Off-Grid Power Supply

Transcription

1 Off-Grid Power Supply Energy is here

2 02 03 Affordable Energy for Rural Areas Our Motivation Around 1.6 billion people in the world have no access to electricity. The majority live in remote regions, where long distances and high connection costs make it impossible to connect to the public grid. With our energy solutions we provide a basic power supply for villages, schools, community or health centers. Sub-Saharan Africa, for example, has a rural electrification rate of below 10 percent with approximately 70 percent of its population living in rural areas. Local development is directly connected to energy, which represents a decisive argument for the establishment of local industries or small companies. Decentralized autonomous power supplies will be a major contributor to the energy production of the sunbelt region in the future, even more so for rural communities. The Price for Off-Grid Power Solar off-grid power systems already represent an attractive economic alternative to conventional generators. Fossil energy systems require a relatively low initial investment, but high operational costs, while renewable energies require relatively high initial investment and very low operational costs. Thanks to the global market growth of renewable energies, the costs for off-grid solar systems have been steadily decreasing. At the same time, the oil-price has risen continuously and will continue to do so into the coming decades. The economical parity of solar off-grid systems compared with diesel applications in high solar irradiation regions like Africa lies between three to four years. Reflecting the fact that the diesel price will rise in the coming few years, this breakeven time will constantly decrease. Training for local installers and operators in Mushubi Rwanda. Solar System versus Diesel Assumptions: PV: 140 kwp, Battery: Ah, System: AC coupled, Fuel costs: 1.2 /L, Solar fraction: 75 %, Replacement of batteries every 7 years, incl. installation, maintenance and operation costs Project costs in mio Diesel Solar Hybrid Years juwi Solar is convinced that solar energy is one of the best solutions to assist sunbelt countries in their economic development. With our energy solutions, we provide basic power supply for buildings, schools, small businesses or health centers. We are convinced that the developing countries can only progress by implementing a strong local industry. This is the reason why we plan and implement our energy solutions in close cooperation with our local partner network. juwi Solar is linked to the fields of education, employment, health and water supply due to its cooperation with governmental organizations and NGOs. What is off-grid? Off-grid systems are energy systems that are not connected to the public power grid. They could be either fossil fuel based (conventional energy) or renewable energy based. They produce electricity for autonomous energy consumers (e.g. health centers, hotels, etc.)

3 04 05 juwi s Services Solar Systems juwi Solar plans and builds off-grid solar power systems throughout the world. With years of Further information Basic electrical power supply for rural areas experience in project development and implementing we can adapt the systems to your local Please visit our homepage ( Solar power systems provide the basic electrical power for house- conditions and establish the solar system on-site. We work with local partners to guarantee To help us understand your individual require- holds in rural areas. Environmentally friendly power can now be used operations and maintenance. ments, please complete the downloadable to power lights, refrigerators and communications devices even far off-grid questionnaire you can find on the away from the power grid. juwi supports you and your project from the very beginning. With our advanced sizing software homepage and return it to us. We will then and our experience we are able to offer the optimal solution for your energy requirements. design a bespoke technical layout and a There are two main technologies for a solar power system, the AC- In cooperation with our logistic partners we are able to deliver worldwide and support the nonbinding quotation for you. coupled and DC-coupled system. Both have their inherent advan- installation or commissioning at site with our local representatives. tages and limitations. Based on your specific requirements, we will help you make the right decision. AC-coupled solar system for primary school complex Ruanda juwi s product portfolio. You can find more information on the following pages. PV Power: 3.69 kwp polycrystalline modules Surface: 40 m², rooftop Battery bank: 750 Ah Page 5 Solar System DC-coupled Page 5 Page 6 Page 7 Solar System AC-coupled Hybrid Solar Systems Village Electrification DC Coupling AC Coupling Page 8 Energy Containers Charge Controller Page 9 Backup System Page 10 Solar Fuel Saver Battery Page 11 Solar Pumping kilowatt peak

4 06 07 Solar Hybrid Systems Village Electrification A combination of different energy sources for large consumers Energy supply solution for rural areas It is possible to increase system availability and/or lower the initial economic solution for settlements in sparsely populated rural areas. A investment costs by combining different energy sources (e.g. solar centralized solar power plant supplies the village via a single or three energy, small wind turbines or diesel generators). Such combination phase mini-grid with electrical power. Each household is connected of energy sources is particularly beneficial for clients with higher to this mini-grid. These connections can be equipped with energy consumption such as local commercial centers, hotels, schools and meters or similar products (as energy limiter, prepaid counters etc.) to hospitals. A solar hybrid system is capable to operate autonomously. achieve a specific business and operation model. Village electrifica- In addition, it can be integrated into existing pure diesel generator tion systems typically include a mix of energy sources such as solar sites with solar modules in order to achieve less fuel consumption. photovoltaic plants, wind turbines, micro-hydro turbines as well as These systems can be monitored locally and remotely (via GSM and Rural electrification based on solar power often represents the most Solar hybrid system for a winery Germany Village electrification Namibia diesel generators. In settlements where the consumers are sparsely distributed, the power can be transferred via high voltages lines. web-based solutions). PV Power: 4.1 kwp polycrystalline modules PV Power: 201 kwp polycrystalline modules Standard juwi Solar solutions range from 60 to 300 kw systems. Surface: 42 m², rooftop Surface: 3,420 m², free field Individual adaptations can be made in order to meet power demands Battery: 550 Ah / 48 V, lead gel : 21,840 Ah / 48 V, lead acid up to 1,000 kw and more. Diesel power: 2 x 140 kva, 1 x 350 kva Commissioning: 2011 DC Coupling AC Coupling Charge Controller 11 kv Mini-grid Battery Battery

5 Energy Containers Backup System Standard solution quick installation and easy operation Containerized power solutions have many advantages, amongst them are quick deployment, standardization of equipment and cost savings in terms of on-site construction. Due to its modular nature, the energy containers could be combined to increase system capacity, and could be replicated across a region to ensure a harmonized deployment that simplifies maintenance. Our energy containers use primarily solar energy and can be equipped with other energy sources. The systems are available either completely pre-installed and tested or can be assembled on-site. Desalination plant Namibia PV Power: 20 kwp polycrystalline modules Surface: 180 m², free-field : 1,000 Ah, 48 V Backup power solution for IT equipment, fire protection system, lights in office building Germany PV Power: 120 kwp Battery: 4,500 Ah / 48 V Commissioning: 2008 Systems for a sustainable power supply Regions with unreliable public grids often suffer from electricity black-outs, which can lead to financial losses in small businesses or to critical situations in hospitals. Backup systems are a suitable solution to deliver a sustainable power supply even during grid failures. If such systems are combined with solar power, the energy in the battery storage is supplemented, thus extending the bridging time of the backup system. This also represents a desirable alternative to diesel generators as they require regular testing and maintenance. Módulos Public grid Backup

6 10 11 Solar-Diesel Solution for Fuel Saving Solar Pumping for Water Supply Innovative technology to integrate solar power into diesel grids juwi developed an innovative technology that integrates solar power in new or existing diesel generator grids without the need of batteries. It consists of a smart controller, a solar plant and a sophisticated monitoring system. The produced solar power reduces the load on the generator and thus decreases fuel consumption. This is the perfect solution to cut down generation costs for diesel generator applications in sunny regions. It is ideal for rural industries, hotels and resorts, health centers and villages. Solar diesel solution Burkina Faso PV Power: 3.3 kwp polycrystalline modules Surface: 30m² Diesel Power: 9.2 kw Commissioning: 2009 Sustainable water supply in remote areas Energy and water supply often belong together in Africa and other sunbelt countries. Solar pumps for village water supply, water purification or desalination plants represent an important base for the development of rural communities. As solar pumps are not dependent on batteries, these pumping systems work very efficiently and are extremely robust. Solar water supply Namibia PV Power: 5 kwp Depth: 50 m Reservoir = Control Smart System Controller Submersible Pump

7 juwi Off-Grid Activities Worldwide Last updated: 08/ 2012 juwi Solar GmbH Energie-Allee Wörrstadt, Germany Tel +49 (0) Fax +49 (0) off-grid@juwi.com