Electric Power

Definition of Electric Power

Electric power is the rate at which electrical energy is transferred or consumed by a circuit, device, or system. It is measured in watts (W) and is calculated by multiplying voltage (volts) by current (amperes). Electric power is essential for the functioning of various electronic devices, appliances, and machines in residential, commercial, and industrial settings.


The phonetics of the keyword “Electric Power” can be represented as:ɪˈlɛktrɪk ˈpaʊər

Key Takeaways

  1. Electric power is the rate at which electrical energy is converted into other forms of energy or transferred to an electrical load.
  2. It is typically generated at power plants using various generation methods such as fossil fuels, nuclear energy, or renewable sources like wind and solar energy.
  3. Electric power grids distribute the generated electricity to homes, businesses, and industries, ensuring a reliable and controlled supply to meet the demand of the consumers.

Importance of Electric Power

Electric Power is a crucial technology term as it represents the rate at which electrical energy is transferred or converted in an electrical circuit.

It plays an essential role in the functioning of everyday electrical appliances and devices, such as lights, heaters, motors, computers, and smartphones.

Electric Power is measured in watts (W) and is responsible for driving our modern economy, enabling us to harness and exploit various energy resources efficiently.

The generation, transmission, and distribution of electric power powers industries, supports infrastructure, and enables advancements in science, technology, and communication that redefine our quality of life and ensure a sustainable future.


Electric power serves as an essential element in modern society, primarily fulfilling the purpose of converting various energy sources into electrical energy. This energy is utilized in various applications, ranging from daily household necessities to industrial processes. The discovery of this phenomenon revolutionized the world and brought enormous advancements in communication, transportation, lighting, and entertainment, among many others.

Our contemporary era, often coined as the ‘electronic age,’ strongly relies on electric power to meet diverse energy demands by facilitating energy distribution and regulating energy flow to ensure efficient utilization of resources. Primarily derived from sources such as coal, natural gas, nuclear, hydropower, solar, and wind, electric power underpins a multitude of sectors in our modern world. For households, it powers essential appliances, lighting, and heating systems, making our daily living more comfortable and convenient.

As for industrial and commercial sectors, electric power fuels machinery, conveyance systems, and computing infrastructure, leading to increased productivity and innovation. Moreover, electric power supports advances in healthcare, space exploration, and telecommunication, interconnecting people and services at an unprecedented scale. With ongoing research focusing on clean and renewable sources of electric power, it continues to foster sustainable development, paving the way for a more connected, efficient, and greener future.

Examples of Electric Power

Power Grids: One of the most prominent real-world examples of electric power technology is the power grid, which comprises power plants, transmission lines, and distribution centers. Power grids generate electricity through various methods (such as coal, natural gas, nuclear, solar, or wind) and transport it across long distances via high-voltage power lines. Finally, the electricity is distributed to homes and businesses to power appliances, devices, and infrastructure.

Electric Vehicles: Electric vehicles (EVs) are automobiles powered by electric motors that draw electricity from on-board rechargeable batteries. EVs are a major example of electric power technology, as they offer a cleaner and more efficient transportation method compared to traditional internal combustion engine vehicles. Pioneered by companies like Tesla, Nissan, and Chevrolet, electric vehicles are becoming more prevalent worldwide, supported by public charging infrastructure and advances in battery technology.

Renewable Energy Systems: Electric power technology plays a significant role in renewable energy systems, such as solar panels and wind turbines. Solar panels harness sunlight and convert it into electricity through the photovoltaic effect, while wind turbines capture kinetic energy from wind and convert it into electrical power. Both technologies generate clean electricity, contributing to reduced reliance on fossil fuels and lower greenhouse gas emissions. Solar and wind power installations are often interconnected with the power grid or can be used in stand-alone systems, such as residential rooftop solar panels and off-grid applications.

FAQ – Electric Power

What is electric power?

Electric power is the rate at which electrical energy is transferred or converted into other forms of energy, such as heat, light, or mechanical energy. It is measured in watts (W) and is typically used to describe the output of generators, electrical motors, and other electrical devices.

How is electric power generated?

Electric power can be generated through a variety of methods, including burning fossil fuels like coal, oil, or natural gas; harnessing renewable energy sources like solar, wind, or hydroelectric power; or utilizing nuclear energy. The energy generated is then sent through a network of transmission lines and transformers before reaching homes and businesses.

What are the different types of electric power plants?

There are several types of electric power plants, including thermal power plants, which generate electricity by burning fossil fuels; hydroelectric power plants, which use flowing water to turn turbines and generate electricity; and nuclear power plants, which produce electricity through nuclear fission reactions. Additionally, there are renewable energy sources such as solar power plants, wind farms, and geothermal power plants.

How can I reduce my electric power consumption at home?

There are several ways to reduce electric power consumption at home, such as turning off lights and devices when not in use, investing in energy-efficient appliances, properly insulating your home, using natural light during the day, and using timers or smart devices to control power usage efficiently.

What is the difference between electric power and electrical energy?

Electric power refers to the rate at which electrical energy is transferred or converted, while electrical energy is the potential energy stored in an electric field or carried by an electric current. Essentially, electric power is the measure of how quickly electrical energy can be transformed or utilized.

Related Technology Terms

  • Voltage
  • Current
  • Resistance
  • Power Grid
  • Renewable Energy

Sources for More Information


About The Authors

The DevX Technology Glossary is reviewed by technology experts and writers from our community. Terms and definitions continue to go under updates to stay relevant and up-to-date. These experts help us maintain the almost 10,000+ technology terms on DevX. Our reviewers have a strong technical background in software development, engineering, and startup businesses. They are experts with real-world experience working in the tech industry and academia.

See our full expert review panel.

These experts include:


About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

More Technology Terms

Technology Glossary

Table of Contents