Energy efficiency

Jump to navigation. Is contributing to the fight against climate change actually as easy as changing a light bulb? Granted, stemming the tide of global warming and rising sea levels is obviously more complicated than swapping in energy-saving LED bulbs. But energy efficiency is indeed an important—yet often underappreciated—tool to reduce pollution and waste. Thanks to efficiency measures, U. Energy conservation relies on people cutting back on activities that consume energy—by turning off lights or driving less or using appliances less often.

Energy efficiency harnesses technology to help avoid or reduce energy waste so that you can still turn on the lights, drive, or wash your clothes but use less energy doing so.

It really all comes down to smarter energy use. Using less energy through efficiency measures is good for the economy and your wallet. By reducing the amount of energy required for certain tasks, energy efficiency is also good for the planet. It can help to reduce air and water pollution caused by certain types of energy generation and avoid negative impacts on critical ecosystems—such as the obstacles a new hydroelectric dam could impose on migrating salmon. It can also relieve stress on the power grid.

Boosting energy efficiency in buildings, vehicles, and appliances and equipment is an inexpensive, low-impact way to reduce climate pollution on a grand scale. One extremely effective way to cut carbon dioxide CO 2 emissions is through a more efficient home. Widespread use of efficient appliances, electronics, equipment and lighting, along with better insulation and other weatherization, could cut million metric tons of carbon pollution a year by —equal to the electric power emissions produced by Texas, New York, Florida, Illinois, Virginia, and California in More than 2.

In fact, about one in every six construction jobs in the country is connected to energy efficiency. Energy-efficient appliances can save a U. People who live in the five least-efficient states Wyoming, North Dakota, Alabama, South Dakota, and Mississippi have seen their electric bills increase twice as much as those who live in the five most-efficient states California, Oregon, Connecticut, Vermont, and New Yorkaccording to rankings. Low-income urban households have an energy burden—the proportion of income spent on energy—three times higher than that of higher-income households, partially due to lack of weatherization.Energy efficiency simply means using less energy to perform the same task — that is, eliminating energy waste.

Energy efficiency brings a variety of benefits: reducing greenhouse gas emissions, reducing demand for energy imports, and lowering our costs on a household and economy-wide level.

While renewable energy technologies also help accomplish these objectives, improving energy efficiency is the cheapest — and often the most immediate — way to reduce the use of fossil fuels. There are enormous opportunities for efficiency improvements in every sector of the economy, whether it is buildings, transportation, industry, or energy generation.

Energy Efficiency: The Clean Facts

Building designers are looking to optimize building efficiency and then incorporate renewable energy technologiesleading to the creation of zero-energy buildings.

Changes in existing buildings can also be made to reduce energy usage and costs. These may include small steps, such as choosing LED light bulbs and energy efficient appliances, or larger efforts such as upgrading insulation and weatherization. This increases the energy efficiency of power generation from approximately 33 percent to up to 80 percent. The smart grid is another system that will improve the efficiency of electric generation, distribution, and consumption. Neighborhoods that are designed with mixed use developments and safe, accessible options for walking, biking, and public transportation are key to reducing the need for personal vehicle travel.

More energy efficient vehicles require less fuel to cover a given distance. This generates fewer emissions, and makes them significantly less expensive to operate. Plug-in hybrids and fully electric vehicles are particularly fuel efficient. Freight can be moved more efficiently by improving the efficiency of rail and truck transportation and by shifting long-distance freight transport from trucks to rail.

The four strategies above improve energy efficiency primarily through technology and design. However, the way people use these technologies will significantly impact their effectiveness. How does driving behavior and unnecessary idling impact gas mileage?

How many people will use public transportation if there is a cultural stigma against it? Research has shown that 30 percent of the potential energy savings of high efficiency technologies is lost due to a variety of social, cultural, and economic factors. Addressing these factors is also an important component of making our economy more energy efficient.

View more entries tagged as Energy Efficiency. Energy Efficiency.Energy efficiency means you are using less energy to do the same jobs, reducing your home's energy waste and saving money. To effectively increase your energy efficiency involves more than just using less energy - it requires you becoming aware of how energy is used, where it's wasted, and how it can be used more effectively and efficiently in everyday life.

Here are some top tips to help your home or business save energy and be more efficient. Our home protection products cover all the appliances and home systems you count on every day, plus a network of expert technicians who will be there when you need them. The Direct Energy Learning Center is your trusted source for a wide range of home-related topics such as energy efficiency, energy safety tips, weather preparedness, and more.

If possible, wash your clothes in cold water. Clean or replace all filters in your home regularly. Dirty filters make your system work harder and run longer than necessary. Use your microwave instead of your stove when cooking. During warmer months, close blinds, shades and drapes on the sunny side of your home to help keep your home's temperature cooler and reduce the work for you AC. Open shades during cooler months to let the sun warm your home.

Don't peek in the oven while baking! Every time you peek, the temperature can drop 25 Fmaking your oven use more energy to bring the temperature back up. Use natural light when possible.

Control your fixtures with a photocell or a timer to assure dusk-to-dawn only operation of your outdoor lights. Don't leave your computer on all day long. Only turn on your computer, monitor, printer and fax machine when you need them. Setting your thermostat to a lower temperature than normal will not cool your home faster.

Refrigerators and freezers actually operate most efficiently when full, so keep your refrigerator and freezer as full as possible using water bottles if nothing else. Be careful about overfilling them as this will reduce airflow and cause the appliance to work harder. Turn off heated dry on your dishwasher and air dry instead.

Energy Efficiency in 90 seconds

Set your refrigerator temperature to the manufacturer's recommendation to avoid excessive cooling and wasting energy. Don't leave bathroom or kitchen ventilation fans running longer than necessary. They replace inside air with outside. If your home has single-pane windows, consider replacing them with more energy efficient windows, or adding solar shades or tinting film. Adjust the thermostat only to the desired temperature.

Your home won't heat or cool faster by cranking it up. Install a programmable thermostat that will automatically adjust the temperature according to your schedule. Turn off the lights when they're not in use.

Don't leave your mobile phone plugged in overnight. It only takes a couple of hours to charge. Turn off the oven a few minutes before cooking time runs out.

energy efficiency

Your food will continue to cook without using the extra electricity.We work to improve the energy-saving features of our hardware product portfolio to help our customers save energy. Use of electronic devices inevitably involve energy consumption. Microsoft is committed to reducing the direct effects caused by the energy use of our products, including battery chargers. Microsoft devices meet the US Department of Energy, California, and other regional and country-specific efficiency requirements.

We work to improve energy-saving features throughout our product portfolio, including the use of energy-efficient chargers, to help our customers save energy. Small steps make a big difference. All our devices come with power-saving standby settings. An important part of our business strategy includes reducing the energy consumed by our game consoles within a generation while maintaining the same level of gaming power.

For example, since the launch of Xbox inour engineering teams have successfully reduced standby power by a factor of 10 to less than three-tenths of a watt, resulting in a 60 percent reduction in energy use.

Our development and compliance engineers ensure all our products meet regulatory requirements such as the Ecodesign Directive. Carrying lessons learned from Xbox forward, we continued our commitment to reduce energy usage through the design of Xbox One, launched in Xbox One provides eight to 10 times the processing power of Xbox Despite this significant increase, the electrical power required for gaming is 30 percent less than that of its predecessor when it launched in Power needed for media play and dashboard is half that of the Xbox at launch.

Other efficiencies are gained by providing the user with choices about console functionality while in standby mode. We worked with other console manufacturers to develop responsible requirements to achieve that goal.

The resulting initiative is the form of a design specification for Xbox and Xbox One. This Voluntary Agreement is a joint commitment by the game console manufacturers, which is estimated to deliver collective energy savings in the EU of one TWh per year by This corresponds to the annual electricity consumption for more thanhouseholds. Our current products fully meet the requirements in the Voluntary Agreement. In November ofthe Voluntary Agreement was reviewed by the Consultation Forum of the EU and found to be meeting its commitments to reduce energy usage, exceeding the original estimate of one TWh per year by five TWh per year.

Environmental Protection Agency and the U. Department of Energy aimed at saving money and protecting the environment through energy efficient products and practices. Reduced electrical consumption can contribute to potential financial savings, a cleaner environment, and the reduction of greenhouse gas emissions. E TEC value kWh and capability adjustments applied when all discrete graphics cards dGfx are disabled and if the system is tested with switchable graphics mode with UMA driving the display.

E TEC value kWh and capability adjustments applied when all discrete graphics cards dGfx are enabled. The minimum number of loading cycles that the batteries can withstand applies only to notebook computers.

The duration of idle state condition before the computer automatically reaches sleep mode, or another condition which does not exceed the applicable power demand requirements for sleep mode. The length of time after a period of user inactivity in which the computer automatically reaches a power mode that has a lower power demand requirement than sleep mode.

The length of time before the display sleep mode is set to activate after user inactivity. User information on the energy-saving potential of power management functionality. Surface 3 and Surface Pro 3 are preset with a power plan that automatically balances performance with energy consumption. This plan will put the computer to sleep after 10 minutes of inactivity when plugged in.Energy Efficiency circle-arrow.

The authoritative tracker of global energy efficiency trends. Energy efficiency is changing, with new digital technologies enabling greater control, optimisation and analytics. Tracking trends in spending on research, development and demonstration. Towards a zero-emissions, efficient and resilient buildings and construction sector. Access to affordable, reliable, sustainable and modern energy for all.

The Global Commission for Urgent Action on Energy Efficiency will examine how progress on energy efficiency can be rapidly accelerated through new and stronger policy action by governments across the globe. It will develop a series of actionable recommendations that will be announced in the summer of Thank you for subscribing.

You can unsubscribe at any time by clicking the link at the bottom of any IEA newsletter. IEA Skip navigation. Close Search Submit. Energy efficiency. Global energy efficiency improvements are slowing Inprimary energy intensity - an important indicator of how much energy is used by the global economy - improved by just 1.

This was significantly slower than the 1. Fuel report Energy Efficiency The authoritative tracker of global energy efficiency trends. November Read more Read more Read more Read more. Article Energy efficiency and digitalisation Energy efficiency is changing, with new digital technologies enabling greater control, optimisation and analytics.

March Read more Read more Read more Read more. Statistics report Energy Efficiency Indicators December Read more Read more Read more Read more. October Read more Read more Read more Read more.

Commentary Energy efficiency can boost economies quickly, with long-lasting benefits By Brian Motherway and Michael Oppermann 8 April Energy Efficiency covers wide-ranging topics related to energy efficiency, energy savings, energy consumption, energy sufficiency, and energy transition in all sectors across the globe.

Coverage includes energy efficiency policies at all levels of governance enabling social, organizational, and economic factors of sufficient and efficient behavior and decisions; analysis and modeling of energy efficiency performance, measures, policies, outcomes, and impacts; energy management systems and energy services; the role of energy efficiency and demand-side management in energy planning, energy markets and risk assessment; local sustainable energy planning; energy behavior; acceptability of policy, technology, and new energy systems; and emerging technologies and approaches to improve energy efficiency.

Energy Efficiency editors welcome new and original work that contributes to our knowledge of energy efficiency and energy savings and that offers broad implications for energy efficiency within the transition to a more sustainable energy system.

Editors will only consider clearly written, broadly applicable and accessible submissions that contain a novel element, issue, approach, method or result and that inspire progress in actual energy efficiency gains and energy savings.

Areas of current interest include. Issue 2, February As a result of the significant disruption that is being caused by the COVID pandemic we are very aware that many researchers will have difficulty in meeting the timelines associated with our peer review process during normal times. Please do let us know if you need additional time.

Top 25 Quick & Easy Energy Saving Tips

Our systems will continue to remind you of the original timelines but we intend to be highly flexible at this time. Rights and permissions. Springer policies. Latest issue. A global level analysis of environmental energy efficiency: an application of data envelopment analysis Authors Ipsita Rakshit Sabuj Kumar Mandal Content type: Original Article Published: 03 April Are the energy savings of the passive house standard reliable?

A review of the as-built thermal and space heating performance of passive house dwellings from to Authors first, second and last of 5 David Johnston Mark Siddall Wolfgang Feist Content type: Original Article Published: 18 March This journal has open access articles.

View all articles. Journal updates COVID and impact on peer review As a result of the significant disruption that is being caused by the COVID pandemic we are very aware that many researchers will have difficulty in meeting the timelines associated with our peer review process during normal times.

Explore Online first articles Volumes and issues Collections Sign up for alerts. Taxes will be calculated during checkout. Electronic ISSN We've made some changes to EPA. Improving energy efficiency is one of the most constructive and cost—effective ways to address the challenges of high energy prices, energy security and independence, air pollution, and global climate change.

The many benefits of energy efficiency include:. Department of Energy to create a sustainable, aggressive national commitment to energy efficiency through the collaborative efforts of gas and electric utilities, utility regulators, and other partner organizations.

In the energy efficiency field, a "potential study" is a quantitative analysis of the amount of energy savings that either exists, is cost—effective, or could be realized by implementing energy efficiency policies and programs in a state or region.

energy efficiency

Energy efficiency potential studies can be an effective tool for building the policy case for energy efficiency, evaluating efficiency as an alternative to supply side resources, and formulating detailed program design plans.

States have adopted various policies that support greater investment in and adoption of energy efficiency. The policies outlined below have been implemented successfully by multiple states. Energy efficiency policies are the most common drivers of investment in energy efficiency programs, as described below. Cost—effective energy efficiency programs have been operating successfully in some parts of the country since the late s and have a history of proven energy savings.

These programs have succeeded across many different contexts: regulated and unregulated markets; utility, state, or third-party administration; investor-owned, public, and cooperative utilities; and gas and electric utilities. Funding and financing options vary depending on the program delivery provider and goals. Evaluation is the process of determining and documenting the results, benefits, and lessons learned from an energy efficiency program.

Evaluation results can be used in planning and improving future programs and determining the value and potential of a portfolio of energy efficiency programs in an integrated resource planning process. It can also be used to retrospectively determine the performance and resulting payments, incentives, or penalties of contractors and administrators responsible for implementing efficiency programs.

Energy efficiency evaluations are also conducted to estimate energy savings attributable to a program in a manner that is defensible in utility regulatory proceedings. Combined heat and power CHPalso known as cogeneration, is an efficient, clean, and reliable approach to generating power and thermal energy from a single fuel source, resulting in enhanced fuel efficiency and greenhouse gas emission reductions. The partnership works closely with energy users, the CHP industry, state and local governments, and other clean energy stakeholders to facilitate the development of new projects and to promote their environmental and economic benefits.

The Guide to Action provides in—depth information about over a dozen policies and programs that states are using to meet their energy, environmental, and economic objectives. Policies addressed in the guide include energy efficiency portfolio standards, public benefits funds for energy efficiency, building codes and appliance standards, utility policies, and lead by example initiatives. The Department of Energy offers numerous resources to help state and local governments and their stakeholders understand the wide range of energy efficiency opportunities that could support their climate and energy goals.

View catalog of state-level EE potential studies, technical resources to understand the energy and carbon savings from efficiency, technical assistance, and more. Learn about their resources.

The initiative includes a manual, training, tools and technical assistance. The State and Local Solution Center provides state and local government officials with resources addressing energy planning, policy, financing, data management, and technologies to help them implement successful energy efficiency and renewable energy projects. The Home Energy Yardstick is an online tool for individuals to compare their households' energy use to others across the country and to get recommendations for improvement.

Portfolio Manager is an online tool you can use to measure and track energy and water consumption, as well as greenhouse gas emissions. Use it to benchmark the performance of one building or a whole portfolio of buildings, all in a secure online environment. Contact Us to ask a question, provide feedback, or report a problem.

energy efficiency

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