Roth & White Residence

A resilient Net Zero home built in upstate New York, complete with technical detail. This home is one of nine similar homes constructed between 2013–2014 by Anthony Aebi of Greenhill Contracting, Inc. within The Preserve, the second of his Zero-Net Energy developments in New Paltz, New York. All nine homes were constructed with ICF walls, geothermal heating and cooling, twenty-eight solar panels, and an array of other energy and water-efficient features. Additionally, all of the homes were certified for ENERGY STAR Homes, EPA Indoor airPLUS, DOE Zero Energy Ready, and USGBC LEED for Homes at the Silver Level. This development was created with the specific intention to appeal to consumers who could afford a reasonably-priced home in the Mid-Hudson Valley, and who were interested in maintaining a sustainable lifestyle by reducing energy consumption through proven technologies. One year from the date we moved into our home, we not only eliminated our energy consumption, but achieved a net “production” of 764 kWh- nearly 9% of the homes annual energy usage. Our home was constructed simultaneously with the others and was pre-drafted in terms of layout, design, and interior specifications, which allowed for greater affordability due to many interior items (such as kitchen cabinets, countertops, flooring, molding, sinks, toilets, fixtures, etc.) purchased in quantity. The initial cost of the home was comparable to (and in some cases less than) similar properties in the region notwithstanding energy savings. The fact that all nine homes were constructed simultaneously within one year speaks directly to the ability to replicate this type of construction in a functional, efficient, and cost-effective manner.

Building Zero-Net Energy homes is Anthony Aebi’s livelihood and vision for the future of residential development. Our interest in this technology and desire to purchase one of his homes was congruent with his strong personal motivation to enhance the quality of the planet by building energy-efficient housing. We desired to live as sustainably as possible without contributing to an already-polluted planet, and assigned a higher value to reducing our carbon footprint than saving money. The achievable outcome of zero energy costs for the life of our home was an added bonus.

Aside from being a dwelling that is an “environmental ideal,” our home’s design, including open floor plan and large, triple-pane glass windows, creates a light-filled space that is both figuratively and literally warm and inviting. The geothermal and solar systems operate seamlessly and are quiet and user-friendly. Our “green” neighborhood fosters greater awareness of our limited planetary resources, and thus our 25x40-foot vegetable garden (enclosed by a solar-powered electric fence) and composting ritual suits our desire to live as conscientiously and organically as possible. Further, the structural integrity of our home can withstand severe weather and geological events including cold winters in the Northeast, and is resilient enough to provide shelter for hundreds of years to come.

Quick Facts


15 Evergreen Lane
New Paltz, NY12561
United States
Building Type Single-family residence
Project Type
Basis of Performance Claim
Conditioned Floor Area 3 017

Energy Summary

Energy Data Type
Renewable Energy System Type(s)
Annual renewable energy generated 9 831

Envelope and Mechanicals

Subslab assembly

3-inch-thick bed of closed-cell spray foam

Foundation wall assembly

Insulated ICFs

Above grade wall assembly

ICF walls 11.25-inch-thick ICF walls, consisting of a 6-inch concrete layer sandwiched between
two layers of EPS rigid foam

Door Assembly
Air Changes per hour, ACH50 0.28

Project Team:

Other Team Members:




Completion Date:


Type of Construction
Number of buildings
Floor area of each building
Conditioned Building Volume
Conditioned Floor Area 3 017

Location and Climate Details

Single-family residence

15 Evergreen Lane
New Paltz, NY12561
United States
Location Type Suburaban
Climate Region Zone 5
Köppen Climate Type Dfa
Lat. / Long. POINT (-74.0837163 41.7018992)
Elevation 380
Solar Insolation 4.33 kWh/m2/day
Annual CDD and Base Temp 799 | 75
Annual HDD and Base Temp 6447 | 68


Site Conditions:

Site Description:

Monthly Energy Data and Utilities

Energy Data Type:

Electric Utility: Central Hudson Gas & Electric Co.

Gas Utility:

Renewables and Energy Balance

Renewable Energy Sources:

Renewable Energy System Description & Details:

Annual renewable energy generated 9 831
Annual Renewable Energy Generated Data Type
Power Rating 7Watts
Renewable Energy System Type(s)
Source of Annual Production Data

Walls and Roof

Subslab assembly

3-inch-thick bed of closed-cell spray foam

Subslab R-value
Slab edge assembly

Insulated ICFs

Slab edge R-value 22.00
Foundation wall assembly

Insulated ICFs

Foundation wall R-value 22.00
Above grade wall assembly

ICF walls 11.25-inch-thick ICF walls, consisting of a 6-inch concrete layer sandwiched between
two layers of EPS rigid foam

Above grade wall R-value 22.00
Cathedral ceiling assembly
Cathedral ceiling R-value

Windows and Doors

Window Assembly:

Door Assembly:

Average window U-factor 0.20
Door U-Factor
Door Area

Mechanical Systems

Space cooling - Manufacturer & Model
Space heating - Manufacturer & Model
Domestic hot water - Manufacturer & Model
Domestic hot water - capacity
Ventilation - Manufacturer & Model
Lighting Manufacturer and Model
Lighting Efficiency
Mechanical Equipment Installation Details and Comments


Air Changes per hour, ACH50 0.28
Air Changes per hour, CFM50

General Process

Design for Adaptability:

Software Tools

Software Tools:

General modeling information:

Lessons Learned

Outcome of Project Goals:


Rebates and Financial Incentives

Federal incentives
Local incentives
State incentives
Utility incentives
Other incentives