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Welcome to The Open Source Solar Project (OSSP)
The sun is the ultimate open energy source and OSSP aims to help everyone harness it. Solar PV in the developing world has been growing at an exponential rate and has managed to provide energy access to millions of people, unfortunately adequate standards and appropriate training programs have not followed suit. Many of the equipment vendors and installers have little to no training nor are they subject to any regulations. This has lead to the proliferation of many improperly designed PV systems that not only lead to poor end-user experiences but also represent a safety risk. This website is an effort to improve small-scale battery-based (SSBB) solar PV system design, safety, and user experiences in these areas by providing appropriate information, resources and tools on the universal, basic aspects of off-grid system design and installation in these contexts. OSSP hopes to serve as both a direct resource in these areas and as a readily-adaptable base for the development of low-cost training materials and programs that are tailored to the needs and standards of a particular area. OSSP is license-free running on the same platform as Wikipedia - please reach out to alex@opensourcesolar.org if you are interested in contributing or translating.
Aims of OSSP:
- Provide an appropriate level of detail for each topic in a way that is practical and accessible for an audience with a varying level of technology literacy.
- Present universal concepts in a way that is universal. Information or resources that are location specific should be added to a country page.
- Provide high quality graphics, well-designed graphics that can be used for training manuals and programs.
- Utilize graphics that include minimal text to enable easy translation using captions.
Consult the User's Guide for information on using the wiki software.
Basics
1. What is an offgrid PV system?
2. PV system types
3. Basic PV system components
4. Electricity and energy
5. Types of electricity
6. Electrical safety
7. Multimeters
Components
PV source
1. Solar PV module (solar panels)
2. Tilt and orientation
3. Shading
Energy storage
1. Energy storage
2. Lead acid batteries
3. Battery safety
Charge controller
1. Charge controller
Inverter
1. Inverter
Mounting system
1. Mounting system
Wire'
1. Wires
'Physical wire protection
1. Metallic raceways
Overcurrent protection
1. Overcurrent protection
Grounding
1. Grounding system
System design
Solar resource
1. Solar resource
Series and parallel circuits
1. Series and parallel
Wire ampacity
1. Wire ampacity
Overcurrent protection device sizing
1. Overcurrent protectiond device sizing
Voltage drop
1. Voltage drop
System installation
Principles of installation
1. Principles of installation
Commissioning
1. Comissioning
Labeling
1. Labeling