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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. Minimum efficiency reporting value - Wikipedia

    en.wikipedia.org/wiki/Minimum_Efficiency...

    Two proprietary scales are used to rate sub-HEPA air filters. The Home Depot scale is known as filter performance rating (FPR), and is reduced from a 1–10 scale to only 4, 7, 9, and 10. It measures ability to capture large particles, small particles, and weight change over the lifetime of the filter.

  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. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    The refrigerant flow rate is changed by the change in the speed of the compressor. The turn down ratio depends on the system configuration and manufacturer. It modulates from 15 or 25% up to 100% at full capacity with a single inverter from 12 to 100% with a hybrid tandem.

  6. 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 ...

  7. 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.

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