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    Walking on sunshine: Pairing electric vehicles with solar energy for sustainable informal public transport in Uganda

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    Ndibatya_Innocent_Walking on sunshine Pairing electric vehicles with solar energy for_2021.pdf (4.078Mb)
    Date
    2021-11
    Author
    Ndibatya, Innocent
    Booysen, M.J.
    Abraham, C.J.
    Rix, A.J.
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    Abstract
    Minibus taxi public transport is a seemingly chaotic phenomenon in the developing cities of the Global South with unique mobility and operational characteristics. Eventually this wide-spread effect of minibus taxis will have to transition to electric vehicles. This paper examines the impact of this inevitable evolution on a city-wide scale in Kampala, Uganda. We present a generic simulation environment to assess the grid impact and charging opportunities, given the unique paratransit mobility patterns. We used floating car data to assess the energy requirements of electric minibus taxis, which will have a knock-on effect on the region's already fragile electrical grid. We used spatio-temporal and solar photovoltaic analyses to assess the informal and formal stops that would be needed for the taxis to recharge from solar PV in the region's abundant sunshine. The results showed that the median energy demand across all simulated days of the effect of taxis was 220kWh=d. This ranged to a maximum of 491kWh=d, with a median charging potential (stationary time) across taxis of 8 h=d to 12 h=d. The median potential for charging from solar PV ranged from 0:24kWh=m2 to 0:52kWh=m2 per day, across the taxis. Our simulator and results will allow traffic planners and grid operators to assess and plan for looming electric vehicle roll-outs to the most-used mode of transport in Africa.
    Use this URI to cite this item:
    https://hdl.handle.net/20.500.11951/954
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