Education and Resources

We offer training and technical resources in support of the commercial provisions of the WSEC. Check this webpage periodically for updates.

2018 WSEC Commercial Provisions Trainings

We have concluded our 2018 WSEC online training series. Stay tuned in early 2023 for announcements about training opportunities for the 2021 WSEC commercial provisions.



Due to the popularity of our online trainings, we offer a virtual training program for the convenience of the construction industry professionals we serve. 2022 Fall Focus webinar series highlights requirements in the commercial 2018 WSEC by discipline. Funding for this webinar series is provided by the Northwest Energy Efficiency Alliance (NEEA).

Thursday, September 29th, 2022 - Service Water Heating Systems and Technologies

This webinar covers key details about service water heating systems and technologies for plumbing engineers and contractors.

Key topics:

  • Water heating equipment efficiency details
  • Requirements for high-input water heating systems
  • Heat pump water heating systems
  • Circulating and temperature maintenance systems
  • Domestic hot water metering in Group R-2 with central SWH systems
  • SWH additional efficiency credits
  • When commissioning is required for SWH systems

Missed this webinar? Go to the On Demand Training page and scroll down to the bottom of the page to view this training video.


Wednesday, October 26th, 2022 - Solar Readiness and Energy Metering

This webinar will cover key details about the solar readiness and energy metering requirements in the code. These requirements in the WSEC are multi-discipline and so this training provides helpful information for electrical engineers & contractors, mechanical engineers & contractors, structural engineers and architects.  

Key topics:

  • Project types that the solar readiness requirements apply to
  • Architectural & structural requirements to support a future solar array
  • Electrical requirements to support a future photovoltaic system
  • Project types that the energy metering requirements apply to
  • Energy source metering & tenant sub-metering
  • Electric energy metering in Group R-2 buildings
  • Systems requiring end-use metering & exceptions
  • Data acquisition system & energy display

Missed this webinar? Go to the On Demand Training page and scroll down to the bottom of the page to view this training video.



This webinar series summarized 2018 Washington State Energy Code (WSEC) commercial requirements for existing building alterations. 

Missed these webinars? Go to the On Demand Training page and scroll down to the bottom of the page to view this training video.

Building Envelope Alterations

      Key topics:

  • Alterations to existing opaque thermal envelope
  • Roof replacement and alterations
  • Replacement of existing and new windows, skylights and doors
  • Requirements for a change in space use or space reconfiguration alteration
  • Additions to existing buildings

Lighting & Electrical System Alterations

      Key topics:

  • Calculating lighting power allowances for fixture replacement projects
  • Alterations that require lighting controls updates
  • Requirements for a change in space use or space reconfiguration alteration
  • Alterations that require compliance with controlled receptacle provisions

Mechanical & Service Water Heating System Alterations

      Key topics:

  • DOAS and economizer requirements when replacing or adding cooling systems.
  • Like-for-like HVAC and SWH equipment replacement.
  • Projects that include a change of space conditioning, occupancy or space use



Fact Sheets

What is Total System Peformance Ratio (TSPR)?

This fact sheet provides a general overview of the purpose of this  mechanical requirement and how this performance ratio is calculated. Also refer to training videos about the TSPR webtool on the On Demand Training webpage.


Commissioning Fact Sheet (PDF 2.6 MB)

Commissioning significantly increases the likelihood that technical details such as system configurations and flow rates, occupancy and temperature settings, and record drawings are correct and complete. Getting these technical details right can have a significant impact on the long-term performance of the building systems. Commissioning requirements in the WSEC elevate the priority for this important step in the construction process. This fact explains the basics of commissioning and when it is required per the WSEC.


Smart Service Water Heating Circulation Pumps Fact Sheet (PDF 2.5 MB)

Service water heating circulation systems are used in commercial buildings to maintain the design supply temperature in the primary piping loop. The WSEC requires this system to have a circulation pump with controls that manage the water temperature in the circulation system and turns off the pump when there is no demand for hot water. This strategy saves energy and reduces water use by minimizing the time required for hot water to reach a fixture.

Smart circulation pumps offer a better than code strategy that simplifies installation and operation with integrated sensors, programmable control logic and ECM motors. This fact sheet provides information about this strategy and links to helpful resources. 

Technical Resources

Coming soon!