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Energy Efficiency of the Wala and Lib Pumping Stations in Madaba Improved Through a Public Private Partnership

Thursday, 06 August 2015 13:00

The challenge

The Water Authority of Jordan (WAJ) operates pumping stations across Jordan to distribute water to citizens. The current infrastructure used for water distribution requires a large amount of energy, and this has made WAJ the country’s largest energy consumer. This issue can be addressed by modernizing the pumping stations and implementing newer technologies, which can vastly improve not only energy efficiency, but also loss of water. This, in turn, reduces costs for WAJ.

Taking action

To improve the efficiency of water distribution in Jordan, a partnership was established between the public and private sector. WAJ and the German Federal Enterprise for International Cooperation (GIZ) approached a private consortium comprising Engicon and Wilo SE, and a performance management contract was then set up between Miyahuna and Engicon O&M to improve efficiency at the Wala and Lib pumping stations, which lie within the governorate of Madaba.

This initiative sought to reduce energy consumption and water losses at both pumping stations and provide better service to their customers over a five-and-a-half year period. The role of the private consortium was to finance, supply and install new pumps, valves and other accessories at the Wala and Lib pumping stations and to manage operation and maintenance of these stations. They would also provided training to staff on the new equipment and a more efficient operation process, in addition to developing O&M manuals for the pumping stations.

A more efficient water distribution system

New pumps and valves, produced by the German manufacturers Wilo and VAG, were introduced by the private consortium. A new SCADA system was also installed to monitor and log the data of all parameters in the pumping stations. The existing electrical panels, which had been old and run down, underwent full maintenance to improve their working order and reduce the risk of the pumps shutting down.

The new system was in place as of the 4th of January 2015, and there have already been significant energy savings. Initial results showed a 13% energy saving at the Wala pumping station and a 39% saving at the Lib pumping station. These figures are above the expected outcomes.

The second phase of the work, which will commence after March 2015, will entail renovating the pumping station building.

The following table illustrates a comparison among the previous, guaranteed, and current energy consumption (until the end of January 2015) at both the Wala and Lib pumping stations.

Pumping Station (PS)

Specific Energy Consumption at Baseline

Specific Energy Consumption at WAJ Target Efficiency

Achieved Specific Energy Consumption up to 31/01/2015

 

[kWh/m3]

[kWh/m3]

[kWh/m3]

Wala PS

1.02

0.90

0.89

Lib PS

1.1

0.82

0.71