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Introduction
The Toolbox on Solar Powered Irrigation Systems (SPIS) is designed to enable advisors, service providers and practitioners in the field of solar irrigation to provide broad hands-on guidance to end-users, policy-makers and financiers. Risks related to system efficiency, financial viability and the unsustainable use of water resources can thus be minimized. The Toolbox comprises informative modules supplemented with user-friendly software tools (calculations sheets, checklists, guidelines).
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Modules and tools touch upon:
- assessing the water requirements,
- comparing the financial viability,
- determining farm profitability and payback of investment in SPIS,
- sustainably design and maintain a SPIS,
- highlight critical workmanship quality aspects,
- and many more.
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Template:SPIS Homepagebanner
Introduction
Most water pumps utilized for irrigation purposes worldwide are powered by engines run on fossil fuels (diesel, petrol, gas) or on electricity supplied from the grid. Fossil energy sources are limited and emissions from their utilization have negative climate impacts. At the same time, the electricity supply in many developing countries is often insufficient and unreliable or wholly absent in rural areas. Moreover, prices of solar panels have reduced while the quality has improved. Today, solar pumps for irrigation have become an economical, technical and environmentally viable alternative to conventional pumping systems. read more
However, major hindrance for the uptake of the technology is still a lack of information on solar pumps for irrigation and its relatively high investment costs. The knowledge on the potentials, limitations and risks of Solar-Powered Irrigation Systems (SPIS) is incomplete among policy makers, producers and other stakeholders. For example, SPIS are seldom designed in a way that producer needs and site specific conditions (environmental, agronomic and technical aspects) are comprehensively addressed. Consequently, the potential of the technology is not optimized, or worse, has negative ecological and economic impacts.
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A solar array used to pump water from the well (source: Lorentz Chili)
Furthermore it gives insight into how SPIS are designed, set up and maintained. It is accompanied by a set of tools, such as maintenance checklists, data collection guidelines and design calculations. It strives to help find the optimal design of a system, thereby avoiding risks related to system efficiency, financial viability and the unsustainable use of water resources. The manual and tools target stakeholders who advise or finance medium-sized agricultural enterprises. These are
agricultural (irrigation) extension advisors and
credit officers / risk managers in financing institutions. Furthermore the manual support the advisory function of SPIS suppliers, by providing them with a holistic set of knowledge through which they can guide their clients towards a financially and environmentally sound decision.
The manual follows the course of action involved when giving advice on SPIS for an agricultural enterprise. It consists of this introduction and seven further modules. The modular approach enables the user to pick out specific information relevant to his/her situation. Each module however relates to and supplements the other modules.
- GET INFORMED specifies the components and common configurations of a SPIS. Each component is described in detail.
- PROMOTE & INITIATE provides important information and tips for someone who wants to promote the SPIS technology in a particular area. It focuses on the analysis of opportunities and risks, the stakeholders involved, as well as promotion strategies and activities.
- SAFEGUARD WATER focuses on water governance issues and potential negative impacts of (ground-)water depletion through solar pumping.
- FINANCE provides information to financial service providers financing or planning to finance SPIS. The module targets stakeholders at management level who decide on credit policies and loan officers who assess single loan applications for financing SPIS.
- DESIGN helps to select the suitable system configuration for a specific situation. A substantial set of tools helps to assess site conditions, select and design the appropriate type of SPIS and conduct a simplified financial viability assessment and calculates the detailed financial viability of the producer.
- SET UP provides information and tools to enable the installation of a SPIS. It focuses on the selection of installers, acceptance and system tests as well as documentation and hand over of the system.
- MAINTAIN elaborates on maintenance plans, the selection of service providers, regular routines and documentation and monitoring.
Module Structure
The modules are all structured uniformly. It starts with the module aim and orientation and a brief description of the relevant process steps. These are processes that are recommended to be considered in a particular order. They are numbered and summarized in a flow diagram at the beginning of each module for easy reference read more
Structure of Each Process Step
Each step in the process of each module is described on one or two pages. The process step is concluded with an overview of the most relevant aspects:
- Outcome / products
- Data requirements;
- People and stakeholders involved;
- Important issues to be considered.
At the end of each module links for further readings and multimedia files are provided. This last page is also used to describe what tools supplement to the module. The tools are available online and users can adapt them to their specific needs.
Content of Modules
Overview of Tools
Technical Glossary
Abbreviations
Imprint
Published by
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Production
Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ)
Project Powering Agriculture – Sustainable Energy for Food Security
Registered offices
Bonn and Eschborn, Germany Friedrich-Ebert Allee 40
53113 Bonn, Germany
T +49 228 4460-0
F +49 228 4460-1766
Dag-Hammarskjöld-Weg 1-5
65760 Eschborn, Germany
T +49 61 96 70-0
F +49 61 96 79-1115
info@giz.de
www.giz.de
Editorial Team
- Robert Schultz, GIZ Powering Agriculture
- Jan Sass, GFA Consulting Group GmbH (GFA)
- Christine Fröhlich, GFA
- Andreas Hahn, ah Advice International
- Lennart Woltering, GFA
- Katja Diembeck, GFA
GIZ is responsible for the content of this publication. Eschborn, October 2016
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