Percentage of the total energy input that does useful work and is not converted into low-quality, usually useless heat in an energy conversion system or process. See energy quality, net energy. Compare material efficiency.
Reduce the amount of energy/electricity used to perform the same function more efficiently. Refer to Energy Conservation.
The reduction of energy use by end-use devices, systems, equipment and appliances. Energy efficiency measures, programs and regulations reduce overall electricity consumption without explicit consideration of the timing of these savings. They are generally achieved by substituting technically more advanced equipment to produce the same level of service with less electricity. Examples include energy-efficient appliances, lighting, heating and cooling, efficient building design and advanced motors.
occurs when less energy is used to generate the same or higher levels of output
Increasing the energy efficiency of DOE buildings, laboratories, and production facilities received new emphasis following the 1999 pollution prevention energy efficiency leadership goals.
One way of reducing greenhouse gas emissions. By cutting down on the energy our society needs to grow and develop, we can reduce the amount of greenhouse gas emissions. Simple steps like replacing older incandescent bulbs with new compact fluorescent lights can save 75% of your lighting energy needs.
A broad term referring to the use of less energy to perform a task. Energy intensity specifically refers to the amount of energy use per unit of activity. (Source: Government of Canada Climate Change Site, Glossary of Climate Change Terms)
Energy efficiency does the same amount of work but uses less energy.
The act of using less energy/electricity to perform a given function, as distinguished from conservation, which implies accepting less. Energy efficiency efforts differ from DSM programs in that the latter are focused on impacting the peak rate of usage, as versus the quantity of energy used to perform a function. Many people use these terms interchangeably, which is often incorrect.
Energy efficiency means using less energy to perform the same function.
Efficient use of energy or ‘doing more for less energy’ e.g. using CFL lamps (Compact Fluorescent Lamps) instead of incandescent lamps; using 32-watt lamp with electronic ballast instead of traditional 40-watt with magnetic ballast, etc.
Measures undertaken as part of Demand-Side Management to reduce the consumption of electricity for a specific task or function.
Using less energy while getting more service from your appliances and equipment. You can do this by practicing energy-efficient behaviors or using energy-efficient technology, such as new lights and appliances.
Reducing energy or demand requirements without reducing the end-use benefits.
The ratio between the consumption of energy and a given quantity; usually refers to the amount of primary or final energy consumed per unit of gross domestic or national product.
Using less energy to achieve the same or greater levels of output.
The term refers to the practice of constructing and arranging of buildings in such a way as to minimise the use of resources. It can also refer to the operation of machines and engines such as the car. Energy efficiency should reduce both use of resources and damage to the environment due to energy generation and consumption.
Energy efficiency refers to products or systems designed to use less energy for the same or higher performance than regular products or systems. Energy-efficient buildings are designed to use less energy than traditional buildings; see green buildings for details. Saving energy through efficiency also saves money on utility bills and protects the environment by reducing fossil fuel consumption and emissions. Combining energy efficiency with renewable energy is even better for the environment.
Products or systems designed to use less energy for the same or higher performance. It can also save money on utilities by being less reliable on fossil fuels and depending more on renewable resources.
The more efficient use of energy in order to reduce economic costs and environmental impacts. Using less energy/electricity to perform the same function.
Refers to programs that are aimed at reducing the energy used by specific end-use devices and systems, typically without affecting the services provided. Such savings are generally achieved by substituting technically more advanced equipment to produce the same level of end-use services (e.g. lighting, heating, motor drive) with less electricity.
Programs that reduce consumption.
the means of using less energy in doing the same amount of work
Programmes that reduce energy consumption whilst maintaining a given level of output.
Refers to products or systems using less energy to do the same or better job than conventional products or systems. Energy efficiency saves energy, saves money on utility bills, and helps protect the environment by reducing the amount of electricity that needs to be generated. When buying or replacing products or appliances for your home, look for the ENERGY STAR® label - the national symbol for energy efficiency. For more information on ENERGY STAR® labeled products, visit the ENERGY STAR® Web site.
Do you need to keep cool or warm air in? Or out? Beauty and practicality should live in harmony. Simply put, if you live in the foothills, a snazzy window shade that doesn't insulate is about as useful as a silk shirt in a blizzard. Good choices for energy efficiency include honeycomb shades and shutters. If price is an issue, you may want to consider honeycomb shades which are relatively inexpensive and come in colors to match every decor. Honeycomb shades actually increase energy efficiency by trapping air between the layers of the shade. Their unique design will help keep your home evenly heated or cooled. Honeycomb shades can easily be raised or lowered and come in several layers to control light, heat, and noise. If your budget permits, shutters are ideal for windows that require added protection from heat or cold. Always an elegant choice, wood or vinyl shutters offer timeless beauty and can be purchased in a variety of finishes and styles.
The percentage of total energy input that does useful work and is not lost or converted to low temperature, usually useless, heat. With the growing concern for declining energy resources, rising energy costs and the impact of large-scale energy consumption on the environment, the term refers to, for example, the willingness of society to change its user habits so that less energy is wasted.
the measure of the amount of energy which any technology can convert to useful work; technology with a higher energy efficiency will require less energy to do the same amount of work.
Using less energy/electricity to perform the same function. Programs designed to use electricity more efficiently -- doing the same with less. "Energy conservation" is a term which has also been used but it has the connotation of doing without in order to save energy rather than using less energy to do the some thing and so is not used as much today. Many people use these terms interchangeably.
The use of less fuel to make your home comfortably warm. Warmboard is an excellent example of an energy efficient product because it lowers the temperature of the air near the ceiling, eliminates air drafts, and warms you more directly through radiant heat transfer. Because Warmboard uses high conductivity aluminum to transfer heat, it works efficiently with very low supply water temperatures.
The reduction of electrical consumption via upgrades and/or retrofits while retaining the same output or performance
The ratio or percentage of useful work or energy output to total work or energy input in any energy system. For example, the efficiency of a home heating system is equal to the percentage of energy in the fuel or other source that is converted into useful heat. See Efficiency, Efficient, Inefficient.