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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. Invoice price - Wikipedia

    en.wikipedia.org/wiki/Invoice_price

    This is the price businesses charge to trade buyers. This is their cost price plus a markup or profit margin. As a guideline: this is normally around 2 x the cost price. But if the cost price is relatively high then it’s less. So for example, if your cost price would be £150, then your trade/wholesale price would be around £250.

  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. Glossary of HVAC terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_HVAC_terms

    An HVAC system that has a stable supply-air temperature, and varies the air flow rate to meet the temperature requirements. Compared to constant air volume systems, these systems conserve energy through lower fan speeds during times of lower temperature control demand. Most new commercial buildings have VAV systems.

  6. Fixed cost - Wikipedia

    en.wikipedia.org/wiki/Fixed_cost

    Decomposing total costs as fixed costs plus variable costs. Quantity of output is measured on the horizontal axis. Along with variable costs, fixed costs make up one of the two components of total cost: total cost is equal to fixed costs plus variable costs.

  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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