ZeroEnergy Design

RESIDENTIAL DEVELOPMENTS PORTFOLIO


Concord Riverwalk

Concord Riverwalk Concord Riverwalk
Location: Concord, MA
Building Type: Semi-Custom
Single Family
Homes
Building Size: 1,200-1,500 sf
# of Buildings: 10+
Target: Ultra-Low and Zero Net Energy
Project Summary | Ultra-Low Energy Neighborhood

Concord Riverwalk is a progressive cluster development of 10 new homes and 2 major renovations in a walkable neighborhood setting. The developer, NOW Communities, asked ZED to design the HVAC systems for the homes.

The mechanical design needed to match the high performance building envelope modeled by Marc Rosenbaum. Ultra-low energy consumption as a baseline was the target with net zero energy performance for some of the homes. The 'rightsized' ducted air source heat pumps and HRVs provide exceptional comfort and excellent indoor air quality with reduced energy consumption. Solar thermal panels produce ~75% of the required heat for hot water, with the balance provided by an electric hot water tank. The all-electric HVAC and hot water solution is easily upgradable to net zero energy, offers reduced system installation costs for the developer, and lower ongoing operating costs for the new homeowners. Architecture by Donald Powers Architects, Inc.
Concord Riverwalk project

Fresco at The Pinehills

Fresco at The Pinehills Fresco at The Pinehills
Location: Plymouth, MA
Building Type: Semi-Custom
Townhomes
Homes
Building Size: 1,400-2,300 sf
# of Buildings: 100+
Energy Star Certified
Project Summary | Low Energy Neighborhood

Fresco is a neighborhood of paired townhomes built around private courtyards, all within The Pinehills. The developer, The Green Company, asked ZED to optimize the energy performance for the homes and design the HVAC systems.

ZED’s energy consulting and mechanical design for each of the three floor plans helped the developers achieve their best Energy Star performance rating to date.

The 2011 Best of American Living Awards (BALA) provided national recognition for the homes with the Platinum Award – Home of the Year for Fresco at The Pinehills built by The Green Company.
Fresco Project

Oxbow Affordable Housing

Oxbow Affordable Housing  Oxbow Affordable Housing 
Location: Wayland, MA
Building Type: Multi Dwelling Units
Unit Size: 950 -1,300 sf

# of Units:

16

Energy Star Certified

HERS Rating:

40-52/varies by unit
Project Summary | Low Energy MultiFamily

89 Oxbow is an Energy Star rated 16-unit affordable housing development in three separate buildings. The developer asked ZED to analyze the building designs and performance, recommend cost-effective energy efficiency improvements, lead a green charrette, and provide financial arguments to support a green affordable housing grant application. Within this scope, ZED performed a cost-benefit analysis that factored energy performance benefits and cost data from a local contractor. With this analysis, ZED illustrated the total cost of ownership after improvements for each unit. With ZED's aid, the developer was awarded a $250k grant from the Department of Housing and Community Development (DHCD) which was applied both toward the building envelopes and solar electric systems.
Oxbow Affordable Housing 

Blu Homes Prefab

Blu Homes Prefab Blu Homes Prefab
Location: Nationwide
Building Type: Prefab Single Family Homes
Building Size: 400-1,800 sf
Energy Star Certified
Project Summary | Low Energy Prefab Homes

ZED provided energy modeling services for Blu Homes to improve the energy performance of its prefabricated one-, two-, and three-bedroom homes.   ZED modeled design in several climates across the nation assuming two packages of improvements over minimum code and projected carbon footprint reductions for each model in each climate. ZED also made HVAC recommendations that balanced performance and cost considerations.

Reductions in annual utility costs and carbon emissions were approximately 50% when compared to a code built home.

USGBC Natural Talent House

USGBC Natural Talent House USGBC Natural Talent House
Location: New Orleans, LA
Building Type: Single Family Homes
Unit Size: 800 sf

Targeting LEED Platinum

Project Summary | Low Energy Affordable Housing

ZeroEnergy Design and FreeGreen were jointly selected as National Finalists in the U.S. Green Building Council's 2010 Natural Talent Design Competition. As a National Finalist, their green, LEED Platinum home, designed for the post-Hurricane Katrina rebuilding effort, will be built in the Broadmoor neighborhood of New Orleans.

The USGBC, in collaboration with the Salvation Army’s EnviRenew, challenged contestants to design an 800-square-foot LEED Platinum home that embraced the New Orleans Broadmoor neighborhood, functioned well for elderly occupants, and minimized construction and operating costs. ZeroEnergy Design and FreeGreen collaborated on the architecture and specifications for “Little Easy”, which was selected by a panel of prestigious judges as one of four national finalists.

Each national finalist’s home design is being built in New Orleans and monitored during a measurement and verification phase during which each are being evaluated on energy efficiency, water reuse and indoor air quality among other categories. The design team whose home performs best during measurement and verification will be awarded the final grand prize at Greenbuild 2011 International Conference & Expo.

Land Tejas Solar Community

Land Tejas Solar Community Land Tejas Solar Community
Location: Houston, TX
Building Type: Production Single Family
Building Size: 2,400-3,100 sf
# of Buildings: 100+
Energy Star Certified
Project Summary | Low Energy Neighborhood

Land Tejas is a large developer of communities surrounding Houston, TX.  ZED worked together with Ryland Homes and GE’s EcoHomes program to help them understand the performance of their homes and recommend measures to help the homes perform 50% better than code.  ZED also developed concepts for their use in marketing this development as the first solar community in the Houston area.

Design Home 2008

Design Home 2008 Design Home 2008
Location: Plymouth, MA
Building Type: Semi-Custom Single Family Home
Building Size: 3,100-4,400 sf
# of Buildings: 25
Energy Star Certified
Project Summary | High Performance Homes

Five Lanterns is a luxury housing neighborhood at The Pinehills in Plymouth, MA. The developer and builder, The Green Company, asked ZED to provide energy efficiency recommendations and design the HVAC systems for the homes. The mechanical design/layout needed to be adaptable to different customer-selected building options. Efficient and cost effective selections were made to both reduce utility bills and gain efficiencies of scale over numerous buildings. The 'rightsized' systems also reduced the first installation cost of the system as well as the ongoing operating costs. Cooperative efforts led to one of the best Energy Star ratings yet achieved by the builder. ZED also led a seminar for the Green Company's sales team that served as a primer to green building, energy efficiency, and where the Five Lanterns homes fell in the spectrum. Selected by Boston magazine as the Design Home 2008, the homes also received 5 national design awards including Best in North Atlantic Region award from the 2008 Best in American Living Awards.
Design Home 2008

100k House

100k House 100k House
Location: Philadelphia, PA
Building Type: Custom Single Family Home
Building Size: 1,100 sf
Energy Star Certified
HERS Rating: 50
USGBC Rating: LEED Platinum
Project Summary | Low Energy Home

The 100k House is an affordable housing project in Philadelphia, PA. The developer's concept was to build urban-infill, two-bedroom homes targeting LEED Platinum certification with only a $100,000 construction budget. With cost effectiveness being paramount for the project, ZED developed energy efficiency recommendations that reduced the home's energy use by 44%. An optional package with a slightly higher construction cost produced higher performance and included a solar thermal system.
100k House