Resource Efficient Development Geos Neighborhood Developer Norbert Klebl

Resource Efficient Development Geos Neighborhood Developer: Norbert Klebl Feb 19, 2010

Market Why Are We Interested in Low Energy Homes? Buildings consume: • 39% of total energy • 71% of electricity • 53% of natural gas (primary) -2 -

Germany By 2007 more than 10, 000 Passive Houses built in Europe -3 -

Croke C anal Gilligan Family LP Property Geos Neighborhood -4 - Indiana Street Master Plan 69 th Ave.

Vision Geos Incorporates Multiple Home Types for a Diversity of Needs Home Types Home Sizes Row Homes 1, 100 – 1, 800 sf Single Family 1, 800 – 2, 000 sf Paired Homes 1, 600 – 1, 800 sf Live/Work Units 1, 600 – 2, 000 sf Condominiums 600 – 1, 600 sf Co-Housing 800 – 1, 600 sf -5 -

Low Impact Development Decentralized Detention -6 -

Public Landscapes: Street Tree Rain Gardens

Technology Passive solar: optimal orientation created with master plan • 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 -8 -

Technology Geos Utilizes Demonstrated and Cost-Effective Designs • 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 -9 -

Technology Energy Model: 1, 700 sf Paired Home 5 k. W photovoltaic R-50 roof R-30 walls R-5 tuned fiberglass windows R-22 ICF basement walls Less than 1 Air Change per 20 Hours ( < 0. 05 NACH) -10 -

Technology 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 -11 -

Technology A --

Technology Annual Heat Loss Through the Building Envelope --

Technology Goes Objective: Build Net Zero Energy Homes. . . Now! • Energy Consumption Reduction Passive Solar 30% High Performance Shell 40% Electricity Earth Loop Cooling & Building Shell - 15% Energy Star Appliances - 5% Efficient Lighting 10% Monitoring - 5% Photovoltaic Solar Offset 65% 8, 000 k. Wh = $1, 250 Ground Source Heat Pump 20% 1, 000 Therms = $1, 150 Natural Gas HRV - 10% Total Reduction 100% -14 -

Economics GEOS Design: Net-Zero Energy Homes That Are Cash Flow Neutral • Reduced utility payments offset increased mortgage costs Incremental monthly cash flows of Geos improvements = $285 incremental monthly mortgage $200 saved energy costs $85 tax savings $45, 000 incremental improvements -15 -

Economics -16 -