TECHNOLOGIES GAS GLOBELEQ IS A LEADER IN GAS-FIRED GENERATION IN AFRICA. SONGAS, AZITO AND KRIBI POWER ALL USE NATURAL GAS TO PRODUCE ELECTRICITY. A gas turbine compresses air and mixes it with fuel in the combustion chamber. The air/fuel mixture is burned in the combustion chamber at high temperature. The hot exhaust gases are expanded through the turbine blades, making the rotor turn and hence drive also the compressor and the generator. This generates electrical energy by transforming the rotating mechanical energy. Gas turbines: Are able to supply reasonably large amounts of power compared to their size (high energy density) Have a long life with low maintenance cost per MWh generated Can be brought online to peak production levels in relatively short time (less than one hour) Use a wide range of fuels, but have more severe constraints on impurities. COMBINED CYCLE GAS TURBINES A combined-cycle power plant uses both a gas and a steam turbine together to produce up to 20 percent more electricity from the same fuel than a traditional open-cycle gas turbine plant. The waste heat from the gas turbine is routed to a heat recovery steam generator (HRSG), generating steam for the nearby steam turbine, which generates thus extra power. The gas turbine compresses air and mixes it with fuel in the combustion chamber. The air/fuel mixture is burned in the combustion chamber at high temperature. The hot exhaust gases is expanded through the turbine blades, making the rotor turn and hence drive also the compressor and the generator. The generator generates thus electrical energy by transforming the rotating mechanical energy. The steam from the HRSG is expanded in the turbine, and its generator converts the mechanical energy also into electrical energy. The electrical energy from all generators is passed through main transformers before being delivered to the electrical transmission network. AERO-DERIVATIVE GAS FIRED TURBINES Aero-derivative gas turbines are lighter in weight than classic gas turbines and have been derived from aircraft engines. They have exactly the same working principle as standard gas turbines and can be used in open or combined cycle processes. NATURAL GAS-FIRED RECIPROCATING ENGINES Natural-gas fired reciprocating engines are also commonly known as combustion engines. They convert the fuel energy to mechanical energy, which rotates a piston to generate electricity. 932 MW 60.3% PEPSI ENUGU 1.54MW CWAY 1.54MW BAT 6MW ROTOTECH (KGM) 1.16MW RIDA PLASTIC 2MW POWERGAS 3.75MW A & P FOODS LIMITED 2.9MW GENTEC 0.95MW NIGERIAN BREWERIES PLC 7MW TOWER POWER UTILITY LIMITED 15.75MW UPDC HOTELS 3.5MW NIGERIAN BOTTLING COMPANY – PORT HARCOURT 5.5MW NIGERIAN BOTTLING COMPANY – OWERRI 3.5MW NIGERIAN BOTTLING COMPANY – ASEJIRE 3.5MW NIGERIAN BOTTLING COMPANY – IKEJA, LAGOS 7MW AZITO 460MW KRIBI POWER 216MW SONGAS 190MW TOWER POWER UTILITY LIMITED 15.75MW NIGERIA WIND Wind energy is one of the oldest forms of energy generation. The speed, intensity, direction and duration of wind are determined by a number of factors including vegetation, surface water and topography. Wind turbines are erected in areas that are suited to harnessing prevailing winds. In the process, the kinetic energy generated by the movement of the blades is converted into mechanical energy, which is then turned into electricity by the wind turbine. This is transported to the electricity grid. By its very nature, wind varies and does not blow consistently all the time. This is why the location of wind turbines is so important. Erecting them in an area with prevailing winds ensures that the turbines can generate energy about 90 per cent of the time. When the wind speed reaches around four metres per second, the turbine blades will spin up to their operating speed, usually around 14 to 29 rpm (varies depending on the turbine model), and will start generating electricity. As the wind speed increases, so does the generator output, reaching a maximum capacity. The generator output will remain at this maximum capacity even if the wind speed increases further. However, at the cut-out wind speed, which is usually around 25 metres per second, the turbine will shut down to avoid damage. 165 MW 10.7% JEFFREYS BAY WIND FARM 138MW KLIPHEUWEL WIND FARM 27MW KLIPHEUWEL WIND FARM Klipheuwel Wind Farm is located 5km west of Caledon in the Overberg region of the Western Cape, in the Theewaterskloof Local Municipality. 27MW SOUTH AFRICA SOLAR GLOBELEQ HAS FIVE SOLAR POWER PLANTS IN SOUTH AFRICA, NAMELY ARIES SOLAR, DE AAR SOLAR, DROOGFONTEIN SOLAR, KONKOONSIES SOLAR AND SOUTPAN SOLAR. The sun produces more than enough energy to provide us with all our energy needs, but technology in the form of solar panels or photovoltaic (PV) modules is required to make it usable. Just like the solar panels on rooftops, hand-held calculators and even spacecraft, PV cells are made of two layers of semiconductor material, usually silicon. When sunlight hits the solar cells they create an electronic reaction. The voltage produced can drive a direct current with one side of the cell receiving a negative charge and the other receiving a positive charge. When a circuit connects the two sides, the electrons flow between them producing electricity. Connecting a number of solar cells electrically to each other and mounting them in a frame, makes a solar panel (photovoltaic module). The modules are connected together in arrays and the direct current (DC) generated is carried through wiring to an inverter, which converts the current to alternating current (AC). 285 MW 18.5% ARC SOLAR 66MW ARIES SOLAR POWER 11MW BOSHOF SOLAR POWER 66MW DE AAR SOLAR POWER 50MW DROOGFONTEIN SOLAR POWER 50MW KONKOONSIES SOLAR POWER 11MW SOUTPAN SOLAR POWER 31MW BOSHOF SOLAR POWER The 66 MW Boshof Solar plant is located in Boshof, 55 km north east of the town of Kimberley, in the Free State Province. 66MW SOUTH AFRICA HFO GLOBELEQ’S DIBAMBA POWER AND TSAVO PLANTS OPERATE ON HEAVY FUEL OIL (HFO). A HFO power plant effectively is a combustion engine which uses HFO as the main fuel (sometimes using light fuel oil (LFO) as backup fuel), generators and the auxiliary equipment needed for power production. The engine and the generator together constitute a generating set. The auxiliary equipment is mainly mounted on modular units. The engines have closed circuit cooling water systems with cooling radiators installed outside the power house. The thermal engine converts the thermal energy, produced by the combustion of a mixture of air and HFO/diesel supplied in volumes, temperatures and pressures controlled by a semi-automated servo system, into mechanical power. This power is transmitted by means of the engine’s shaft and then converted into electrical energy by a three-phase synchronous generator. 163 MW 10.6% DIBAMBA POWER 88MW TSAVO 75MW DIBAMBA POWER Situated in Yassa Village near Douala in Cameroon, Dibamba Power sells electricity to ENEO, the national utility. 88MW CAMEROON © GLOBELEQ 2021 TERMS OF USE CONTACT PRIVACY NOTICE COOKIE POLICY WEBSITE CREATED BY POWER OF 9