Energy System Simulators

AGV Battery Mission Energy Simulator

EV & Electrified Transport

Estimate AGV mission energy and SOC margin from vehicle mass, route distance, rolling resistance, battery capacity, and drivetrain efficiency.

Anaerobic Digester Biogas Yield Simulator

Renewable Energy

Predict daily biogas, methane and electricity output from anaerobic digestion of manure, food waste, sewage sludge or energy crops.

Anaerobic Digester Biogas Production Simulator

Renewable Energy

Design an anaerobic digestion (AD) plant that converts food waste, sewage sludge or animal manure into biogas through methane fermentation.

Battery Calendar Aging Arrhenius Simulator

Batteries

Estimate battery calendar fade and remaining capacity from storage temperature, SOC, storage time, reference fade rate, and activation energy.

Battery Cell Balancing (BMS) Simulator

Batteries

Battery Cell Balancing (BMS) Simulator: Design the cell balancing strategy of a series Li-ion battery pack for EVs or stationary ESS. Switch between passive …

Battery Equivalent Circuit Model Simulator

Batteries

Simulate Li-ion, LFP, and lead-acid battery discharge using the Thevenin ECM. Visualize terminal voltage and SOC in real time with adjustable capacity, R0, RC branch, and C-rate.

Battery Runtime (Peukert's Law) Simulator

Batteries

The "rated capacity" printed on a battery is not a single fixed number. The faster you draw current, the less total charge it delivers.

Battery Sizing Calculator — Required Ah, kWh & Cell Count Design

Batteries

Calculate battery capacity (Ah/kWh) instantly for Li-ion or Lead-Acid. Enter load, usage hours, backup days, and DOD. Perfect for solar, UPS, and off-grid power systems.

Battery SOC & Charge/Discharge Simulator — Li-ion / LFP / NiMH

Batteries

Battery State of Charge (SOC) Simulator: Set capacity, internal resistance, and C-rate to visualize discharge curves (voltage vs. SOC) via equivalent circuit…

Betz Limit Simulator — Theoretical Maximum Wind Turbine Efficiency

Renewable Energy

Betz Limit Simulator: calculate theoretical maximum wind turbine efficiency using power coefficient, rotor diameter, and axial induction factor analysis.

Biomass Energy Conversion Calculator

Renewable Energy

Calculate biomass energy efficiency: HHV/LHV, moisture, biogas yield, CO2 balance. For wood chips, residues. Compare emissions to oil.

Compressed Air Energy Storage Simulator

Thermal & Mechanical Storage

Compressed Air Energy Storage Simulator: A tool for grid-scale storage that compresses air into an underground cavern with surplus electricity and recovers i…

Concentrated Photovoltaic (CPV) Simulator

Renewable Energy

Concentrated Photovoltaic (CPV) Simulator: Design CPV modules that use Fresnel lenses to concentrate sunlight 500-2000x onto III-V triple-junction cells (InG…

Energy Storage Comparison — Ragone Plot Calculator

Thermal & Mechanical Storage

Compare energy storage technologies using a Ragone plot. Set your power and energy needs to find the best solution among Li-ion, supercapacitors, and more.

EV Charging Time Simulator

EV & Electrified Transport

EV Charging Time Simulator: A tool for estimating how long it takes to charge an electric vehicle. Adjust the battery capacity, start and target state of cha…

EV Driving Range & Energy Consumption Simulator

EV & Electrified Transport

Estimate the energy consumption (Wh/km) and driving range of a battery electric vehicle from its battery, vehicle data, drive cycle and ambient temperature.

EV Fast Charging C-Rate, Temperature & Degradation Simulator

EV & Electrified Transport

EV Fast Charging C-Rate, Temperature & Degradation Simulator: Explore the trade-off between EV DC fast charging speed and battery longevity. Tune chemistry, …

Flywheel Energy Storage & Coefficient of Fluctuation Calculator

Thermal & Mechanical Storage

Design flywheels for IC engines, punch presses, and wind turbines. Calculate required moment of inertia, stored energy, speed fluctuation, and burst safety factor in real time.

Francis Turbine Simulator

Renewable Energy

Francis Turbine Simulator: Design reaction turbines for hydropower with real-time performance analysis. Optimize head, flow, and efficiency parameters.'s most widely used reaction turbine for medium-head dam hydropower.

PEMFC Water Management Simulator

Hydrogen & Fuel Cells

PEMFC Water Management Simulator: Visualise the lifeline of a proton-exchange membrane fuel cell — its water balance. Move the sliders for current density, t…

Geothermal Binary Cycle (ORC) Power Simulator

Renewable Energy

Geothermal Binary Cycle (ORC) Power Simulator: Design a binary geothermal plant that drives an Organic Rankine Cycle with a secondary working fluid (R245fa, …

Geothermal Heat Pump GSHP Vertical Borehole COP Simulator

Renewable Energy

Geothermal Heat Pump GSHP Vertical Borehole COP Simulator: Design a ground-source heat pump (GSHP) that uses the stable 8-15 degC ground temperature as its s…

Ground-Source Heat Pump (GSHP) Borehole Design Simulator

Renewable Energy

Ground-Source Heat Pump (GSHP) Borehole Design Simulator: Size the vertical borehole heat exchanger (BHE) field of a ground-source heat pump using the ASHRAE…

Hydrogen FCV Fuel Economy & Range Simulator

Hydrogen & Fuel Cells

Hydrogen FCV Fuel Economy & Range Simulator: Design tool for hydrogen fuel-cell vehicles (Toyota Mirai, Hyundai Nexo, Honda CR-V e:FCEV, BMW iX5 Hydrogen). C…

Hydrogen Storage in MOF Simulator

Hydrogen & Fuel Cells

Hydrogen Storage in MOF Simulator: Design a hydrogen-storage system that physisorbs H2 onto a metal-organic framework (MOF). Change the MOF, the temperature,…

Kaplan Turbine Simulator

Renewable Energy

Design a Kaplan turbine, the axial-flow turbine shaped like a ship's propeller.

Lithium-Air Battery Energy Density Simulator

Batteries

Lithium-Air Battery Energy Density Simulator: The lithium-air (Li-O₂ / Li-CO₂) battery is often called the Holy Grail of energy storage: a theoretical 11,430…

Lithium Plating on Anode Fast-Charge Degradation Simulator

Batteries

Estimate the lithium plating risk on the anode surface during fast charging from C-rate, cell temperature, SOC and anode chemistry.

Lithium Plating Anode Overpotential Simulator

Batteries

Lithium Plating Anode Overpotential Simulator: Estimate lithium plating risk in Li-ion cells using Butler-Volmer kinetics. Sweep anode chemistry, C rate, cel…

Molten Salt Thermal Storage for CSP Simulator

Thermal & Mechanical Storage

Molten Salt Thermal Storage for CSP Simulator: Size the Solar Salt thermal energy storage subsystem at the heart of a Concentrated Solar Power (CSP) plant. V…

OTEC Ocean Thermal Energy Conversion Simulator

Renewable Energy

OTEC Ocean Thermal Energy Conversion Simulator: OTEC generates power from the modest 20°C temperature difference between tropical surface water and deep cold…

Offshore Floating Wind Turbine (Spar/Semi-Sub) Stability Simulator

Renewable Energy

Offshore Floating Wind Turbine (Spar/Semi-Sub) Stability Simulator: A design tool for floating offshore wind turbines (FOWTs) deployed at water depths of 50-…

Organic Rankine Cycle (ORC) Waste Heat Recovery Simulator

Thermoelectrics & Waste Heat

Organic Rankine Cycle (ORC) Waste Heat Recovery Simulator: Design an ORC that uses low-boiling organic fluids — R245fa, R134a, n-Pentane or Toluene — to conv…

Trombe Wall Passive Solar Heating Simulator

Renewable Energy

Trombe Wall Passive Solar Heating Simulator: A thick south-facing thermal-mass wall sits behind double glazing, soaks up the sun by day and releases the heat…

Pelton Turbine Simulator — Power and Efficiency of an Impulse Turbine

Renewable Energy

The Pelton turbine simulator computes the jet velocity, power output and hydraulic efficiency from net head, flow rate, speed ratio and bucket deflection angle in real time.

PEM Electrolyzer Hydrogen Production Simulator

Hydrogen & Fuel Cells

A real-time simulator for proton-exchange-membrane (PEM) water electrolyzer stacks.

PEMFC Polarization Curve Simulator

Hydrogen & Fuel Cells

Plot the V-i polarization curve of a proton-exchange membrane fuel cell (PEMFC) with the activation, ohmic and concentration overpotentials separated.

Perovskite Solar Cell J-V Curve Simulator

Renewable Energy

Perovskite Solar Cell J-V Curve Simulator: A live calculator for the J-V curve and conversion efficiency of perovskite solar cells, the fastest-rising third-…

Perovskite Solar Cell Efficiency Simulator

Renewable Energy

Perovskite Solar Cell Efficiency Simulator: Tune the composition, bandgap and architecture of an ABX3 perovskite cell and watch Jsc, Voc, FF, PCE and the Sho…

Photovoltaic Cell I-V Characteristics Simulator

Renewable Energy

Explore photovoltaic cell performance. Adjust irradiance, temperature & resistance in real-time to visualize dynamic I-V and P-V curves, maximum power point, and key parameters.

Zinc-Bromine (Zn-Br) Flow Battery Simulator

Batteries

Zinc-Bromine (Zn-Br) Flow Battery Simulator: A hybrid flow battery that plates zinc as a metal on the negative electrode and complexes bromine with a polybro…

Regenerative Braking Energy Simulator

EV & Electrified Transport

A tool to find how much of the kinetic energy an electric or hybrid vehicle would otherwise throw away as brake heat can be banked back into the battery.

Sodium-Ion Battery (NIB) Performance Simulator

Batteries

Sodium-Ion Battery (NIB) Performance Simulator: Combine Prussian-blue, layered-oxide or polyanion cathodes with hard-carbon or Na-alloy anodes and watch the …

SOFC Cell Voltage (V-I Curve) Simulator

Hydrogen & Fuel Cells

A real-time single-cell performance simulator for the high-temperature solid oxide fuel cell (SOFC).

Solar Panel Calculator

Renewable Energy

Estimate solar panel output, savings, and payback period. Enter your panel specs, location, and electricity price for a personalized calculation.

Solar Panel I-V Curve & Energy Yield Simulator

Renewable Energy

Simulate solar panel I-V/P-V curves in real-time. See irradiance & temperature effects, track MPP, and estimate monthly energy yield.

Solar Radiation Calculator — Tilted Surface Irradiance & Solar Altitude

Renewable Energy

Calculate solar altitude and beam irradiance instantly with our free solar radiation calculator. Perfect for PV design and building planning.

Solar Radiation & Optimal Tilt Angle Calculator

Renewable Energy

Calculate solar panel tilt, irradiance, and position with our free tool. Input location data for instant, accurate solar energy optimization.

Solar Thermal Collector Simulator — Hottel-Whillier-Bliss Efficiency

Renewable Energy

Simulate solar thermal collector performance. Adjust area, irradiance, and temperatures to compute heat output and daily energy yield. Optimize your system design.

Solid-State Battery Energy Density Simulator

Batteries

Solid-State Battery Energy Density Simulator: A design tool for solid-state batteries (SSBs), the key technology for next-generation electric vehicles and co…

Supercapacitor EDLC Ragone Plot Simulator

Batteries

Supercapacitor EDLC Ragone Plot Simulator: Calculate the stored energy, power density and RC time constant of an electric double-layer capacitor (EDLC) and p…

PCM Thermal Energy Storage Simulator

Thermal & Mechanical Storage

Design latent-heat storage systems with paraffin, salt hydrate, fatty acid or metallic PCMs.

Peltier Element & Thermoelectric Converter Calculator

Thermoelectrics & Waste Heat

Calculate Peltier cooling and Seebeck generation for thermoelectric modules. Use material data (Bi₂Te₃, PbTe, SiGe) and real-time ZT formulas for ΔTmax, COP, and efficiency.

Thermoelectric ZT Figure of Merit Simulator

Thermoelectrics & Waste Heat

A thermoelectric material that turns a temperature difference into electricity is ranked by a single dimensionless number, ZT = α²σT/κ.

Tidal Power & Ocean Current Energy Calculator

Renewable Energy

Calculate tidal turbine & barrage power in real-time. Compute Betz limit, AEP, LCOE, and energy output with our advanced tidal energy calculator.

Tidal Stream Turbine Cp & TSR Simulator

Renewable Energy

Tidal Stream Turbine Cp & TSR Simulator: Compare the heart of every tidal turbine — the power coefficient Cp and the tip-speed ratio TSR — across four famili…

Vanadium Redox Flow Battery (VRFB) Sizing Simulator

Batteries

A sizing tool for the vanadium redox flow battery (VRFB), a leading candidate for grid-scale energy storage.

Vertical Axis Wind Turbine (VAWT) Cp Design Simulator

Renewable Energy

Explore the Cp(λ) curve, output power, solidity and annual energy of Darrieus H-rotor, φ-type, Savonius and helical vertical axis wind turbines.

Wave Energy Converter (WEC) Power Simulator

Renewable Energy

Wave Energy Converter (WEC) Power Simulator: Compare the four main families of wave energy converters — Oscillating Water Column, point absorber, attenuator …

Wave Energy Converter (WEC) Power Estimation Simulator

Renewable Energy

Wave Energy Converter (WEC) Power Estimation Simulator: Estimate wave power flux (kW/m), single-device and array electrical output, and annual energy product…

Wind Farm Wake Loss Simulator

Renewable Energy

Explore how much the wake of an upstream turbine cuts the power of the turbines behind it.

Wind Turbine Blade Design (BEM Theory) — Chord & Power Coefficient Calculator

Renewable Energy

Apply Blade Element Momentum (BEM) theory to optimize wind turbine blade design, calculating chord, twist, and power coefficient to approach the Betz limit.

Wind Turbine Design Tool

Renewable Energy

Design your wind turbine power curve in real time. Adjust rotor diameter, wind speed, and Cp coefficient. Instantly calculate annual energy output.

Wind Turbine Blade Icing Energy Loss Simulator

Renewable Energy

Wind Turbine Blade Icing Energy Loss Simulator: Real-time estimator for the ice load, aerodynamic penalty, annual energy loss and value of mitigation at cold…

Wind Turbine Power Simulator — Betz Limit, Weibull Distribution & Annual Energy

Renewable Energy

Simulate wind turbine power output. Adjust rotor size, Cp, and wind stats. Learn the Betz limit (59.3%) and calculate Annual Energy Production (AEP).

Wind Turbine Power & Energy Calculator

Renewable Energy

Calculate wind turbine energy output with real-time power curves, Cp-TSR data, and Betz limit. Explore rotor swept area and Weibull distribution.