Kibindu Gasifier and Solar Hybrid Mini-Grid

Why to choose this solution?
Rural electrification is a critical challenge in developing countries and Tanzania is no exception. Kibindu village is located in Chalinze District in Coast Region and has a population of about 10,000 people. By year 2015 and before, diesel generators were the main sources of electricity to the villagers. The solution provided is to facilitate generation of electricity through a hybrid mini-grid system and development of distribution network . Kibindu mini-grid is a hybrid system of biomass gasifier system (20kW/32KVa) and solar PV (20kW). The gasifier use maize cobs as a feedstock to generate electricity. The village has potential to supply 40 tonnes of maize cobs per season. The Kibindu mini-grid can supply electricity to more than 200 households, SMEs and institutions. Kibindu mini-grid is a renewable energy-based system supplying reliable and clean electricity to villagers who before were relying on wicked lamp, candles and diesel generators for lighting and productive activities.
Savings per day or production:
There is notable cost saving for customers who are using energy efficient appliances in comparison to the cost they use to pay for diesel generators which were supplying power for a limited period of time. Time and money savings have also been realized by local government officials at village and ward offices where they are no longer traveling to town for stationary and printing services. Social services have improved and time for executing business services have been shortened.
Cost in money and in own time to construct:
Installation of the two systems (gasifier and solar) and the distribution network (grid) costed about USD 200,000.
About 15 to 20 years solar panel and gasifier, 3-4 years for solar batteries.
Maintenance needed:
For the gasifier, maintenance of combustion engine is needed in case tar accumulates. For the solar part, maintenance requirement are relatively easy, more so on batteries.
Resources needed in use:
Biomass, in this case maize cobs and solar energy.
Problems and limits:
With biomass gasifier, too much particulate matter, tar or other residues decrease the lifetime of the combustion engine and make frequent maintenance necessary. The main strategy to address this challenge is to equip gasifier systems with a gas filter. This raises the costs, requires frequent cleaning of the filter system, and often produces much carcinogenic waste, especially in the case of wet stripping of the gas. Sometimes availability of gasifier feed stock is a challenge.
Where and how can you get it or make it?
"Available in Kibindu village, Chalinze District, Coast Region in Tanzania."
Skills needed to produce, install. maintenance, use:
Skilled technicians are required for installation, maintenance and operation of the gasifier and solar hybrid mini-grid system.
How to use it:
How to maintain it:
Climate effect (if any):
Electricity generated from the hybrid mini-grid in Kibindu avoided the use of fossil fuels and has thereby helped to reduce and avoid CO2 emissions. Emissions that would have resulted from decomposition of maize cobs avoided through conversion of waste to energy. Solar power is a renewable energy which has many beneficial effects to the climate.
Where it is used and how many users are there?
Used by more than 1,000 people in Kongwa villages in Matombo, Biro village in Morogoro region and Kibindu village in Coast region.
Why is it successful?
Rate of rural electrification is still low in the country (only about 17%) and demand for sustainable energy for both consumptive and productive purposes is growing rapidly.
If you can make it, a short description, typical problems, materials needed.:
non relevant
How to make it (if possible):
How is it delivered and by whom?
Actors: SESCOM company, Husk Power Company of Tanzania (developers), USAID development partner/donor, Kibindu villages (customer/users), REA, EWURA, Ministry of Energy, District and village authority. Part of the installation costs were covered by USADF Power Africa Grant. The system is managed by SESCOM and Husk Power, maintenance and operational costs are charged from customer bills through pay as you go system.
Successful financial model
Grant covered capital costs. Operational costs are recovered from payment of electricity bills.
What policies and strategies helped the success?
The first and second generation Small Power Producers (SPP) Frameworks developed by the government of Tanzania, 2008 and 2015.
More info:
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Name of the association uploading the case:
Centre for Sustainable Energy Services (TaTEDO)
When was the case uploaded? (YYYY-MM-DD):