Commercial Solar Thermal Systems. Alan Frasz Vice President

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1 Commercial Solar Thermal Systems Alan Frasz Vice President

2 Dovetail Solar and Wind Founded in one of Ohio s oldest & largest renewable energy design and installation firms Implement Solar Electric, Wind, & Solar Thermal systems throughout Ohio and surrounding states Offices in Athens, Cleveland, Columbus, Cincinnati, Toledo and Southern Michigan Over 185 systems installed (more than 2 MegaWatts)

3 Sample Installations Raymond Ku home Sean Jones home Twenty First Century Energy Corp. Apple Hill Orchards Kilpatrick Farm Melink Corp. Cincinnati Zoo Schott Education Ctr.

4 Our Key Tenants Provide clients outstanding value Reliable, high quality systems Energy cost savings Healthier ecosystem Improved energy security & lower risk exposure Utilize USA made components Create local direct and indirect jobs Utilize NABCEP certified installers Renewable Energy makes good business sense for Ohio

5 Solar Electric (PV) Solar Thermal

6 Thermal Spectrum Range Solar Thermal

7 Solar Thermal Systems Can provide high percentage of a building s hot water needs 60% to 70% of yearly heat for DHW Excellent way to heat pools Hot water for laundries, car washes, & restaurants Can sometimes augment space heating Affordable and cost effective solar energy investment in Ohio & Indiana

8 Application Guidelines Best for applications with steady, high usage of hot water and water heating Examples: multi-tenant apartments or senior living facilities, hotels, fire stations, laundromats, car washes, large indoor swimming pools, food and beverage processors, some industrial processes Poor sites: elementary schools, empty nester homes, vacation homes, banquet facilities

9 Application Guidelines Adequate, unshaded roof space in close proximity to mechanical room Want as much sun exposure as possible Long piping runs are expensive and inefficient Timing make improve financial feasibility Good to do in conjunction with boiler and/or energy efficiency upgrades Good to do in conjunction with roof replacement Lowest cost when designed in with new construction

10 Application Guidelines Need to have an appetite for long-term investments with a large payback Much easier to cost justify for a For-Profit business than a non-profit institution due to significant Federal incentives Need to factor in the inevitable rise in fossil fuel costs over the next 25 years Cheap fossil fuels are a fading memory Value you place on your environmental footprint

11 Typical Solar Thermal Contribution

12 Sample Reduction in Fossil Fuel Usage

13 Flat Plate Collectors Efficiencies ~50% Long history Very durable Low tech High quality models Typically use Heliodyne for commercial systems

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16 Closed Loop Residential Solar Hot Water

17 Closed Loop Solar Commercial System

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19 Closed Loop Solar Pool Heating

20 Sample Residential Solar Thermal costs

21 Commercial Solar Thermal Systems Flat roof is most common location Typically Installed at 30 to 50 module tilt angle Wide range of system sizes Typical cost is $85 to $ per KBTU Larger systems have a lower cost per KBTU

22 Sample Configurations Approx System Cost $44,000 $70,000 $110,000 $162,000 $295,000

23 Federal Tax Incentives Available Federal Investment Tax Credit (ITC) 30% Tax Credit on Reimbursed System Cost Must be installed by 2016 No Cap on size of system and credit Solar Electric, Solar Thermal, and Wind systems Can receive a 30% Treasury Grant (cash) in lieu of 30% ITC a 1603 Grant Only for 2011 Projects

24 Federal Tax Incentives Available Federal Modified Accelerated Cost Recovery System (MACRS) for Solar & Wind 5 year Depreciation Schedule for Commercial 100% Bonus 1 st year Depreciation available for systems commissioned in 2011 Depending on tax bracket, can cover up to 42% of system cost

25 Madonna Homes Toledo, OH

26 Madonna Homes Five Story Apartment Building Built in 1970, owned by Catholic Diocese of Toledo Senior and Low-Income Apartment Building 171 one and two bedroom units, each with full kitchen and bath Shared washers & dryers on each floor Central hot water boiler and with circulation system Solar Thermal System was installed 2008 in conjunction with an extensive building renovation

27 1,620,000 BTU/hour natural gas-fired boiler 864 gallon hot water tank

28 New white reflective membrane roof with underlying insulation

29 Solar Thermal Hot Water System Qty 48 Heliodyne GOBI 410 solar collectors Double-walled, high capacity heat exchanger Heliodyne Delta-T Pro Controller 2,150 gallon external solar storage tank 32 gallon Amtrol SX-60V expansion tank two circulation pumps, temperature sensors, and numerous valves & gages

30 Cut through roof membrane and insulation, Then install and flash curbs to hold racking

31 Lift 48 Heliodyne GOBI 4ft x 10ft solar collectors up 5 stories to roof staging area

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35 Added 2,150 gallon external solar storage tank

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38 Produces million BTUs per year (59% of demand) 80,000,000 70,000,000 60,000,000 50,000,000 40,000,000 30,000,000 20,000,000 10,000,000 0 BTUs Sep-09 Oct-09 Nov-09 Dec-09 Jan-10 Feb-10 Mar-10 Apr-10 May-10 Jun-10 Jul-10 Aug-10 Sep-10 Oct-10 Nov-10 Dec-10 Jan-11 Feb-11

39 January 20 th System producing 119 water!

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41 Centertown, Rafael, CA 60 Unit apartment complex 2 5 Collector Systems 1 4 Collector System

42 Centertown 60 unit apartment

43 Discussion and Q&A Dovetail Solar and Wind (216) (513) A copy of this presentation is on our website