NAC704.5667. Resource plan: Forecasts; inconsistent water sources; changes in methodology of forecasting.

     1. The resource plan of a utility must include forecasts for the term of the resource plan of the utility’s:

     (a) Peak demand in summer and winter for water flows;

     (b) Peak demand in summer and winter for wastewater flows;

     (c) Annual water consumption;

     (d) Annual wastewater flows; and

     (e) Annual losses of water from the system.

     2. The forecasts must:

     (a) Apply to the entire system of the utility;

     (b) Be based on the most probable set of future conditions that may affect water consumption and wastewater flows, including, without limitation, the customer base of the utility; and

     (c) If applicable, be separated according to rate schedule.

     3. If the utility’s forecast includes water from a water source that may not be available at a consistent level of use because of specific legal, environmental, water quality or climatic factors, the utility shall describe its plans to supplement or replace that water source, to the extent practicable, with alternative water sources or measures to manage the demand for water.

     4. In preparing the forecasts, the utility shall:

     (a) Describe the opportunities for the exchange or transfer of water with other utilities during the short-term and the long-term; and

     (b) Consider the effects that new technologies and new laws, regulations and other governmental programs may have on the forecasts.

     5. To verify and complete the forecast, the utility may evaluate the forecast with the results of alternative forecasting methods.

     6. Any change in the methodology of forecasting used by the utility from the methodology used in the utility’s previous resource plan must be identified in the current resource plan of the utility.

     (Added to NAC by Pub. Utilities Comm’n by R043-08, eff. 9-18-2008)