- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 04 Nov 2020
The equation for power is often written as:
Power = work/time
According to the International System of Units (SI), the unit of power is the joule per second (J/s), which is also known as a ‘watt’ (named after James Watt, the inventor of the steam engine condenser). Another measurement is horsepower, in which power is compared to the power of a notional horse.
Mechanical power is typically described as the time derivative of work, and is the combination of forces and movement.
Power can also relate to electricity; specifically, electrical power is the rate per unit time at which an electric circuit transfers electrical energy. The term 'power generation' describes the process of generating electrical power, and electric generators, or sources such as electric batteries, are commonly used to provide electrical power.
See also: Electrical power.
 Related articles on Designing Buildings Wiki
- Alternating current and direct current
- Battery storage.
- Combined heat and power.
- Community energy network.
- Domestic micro-generation.
- Electrical power.
- Electricity supply.
- Energy consumption.
- Energy storage.
- Kilowatt hour.
- Not a choice between renewables and nuclear - we need both.
- On-site generation of heat and power.
- Power factor for lamps.
- Power generation.
- Power over ethernet.
- Power over USB.
- Renewable energy.
- Tidal lagoon power.
- Uninterrupted power supply for buildings.
Featured articles and news
TASC/CIOB study looks at post-pandemic struggles and trends.
The Government announces recalibrated goals.
ECA proposes strategies for the present and the future.
Paul Morrell to lead independent review of the construction products testing regime.
Standard will help employers foster wellbeing and manage psychosocial risks.
Global fire standards for safety of people and property.
An introduction to the 5 core principles of lean.
Can the profession use its skills to save the world from climate change?
How faulty science resulted in sanitation reform.
Improving facilities, accessibility and overall appearance.
Free download of TG 12/2021 available.
TESP works with The Youth Group to form skill sharing network.
Big tech collaborates on platform for the built environment.
Letter signed by 21 organisations sent to MHCLG.
Click the button to subscribe.