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Solar Advisor Model for Photovoltaic Systems

Solar Advisor Model for Photovoltaic Systems. Contents. This presentation is intended to follow the SAM introductory presentation. A separate presentation covers modeling concentrating solar power systems. Note that each of the following slides is annotated with presenter notes. 2.

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Solar Advisor Model for Photovoltaic Systems

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  1. Solar Advisor Modelfor Photovoltaic Systems NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC

  2. Contents This presentation is intended to follow the SAM introductory presentation. A separate presentation covers modeling concentrating solar power systems. Note that each of the following slides is annotated with presenter notes.. 2 User Interface Overview Modeling PV Systems National Renewable Energy Laboratory Innovation for Our Energy Future

  3. Solar Advisor Model for Photovoltaics User Interface Overview 3 National Renewable Energy Laboratory Innovation for Our Energy Future

  4. Main Window 4 National Renewable Energy Laboratory Innovation for Our Energy Future

  5. Access to Input Pages • Navigation menu provides access to input pages. • Green button indicates active page. 5 National Renewable Energy Laboratory Innovation for Our Energy Future

  6. Access to Results • Summary displays the results page with Metrics table, sliders, and graphs. • Spreadsheet opens the results workbook in Excel. • Time Series Graphs opens the data viewer. 6 National Renewable Energy Laboratory Innovation for Our Energy Future

  7. Access to Results • Changing the value of one or more inputs causes the Run Analysis button to replace the results buttons. 7 National Renewable Energy Laboratory Innovation for Our Energy Future

  8. Cases • A file contains one or more cases. • Cases allow for comparison of projects with different system configurations. locations, financing structures, etc. • A case consists of a complete set of inputs and results. • Tabs provide access to cases. • The current case is indicated by a green tab. 8 National Renewable Energy Laboratory Innovation for Our Energy Future

  9. Input Variable Types • By default, all data fields are populated by sample data. • Type values into fields, or link to cells in an Excel spreadsheet. 9 National Renewable Energy Laboratory Innovation for Our Energy Future

  10. Links to an External Workbook Excel SAM Inputs “SentTo” “CapturedFrom” 10 National Renewable Energy Laboratory Innovation for Our Energy Future

  11. Results Summary Page 11 National Renewable Energy Laboratory Innovation for Our Energy Future

  12. Results Spreadsheet • List of inputs • Cash flow detail • Hourly energy values • Monthly and annual averages 12 National Renewable Energy Laboratory Innovation for Our Energy Future

  13. Data Viewer • Graphical representation of hourly outputs • Statistical graphs 13 National Renewable Energy Laboratory Innovation for Our Energy Future

  14. Sliders 14 National Renewable Energy Laboratory Innovation for Our Energy Future

  15. Sliders 15 National Renewable Energy Laboratory Innovation for Our Energy Future

  16. Sensitivity Analysis • Assign multiple values to any input variable • Use graphs and sliders to view results 16 National Renewable Energy Laboratory Innovation for Our Energy Future

  17. Solar Advisor Model for Photovoltaics Modeling PV Systems 17 National Renewable Energy Laboratory Innovation for Our Energy Future

  18. PV Sample File 18 National Renewable Energy Laboratory Innovation for Our Energy Future

  19. PV Market Options 19 National Renewable Energy Laboratory Innovation for Our Energy Future

  20. Climate • Download an EPW file from the Energy Plus website (TMY3 files are available as EPW) • Choose a location from the list of built-in TMY2 files • Or, Convert a file to TMY2 using Meteonorm or other software (some conversion tools are available on the SAM Google Group) • Download a weather file in TMY2 format from the NREL Solar Prospector website (beta version) 20 National Renewable Energy Laboratory Innovation for Our Energy Future

  21. Utility Rates • Utility rates options apply only to systems on the customer’s side of the meter: Residential and Commercial • Two options: Flat rate and time-of-use schedule • Utility rate affects net present value and payback period, but not levelized cost of energy 21 National Renewable Energy Laboratory Innovation for Our Energy Future

  22. Financials • Choose market: Residential, commercial or utility • Choose financing type: Cash, debt, mortgage, etc. • Enter parameters • Results displayed as metrics (LCOE, NPV, IRR, etc.) and annual cash flow summary and detail LCOE and other economic metrics are very sensitive to financial inputs! 22 National Renewable Energy Laboratory Innovation for Our Energy Future

  23. Incentives • Incentive Types • Investment tax credit • Production tax credit • Capacity-based incentive • Production-based incentive • Incentives from up to four sources • Federal government • State government • Utility • Other • Modify Tax Implications • Taxable incentives • Incentive impact on depreciation 23 National Renewable Energy Laboratory Innovation for Our Energy Future

  24. System 24 • Configuration • Flat plate • Concentrating PV • Array • Layout (number of modules and inverters) • Tracking and orientation • Degradation and derating factors • Module • Single-point efficiency with temperature correction • Sandia PV Array Performance Model (David King et. al.) • CA Energy Commission / U of Wisconsin 5-parameter model • Single-point efficiency for concentrating PV • Inverter • Single-point efficiency inverter model • Sandia Inverter Performance Model (David King et. al.) National Renewable Energy Laboratory Innovation for Our Energy Future

  25. Costs • Module and inverter costs in $/W or $/unit. • Operation and maintenance (O&M) costs. • Fixed annual cost ($/yr) • Fixed per rated capacity ($/kW-dc) • Variable per total annual output ($/MWh-ac) • Default values are illustrative and not based on actual projects. • Actual costs depend on location, project type, market conditions • See SAM website for resources 25 National Renewable Energy Laboratory Innovation for Our Energy Future

  26. Questions? • Online Help and User Guide • Help menu and buttons • SAM Website • http://www.nrel.gov/analysis/sam • Google Groups • http://groups.google.com/group/sam-user-group • Email User Support • Solar_Advisor_Support@nrel.gov 26 National Renewable Energy Laboratory Innovation for Our Energy Future

  27. Thank You! 27 Solar_Advisor_Support@nrel.govhttp://www.nrel.gov/analysis/sam National Renewable Energy Laboratory Innovation for Our Energy Future

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