Energy, Solar & Clean Tech Engineering Hub
Advanced computational solvers for solar PV generation, battery energy storage (BESS), heat pumps, LCOE, grid arbitrage, and wind power mechanics.
Solar PV System Payback & ROI Calculator
Calculate exact simple payback period, net present value (NPV), and 25-year lifetime savings of a residential or commercial solar photovoltaic installation.
Solar PV System Sizing & DC kW Array Calculator
Determine the exact DC kilowatt rating and number of solar panels required to offset 100% of annual household or facility electrical consumption.
Home Battery Backup Duration & Storage Calculator
Calculate backup run-time duration in hours and days for home battery systems (Tesla Powerwall, Enphase, SolarEdge) under essential or whole-home load.
Heat Pump Seasonal COP & HSPF2 Energy Savings Calculator
Calculate operating electricity cost and heating dollar savings when upgrading from baseboard, furnace, or boiler heating to a modern inverter heat pump.
EV Charging Load, Time & Electrical Panel Capacity Calculator
Calculate charging speed (miles per hour), charge duration, breaker amperage, and continuous electrical panel load for electric vehicles across Level 1, 2, and 3 chargers.
Solar Inverter Sizing & DC-to-AC Overload Clipping Ratio
Calculate DC-to-AC inverter loading ratio (ILR), annual energy clipping loss percentage, and inverter size optimization for photovoltaic systems.
Commercial HVAC Chiller Tonnage & Cooling Load Calculator
Calculate chilled water cooling capacity in refrigeration tons (TR), kW thermal, and pump flow rate in GPM for commercial HVAC systems.
3-Phase Power Factor Correction & Capacitor Sizing Calculator
Calculate required capacitor kVAR bank size to correct lagging electrical power factor from inductive motors, eliminating utility penalty surcharges.
Solar Net Metering & Utility Feed-in Tariff Calculator
Calculate annual financial compensation under NEM 1.0, NEM 2.0, NEM 3.0 (California solar billing), and avoided cost wholesale credit tariffs.
Solar Panel Tilt & Azimuth Irradiance Optimizer
Calculate optimal fixed tilt angle and azimuth orientation to maximize annual solar photovoltaic kilowatt-hour harvest based on geographic latitude.
Wind Turbine Power Curve & Betz Limit Kinetic Yield Calculator
Calculate theoretical and electrical power output in watts and kWh from a wind turbine based on wind speed, rotor diameter, and aerodynamic power coefficient.
3-Phase & Single-Phase Transformer kVA Rating Calculator
Calculate full-load secondary current (FLA), primary current, and recommended standard transformer kVA size for commercial and industrial electrical distribution.
Electrical Wire Gauge & Voltage Drop Calculator (NEC)
Calculate conductor voltage drop percentage, terminal voltage, and minimum copper/aluminum AWG wire size compliant with NEC 3% branch circuit limits.
Geothermal Heat Pump Ground Loop Borehole Length Calculator
Calculate required vertical borehole depth or horizontal trench loop footage for closed-loop ground-source geothermal heat pump systems.
Compressed Air CFM Leak Cost & Pneumatic Audit Calculator
Calculate lost CFM flow rate, electric horsepower wasted, and annual dollar cost of compressed air leaks in manufacturing and industrial facilities.
Industrial Boiler Combustion Efficiency & Flue Heat Loss Calculator
Calculate combustion thermal efficiency, dry flue gas stack loss, and fuel savings from excess air and stack temperature optimization (Siegert formula).
Standby Generator kW vs Starting kVA Sizing Calculator
Calculate emergency standby generator sizing, accounting for locked rotor motor inrush starting kVA and continuous running kW loads.
Commercial LED Lighting Lumen-to-Watt Retrofit ROI Calculator
Calculate electrical energy savings, HVAC cooling load reduction, maintenance lamp replacement savings, and payback period for commercial LED lighting retrofits.
Variable Frequency Drive (VFD) Pump Affinity Law Savings Calculator
Calculate electrical energy savings and payback from installing a Variable Frequency Drive (VFD / VSD) on centrifugal pumps and fans using Affinity Laws.
Solar Thermal Domestic Water Heating Collector BTU Sizing
Calculate required flat plate or evacuated tube solar thermal collector aperture area in square feet to provide domestic hot water.
Heating & Cooling Degree Days (HDD / CDD) Thermal Audit Calculator
Calculate weather-normalized annual building thermal load in therms and kWh using Heating Degree Days (HDD) and Cooling Degree Days (CDD).
Battery Cycle Life vs Depth of Discharge (DoD) Degradation Calculator
Calculate total lifetime kilowatt-hour throughput and calendar battery lifespan for Lithium Iron Phosphate (LiFePO4) and NMC lithium-ion chemistries.
Off-Grid Diesel & Propane Generator Fuel Consumption Calculator
Calculate hourly fuel consumption in gallons, run-time on tank, and cost per kilowatt-hour for diesel, propane, and natural gas standby generators.
Electrical Power Quality Total Harmonic Distortion (THD) Calculator
Calculate Total Harmonic Distortion (THD % for voltage and current) from individual harmonic magnitudes compliant with IEEE 519 standards.
Data Center Power Usage Effectiveness (PUE) & Efficiency Calculator
Calculate Data Center PUE, Data Center Infrastructure Efficiency (DCiE), wasted facility cooling power, and annual carbon/energy costs.