Slamet Susanto, The Jakarta Post, Yogyakarta | Wed, 04/07/2010 10:06 AM
Residents of Gunungkidul have been liberated from chronic clean-water shortages due to droughts thanks to a new solar-powered water pump developed and installed by students.
The technology was developed by students from Yogyakarta’s Gadjah Mada University’s (UGM) School of Physics grouped in the Energy Center Students Community, in cooperation with Curtin University of Australia
The new clean-energy system pumps water from the Tuk Kaligede River located more than 2 kilometers away at the foot of a hill.
The students installed a submersible pump into a spring near the village that is fed by the river and powered it with 12 solar panels.
Together, the solar panels produce 1,200 watts of electricity, which powers the pump to deliver 1,800 liters of water per day to a reservoir located 88 meters up the hill and 1,600 meters away from the river.
The water is then distributed to six smaller reservoirs, each with a capacity of 5,000 liters, built in the middle of the village.
To meet their needs, 52 families in Banyumeneng hamlet, Giriharjo village, Panggang district, can
now fetch clean water from the reservoirs.
They no longer have to buy water during droughts or spend hours traveling to buy water.
“We live in a hilly limestone area. We depend on rain water, which we retain. If it doesn’t rain for a month, we have to buy water to survive,” said villager Suryanto, who is also the leader of the Kaligede Water Management Organization, formed by the residents.
He said the Tuk Kaligede never dried up but was located far from the village.
“It takes at least one-and-a-half hours to fetch two containers of water due to the rough terrain,” he said.
“Solar cell technology has been around for a long time already, but its application, which is really beneficial to people, must be developed further,” said UGM’s Engineering School lecturer and initiator of the clean water facility, Ahmad Agus Setiawan.
According to Agus, the disadvantage of the system was that it did not incorporate a reserve energy system meaning the pump would stop working in the absence of sunlight.
“Installing the equipment was actually very easy and quick, but the willingness to manage water independently is more important and that requires a long time to develop,” Agus said.
The equipment cost or Rp 250 million (US$25,000), part of which was provided by the Curtin University as a prize for the student group’s victory at the Mondialogo Engineering Award in 2007.
The new system is fully managed by Kaligede’s Water Management Organization. Each month residents pay a Rp 15,000 maintenance fee to the organization.
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