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  2. Flat rate - Wikipedia

    en.wikipedia.org/wiki/Flat_rate

    A "flat rate" (more accurately known as fixed rate) for electricity is a fixed price per unit , not a fixed price per month, and thus different from that for other services. An electric utility that charges a flat rate for electricity does not charge different rates based upon the demand that the customer places on the system.

  3. Utility ratemaking - Wikipedia

    en.wikipedia.org/wiki/Utility_ratemaking

    P(t) is the price in time t. RPI is the rate of inflation. X is the efficiency factor (X-factor). P(t-1) is the price in time (t - 1). Since the price is set with regard to the overall inflation rate (RPI) and required growth of efficiency (X-factor), such kind of regulation is also called RPI-X regulation.

  4. Volumetric pricing - Wikipedia

    en.wikipedia.org/wiki/Volumetric_pricing

    Volumetric pricing requires metering that can be expensive to implement, especially in the case of irrigation, alternatives include: [2] [3] [4] flat rate; per-area pricing, coupled with tiered pricing; a system of water rights or quotas; input pricing as a percentage of the cost of certain input(s), e.g., seed;

  5. Pay-per-click - Wikipedia

    en.wikipedia.org/wiki/Pay-per-click

    There are two primary models for determining pay-per-click: flat-rate and bid-based. In both cases, the advertiser must consider the potential value of a click from a given source. This value is based on the type of individual the advertiser is expecting to receive as a visitor to their website, and what the advertiser can gain from that visit ...

  6. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    The HVAC industry was historically regulated by the manufacturers of HVAC equipment, but regulating and standards organizations such as HARDI (Heating, Air-conditioning and Refrigeration Distributors International), ASHRAE, SMACNA, ACCA (Air Conditioning Contractors of America), Uniform Mechanical Code, International Mechanical Code, and AMCA ...

  7. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    However, the variable price of oil on world markets leads to erratic and high prices compared to some other energy sources. Institutional heating systems (office buildings or schools, for example) can use low-grade, inexpensive bunker fuel to run their heating plants, but capital cost is high compared to more easily managed liquid fuels.

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