City Council Agenda and Packet 2022 09 27 SP

Home Browse Search

Page 113 DISCUSSION Policy Option 1 is the most flexible of the code options. Buildings must reach an energy performance standard specific to that property type, but a building owner has options for how they chose to reach their energy performance standard. Onsite renewable energy can also contribute to the building's predicted EUl,adding anotheroption in addition to efficiency to reach the target. This code results in more energy efficient, lower emitting buildings than the code package from the regional cohort and Appendix CC of the 20211ECC. All -electric buildings can reach much lower predicted EUIs because electricity has a lower energy densityx than natural gas. Therefore, lower energy performance goals will naturally lead builders to all -electric options, which will result in lower GHG ern issions overtime as the electric grid becomes cleaner. This policy option allows the City to lim it exem ptions from the building code because energy performance standards can be applied to all building types, including those with high energy needs, such as a hospital. Finally, this option does not mandate building owners to invest in on or offsite PV to comply with code but provides building owners the option to use onsite PV to their own financial benefit if they so choose. The NBI Standards modeled for this project are higher than both the City of Denver and the City of Boulder's standards for building types, m aking them more aggressive than local large cities surrounding Louisville. If the City chooses to pursue this policy option, additional analysis will be required to determine which targets are the most appropriate for the City of Louisville to adopt. Alignment with the City of Boulder's soon to be updated standards, could be advantageousto Louisville and would promote regional consistency. Policy option 1is the consultant and staff recomm enda tion for the City's energy code. See Section 4 for further discussion. 3.2.3 POLICY OPTION 2A AND 2113: APPENDIX CC AND/ ORALL- ELECTRIC REQUIREMENT POLICY DESCRIPTION Policy Option 2A mandates compliance with Appendix CC of the 2021 IECC, zero energy commercial building provisions. Policy Option 213builds upon 2A,adding a requirement that HVAC and plumbing systems must be all-electric.Appendix CC does not require commercial buildings to meet a higher level of efficiency above the base requirements in the IECC 2021. It does, however, require that commercial buildings m ust, in theory, offset 100%of the energy consumed onsite over a 15-year period using renewable energy. Note, it is likely that every commercial building will require both on and offsite renewable energy to reach the 100% offset requirement of Appendix CC. Procurement of offsite renewable energy to meet the 100%offset requirement is more complicated in practice. Appendix CC penalizes buildings Group L 0 T L itYof E N G I N E€ P ING EM1�t�46K�ngg & Sk1S'�Olf� bilfty Louisville 19