Wash. Admin. Code § 194-50-080
Exception to 8.1: For Level 1 audit, no Form D is required unless complying through conditional compliance or the decarbonization plan exception to Section W3.1.1(1).
Exception to 8.2.1:Buildings may use energy audits completed within five years prior to the building's compliance date, provided that the scope of the energy audit meets the requirements of this section and that there have been minimal changes to the systems within the audit scope. The energy audit must be evaluated consistent with the investment criteria in Normative Annex X.
* Envelope;
* Lighting;
* Cooling;
* Heating;
* Ventilation and exhaust systems;
* Air distribution systems;
* Heating, chilled, condenser, and domestic water systems;
* Refrigeration except for food processing refrigeration;
* Power generation equipment;
* Uninterruptible power supplies and power distribution units;
* People-moving systems;
* The scope of the energy audit may include campus district heating and/or cooling systems when the campus district heating and/or cooling system serves the building being audited.
An energy audit shall be conducted, and an associated energy audit report shall be provided, for all buildings that do not meet their energy target. The energy audit shall be completed by a qualified energy auditor practicing within their field of competency. The energy audit shall be at an audit level specified by the qualified energy auditor to be sufficient to identify and evaluate the EEMs that, if implemented, would result in the building meeting its energy target. The qualified energy auditor may refer to the list of potential EEMs in Informative Annex E.
After the completion of the audit and the selection of EEMs to be implemented, the applicant must calculate an adjusted energy use intensity (EUI) for the building based on the estimated energy savings from the selected EEMs and the historical energy use of the building. This adjusted EUI is then compared to the energy target for the building. If the adjusted EUI is less than the energy target, the applicant shall proceed with implementation as specified in Section 9. If the adjusted EUI is greater than the energy target, a more rigorous energy audit investigation is required to identify additional EEMs. This process is repeated until the building's adjusted EUI is less than its energy target.
Calculation of the adjusted EUI is shown in the following equation:
Following the completion of an energy audit that has identified EEMs sufficient to meet the building's energy target, the applicant shall implement those EEMs per the requirements of Section 9.
Exception to 8.3.2:Buildings may use energy audits completed within five years prior to the building's compliance date, provided that the scope of the energy audit meets the requirements of this section and there have been minimal changes to the systems within the audit scope. In this case, the same comparison of adjusted EUI to energy target shall be made by the applicant. If the EEMs identified in the audit are still applicable, have not been implemented, and if implemented would result in the building meeting its energy target, these measures shall be implemented by the facility, and the project shall follow the procedures in Section 9. If the identified EEMs do not result in an adjusted EUI less than the energy target, a new energy audit shall be conducted as described in Section 8.3.2.
Energy audit results shall be presented in a summary table that includes, at a minimum, an estimate of each of the following:
* A list of recommended EEMs that, if implemented, will either meet the energy target for the building if it has a target or, if it does not have an energy target, will meet the economic criteria set by the standard in Section 9.
* The estimated energy savings and peak demand savings associated with each recommended EEM, expressed in the cost units used on the building owner's energy bills, and the units used for comparison with the energy target.
* The estimated (modeled) energy cost savings associated with each recommended EEM.
* The estimated cost of implementation for each recommended EEM. The costs of implementation shall include the required monitoring of energy savings per the requirements of Section 9.
The economic evaluation of measures are required by Normative Annex X.
Informative Note: For example, if the audit identifies lighting retrofit opportunities, the qualified energy auditor shall compare the identified energy savings for those opportunities with the base-case energy use of the facility and demonstrate that they make up a reasonable fraction of the historical electricity consumption at the site.
This comparison shall be conducted separately for each fuel type, such as electricity, natural gas, or fuel oil, for which EEMs are identified. On-site energy sources such as solar, photovoltaic, geo-thermal, and wind shall be included.
Correction for historical weather for the base year versus average weather used in baseline estimates may be used.
The same energy use estimates that comprise the end-use analysis shall also be used as the basis for energy savings calculations. The qualified energy auditor shall verify that each EEM savings estimate is reasonable in comparison to the historical energy consumption of that end use based on energy consumption survey data or experience with similar sites.
The qualified energy auditor shall verify that the combined savings from multiple EEMs shall take into account interactive effects among measures.
Miscellaneous plug loads may be estimated on average equipment power density and building area. (See Form D in Normative Annex Z.)
Wash. Admin. Code § 194-50-080