Today i attended the Practitioners’ Forum on Advancing the Optimization of Kenyan Industry with Energy Efficiency and Renewable Energy – Technologies and Case Studies hosted by the Delegation of German Industry and Commerce in Kenya. the German renewable energy sector is among the most innovative and successful worldwide and Kenya could learn a lot from from Germany on how to balance industrial development with a fairly balanced mix of energy sources.
However, Kenya's greatest challenge today remains achieving acceptable levels of power quality and reliability, based on well established principles of least-cost planning. Kenya is currently making major investments in generation and transmission of power in order to meet a target (not sure this is still a government priority as the country struggles with financial limitations ) however for benefits to be realized, similar levels of investment are required in the power distribution sub-sector and in its productive use (especially in the context of devolution).
Under the new constitution, power is supposed to be devolved to each of the forty seven counties. This is expected to result in more equitable sharing of resources across the country, with increased levels of investment particularly in the more remote counties that have historically been neglected. There exists wide ranging levels of household electrification across the country, from around 75 % of households in Nairobi County to less than 2 % of households in Tana River as an example. As electrification levels increase across the country following devolution, it is expected that the rate of increase will be highest in those counties that are currently poorly served with electricity infrastructure.
These two competing factors, first, achieving acceptable efficiency within the distribution network and secondly, ensuring an increase in the amount of energy consumed by the majority of Kenyans (first achieving universal access - then (secondly) ensuring that each user utilizes the power for productive purposes) will remain the determining factors for Kenya's goal of becoming a middle income, industrializing economy by 2030 (Vision 2030).
The challenge of achieving efficiency in the distribution network is mostly the mandate of Kenya Power, currently Kenya's only power utility company. Kenya Power currently operates the grid in four distinct regions; Nairobi, Coast, Western and Mt. Kenya. According to the utility, the Nairobi region network configuration is supplied from the transmission network via several 220/66 kV and 132/66 kV transmission substations or bulk supply points (BSPs). A number of 66 kV feeders emanate from each BSP and each 66 kV feeder supplies one or more primary (66/11 kV) substations. Each primary substation supplies a number of 11 kV feeders, which in turn supply 11/0.433 kV distribution substations. Larger customers may be supplied at 11 kV or 66 kV.
We may not go into the details of the whole Kenya Power system, but the distribution network in the regions outside Nairobi is less interconnected, with many radial 33 kV feeders and generally with long distances between BSPs. Standard BSP design typically consists of 2 x 132/33 kV two winding transformers, however some BSPs are equipped with only a single transformer. Many projects are currently underway including new substations and feeders and reinforcement of existing substations and feeders and are aimed at extending the distribution network to new areas to increase coverage and reinforcement of the existing network. This could accommodate demand growth and improve power quality and reliability.
However, the distribution network suffers from poor reliability and quality of supply, which is generally due to under investment especially in the regions outside of Nairobi. While Nairobi seems to have achieved a somewhat acceptable reliability, the regions require a bit more work. For example, because many parts of the network are supplied by long radial feeders with no alternatives, a fault within the network will have a widespread effect- be difficult to locate and often result in prolonged outages.
Because the losses must be paid for, they represent a proportion of the energy purchased by consumers. Furthermore, distribution infrastructure must be sized for both the delivered power and power losses. This is partly the reason why power is expensive in Kenya (the other reason is high taxes and surcharges over and above the basic costs). Unfortunately, this (first) challenge spills over to the second issue which is to ensure productive use of power by Kenyans (even if universal access is eventually attained).
2018 saw an increase in the number of Kenyan companies reporting power outages. Over 90 per cent of the businesses report outages with a fifth of them currently suffering from severe blackouts. Also, high costs of power and unreliable supply could slow down key sectors critical to Kenya's industrialization. A country’s per capita consumption of electricity should at least be 300 kilowatts per hour to enable it to industrialize. At the moment, Kenyans on average consume about 164 units of electricity, which would mean that they need to double their productive use ( at least in the urban areas) of power for Kenya to be ready to industrialize.
Kenya also needs to take advantage of her high literacy levels among citizens (over 75%) , develop more industry based productivity through the creation of sustainable industrial initiatives, push for improved urban infrastructure especially in transportation, housing and health as well as (accelerate access to and) automate utility services in the rural areas.
These interventions could help Kenya attain industrial development by quadrupling the net Per-Capita of energy consumed by her citizens.
Kennedy Gumbe
www.trd.co.ke