Resource Efficient Development

Geos NeighborhoodDeveloper: Norbert Klebl

Feb 19, 2010

Buildings consume:

• 39% of total energy

• 71% of electricity

• 53% of natural gas

(primary)

Why Are We Interested in Low Energy Homes?

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Market

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Germany

By 2007 more than 10,000 Passive Houses built in Europe

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Geos Neighborhood

Gilligan Family LP Property

Cro

ke C

anal

69th Ave.

Indi

ana

Str

eet

Master Plan

Geos Incorporates Multiple Home Types for a Diversity of Needs

Home Types Home Sizes

Row Homes 1,100 – 1,800sf

Single Family 1,800 – 2,000sf

Paired Homes 1,600 – 1,800sf

Live/Work Units 1,600 – 2,000sf

Condominiums 600 – 1,600sf

Co-Housing 800 – 1,600sf

Vision

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Decentralized Detention

Low Impact Development

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Public Landscapes: Street Tree Rain Gardens

• Comparative development patterns in Highland neighborhood (urban Denver)

• Optimizing density with solar access designed (required) for entire neighborhood and individual lots

• Utilizing unique features of Colorado’s climate

• Taking advantage of 300 sunny days per year: open homes for winter sun, shade against summer heat

Passive solar: optimal orientation created with master plan

Technology

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• High performance shell – high insulation, low infiltration

• Heat Recovery Ventilator – fresh air intake and energy conservation

• Passive solar orientation – sun is primary source of conditioning heat

• Solar thermal collectors – for domestic hot water and back-up conditioning heat

• Solar photovoltaic – achieves net zero energy goal

Geos Utilizes Demonstrated and Cost-Effective Designs

Technology

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5 kW photovoltaic R-50 roof

R-22 ICF basement walls

R-5 tuned fiberglass windows

R-30 walls

Less than 1 Air Change per 20 Hours( < 0.05 NACH)

Energy Model: 1,700sf Paired Home

Technology

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Geo-Assisted Heat Recovery Ventilation (HRV) System

• Provides constant filtered fresh air

• Temperature equalization in all rooms

• Heating/cooling distribution

• Low maintenance

• Very low noise

Technology

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A

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Technology

Annual Heat Loss Through the Building

Envelope

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Technology

Passive Solar30%

High Performance Shell40%

HRV - 10%

Ground Source Heat Pump

20%

Total Reduction 100%

Natural GasEarth Loop Cooling & Building Shell - 15%

Energy Star Appliances - 5%

Monitoring - 5%

Photovoltaic Solar Offset65%

Total Reduction 100%

Electricity

Goes Objective: Build Net Zero Energy Homes... Now!• Energy Consumption Reduction

Efficient Lighting10%

Technology

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$45,000 incremental

improvements

$285 incremental

monthly mortgage

$200 saved energy costs

$85 tax savings

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Incremental monthly cash flows of Geos improvements

GEOS Design: Net-Zero Energy Homes That Are Cash Flow Neutral• Reduced utility payments offset increased mortgage costs

Economics

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Economics

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