Overcoming Capacity Constraints in MultiFamily Building Retrofits

Overcoming Capacity Constraints in MultiFamily Building Retrofits

14 Nov 2024|Greenbuild 2024
0:00
0:00
|
0:00
https://cdn.streamly.video/f7379eb7_e350_4e6d_9400_f7075b3ce4e5_749949b79b.jpg
PREVIEW
Greenbuild '24 On Demand to watch the full video
David KanedaDavid KanedaPrincipal and Thought Leader at IDeAs Consulting, Inc.

David Kaneda is a seasoned professional with over 40 years of experience designing electrical systems. As a licensed electrical engineer and architect, he offers a unique perspective on the rapidly evolving strategies for designing cutting-edge, eco-friendly electrical systems for buildings. x000D x000D His current focus includes areas such as cost effectively electrifying existing buildings, designing buildings to support the grid, minimizing carbon emissions caused by buildings, developing innovative applications for PV/battery microgrids, design of resilient buildings, deploying all-electric kitchens, developing innovative EV charging and V2B concepts, integrating daylight and electric lighting systems, deploying smart electrical panels and using building scale hydrogen electrolysis and hydrogen fuel cells for standby power. x000D x000D David is a GSA - Peer Professional, a Fellow in the AIA, a LEED Fellow, a Senior Fellow at the New Buildings Institute, and serves on AIA California's Climate Action Committee. He also chaired GSA's - Green Building Advisory Committee and served on California's Green Building Code Advisory Committee. He has designed over 50 - net zero energy buildings, including the IDeAs Z Squared office; the first Net Zero Energy commercial office in the United States in 2005. He has led the electrical design for dozens of LEED Platinum, Well Building, CHPS and Living Building Challenge certified projects, as well as 11 - AIA COTE Top 10 Award winners. Notable projects including the Packard Foundation, 435 Indio Way, the Sonoma Academy - Janet Durgin Guild and Commons, Google Bay View, Microsoft's Silicon Valley Campus, the Venter Institute - La Jolla Campus and a resilient 1.3MW PV array and 1.25 MW/5.0 MWh battery microgrid for a confidential client. x000D x000D David believes that the building industry needs to rapidly transition to building high performance, all-electric, green buildings and electrifying existing buildings that burn fossil fuels. He is committed both to taking a leadership role in developing innovative, electrical system designs as well as teaching others how to replicate successful sustainable design strategies. To that end, he freely shares his expertise with others and has presented over 100 times at regional, national and international conferences, lectured at leading universities and published articles on sustainable electrical system design.

Sean ArmstrongSean ArmstrongPrincipal at Redwood Energy

Sean Armstrong is the Managing Principal of Redwood Energy and has worked for 28 years in building electrification, designed the retrofit and new construction of more than 25,000 all-electric residences for disadvantaged populations, co-authored 7 "pocket guides" to building electrification, provided legal and technical support to building gas bans nationwide, and has received Grand Prize awards from the United Nations and the California Building Industry Association. Sean was inducted into California's Clean Energy Hall of Fame in 2022, and in 2023-2024 is working with other nations on their Net Zero goals on behalf of the U.S. State Department.

Get access to this content as part of Greenbuild 2024
Description

One of the biggest challenges in California’s effort to eliminate carbon emissions by 2045, is fully electrifying the almost 90% of an estimated 13.5 million existing residences that currently use natural gas. Many states will face a similar challenge as they follow suit over the coming decades. Apartments are 29% of the housing in California, and 50% or more of housing built every year in California since 2009.

Older multifamily housing buildings are often undersized for current decarbonization goals. Units built in the 1970s-2000s often provided only 60A service at each unit, meaning the currently needed minimum 100A service is rarely in place.

We have a retrofit problem. Current electrical design consistently oversizes service for anticipated use. It’s problematic to further upsizel services to meet increased loads and code requirements as units are electrified. Converting natural gas furnaces, clothes dryers and boilers to heat pump technology, gas stovetops and ranges to induction, and even adding an EV charger, represent large but additional intermittent loads to a residence. The current approach of outsized electrical service upgrades would only further exacerbate the problem and result in unnecessarily high costs.

A better solution would be to combine necessary capacity for routine needs, with available additional capacity for occasional needs, at less than the cost of the conventional approach. This is possible because actual loads always fall below design capacity, demand can be better managed today than in the past, and battery storage is becoming an increasingly viable option to provide short-term additional capacity.

This session will present various strategies and technologies available to fully electrify housing without service and panel upgrades, which otherwise may come at the expense of both occupant and the owner, and limit the viability of many decarbonization projects.

0
Your cart