Hopeworks Station II - Net Zero Energy

1:30 pm, Room 110 - Application

Shawn Oram & Greg Wentzell, Ecotope Inc.

Hopeworks Station II is a 54,000 square foot, Net Positive Energy, urban/mixed-use development in Everett, WA. The building is designed to be a hub for fresh, food-based social enterprises while providing 65 units of transitional housing and training for homeless individuals.

Ecotope’s mechanical system design includes triple pane windows, energy recovery ventilators (ERVs) in all amenity spaces and residential units. The building is set up as a unique donut shape to facilitate cross breezes. Domestic hot water is supplied a decentralized Sanden heat pump unit that each serve a vertical stack of six apartments. The incredibly low energy usage of the building is offset by a 200-kW photovoltaic array that will fully offset the energy use of the residential units.

The project is a part of the International Living Future Institute’s Living Building Challenge (LBC) Affordable Housing Pilot Program, is on track for Net Zero Energy certification and Evergreen Sustainable Development Standard (ESDS). Hopeworks Station II is targeting an energy usage of 17 kBtu/sf/yr before solar PV is counted.

Learning Objectives:

  • How to optimize efficiency to match a building’s solar budget – we decided to target 105% of the residential portion of the building’s energy demand.

  • Introduction to three key emerging energy efficient technologies for multifamily buildings – ERVs, Distributed Sandens, heat pump dryers

  • Understand the utility and regulatory landscape around design and installation of large solar PV arrays

  • Understand more about specific requirements with the Living Building Challenge Affordable Housing Pilot

Shawn Oram, PE – Director of Engineering and Design

Shawn Oram leads the design team. His work at Ecotope since 2002 focuses on energy efficiency and its relationship to building systems design. Mr. Oram has a deep knowledge of buildings, systems and energy use gained through field studies, research, energy audits, code compliance analysis, extensive energy modeling, commissioning, and design of HVAC and plumbing systems. He assisted in creation of the guidelines for the Design for Off TM approach to creating low energy buildings.

Greg Wentzel, PE - Mechanical Engineer

Greg joined the Ecotope team in early 2017 and has previous experience in hospital, labs, high rise buildings. Greg has been working primarily on high performance HVAC and domestic hot water systems design for high and mid-rise multifamily buildings. Greg has recently worked on energy efficiency upgrades of existing buildings for local affordable housing programs, Capitol Hill Housing & Bellwether Housing. These retrofits include central heat pump water heating systems, energy-recovery ventilation systems, and heat pumps for space conditioning. Greg has also worked on several engineering studies on load shifting high efficiency systems & renewables for net zero energy projects in Washington and California.