Please refer to the SB 2030 project website, at https://www.b3mn.org/2030energystandard, for more guidance on SB 2030 compliance, including submittal requirements.
During Schematic Design, determine which loads will be submetered and reported separately, and ensure that this list is regularly updated and communicated to the electrical system designers to enable compatibility between electrical distribution and metering layouts.
During the Schematic Design and Construction Document phases, the design team should determine the extent and scope of energy metering, which generally includes the building and any external associated loads (such as lighting). Main end-uses and their percentages of the total consumption should be identified through energy modeling. From this list of end-uses, the project team may also determine the compliance path (if they are pursuing Recommended Criteria D), and the uses to be metered. Appropriate meters for each item should be selected, and installation points identified. At this point, the metering strategy should be reviewed for completeness, usability, cost effectiveness, and contribution to the building’s operational goals. The submetering plan should be documented in a written report or on plan drawings during the Design phase and as part of the as-built set. Operational guidance should be provided for the building operator, and any others who may access or analyze the metered results data. Ensure that this is coordinated with the metering plan requirements of the SB 2030 program and included in the final design submittal.
Metering and reporting building and individual loads makes real-time energy consumption information available for facility managers and operators. This data can be used in efforts to reduce energy use, reduce energy costs, improve overall building operation, and improve equipment operation. The collection of data also allows for verifying utility bills, properly allocating energy costs and budgets, demand-response or load-shedding opportunities, measuring and verifying energy performance, benchmarking building and individual load energy use, identifying efficiency improvement opportunities, and developing annual energy reports. All of these reports and efforts are in support of the goal to reduce greenhouse gas emissions generated by Minnesota’s built environment.
The submetering plan should include the following: 5,
- Goals and objectives, such as verifying, benchmarking, optimizing performance, identifying failing equipment, monitoring occupant awareness and behavior change, or ongoing commissioning.
- Resources required, including appropriate staff time and training, equipment, and budget during design, construction, and operations phases.
- Security requirements for metered data.
- End-uses to be metered.
- Equipment that best supports metering objectives.
- SB 2030 metering requirements, including:
- Schematic metering diagram and narrative.
- Metered/monitored value list.
- Any calculations used to convert utility and/or submetered data into values that can be directly compared to the project’s SB 2030 Energy and Carbon Standard.
If pursuing Recommended Guideline D, use whole-building energy modeling to determine which end-uses will be metered. The selection of metered uses and the appropriate compliance path will vary depending on the building’s scale, program, equipment, and systems.
The intent of this recommended criteria is to ensure the building is operating as designed, and to identify potential additional energy savings. The selection of end-uses should support this goal and enable building operators to identify and correct anomalies. Some typical loads to meter include heating, cooling, hot water, lighting, ventilation and pumps, office equipment, in-building transportation, and controls and telecommunications. Special energy uses may also be useful to monitor, including items such as catering kitchens and restaurants, sports facilities, and covered and/or conditioned parking areas.
 Full SB 2030 metering requirements available under www.b3mn.org/2030EnergyStandard
 Derived from Metering Best Practices: A Guide to Achieving Utility Resource Efficiency, 3.0. PNNL, DOE. 2015.
 The Energy Program at Washington State University, a Short Guide to Submetering.