(A) During the facility's preliminary schematic design stage, a state agency shall require the designer to:
(1) Develop at least three practical alternative design concepts, considering passive and/or active building components, for the purpose of minimizing future energy consumption.
(2) Estimate the annual energy consumption and associated energy costs of each alternative, analyze their impact on facility life-cycle costs and incorporate into the final facility design alternatives which are cost effective.
(3) Re-evaluate life-cycle cost as additional alternatives to be considered during the continuing design development to assure their cost effective implementation.
(4) Supply all pertinent data summarizing the life-cycle cost analysis to the office of energy services for review and evaluation.
(B) After the completion of the facility's design development stage, an energy consumption analysis shall be performed for the purpose of estimating the expected energy consumption and associated cost of the proposed facility.
A state agency shall supply all pertinent energy consumption data to the office of energy services for review and evaluation. Thisdata shall include but not be limited to:
(1) Expected annual energy usage and initial cost by energy type.
(2) Distribution of expected energy consumption by major building systems.
(3) Energy performance index of the proposed design.
(4) Capitalization of the initial construction costs.
(C) The energy consumption calculations shall be performed in accordance with established engineering practices and currently accepted methodology including computerized simulation techniques approved by the office of energy services.
(D) The following economic methodological assumptions shall be utilized in computing life-cycle costs:
(1) The study period shall consider the economic life of the facility, which may include the number of years during which the proposed facility is not expected to undergo major renovation or major changes in utilization.
(2) Future costs shall not include adjustments for general inflation but shall include any known utility rate adjustments approved by the public utilities commission.
(3) The time value or alternative investment value of money shall be considered by discounting future cost to present value. The discount rate shall be in accordance with generally accepted practices.