Upload
hahanh
View
221
Download
3
Embed Size (px)
Citation preview
03.12.2011 Seite 1
Solar PV Water Pumping for Small-Scale Farmers in Uganda
Monika RammeltRWSN Forum, 2nd December 2011
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 2Page 2
Background
Cooperation of GIZ Financial Sector Development and EnergyProgramme in order to pilot a loan product for solar PV basedirrigation
GIZ Energy Programme financed solar PV pump and supported thepilot farm with technical expertise
Advanced training on solar PV water pumping targeting solar technicians
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 3Page 3
Water source: Surface pond with constant ground water inflow (95 m distance to tank)
Drip irrigation system for vegetable production (1/4 acre field) supplied by Ugandan company incl:Water tank (1,000 l)Drip irrigation tubesSeedlingsFertilizers and pesticides
Solar PV water pump (Shurflo Surface Pump, 120 Wp) distributedand installed by Ugandan company
Pilot Scheme in Kalongo, Agago District
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 4Page 4
Installation of pilot scheme
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 5Page 5
Installation of pump
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 6Page 6
Harvest
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 7Page 7
Price in UGX Price in EUR
Drip irrigation system incl. installation
2,450,000 700
Seedlings, fertilizer etc. 1,423,000 400
Solar PV water pump incl. installation
5,124,370 1,450
Additional (optional) costs (stand for water tank, transport etc.)
1,520,000 430
Total 10,517,370 2,980
Costing
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 8Page 8
Outcome
Crop Number of planted seedlings
Number of seedlings that survived
Survival rate
Profit in UGX
Cabbage
Tomatoes type I
Tomatoes type II
Onions
1601
797
180
2432
1572
732
141
1687
98%
91%
78%
70%
Summe
280,000/=
886,000/=
483,000/=
267,000/=
1,916,000/=
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 9Page 9
Potential for savings of cost
Local production of seedlings (saves transport costs)Alternative fertilizers and pesticides (organic methods)Manual water pump
Pricein UGX
Irrigation system incl. installation 2,450,000
Seedlings, fertilizers etc. 300,000Manual water pump 500,000Additional costs (stand for water tank, transport, etc.) 300,000
Total 3,550,000
Cost savings of up to 7 mio UGX possible
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 10Page 10
Performance of pump on pilot farm
Pilot duration 112 days, of which 44 days without rain, of which pump functioned without problems on 36 days (4 days with failure)
Pump needs 1 h to fill tank, manual pumps can pump up to 4,000 l/h
Problems experienced:
• Pump suction clocked (quality of water source)
• Angles in pipe systems caused leakages
• Insufficient after-sales serve (distance Kampala to pilot site too
high)
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 11Page 11
General observations
Only 1 pump model for small-scale farmers readily available on Ugandan market – Shurflo DC booster pump; other pumps can beordered in Uganda against extra charge
Shurflo is a diaphragma pumpand hence susceptible to problemswith dirty and muddy water
The Shurflo motor (DC motor with brushes) is suitable for shortpumping intervals rather than continuous daily pumping
Lack of trained technicians capable of maintaining and repairing solar PV pumping systems
Unavailability of spare parts in project region
Theft protection (pole mounting) keeps panels out of reach forcleaning
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 12Page 12
1-week training for solar technicians on solar PV water pumping in Northern Uganda in Dec 2010
Basics (physics, PV, hydraulics, water sources)
Design and installation of pump and irrigation system
Field visit to pilot site
Operation and maintenance
Market overview on available productsin UG
Advanced training for solar technicians
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 13Page 13
Thank you.
Monika RammeltGIZ Energy Programme UgandaAdvisor Rural Electrification
Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH
Office A312, Amber House, Kampala RoadP.O. Box 10346Kampala, Uganda
T +256 772 746 387F +256 414 234 165M [email protected] http://www.giz.de
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 14Page 14
Solar water pumping in Northern Uganda
Ministry of Energy and Mineral developmentWafula wilson – Principal Energy [email protected]. 0772867054
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 15Page 15
Solar water pumping in former IDP camps
These IDP camps were setup in northern Uganda during the Kony war.Due to need for water, various NGOs, and donors provided water facilities using solar technology and diesel powerThere are 73 water pumping systems of which 35 system are powered by solar PV and 38 systems are powered by diesel.All the diesel engines are still functioning but they are not used due to high costs of diesel fuel, remote places and low income of the rural population.The districts prefer to convert the diesel systems to solar
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 16Page 16
Findings on the SWP systems
Ten solar water pumping systems were working some with missing/faulty components like water tapes, control gates, broken pipes, and regulators. Three solar water pumping systems were trouble shoot during the field trip.There are no active water boards in all the solar water pumping systems which have resulted in failure of small components and increase in systems component stealing.Four solar water pumping systems components are stored at police posts, army barracks, and sub County after recovery from theft.
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 17Page 17
Solar water pumping systems that are not working have minor faults like sunken water levels, failed/stolen regulators, failed water pumps, open water taps, dirty solar modules, and lack of active water boards.Simple analysis of the visited solar modules have an array of 16,KWattpeak and the current estimated market value stands at 192,420,000/= (One hundred Ninety Two Million, Four Hundred Twenty Thousand Uganda shillings) excluding other components. (USD 80,000)During the visit the team also noticed failed five solar water heating systems due to failed solar water pumping systems.There is willingness from the Water and Sanitation Development Facility – North and Gulu Water Department to work with the Ministry to rectify the systems.
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 18Page 18
The inspected solar water pumping systems in the former IDP camps are categorized in 3 groups asbelowGroup Number Status Requirement Recommendation
1 18 systems working systems or not working
Replacement of recovered solar panels, water taps, connection gates, damaged distribution pipes, lowering of water pumps, trouble shooting, and community mobilization
Repair the systems by the Ministry through GIZ/PREEEP project as no major procurement of Equipments is required and will handle in house
2 7 system Not working due to stolen / failed component
Need to replace one major component due theft, technical failed, or removed components.
Need procurement of Equipments which can be handled after group I systems
3 10 systems Dismantled systems
Need relocation, replacement of more than one major component or whole system
Need further study after rectification of the Group I and II systems
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 19Page 19
Summary of the SWP systems
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 20Page 20
Challenges of Solar Water Pumping Systems in former IDP camps
Theft and vandalismLack of collective responsibilityLack of technical capacity for service and maintenanceLack of financial contribution of communitiesLack of income generating activities attached to the SWPSLimited end-user training and sensitizations
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 21Page 21
Failed solar water pumping systems one at Barr primary schoole with the solar modules atored at the sub County and one with broken water tank at Pajure health unitwith the
RWSN Forum, 2nd December 2011: Photovoltaic Pumping Systems in Rural Water Supply
03.12.2011 Seite 22Page 22
Conclusion
Solar water pumping is the viable and sustainable way of supplying safe water to the rural communitiesNeed for support from governments, donors, and NGOs to support rural communitiesTechnical trainings at various levels is also required