LOCATION MANAGEMENT BY LOCAL INSTITUTION DESIGN AND CONTRUCTION

Bogor, 21-22 October 2015 717 MHP units sequentially from the upstream to the downstream. Kinetic energy of flowing water imparted by gravity drives a turbine and generates electricity, leaving the water intact and available for other turbines. The outflow of the first unit is maximized to drive the turbine of the second MHP unit. The outflow of the second is utilized to drive the turbine of the third, and so on. Meanwhile, in terms of process, the term cascade describes the sequential development process of MHP. The success of the first unit of participatory MHP inspired and triggered the development of the next MHPs. The series of MHP units were developed in a single stream for three communities aimed to empower collective participation: three different physical conditions and three different specification of turbine for three different socio-economic characteristic of communities.

2. LOCATION

The development of cascade MHP system were conducted from 2013-2015 in three sub villages of Borongrapoa Village, the Sub District of Kindang, The District of Bulukumba. All sub villages are located at the foot of Lompobatang Mountain. Singgang katimbang sub Village is the highest and the farthest settlement area of Borongrapoa Village. Respectively from highest to lowest: Singgang- Katimbang, Kayubiranga, and Na’na. Figure 1: Gambar lokasi pemukiman PLTMHBorongrapoa

3. MANAGEMENT BY LOCAL INSTITUTION

The operational of the MHP is managed by local institution. All users of the electricity produced by MHP are the member of local institution. The local institution was self-initiated by local community and the responsibility of each person and operational rules were based on internal agreement among group members. The responsibilities of the local institution are to manage and maintain the MHP unit. In addition to assure the operational continuity of the MHP units, the development of local institution is also addressed to guaranty the continuity of water supply as a turbine energy driver by involved in the forest management activity.

4. DESIGN AND CONTRUCTION

The result of field measurement to be employed as a basis of design and construction of the cascade MHP system is presented in Table 1. Based on the data and potential of local institution capacity to manage the operational of MHP unit, the turbine type selected was crossflow turbine. Dimension and electricity capacity of three turbines is presented in Table 2. Figure 3 present the three turbines for each location. Bogor, 21-22 October 2015 718 Tabel 1: Field measurement data Location Potential discharge ltsecond Net discharge ltsecond Head m Household number HH Singgang Katimbang 80 40 25 23 Kayu Biranga 130 100 14 35 Na´na 350 300 5 43 Tabel 2: Turbines Dimension and capacities Location Rotor witdh cm Penstock diameter inch Penstock +length meter Optimal capacity KWatt Singgang-Katimbang 5 5 84 7 Kayu Biranga 15 10 40 10 Na’na 75 10x2 40 15 Figure 2: Crossflow turbines: A Singgang- Katimbang, B Kayubiranga, C Na’na The MHP unit in Singgang Katimbang was financed by two parties, CIFOR and the vilaggers. CIFOR focused on supplying civil engineering material not available in the village, turbine and penstock. Meanwhile, villagers prepared cable and in-house electrical instalaltion component by their own budget and civil engineering material available in the villages. The success of MHP development in Singgang Katimbang inspired the two neighbour sub villages to develop MHP Units using their own budget. In those two sub villages, the role of external institutions NGO and Forestry Researcher were focused on technical guidance and facilitation of institution development. The MHP unit in Singgang-Katimbang sub-village with the electricity capacity of 6 KVA has been benefited for 23 households. The second unit of MPH in Kayubiranga sub-village is 10 KVA for 32 households, and the third is in the Nana sub-village, 20 KVA for 45 households.

5. CONCLUSION