Solar- Ready Roof. Op#mize the Design. The SOLAR-READY ROOF Optimize the Design Copyright All rights reserved. The

Transcription

1 The Solar- Ready Roof Op#mize the Design Course Sponsor: Metal Roof Innova-ons Rob Haddock S- 5! /Metal Roof Innova>ons 8655 Table BuCe Road Colorado Springs, CO com Course Number XXXXX Copyright All rights reserved.

2 Course Description Learn Basics of the Solar System Learn Terminology Review Different Components Discuss the Solar-Ready Review Process Review Various Roof Applications Review How to Optimize the Solar Design

3 Course Learning Objectives Describe basics of solar PV systems, components and rooftop applications Enumerate the steps of the review process for a Solar-Ready Roof Explain why a metal roof is a perfect solar platform Understand why non-penetrating mounting systems are beneficial

4 Solar System Basics Solar photovoltaic panels free electrons from semiconductor, creating electricity Photons Electrons

5 Solar System Basics The inverter turns DC power into Alternating Current (AC) power for use in your building (Elect Load) DC AC Inverter

6 Solar System Basics AC power you don t use is sent back into the grid and used by the utility company This is common practice called grid-tied Meter Inverter

7 Solar System Basics Insolation ç è Irradiance The amount of sunlight (Sun-Hours) reaching an area Germany Fair irradiance USA Good Great irradiance throughout the country

8 Solar System Basics Photovoltaic (PV) A device that converts sunlight directly into electrical energy Cell The smallest, basic component. Module Housing structure for interconnected Photovoltaic cells String A number of modules connected together electrically to provide a single electrical output. Array A number of strings connected together electrically to provide a single electrical output.

9 Solar System Basics Solar System Array Solar Panels (modules)

10 Solar System Basics Watt (W) Unit of power Kilo Watt (kw) Equal to one thousand watts Mega Watt (MW) Equal to one million watts Kilowatt Hour (kwh) Common unit of energy consumption/generation A kwh of power ranges in cost from $.07 to $.35

11 Components Crystalline Flexible Thin Film

12 Components Crystalline Pro Con Market dominator High efficiency Low cost Weight considera>ons Aesthe>cs (?)

13 Components Flexible Thin Film Pro Laminate is light weight Non- penetra>ng installa>on Works well with diffused light Con New, clean surface needed High cost/wac Lower overall efficiency

14 Components Direct Current (DC) Alterna>ng Current (AC) An inverter is essential to PV design because it: Brains of the system Interconnects with the electrical supply (grid and array) Maintains constant output of the current, avoiding voltage fluctuations

15 Components Micro Inverter

16 Components Combiner Box A combiner box reduces wiring and installation costs Combiner Box

17 Components BOS - Balance of System Components

18 Rooftop Applications Flat Roof Fully Ballasted System

19 Rooftop Applications Flat Roof Aero System (reduced ballast)

20 Rooftop Applications Flat Roof Mechanically Attached System 44 kw system 4,000 s.f. roof 332 penetra>ons

21 Rooftop Applications Steep Slope - Shingle Roof

22 Rooftop Applications Steep Slope - Tile Roof

23 Rooftop Applications Metal Roof - Adhered Thin Film Laminate

24 Rooftop Applications Metal Roof Framed Module

25 REVIEW Solar System Basics Components Rooftop Solar Applications Ballasted Systems Aerodynamic Systems Mechanically Attached Systems Shingle Systems Roof Tile Systems Laminates or Crystalline on Metal Roofs Solar Ready Review

26 Solar Ready During the design stage, timing is perfect to review solar options Pre-plan and add the basics for a future system Incorporate a complete system into your design for today Information to make an informed solar system decision Helps you to optimize power production Solar-Ready - Optimizes the Design

27 Orientation Roof Orientation SOUTH

28 Roof Pitch Low Slope Applica>ons Planar to roof surface Steep Slope Applica>ons Planar to roof surface

29 Roof Pitch CHART Pitch Angle PV Array Tilt Angle by Roof Pitch Roof Pitch Tilt Angle ( ) 4/ / / / / / / / /

30 Roof Pitch The difference in power produc>on from 4:12 to flat in New Jersey would be about 10%. In Aus>n, more like 7%

31 Shading

32 Solar Zone/ System Size Code Set- backs Roof- Top Equipment Roof Access Array Size Wire Management

33 Solar System Design- ROI Variables System Size- Solar Zone size System Cost Loca>on of Project (sun- hours) Azimuth (roof orienta>on) Angle to Sun Inverter De- rate Wiring De- rate Temperature De- rate Energy Cost & Escala>on (year- by- year) Module Efficiency Loss (year- by- year) Inverter Replacement

34 Show me the Money: Return on Investment ROI on $236,250 Investment review $337,500 System Cost

35 Show me the Money: Return on Investment Year 25 Positive Cash of $1,230,377 Year 30 Positive Cash of $1,585,377 Year 35 Positive Cash of $1,940,377 $236,250 ORIGINAL INVESTMENT = 13.8% Annualized ROI

36 Solar Ready Recap Orientation Roof Pitch Shading Solar Zone Structural Cost Considerations (Return on Investment) = Solar Ready???

37 Show me the Money: Return on Investment THE ROOF IS THE SOLAR MOUNTING PLATFORM! What about selection of roof type? What is its service life? What are the replacement costs? Are they included in the financial proforma?

38 Roof Type Compatible service life Modules have 25-Year Power Warranty Modules have a 35-Year Service Life Roof service life should EXCEED that of the solar system to avoid the cost of roof replacement!!!

39 Conventional Roof Types: Mean Service Life Service life of PV = Service life of BUR = Service life of APP = Service life of SBS = Service life of TPO = yrs 19.8 yrs 16.1 yrs 17.7 yrs 13.6 yrs (SERVICE LIFE OF OTHER COMMERCIAL ROOF TYPES = YEARS) Source: Carl Cash Survey, Simpson, Gumpertz & Heger, 2005

40 Service Life - Reroof

41 Service Life - Reroof

42 Service Life - Reroof

43 Service Life - Reroof

44 Reroofing & Solar System Removal Remove all the modules Remove all the mounting system Reroof Re-install mounting system Re-install modules ANY DAMAGED COMPONENTS? LOSS OF POWER PRODUCTION? TOTAL FINANCIAL CONSEQUENCE?

45 The relative initial costs: roof & solar Approximate costs per square foot Aggregated cost = $33/sf $33.00 Solar- Roof $30.00 Solar 12 W/p x $2.50/W = $30/p $3.00 Roof

46 The costs: roof & solar AFTER roof replacement Approximate costs per square foot after reroofing include the cost of the new roof, and the cost of removing and reassembling the solar array! Aggregated cost = $48/sf $2.00 reroof $13.00 PV re- do $15.00 Total $30.00 Solar $30.00 Solar $3.00 Roof

47 Perfect Platform Metal Roofs Service Life of Low Slope SSMR in excess of 66 years conservatively projected

48 Perfect Platform Metal Roofs The ultimate sustainable roof: Galvalume steel SSMR has a year service life (MCA Study) 93.3% recycle rate Steel is the most highly recycled construction material

49 Perfect Platform Metal Roofs Standing Seam SSMR Seam clamp Non-penetrating bracket

50 Perfect Platform Metal Roofs Non-Penetrating Clamps Freedom from roof penetrations Ease of installation UL and ETL approved No roof warranty issues

51 Perfect Platform Metal Roofs Non-Penetrating Clamps All equipment can be attached with non-penetrating clamps Modules Combiner boxes Wire chases Zero Penetration

52 Perfect Platform Metal Roofs Natural air convection Reduces module temperatures Reduces roof temperatures Convec>ve air plenum ensures even cooler temperatures

53 Perfect Platform Back to the Money Non-Penetrating Clamps direct attached to SSR platform: Cost-effective installation Saving 10-15% of total system cost (material & labor) If system cost is $30/sf, the savings is $3-$4.50/sf

54 The relative initial costs: roof & solar (membrane roof) Total real cost of reroofing = $15/sf Long-term aggregated system cost = $48/sf $2.00 reroof $13.00 PV re- do $15.00 Total $30.00 Solar $30.00 Solar $3.00 Roof

55 The relative initial costs: roof & solar How does metal SSR stack up? Initial Aggregated cost = $31/sf Long term Aggregated Cost = $31/sf $31/SF total $27.00 Solar on metal $48/SF total $2.00 reroof $13.00 PV re- do $15.00 Total $30.00 Solar $30.00 Solar on membrane $4.00 roof $3.00 Roof

56 Perfect Platform Metal Roofs Synergies of the Perfect Platform Freedom from roof penetrations Preservation of the roof manufacturer s warranty Ease and simplicity of installation Strength, durability, longevity The ultimate cool roof Compatible service life to PV system Lower Initial Cost & Much Lower Life Cycle Cost

57 Perfect Platform Metal Roofs REMEMBER: ROOF AND PV ARE A SINGLE ASSET And a Sizeable Investment Treat them as: Heavy Duty Assets

58 Perfect Platform Metal Roofs Balance your assets! ROOF SOLAR

59 Course Summary The design professional will now be able to identify: Basics of a solar system Solar system components Basic rooftop applications What is Solar-Ready Compatible service life Non-Penetrating bracket attachment Perfect Platform for Solar Systems