Lloyd Hamilton, CGD President Verdae, LLC Building Envelope Specialist Certified Geo-Exchange Designer Accredited Installer

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1 Lloyd Hamilton, CGD President Verdae, LLC Building Envelope Specialist Certified Geo-Exchange Designer Accredited Installer

2 Buildings Use 40% Of All Energy And Waste 70% of It

3 LEED, Energy Star and NAHP s Green Building Standard have energy efficiency as a significant part of their criteria.

4 Studies show that over 40% of high performance buildings fail to perform as designed.

5 My first geothermal installation

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7 As a Result: I became a Building Envelope Specialist

8 I learned that: The building is a system. The HVAC system is one of many sub-systems. The building envelope is a complex sub-system. When the envelope works it does not leak air, water or energy. When the envelope works, synergistic magic happens.

9 I learned that: Sealing up 90% of the leakage paths reduces leakage by 50% because the pressures acting on the building are the same, air is compressible and loves to go fast! I call this AMPLIFICATION.

10 I learned that: Most buildings are not high performance buildings, even when they are designed to be because mistakes in design, construction and operation amplify each other. Lowest first cost is the enemy of lowest energy use. Designing for lowest energy use always provides the best return on investment. Best practice must be guiding principle of design and installation for durability, safety and comfort.

11 EEBA Builders Guides are a must for anyone who wants to know how buildings work Go to EEBA.org to order Energy & Environmental Building Alliance (EEBA) Your Source for Green Building Performance Education

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13 Net Zero A Net-Zero energy Energy home Home

14 First Proven Commercial Net-Zero Energy Building in New York State High energy performance design Geothermal HVAC, Solar Hot Water, and PV No fossil fuels Total Annual Energy Bill only $265.75

15 Start with ZNE as the goal Design for maximum operational efficiency Pay attention to the minute construction details Carefully commission all systems Develop a comprehensive operation plan Train staff in operation details Monitor energy use continuously

16 Hudson Valley Clean Energy Weekly Energy Generation and Use Tracking Hudson Valley Clean Energy, Rhinebeck NY Weekly Energy Generated and Used PV Energy Generated Total Energy Used /9/2007 8/9/2007 9/9/ /9/ /9/ /9/2007 1/9/2008 2/9/2008 3/9/2008 4/9/2008 5/9/2008 6/9/2008 7/9/2008 8/9/2008 kwh / week Zero Net Energy Achieved in First Year of Operation Generated 16,614 kwh Electricity Used 15,636 kwh No fossil fuels on site Negative Carbon Footprint Annual Energy Bill $ (utility basic service charge)

17 This home is not net-zero, but it could have been.

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19 Results of measurements and studies, December 2009: Solar system is performing well: energy generated since turn on in June 2007 equals 103% of expected average (Dec 1 st ). Plus or minus 10% is normal over any 12 month period according to NYSERDA. Central Hudson meter spins and records backwards as it should under net metering (Dec 4 th ). Geothermal basement and upstairs units are delivering heat according to manufacturer s specifications (tested Mar, Nov, Dec). Btu / hr output and electric power draw are within specification. Units are delivering heat at about 400% efficiency. Entry water temperatures from geothermal wells are good relative to the time of year (tested Mar, Nov, Dec) indicating good levels of available ground heat. Thermostat changed out Nov 25 th. Basement geothermal unit properly advancing from 1 st to 2 nd to 3 rd to 4 th stage when more heat is called for by thermostat. Stage 3 and 4 power levels are on spec. Electricity usage last 12 months = 27.7 Mwh Generated from solar = 7.1 Mwh = 26% Purchased from utility = 20.6 Mwh = 74% December 15 th to 29 th meter readings and analysis indicates: - Stage 3 and 4 (electric resistive) only ran about 1% of the time - Upstairs geothermal unit ran about 15 20% of the time - Basement unit ran on stage 1 or 2 about 75 85% of the time, delivering about 92% of the total heat Cost estimates for a total heating season (approximate given limited time of study): - Total heating load = 195 MBtu / year - Cost with Geothermal = $ 2,140 - Cost if Oil = $ 5,381 - Cost if Propane = $ 6,678 Crude estimate of total electricity usage: Space heating 53%, air conditioning 25%, all other uses 22%.

20 Geothermal is too expensive! I like the idea, I just cant afford it. If I do not get a 5 year payback it is just not worth doing. I want to do it, but you need to get the price down. I hear that geothermal does not really provide energy savings.

21 I respond: You will pay more, from day one, if you fail to install geothermal. Over the next ten years you will spend more on energy than you spend on geothermal now. The only way you can ever be energy independent is to build an ultra high efficiency building, install geothermal and solar.

22 People do not buy geothermal because of price! People buy geothermal for reasons other than price! Therefore: Sell Value not Price

23 A Net-Zero Energy Building Is No Mistake