
Gipahin nato ang sistema sa kuryente ngadto sa tulo ka bahin; pagbuhat sa kuryente, pagpadala, ug pagdistribute. Sa makasud nga artikulo, atong ipangutana ang pagbuhat sa kuryente. Tungod kay sa pagbuhat sa kuryente, usa ka form sa energia gipalit og elektrikal nga energia. Gitubo nato ang elektrikal nga energia gikan sa daghang natural nga pinagkun-an.
Gisulay nato kini nga mga pinagkun-an isip duha ka klase renewable sources ug non-renewable sources. Sa kasamtangan nga sistema sa kuryente, daghan sa elektrikal nga energia gitubo gikan sa non-renewable sources sama sa coal, oil, ug natural gases.
Pero limitado ra ang availability niining mga pinagkun-an. Busa, kinahanglan nato mapahimulos ang paggamit niining mga pinagkun-an ug palihugonon ta sa alternate source o molihok ta sa renewable sources.
Ang renewable sources nagsama sa solar, wind, water, tidal, ug biomass. Ang mga pinagkun-an mao ang environment-friendly, free, ug infinite resources available. Let us get more information about renewable sources.
Kini ang labing maayo nga alternative source para sa pagbuhat sa kuryente. Duha ang mga paagi, aron mogenerate og elektrikal nga energia gikan sa sunlight.
Mahimo nato ang electricity diretso pinaagi sa paggamit og photovoltaic (PV) cell. Ang photovoltaic cell gihimo gikan sa silicon. Daghan nga cells giconnect sa series o parallel aron magamit isip solar panel.
Mahimo nato ang heat (solar thermal) pinaagi sa paggamit og mirrors sa sunlight, ug gamiton nato kini nga heat aron magamit isip steam. Kini nga high-temperature steam mogira sa turbines.
Ang transmission cost zero para sa stand-alone solar system.
Ang solar electricity generation system environment-friendly.
Ang maintenance cost low.
Kini ideal source para sa remote locations nga dili mahimong link sa grid.
Initial expenses are high.
Require large area for bulk production.
Solar electricity generation system is weather-dependent.
Solar energy storage (battery) is costly.

Ang wind turbines gigamit aron mogamit sa wind energy ug i-convert niini isip elektrikal nga energia. Ang hangin mopadayon tungod sa temperature changes sa atmosphere. Ang wind turbines mogamit sa wind energy ug i-convert niini isip kinetic energy. Ang rotating kinetic energy mogira sa induction generator, ug ang generator na ika convert sa kinetic energy isip elektrikal nga energia.
Ang wind energy unlimited, free, ug clean source of energy.
Ang operating cost almost zero.
A wind electricity generating system can generate power in a remote location.
It cannot produce the same amount of electricity at all time.
It needs a big open area.
It makes noise.
The construction process of a wind turbine is expensive.
It gives lower electricity output.
It poses threats from flying birds.
Ang power obtained from river or ocean water is called hydropower. Hydro power plants are work based on the gravitational effects. Here we store water in a dam or reservoir. When we allow falling the water, the movement of this water as it flows downstream towards the penstock causes kinetic energy that rotates the turbines.
It can be used in the service instantly.
After this process, water can be used for irrigation and other purposes.
Dams are designed for an extended period and so it can contribute to the generation of electrical energy for many years.
Running and maintenance costs are low.
No fuel transportation is required.
The initial cost of a hydel power plant is high.
Hydropower plants are located in the hilly area, and it is very far from the load. So, they require a long transmission line.
The construction of dams can flood towns and cities.
It is also weather-dependent.
A thermal power plant produces electricity by burning coal in the boiler. Heat is used to convert water into steam. This high pressure and high-temperature steam flowing into the turbine spins a generator to produce electrical energy.
After it passes through the turbine, the steam gets cooled in a condenser and reuse in the boiler to generate steam again. Thermal power plant works according to Rankine cycle.
Coal is cheap.
It has less initial cost compared to renewable power plants.
It requires less space than a hydel plant.
We can construct a thermal power plant at any place because coal can be transport to the plant irrespective of its location.
Construction and commissioning of thermal power plants take lesser time than a hydel plant.