### ratio | efficiency:

Energy efficiency
* affects the service energy intensity.
* benefits the environment through a lower consumption of electricity.
* can do much to reduce energy demand
  - have an effect on overall community sustainability
  - include both energy saving and active and passive solar technologies
  - mean fewer emissions which contribute to global warming
  - reduce greenhouse gas emissions and create direct and indirect jobs
* critical issue for affordable housing.
* cuts the emissions contributing to global warming.
* has hard consequences, it defines life and death
  - the added benefit of lowering household utility bills
* helps cut our dependence on foreign energy sources and preserve our economy
  - residents and businesses lower their electricity bill
* increases the initial cost of a home.
* is also an immature technology.
* is an idea that everyone can love
  - important strategy to deal with energy demand
  - interesting and useful concept for analyzing energy use
  - determined by the highest ratio of energy consumption to product output
  - energy profit
  - often an inexpensive, quick and simple way to save money
* is one of the key strategies to make our economy more cost competitive
  - lowest cost strategies for reducing greenhouse gases
  - particularly difficult to measure in the transportation sector
* is the basis of good form
  - cleanest, safest, most economical way to begin to curb global warming
  - icing on the cake
  - smartest approach to hold down costs while still remaining comfortable
* key area where economic and environmental interests coincide.
* means fewer emissions which lead to global warming
  - significant savings on utility bills
* means using less energy to accomplish the same task
  - while achieving the same amount of comfort or service
* measure of economic competitiveness.
* offers the single most effective means to reduce carbon dioxide emissions.
* prevents the destruction of our Earth.
* profit maker.
* reduces emissions contributing to global warming
  - pollution to air, water, and land
  - the pollution created by running power plants
* refers to the energy input per unit of useful energy output.
* relative term, grounded in the mineral and water regime of the habitat.
* represents the second largest source of energy in the United States.
* requires boiler control systems to closely match steam supply with steam demand.
* saves money and the environment by reducing power plant pollution.
* saves money, benefits the economy, creates new jobs, and enhances human health
  - reduces pollution, and conserves resources
* subject of much interest in many countries, including Singapore.
* way of achieving the same services with less energy.
* winner for both the economy and the environment.
* works when our customers understand our programs.

Feed efficiency
* critically important topic in pork production.
* major determinant of feedlot profitability.

Fiscal efficiency
* deals with the ways in which LGUs are financed.
* is separate from economic efficiency.

Fuel efficiency
* decreases the emissions causing global warming.
* is one measure that is going south
  - the smart way to go for both the environment and the economy
* varies according to season, load, route and other factors.

High efficiency
* is one of the main advantages of the solid oxide fuel cell
  - particularly relevant in systems that can operate from batteries
  - the most common trait among farmers that choose nontraditional lenders
* translates to operating cost about one-third that of electric units.

Market efficiency
* critical concept in economics and finance.
* description of how prices in competitive markets respond to new information.

Mechanical efficiency
* evaluates energy conversion and energy converters.
* is expressed as a percentage and accounts for all mechanical friction losses.