Difference between revisions of "PV-Diesel Hybrid Mini-Grid"

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Up to now overall experiences with PV-Diesel Hybrid Mini Grids are not very positive. The established tariffs are often too low to cover the costs. The capacity of the system is often too low, leading to frequent overloading. Due to insufficient tariffs financial reserves for investment cannot be built up.<br/>Electricity from PV-Diesel system generally costs around 0,5-0,8 Euro per KWh. Costs of Diesel generators alone are calculated to be around 0,35 Euro. The high costs of the hybrid system are mainly caused by the storage of the solar electricity (around 0,3 € per KWh).
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= Overview =
  
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One possibility to avoid high storage costs is to use the solar electricity only during daytime, with a small battery system for peak demands. At night or during rainy days the electricity is generated by the Diesel generator.  
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One possibility to avoid high storage costs is to use the solar electricity only during daytime, with a small battery system for peak demands. At night or during rainy days the electricity is generated by the Diesel generator.
  
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= Experiences in Senegal =
  
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► Experience from [[Energising Development (EnDev)|EnDev]].
  
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In Senegal EnDev disseminates PV-diesel hybrid mini-grids for the electrification of villages with up to 500 inhabitants or 40 households.
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In [[Senegal Energy Situation|Senegal]] EnDev disseminates PV-diesel hybrid mini-grids for the electrification of villages with up to 500 inhabitants or 40 households.
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<u>The systems consist of (approximate total cost including installation in brackets):</u>
  
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The systems consist of (approximate total cost including installation in brackets):
 
 
*a PV array with a capacity of 5.1 kW<sub>p</sub>consisting of 30 polycrystalline [[Solar Cells and Modules|PV modules]] with a capacity of 170 W<sub>p</sub>each (15,000 €)
 
*a PV array with a capacity of 5.1 kW<sub>p</sub>consisting of 30 polycrystalline [[Solar Cells and Modules|PV modules]] with a capacity of 170 W<sub>p</sub>each (15,000 €)
 
*a [[Batteries|battery]] bank consisting of 24 elements of 2 V of lead-acid tubular plate batteries; element capacity is 800 Ah C10 leading to a bank capacity of 38,4 kWh (15,000 €)
 
*a [[Batteries|battery]] bank consisting of 24 elements of 2 V of lead-acid tubular plate batteries; element capacity is 800 Ah C10 leading to a bank capacity of 38,4 kWh (15,000 €)
 
*a monophase generator of 10 kVA linked to the PV system (7000 €)
 
*a monophase generator of 10 kVA linked to the PV system (7000 €)
 
*a 5000 VA inverter (4,000 €)
 
*a 5000 VA inverter (4,000 €)
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*220 Volts low voltage three phase [[Alternating current|AC]] distribution through a mini-grid (10,000 € per km; 2-3 km per village)
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*220 Volts low voltage three phase AC distribution through a mini-grid (10,000 € per km; 2-3 km per village)
 
*system housing (6,000 €).
 
*system housing (6,000 €).
  
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<br/>
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= Experiences in Kenya =
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► Experience from Prosolar
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In Kenya, the GIZ project Promotion of Solar-Hybrid Mini-Grids (GIZ [https://www.giz.de/en/worldwide/25332.html ProSolar]) aims at promoting [[:Category:Mini-grid|mini-grid electrification]] of remote areas in [[Kenya_Energy_Situation|Kenya]] with the participation of private sector. The vision is to increase levels of cost-effective, affordable and sustainable rural electrification through private sector leadership.
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'''Achievements'''
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- The Talek Power mini-grid is a pilot project set up in Talek in close cooperation with the Narok County Government and the German Agro Action. The mini-grid consists of a solar-hybrid generation power plant (40kWp solar), combining a storage system of 3.200 Ah, and a 12 kVA diesel generator. Commissioned in June 2015, the power plant delivers solar power to a rural business center and the community through a 3 km low voltage network. The community purchases electricity through a pay-as-you-go mobile money enabled metering technology. The project’s CAPEX (generation, distribution and metering system) cost was ca. 250.000 €. The pilot tests the social and economic viability of mini-grids and serves as a learning scheme for stakeholders. The mini-grid has improved the lives of the people of Talek, fostering economic development, education and improved health.
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- Furthermore, an advanced training course has been developed for solar technicians, qualifying them to install hybrid solar systems in villages. The technicians receive their hands-on training at a 10kW solar-hybrid demonstration system, which was installed at Strathmore University. The demonstration training system was installed using the same technology as the one applied in Talek mini-grid, only in a smaller scale.
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= Further Information =
 
= Further Information =
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*[[Solar Hybrid Systems|Solar Hybrid Systems]]<br/>
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*[[Solar Hybrid Systems: Costs, Financing, Business and Operation Models|Financing solar hybrid systems]]
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*[[Portal:Solar|Solar portal on energypedia]]<br/>
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*[[Portal:Grid|Grid portal on energypedia]]<br/>
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*[[:File:Mini-Grid Sizing Guidebook.pdf|Mini-Grid load assessment and system sizing handbook]]
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*[[:File:Solar PV-diesel Hybrid Business Planning Checklist.pdf|Solar PV-diesel Hybrid Business Planning Checklist]]<br/>
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*ProSolar handbooks: [[:File:GIZ2014-en-where-shall-we-put-it-kenya.pdf|Site selection]],&nbsp;[[Mini Grid Licensing|Mini Grid Licensing]],&nbsp;[[Mini-Grid Sizing|Mini-Grid Sizing]].
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*ProSolar 2016 factsheets:&nbsp;[[:File:2016 GIZ ProSolar brief Leading the way to rural electrification.pdf|ProSolar]]&nbsp;project, &nbsp;[[:File:Mini-Grids RBF Brochure.pdf|Mini-Grids Result Based Funding]]&nbsp;(RBF) project
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*for [[Australia_Energy_Situation|Australia]]: Australian Renewable Energy Agency (ARENA) and Power and Water Corporation (PWC) [http://acep.uaf.edu/media/87693/SolarDieselGridHandbook.pdf Solar/Diesel Mini-Grid Handbook] (2013).
  
 
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= References =
 
= References =
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*[[Energising Development (EnDev)|Energising Development (EnDev)]]
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<references />
  
 
[[Category:Hybrid_Systems]]
 
[[Category:Hybrid_Systems]]
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[[Category:Senegal]]
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[[Category:PV_Mini-grid]]
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[[Category:Mini-grid]]
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[[Category:Rural_Electrification]]
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[[Category:Renewable_Energy]]
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[[Category:Kenya]]
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[[Category:East_Africa]]
 
[[Category:Solar]]
 
[[Category:Solar]]

Latest revision as of 11:04, 8 May 2017

Overview

One possibility to avoid high storage costs is to use the solar electricity only during daytime, with a small battery system for peak demands. At night or during rainy days the electricity is generated by the Diesel generator.

Experiences in Senegal

► Experience from EnDev.

In Senegal EnDev disseminates PV-diesel hybrid mini-grids for the electrification of villages with up to 500 inhabitants or 40 households.

The systems consist of (approximate total cost including installation in brackets):

  • a PV array with a capacity of 5.1 kWpconsisting of 30 polycrystalline PV modules with a capacity of 170 Wpeach (15,000 €)
  • a battery bank consisting of 24 elements of 2 V of lead-acid tubular plate batteries; element capacity is 800 Ah C10 leading to a bank capacity of 38,4 kWh (15,000 €)
  • a monophase generator of 10 kVA linked to the PV system (7000 €)
  • a 5000 VA inverter (4,000 €)
  • 220 Volts low voltage three phase AC distribution through a mini-grid (10,000 € per km; 2-3 km per village)
  • system housing (6,000 €).

The total costs of installing a system is between about 70,000 € and 80,000 €.


The 16 systems have a total PV capacity of 81.6 kWp and can generate 106.9 MWh per year. Electricity generation by the diesel generator is not included in this calculation.


Experiences in Kenya

► Experience from Prosolar

In Kenya, the GIZ project Promotion of Solar-Hybrid Mini-Grids (GIZ ProSolar) aims at promoting mini-grid electrification of remote areas in Kenya with the participation of private sector. The vision is to increase levels of cost-effective, affordable and sustainable rural electrification through private sector leadership.

Achievements

- The Talek Power mini-grid is a pilot project set up in Talek in close cooperation with the Narok County Government and the German Agro Action. The mini-grid consists of a solar-hybrid generation power plant (40kWp solar), combining a storage system of 3.200 Ah, and a 12 kVA diesel generator. Commissioned in June 2015, the power plant delivers solar power to a rural business center and the community through a 3 km low voltage network. The community purchases electricity through a pay-as-you-go mobile money enabled metering technology. The project’s CAPEX (generation, distribution and metering system) cost was ca. 250.000 €. The pilot tests the social and economic viability of mini-grids and serves as a learning scheme for stakeholders. The mini-grid has improved the lives of the people of Talek, fostering economic development, education and improved health.

- Furthermore, an advanced training course has been developed for solar technicians, qualifying them to install hybrid solar systems in villages. The technicians receive their hands-on training at a 10kW solar-hybrid demonstration system, which was installed at Strathmore University. The demonstration training system was installed using the same technology as the one applied in Talek mini-grid, only in a smaller scale.



Further Information



References


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