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DRAFT FINAL REPORT: PJ DAVE COGEN FEASIBILITY STUDY

By

AFREPREN/FWD

EXECUTIVE SUMMARY


Bio Power Systems Limited (BSL) has been engaged by Energy, Environment and Development Network for Africa (AFREPREN/FWD) in partnership with PJ Dave Flowers Ltd (PJD) to scale up energy efficiency at PJ Dave Flowers. The kick off meeting of the Cogen Feasibility study project was hosted by PJ Dave Flowers Ltd. in the company’s board room on 14/3/2017. The main objective of the Project is to provide P J Dave Flowers Ltd with advice on the renewable energy options that can be developed on the farm leading to reduction on the dependence on the national electricity grid and fossil fuels for productive energy supply. The team has visited the various sections of the 45-ha flower farm located at Isinya (Latitude 1.688093°, Longitude 36.859901° Elevation 1,639m) about, 60km south of Nairobi in Kajiado County along the Athi River–Kajiado road.

The main sources of energy at the farm are electricity and fossil fuel. Electricity –This is the main source of energy which is supplied by the national grid. This is supplied to the farm through four metered supply points. Fossil Fuel –Energy derived from both diesel and kerosene has a significant contribution in the production at the farm. Diesel for Power generation–This is used to run stand by generators during times of grid power outages. A total of 1450kVA diesel generators have been installed at three locations on the farm: Kerosene- This is used to power the boiler for heating water mainly for the propagation green houses. The kerosene boiler is operated every day to maintain the temperatures in the propagation greenhouses above 28oC. Biogas – Used in a biogas generator that is connected to two borehole pumps. However, the digester is currently under rehabilitation and one borehole has been shut down because of low water yield arising from the prevailing dry season.

The internal grid network requires to be audited to establish integrity of connections also using non-intrusive measuring technologies like infra-red thermal imaging. Drawings of the entire reticulation network should be maintained and updated as and when changes occur. Where there are more than one grid power supply (such as pack house 2 with three supplies) the anomaly should be corrected to comply with the KP regulations. Any under sized cables should be upgraded according to the load demands. Such works to be undertaken by registered electrical contractors. .

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