Power generation

The power generation business allows Celsia to produce an essential good that favors the economic development of the region and provides social welfare to its inhabitants. The good operation of generation assets is based on an efficient maintenance management, guaranteeing a level of competitive availability.

With an installed capacity of 1.810  MW, our Company has different technologies for electric power generation, the most important being hydroelectric, thermal, solar and wind power generation.


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Hydroelectric Power Plants

Hydroelectric power is generated by using water’s potential energy when taken from a river bed. The water is channeled to the powerhouse (where the generation turbine is located) through channeling pipes, where electricity is produced through the use of water turbines. The energy generated is sent to a substation where its voltage is increased. It is then sent to the power transmission lines. Celsia has currently run-of-river hydroelectric power plants and reservoirs.


  • Run-of-river power plants: this type of power plant uses part of a river’s flow to generate electricity. It operates continuously because, since it doesn’t have a reservoir, it doesn’t have any water storage capacity. Part of the river flow is diverted to the power plant through a tunnel or canal. The resource then goes through the hydroelectric turbines producing electricity with the use of generators. The water is then returned to its natural course.
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  • Hydroelectric power plants with reservoirs: these plants generate power through the use of stored water. The power generation process begins in the mountains with the accumulation of water in large damns or reservoirs. The water is brought to the reservoir through pipes, gaining speed due to gravity. The water finally arrives at the plant where it is used to spin turbines that move the generators.
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Thermoelectric Power Plants

Thermoelectric energy is generated through heat which is obtained from fossil fuels such as petroleum, natural gas, and coal derivatives. Basic thermoelectric power plants are configured around a boiler that burns fuel to generate heat. This heat is then transferred to a steam generator that evacuates water. The steam produced at high pressure and temperature expands within a turbine. This in turn moves, driving a generator that produces electricity.

This energy, generated at low voltage, is conveyed to a substation where it is converted to high voltage, and then sent through transmission lines. Our power plants use different sources of fuel.

These power generation systems can be simple cycle or combined cycle; the simple cycle (such as our Meriléctrica power plant in Barrancabermeja, Colombia), uses fuel to spin the turbine, while a combined cycle (such as Flores I and Flores IV located in the Celsia Free Zone in Barranquilla, Colombia, and in Bahía Las Minas, Colón, Panama), take advantage of the hot gases of the turbine from combustion of gas to move another generating turbine.

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Wind Power Plants

This power generation technology uses natural air currents to move large propellers which transmit the kinetic energy to an electrical generator. This machines are known as wind turbines.

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Photovoltaic Solar Energy

Sunlight is converted into electricity by solar modules, which in turn are made up of photovoltaic cells. The modules are located with a degree of inclination that varies according to the position of the Sun, so that the rays can be captured most of the time.

The electrical energy coming from the solar modules arrives at some inverters, which adapts it to the level of the voltage of a substation. Said energy is delivered to the National Interconnected System (SIN).

Actually, the company is advancing the Celsia Solar project with which 9 solar farms will be installed in the departments of Valle del Cauca, Bolívar, Santander, Cesar and in Panama, in the province of Chiriquí. These farms will generate a total of 200 MW.

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In Integrated Report 2019 you can find our management.