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An Introduction to Solar Electric and EV Charging Stations

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  1. An Introduction to Solar Electric and EV Charging Stations Presented by: Derek Coen. Construction and Development Professional Development Frederick County Career & Technology Center Friday, October 21, 2011

  2. We are all Being Impacted by High Energy Costs.

  3. What has Been Done?

  4. Incentives are in place and Add Up Federal Tax Credit: Tax credit covers 30% of system cost. District of Columbia: Grants based on system size. Range from $1,500 to $16,500. Maryland: Grants based on system size range from $500 to $10,000. Montgomery County – Property Tax Credit of $5,000 of system cost. Howard County – Property Tax Credit of $5,000 of system cost. Net-Metering: All jurisdictions offer Net-Metering. Renewable Energy Credits (RECs): Provide additional incentives. Sales Tax Exemption: Many jurisdictions offer sales tax exemptions. Federal and local credits, grants and rebates add up to make the case for going solar very compelling.

  5. Other Initiatives Exist The Solar America Initiative The aim of the SAI is to achieve parity with grid electricity by 2015. “By 2016, we expect solar energy to be the least expensive source for consumers.”Rhone Resch, President SEIA

  6. Distributed Solar – The Four Pillars Incentives • Support range of system types/sizes • Large-scale, long-term programs • Performance-based Utility Rates & Revenue Policies • Solar-friendly rates • Align peak retail with wholesale Net Metering • Up to 2MW • Treat on-site power same as grid Interconnection • Simple rules • Fair fees Advocating cost-effective state policies and programs.

  7. How has Solar Electric Market Responded?

  8. U.S PV Installations & Market Share

  9. 2010 U.S. PV Installations

  10. The solar market will continue to grow at impressive rates. Solar Economics and Prospects A Summary of the Market • The global PV market has grown over 30%/year for the past 15 years. • The U.S. solar market grew 67% in 2010 ($3.6B to $6.0B). • Grid-tie installations grew 102% in 2010 (435 MW to 878 MW). • Sixteen states installed more than 10 MW of PV (four in 2007). • Over 100,000 Americans now work in the solar industry. • U.S. manufacturing of modules grew 62% in 2010. • Prices of solar panels have dropped to around $2.00/Watt today. • Tax credits, grants and loans are playing crucial roles.

  11. How Does Solar Energy Work?

  12. Solar Electric Power - The Basics

  13. How Much Sunlight is Required?

  14. What Direction are the Panels Pointed? Solar will not work for every location. Panels must be …… • Facing south • Angled to latitude • In the sun

  15. What are the Configuration Options? • Grid-tied • Represents 90% of solar PV market. • Takes advantage of Net-Metering option. • Simple system – modules, racks and inverter. • Does not work when grid is down. • Grid-tied with battery backup • Provides power when grid is down. • Is more expensive to design, install and maintain. • Used where grid interruptions can last several days and a generator is not feasible.

  16. What are the Configuration Options? Direct power Ideal for remote locations that only need power during the day. Solar module(s) powers fan or water pump. No battery or controller needed. • Off-grid • More complex and expensive. • Often used in remote off-grid areas. • Or, where electricity is inconvenient. • Batteries require regular maintenance.



  19. Solar System Components • Modules • Mounting systems and hardware • Combiner boxes and disconnect switches • Inverter

  20. Solar Modules Specifications (typical): Size: 60” x 33” x 1.8” Weight: 25 to 40 lbs Voltage: 17 to 36 vdc Watts: 175 to 230 Major Manufacturers: Evergreen Kyocera Mitsubishi Sharp Solar World

  21. Roof mounts • Ground mounts Mounting Systems • Pole mounts Static Mount or Tracking Systems

  22. Combiner Box: Enables the wiring of multiple strings of modules into a single inverter. • Disconnect Switch: Disconnects power between array and inverter and between grid and inverter. Can be integrated into inverter. • Combination Box: Performs the function of the combiner box and disconnect switch. Combiner Boxes, Disconnects and Combination Boxes

  23. Inverters • Converts DC power from solar panels to AC power for home use or Net-Metering uses. • Grid-tied inverters must match the frequency of the power grid and are more expensive. • Many inverters offer integrated combiner box and disconnect. • Manufacturers: Exeltech, Fronius, Kaco, Outback, SMA, Xantrex

  24. What are the Costs & Incentives of Solar Energy?

  25. National Average System Prices, 2010

  26. Monthly electrical savings of $60  Renewable Energy Credits (RECs) Other credits could apply  Interest on loans may be deductible  Property value increases  Provides hedge against rate increases Simplified System Costs with Incentives Maryland District of Columbia Virginia Solar electric systems in this size would save 75 tons of CO2 over 25 years.

  27. Construction and Development Professional Development Frederick County Career & Technology Center Friday, October 21, 2011 Presented by Derek Coen Slides Courtesy of Eaton Corporation

  28. Here come the EVs….. We hope! It’s not if … it’s when

  29. Why are we here…?

  30. EVs are a Growing Market • Oil Prices are on the rise. • Environmental concerns becoming prominent. • Regulations are increasing. • All major automakers are introducing EVs. • Many utilities are proposing cheaper ToU rates. • Tax Incentives • EV or Hybrid up to $7,500 • Alternative Fuel Vehicle Refueling Property • 30% up to $30,000 for businesses • 30% up to $1,000 for residences

  31. Understanding Terminology Hybrid Electric Vehicle Plug-in Hybrid Electric Vehicle Electric Vehicle

  32. How will I charge? • AC Level 1 is already here, allowing someone to charge anywhere • Convenient • Cheap • Slow • DC Level 2is needed to alleviate range anxiety • Will be convenient • Fast • Expensive • ACLevel 2appears to be the sweet spot • Moderate charge rate • Moderate cost • Moderate convenience

  33. EVSE Recent Installations Google Campus, Mountain View, CA City of Raleigh, NC City of Normal, IL

  34. EVSE Market Forecast 2011 - 2015 Source: Pike Research

  35. An Introduction to Photovoltaics (20 hr class): NABCEP Exam offered PV Installer Certification (2 day course) PV Systems - Technical, Design and System Overview (2 to 4 hr lass) PV Systems - Business, Markets and Technology Overview (2 to 4 hr class) PV & EV Products (1 to 4 hr classes) Solar Installation Lab (4 hour lab) IEC-Chesapeake – Learning Opportunities Visit for the latest schedule IEC-Chesapeake is proud to be recognized as a NABCEP approved training facility.

  36. EVSE Market Segments - 2015 Residential Linked to Automobile Availability/Purchase. Auto OEM’s & Utilities leading, Distribution to Follow Workplace Investing now. Early channel via System Integrators Public Investing Now. Early Channel via Utilities, Municipalities, Institutions Private Fleet & Military- Linked to Automobile Availability.

  37. Eaton Pow-R-Station™ Family: AC LEVEL 1 AC LEVEL 2 Resi AC LEVEL 2 DC LEVEL 2 QUICK CHARGE 8 – 12 hours 120 VAC 12A Hard Wired or Plug-in 3 – 6 hours 240 & 208 VAC 30A - 70A Hard Wired 15 – 30 minutes 208 VAC / 500VDC 150A – 162A Hard Wired 6 – 8 hours 240 VAC 16A – 30A Hard Wired or Plug-in Garage Garage RESI RESI RESI Garage C- Store Retail Work Retail Mixed Use Custom Retail Curbside Highway Rest Stop

  38. Pow-R-StationValue Added Peripherals • Authentication – Keypad, RFID, Key fob • Payment Solutions – Credit Card • Parking Lot Management • Metering – Revenue grade or not • Wireless Communication – WiFI or Cellular Remote Monitoring Tools: • Increase System Uptime • Reduce energy costs • Maximize charger reliability • Reporting & Monitoring Options available to meet client needs.

  39. Where can you learn more?

  40. Useful Websites - Database of State Incentives - Solar America Initiative - Solar News & Industry Information - Solar News & Industry Information - Education & Training - Interstate Renewable Energy Council – Education & Training - North American Board of Certified Energy Practitioners - Solar Energy Industry Association, Lobbying & Education - Solar Electric Power Association - American Solar Energy Society - Baltimore Gas & Electric - Dominion Virginia Power - PEPCO

  41. For further information contact IEC – Chesapeake or: Derek Coen Atlantic Electric Supply Corp. Washington, DC 202-526-1300

  42. Thank You