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Upcoming Schedule Module 4 Office Hours– Wednesday, April 25th, 1-2 Eastern– Register 8433584458928641 U.S. EPA Webinar on its Local Government Solar ProjectPortal– Wed, Apr 25, 2018 1-2 Eastern– Register 6149464354575105NREL 1
EPA’s Local GovernmentSolar Project ernment-solar-project-portal EPA invites local governments across thecountry to meet their environmental,energy, economic and domestic jobcreation goals through greater utilizationof solar energy from on and off site solarprojects that serve municipal operations.Local governments will find projectdevelopment resources andopportunities to learn from industryexperts and their peers.Share Your Progress and learn moreabout available resources and technicalsupport.NREL 2
System Advisor Model (SAM)Introduction Slides and DemoNate Blair and Janine Freeman
Tools That You Can Use PV modeling tools take into account the factors that impact project potentialPublicly available tools can be used to gauge initial potential, optimize systemsizing & refine project economicsExpertise andEffort neededLowRequired InputsKey Outputs Location Map interface with geospatial layersHigh-level economicsPVWattsCalculatorREopt Lite WebToolLow PV energy generation (noeconomics)Optimized system size and dispatchHigh-level economicsHighLocationSystem configurationLocationEnergy ConsumptionRate tariffEnergy ConsumptionRate tariffDetailed system configurationFinancing inputs System AdvisorModel (SAM) Detailed technology performanceDetailed economic modelingFEMP DGScreening ToolMedium4
Poll Questions Have you previously used REOpt? Have you previously used SAM?5
Steps to Modeling Renewable EnergyWeather DataCostsSystem SpecsCompensationSystem ltsAnnual, Monthly, and Hourly Output, Capacity Factor, LCOE, NPV, Payback, Revenue6
System Advisor Model (SAM)System Advisor ModelFree software that enables detailed performance and financialanalysis for renewable energy systemshttp://sam.nrel.gov/download7
TechnologiesPhotovoltaicsDetailed & PVWattsBattery StorageWindConcentrating solar powerGeothermalBiomassSolar water heatingFinancial arty ownershipPower purchase agreementssingle ownerequity flipssale-leasebackSimple LCOE calculator
What can you do with SAM?System Advisor Model Model a variety of technologies in a consistent platform Access high-quality performance and economic modelsdeveloped by NREL, Sandia, and other partners Calculate financial metrics such as LCOE, NPV, paybackfor projects in different markets Perform parametric and uncertainty analyses View and export modeling results in a variety of ways Access extensive help documentation, view tutorials andwebinars9
SAM UsersSystem Advisor ModelSAM is started once every 2 ½ minutesOver 65,000 active users in 130 countries90 webinars with 113,346 viewsUsers include Sunrun, Enphase, AEP, Southern Company, EPRI, & more10
Poll Questions Do you anticipate buying PV directly or throughthird-party owners at this point?11
Third Party Ownership From perspective of building owner (discount rate,etc.) Enter the offered PPA/lease offer Enter load data and rate data Model evaluates if the third-party owned project isprofitable ( positive net present value)12
Sub-system Components Working TogetherExample: Battery Model Designed primarily for behind-the-meteranalysis (residential and commercial scalesystems) Lithium ion and lead acid chemistriesincluding submodels for cell voltage,capacity, thermal, degradation, andreplacements Highly configurable manual dispatchcontroller Validated with laboratory measured testdata for two systems.13
Detailed photovoltaic modelModule Simple efficiency model Single diode modelo CEC database or datasheetIEC-61853 data based modelSandia PV Array Perf. ModelInverter Sandia/CEC grid-tied inverter modelDatasheet part-load efficiency curveDegradation Extrapolated single year Lifetime simulation of all years14
Complex System Feature: 3D shading calculator Fully integrated into SAM Calculates linear beam shading losses and skydiffuse view factor loss Imports 2D mapping underlays from Bing maps Diurnal or hourly/subhourly time series shadesimulation Estimation of nonlinear losses for shadedparallel strings Scripting to automate panel layout andimport/export geometry data15
Complex utility rate model optionsSAM models complex utility rates in conjunction with the NREL Utility Rate DatabaseRecent additions:Additional net metering options have been added and implemented to help users understand theimpact of different scenarios currently implemented in several states.New data browser categorizes and consolidates results.Linkage with OpenEI rate database improved and expanded for some international rates.http://www.openei.org16
Several ways to enter building load data Load profile in a filethat can be scaledfor monthly values. Residential loads:Use data about thebuilding to createload data withconsistent weatherdata Macro to downloadload data fromOpenEI17
Putting it all together: Dispatch and degradationBattery meets portion of load duringpeaks4 kW PV system2 kW peak loadUser input degradation with cyclingand depth-of-dischargeBattery replacementsresult in additional costs18
Extending SAMDesktop Application Advanced Analysis Featuresoo ParametricStochastic (and for O&M)P50/P90Built-in Scripting LanguageMacrosoWritten with SAM scripting languageoooo C/C , Python, C#, JavaMatlab, VBAPHPiOS And Android (NEW!!!)Web Services API (PVWatts Only)Open-sourced SAM code (NEW!!!)inputsoutputsSAM Simulation Core (SSC)PVC/C CSPPythonSWHMATLABSDKRequires programming skills Software Development Kit (SDK)SAM project file CodeoFinancials.NETJavaExternal applications19
Poll Questions Do you anticipate using SAM in a way other than viathe desktop tool?20
How to Interact with the SAM team and get help? Website – http://sam.nrel.govo Support Forum – Ask your question!o General info/ online help file / contact info YouTube Channelo https://www.youtube.com/user/SAMDemoVideoso All prior webinars and seminars Bi-Monthly Round Table sessionso SAM team asks questions liveand interactively Email Supporto SAM support can provideemail support if question/bugis involved21
Other Resources OnlineThe following information resources about SAM are available. News Webinars (mostly on the SAM YouTube channel) Weather Data (Description of various weather data sources) Sample Files (particularly scripting language examples) Financial Model Documentation Performance Model Documentation (detailed descriptions) System Cost Data (sources and latest cost data discussion) Case Studies and Validation (all data/files from ourvalidations) Libraries and Databases (i.e. module and inverter specs) Source Code (linkages to Open Source code on GitHub)22
Live Demo1. Before you’ve issued a request for proposals: PVWatts Financing OptionsooBuying the system yourself (Commercial model)Third party ownership2. After you’ve received bids: Detailed PV Third Party OwnershipoParametric analysis with multiple PPA price offers23
Thank you! Questions?Janine Freeman - project lead, photovoltaic and wind modelsNick DiOrio - code architecture, battery storage modelsNate Blair - emeritus lead, financials, costs, systemsSteve Janzou - programming, utility rate structures (subcontractor)Paul Gilman - user support and documentation (subcontractor)Ty Neises - concentrating solar power modelsMike Wagner - concentrating solar power modelshttp://sam.nrel.gov
Selecting a Technology and Financial ModelNREL 25
Select a Weather FileNREL 26
Choose a Module and an InverterNREL 27
Set Up Your SystemNREL 28
Optionally, Enable a BatteryNREL 29
Define Costs, Financial ParametersNREL 30
Examine Outputs in a Variety of WaysNREL 31
How to Learn More and Get Help Website – http://sam.nrel.gov– Support Forum – Ask your question!– Documentation / case studies / general infoWebinars/YouTube Channel– https://sam.nrel.gov/webinarsBi-Monthly Round Table sessions– Ask the SAM team questions liveEmail Support for complex questionsNREL 32
System Advisor Model (SAM) Introduction and Demonstration Subject: Presentation to introduce and demonstrate the System Advisor Model for the Solar PV C
