Renewable Energy Engineering Studio

Animated walkthrough — 9 calculators · 4 simulators · 5 design tools · 16 articles

EngineersUniverse Renewable Energy Engineering Studio ☀️ ENGINEERING LEARNING STUDIO
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Renewable Energy Engineering Studio
Solar PV NEC 690 BESS IEEE 1547 Microgrid EV Charging ITC/MACRS
🧮 Calculators 9
🎮 Simulators 4
📚 Articles 16
NEC 690 PV Array Current & OCPDLIVE
Maximum circuit current × 1.25 × 1.25 per NEC 690.8(A)(1). Wire ampacity and OCPD rating selection from Isc × temperature correction factor.
NEC 690IscOCPD
NEC 690.7 Max System VoltageLIVE
String open-circuit voltage temperature correction at lowest expected ambient. Voc × correction factor per NEC 690.7 table — validates 600V, 1000V, or 1500V string voltage limit.
VocNEC 690.7String Sizing
BESS Round-Trip EfficiencyLIVE
Usable kWh from rated capacity given charge/discharge efficiency. Cycle life at operating DoD and annual throughput (kWh/yr) for LFP and NMC chemistries per NFPA 855.
BESSLFPDoD
Solar Payback & IRRLIVE
Simple payback, NPV, and IRR from installed cost, annual savings, federal ITC (30%), MACRS 5-year depreciation, utility escalation rate, and 0.5%/yr module degradation.
IRRITCMACRS
Solar PV Production SimulatorLIVE
Adjust array kW, tilt, location irradiance, and day length to plot hourly DC/AC production curve and daily kWh. Models clear-sky bell curve with inverter and system losses per NREL PVWatts.
PVWattsHourly CurvekWh
Battery Dispatch SimulatorLIVE
Simulate BESS charge/discharge against a daily load + solar profile under TOU rates. Watch state of charge over the day and quantify peak-shaving and TOU arbitrage savings.
BESSTOU RatesPeak Shaving
Microgrid Islanding SimulatorLIVE
Balance generation (PV + battery + genset) against critical load during a grid outage. See whether the island holds and for how long, with hourly energy balance and survival time per IEEE 1547.
IEEE 1547IslandingResilience
EV Charging Load Profile SimLIVE
Simulate N EVs charging with arrival diversity and managed charging to build the aggregate site load profile, find coincident peak demand, and calculate the realized diversity factor per NEC 625.42.
NEC 625EV ChargingDiversity Factor
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Solar PV How It Works: From Photons to Kilowatt-Hours
7 min
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NEC Article 690: Solar PV System Requirements for Electricians and Engineers
9 min
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Battery Energy Storage Systems (BESS): A Complete Introduction for Engineers
9 min
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Microgrids: Design, Operation, and the Future of Local Power
8 min
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EV Charging Systems and NEC Article 625: What Electricians and Engineers Need to Know
8 min
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Federal Solar Tax Incentives: Investment Tax Credit (ITC) and MACRS Depreciation
7 min
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Demand Charges, Time-of-Use Rates, and BESS: A Commercial Energy Cost Strategy
8 min
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NFPA 855: Battery Energy Storage Safety Standard
10 min
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Utility Interconnection Process: From Application to Permission to Operate (PTO)
10 min
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