The Electricity Supply Industry (Rateable Values) (England) Order 2000

Interpretation of Part II

4.  In this Part—

• “declared net capacity”, in relation to generating plant, means the highest generation of electricity at the generator terminals which can be maintained indefinitely without causing damage to the plant, less so much of that generation as is consumed by the plant, expressed in megawatts to the nearest one hundredth part of a megawatt and calculated on the following assumption:

  (a)

  in relation to generating plant the sole or primary source of energy for which is wind power, that the wind speed is sufficient to power the generating plant at its highest generation of electricity;

  (b)

  in relation to generating plant the sole or primary source of energy for which is water power, that the water flow is sufficient to power the generating plant at its highest generation of electricity; and

  (c)

  in any other case, that—

  (i)

  the temperature of the water (if any) entering the cooling system is—

  (aa)

  19 degrees Celsius, where the water is circulated on the hereditament for re-use in the cooling system, or

  (bb)

  10 degrees Celsius in any other case, and

  (ii)

  in so far as they affect the generating plant—

  (aa)

  the air temperature is 10 degrees Celsius,

  (bb)

  the air pressure is 1013 millibars, and

  (cc)

  water is available at all times in adequate quantities; and

• “generating plant”, in relation to a hereditament, means plant in or on the hereditament which is used or available for use for the purposes of generating electricity.