Calculate wind turbine aerodynamics using Blade Element Momentum (BEM) theory. Compute tip-speed ratio, axial induction, power coefficient Cp, Betz limit, and rotor power output.
Wind Turbine Blade Aerodynamics & Betz Limit Calculator – TSR, Swept Area & Power
Calculate wind turbine aerodynamic swept area, kinetic wind power, Betz limit theoretical maximum (59.3%), rotor Tip-Speed Ratio (TSR), and electrical power.
Water Electrolysis Hydrogen Production & Efficiency Calculator – Free Tool
Calculate green hydrogen production rate, specific energy consumption (kWh/kg), Faraday efficiency, and LHV/HHV system efficiency for PEM, Alkaline, and SOEC electrolyzers.
Thermoelectric Generator (TEG) Seebeck Effect & Figure of Merit (ZT) Calculator
Calculate Seebeck open-circuit voltage, dimensionless figure of merit ZT, maximum electrical power, matched-load voltage, and conversion efficiency for thermoelectric generators (TEG).
Standby Generator Sizing Calculator – Whole House kW, Surge & ATS Amps
Calculate whole-house standby generator size in kW, motor starting surge watts, automatic transfer switch (ATS) amperage, and fuel consumption.
Solar Wire Size Calculator – DC Voltage Drop & AWG Gauge
Size photovoltaic DC and AC wire gauge (AWG / mm²) adhering to NEC 2% or 3% voltage drop standards, temperature derates, and conduit fill.
Solar Water Pump Sizing Calculator – Total Dynamic Head (TDH), GPM & PV Watts
Size DC solar submersible and surface water pumps for off-grid wells, livestock, and irrigation based on Total Dynamic Head (TDH), GPM, and solar array watts.
Solar Water Heater Calculator – Collector Area & DHW Savings
Size solar domestic hot water (SDHW) collectors, storage tank volume, solar thermal fraction, and energy savings over electric water heaters.
Solar Tracker Energy Gain Calculator – Single-Axis & Dual-Axis vs Fixed Tilt
Compare energy harvest gains between single-axis trackers (horizontal SAT), dual-axis trackers, and fixed-tilt PV arrays, including motor parasitic power and CAPEX ROI.
Solar Shading Loss Calculator – Tree & Obstruction Derate
Estimate photovoltaic solar output reduction from tree and obstruction shading, bypass diode activation, and string vs microinverter mismatch.