Solar Solutions
Burhani mosque, one of the largest mosques in old town Mombasa located near the harbor, was faced with the challenge of escalating power bills which had risen to the tune of kShs. 450,000 per month on average.
Davis & Shirtliff was approached to offer an affordable solution that would help reduce their power bills to manageable levels. Receiving an average solar radiation of 7kWh/m2/day, Mombasa is a very ideal location for solar-powered solutions, and we embarked to design a solar grid-tie system to complement power supply from the national grid with solar.
By the use of energy data logging equipment, we were able to estimate their daily energy use profile and designed a 50kW solar grid-tie solution, which primarily supplies electricity generated from the solar PV system. During days where the power demand exceeds what is supplied by the solar PV system, and at night where no solar power is generated, the grid-tie system then draws electricity from the national grid.
Employing solar energy to achieve grid parity for this project, has significantly reduced the mosque’s reliance on grid power and this has resulted in the reduction of their power bills by over 30%
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SYSTEM COMPONENTS
- SI8-OH-12 six units,2 units of Sunny TriPower 20000TL-30,
- 144 pieces of 315 watts pieces of solar panels ,48 No of 1899AH 2V Trojan Batteries
- ,Multi Cluster Box MC-BOX 6.3-11,
- 3 unit of Victron Charge Controller 150/85 .
The system was done in the following configurations;
We had a total No. of 144 watts solar panels. A set of 48 pieces of 315 watts Yingli solar panels
are connected in 3 strings each with two solar panels in series and 8 in parallel to generate
5,040 watts at 68.48Amps per string. This power was feed through 3 MPPT Victron charge controllers for charge regulation to a battery bank of 48V,1849A battery bank. The two other sets had 48 No. of solar panels connected in series parallel connection.3 rows of 16 No.
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OFF-GRID PV POWER PLANT, 15KW TO POWER A DESALANATION UNIT.
SYSTEM CONSISTS OF 45No . 330W PV SOLAR modules, 24no.2vdc batteries, 20kW SMA TRIPOWER STP20000 PV inverter,
3No.6kW SUNNY ISLAND battery inverter, 1No.Data Manager, 1No.8way
distribution board, 1no.change over Switch, 1no.router and
1no.3way battery fuse
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SUPPLIED AND INSTALLED 30KW CARPORT SOLAR GRID TIED SYSTEM. |
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The system was designed to reduce the power bills by utilizing solar power during the day. |
THE SYSTEM COMPRISED:
- 90NO. 330W SOLARWORLD MODULES,
- CARPORT STRUCTURE WITH ALUMINIUM SUPPORT STRUCTURES
- 2NO. SMA TRIPOWER STP1500TL TRIPOWER INVERTERS
- SOLAR HOME MANAGER FOR REMOTE MONITORING
THE SYSTEM PERFORMS VERY WELL AND THE COMPANY IS ABLE TO REDUCE THEIR POWER BILL BY ABOUT 30% AND THE SYSTEM IS EXPECTED TO HAVE A ROI OF 3YEARS.
The project was commissioned and handed over in presence of Coast GM
Mohamed Farook, Mtwapa Branch Manager Chris Muli , Michael Chola Solar
Technician, VTTI K LTD Maintenace Manager Benedict Namwamba and
Maintenance Engineer Ronald Odongo
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Busia County 132kW Solar Grid Connect Power Generation
Mundika Water Supply operates Mundika Treatment Plant which serves over 65,000 people, an equivalent of 7,500 households, in Matayos and Teso South Sub Counties.
The Water Supply Plant operates on electricity from the utility power supplier with some of the major loads consisting of 90kW induction motors, 30kW induction motors, 22kW induction motor for the blower, and 0.75kW synchronous motors for chemical stirrer. The County decided to undertake a Grid Tie Solar system to develop a reliable and efficient system that will use mostly solar energy during the day and electricity at night hence helping in reducing the power bills.
Davis & Shirtliff provided a 132kWp Solar Grid Tie System to power the Water Treatment plant. This was based on the available mounting space provided by the County. The system consists of
- 400 No. Yingli 330 Polycrystalline Solar panels,
- 5 No. SMA STP 25000TL-30 PV inverters
- Galvanished Steel 1m Ground Mount Solar Module Support Structure and
- An Energy Meter and SMA Data Manager for remote monitoring the system.
- Accessories, including Energy Meter, Combiner Boxes, Router and Modem and DC and AC Cabling
The system is expected to generate about 200MWh of solar energy annually hence will help in reducing the power bills significantly. The system generates power during the day which is directly consumed and any deficit is covered by the power from the utility power supplier. If solar is generating more than what is consumed, the monitoring device used is able to limit feeding back to the grid.
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LAMU WATER AND SEWERAGE COMPANY (LAWASCO) LTD PROJECT FOR Supply, Installation, Testing and Commissioning of Solar Pumping Set & 90KW SOLAR POWER GENERATION FOR SOLARISATION OF EXISTING REVERSE OSMOSIS PLANT Project Brief:
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Capacity of solution, no of people served, problem faced by customer, benefits of solution to customer. D&S was recently contracted by Total Kenya to review solar designs from different market players for the suitability in the installation and solarization of several Total Petrol stations in Nairobi and its environs.
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Dundori Road, Industrial Area
Nairobi
P.O Box P.O Box 41762 - 00100
Kenya
