas plant would be the best solution for the region. The chosen system is designed to handle a total of 250,000 tons of waste annually, collected from Tenggarong and neighbouring districts. The system will provide between 155 and 200 GWh electricity and between 207 and 314 GWh of excess heat energy annually. Some of this is used in a district heating system with an absorption-cooling machine. The system investment cost is around 42.5 MUSD and it is expected to generate an annual profit of 16 MUSD. The recommended solution will decrease the emissions of CO2-equivalents compared to the current waste system and fossil electricity production with 50%. The results in the study clearly show that there are both economic and environmental potential for waste-to-energy technologies in the region. But the waste management and infrastructure has to be improved to be able to utilize these technologies. By implementing waste-to-energy technologies, the supplied waste can be seen as a resource instead of a problem. This would give incentives for further actions and investments regarding waste management.

The thesis outlined in this report has been done as a sub-project in cooperation between the municipalities Borlänge in Sweden and Chisinau in Moldova. The project aimed to explore the region's economic and environmental opportunities for waste incineration with energy recovery, also known as Waste to Energy. At present, the solution to the waste situation is unmonitored landfills with smaller sorting operations. Environmentally, this is a poor solution and although there are plans for change, no specific strategy has been presented. Another important issue is Moldova's dependence on foreign produced energy. The country's energy system is dependent on imported natural gas, and only a small part of the country's electrical energy is produced domestically. What makes the waste to energy so interesting for this region is that it contributes to an improvement in both of these issues by using the waste as fuel to reduce energy dependency. The study has been done without specific waste composition data for the Chisinau region. With this in mind a dynamic model in several steps has been made, designed to obtain new results depending on what waste composition is specified. The results of this study show that implementation of a waste incineration plant in the Chisinau energy system is economically and environmentally feasible, given the current conditions. The proposed plant is designed to annually handle 400,000 tonnes of waste, and would with the assumed waste composition deliver 560 GWh of district heat and 260 GWh of electric energy. This production provides an annual profit of 31.6 M €, which gives a positive net present value after the project amortization. Compared with the city's current solution with landfills and gas turbines, the project also provides a significant environmental improvement. During the plant's design lifetime, greenhouse gas emissions are 53.9%, and only 6.8% with the assumption that only a portion of the carbon content of the waste is of fossil origin.