Energy & Solar Calculators
Estimate electricity usage, energy costs and solar output.
Electricity Bill Calculator
Estimate electricity charges using units consumed and a per-unit rate.
Calculate Now → 🧮Solar Panel Calculator
Estimate the solar system capacity needed for daily energy usage.
Calculate Now → 🧮Electricity kWh Cost Calculator
Calculate electricity cost from energy consumption and tariff, including a fixed charge.
Calculate Now → 🧮Appliance Energy Calculator
Estimate electricity consumed and cost by an appliance over a period.
Calculate Now → 🧮Solar Payback Calculator
Estimate simple payback time from solar system cost and annual bill savings.
Calculate Now → 🧮Electricity Carbon Footprint Calculator
Estimate electricity-related emissions using a user-entered grid emissions factor.
Calculate Now → 🧮Solar Energy Generation Calculator
Estimate solar electricity generation from system capacity, peak sun hours and performance ratio.
Calculate Now → 🧮Electrical Energy Cost Calculator
Estimate electricity cost from energy consumption and tariff.
Calculate Now → 🧮Transformer Load Factor Calculator
Measure average transformer load relative to rated capacity.
Calculate Now → 🧮Transformer Overload Percentage Calculator
Calculate load above transformer rated capacity as a percentage.
Calculate Now → 🧮Solar Capacity Factor Calculator
Calculate solar plant capacity factor from generated energy and nameplate capacity.
Calculate Now → 🧮Energy Intensity Calculator
Calculate energy consumed per unit of production.
Calculate Now → 🧮Water Intensity Calculator
Calculate water use per unit of production.
Calculate Now → 🧮Carbon Intensity Calculator
Calculate emissions per unit of production.
Calculate Now → 🧮Solar Self-Consumption Calculator
Calculate the share of solar generation used directly on site.
Calculate Now → 🧮Solar System Size Calculator
Estimate required solar system capacity from daily energy use and peak sun hours.
Calculate Now → 🧮Energy Cost Savings Calculator
Estimate savings from reducing electricity consumption.
Calculate Now → 🧮Generator Fuel Consumption Calculator
Estimate generator fuel consumption and fuel cost from runtime.
Calculate Now → 🧮Battery Backup Runtime Calculator
Estimate backup duration from battery capacity, voltage and load.
Calculate Now → 🧮Power Factor Correction kVAR
Estimate capacitor kVAR needed to improve power factor.
Calculate Now → 🧮Transformer Efficiency
Calculate transformer output power as a percentage of input power.
Calculate Now → 🧮Energy Cost per Unit
Calculate average electricity cost per kWh.
Calculate Now → 🧮Solar Daily Generation
Estimate daily solar generation from system size, sun hours and performance ratio.
Calculate Now → 🧮Battery Energy Capacity
Calculate nominal battery energy from voltage and amp-hour capacity.
Calculate Now → 🧮Battery Charging Time
Estimate ideal battery charging time from capacity and charger current.
Calculate Now → 🧮Electrical Energy Consumption
Calculate energy consumption from power and operating hours.
Calculate Now → 🧮Transformer Loading Percentage
Calculate transformer loading against rated capacity.
Calculate Now → 🧮Solar Panel String Voltage
Estimate string voltage from modules connected in series.
Calculate Now → 🧮Solar Array Capacity
Calculate total DC solar array capacity.
Calculate Now → 🧮Battery Backup Duration
Estimate backup time from usable battery energy and connected load.
Calculate Now → 🧮Generator Load Factor
Calculate average generator load against rated output.
Calculate Now → 🧮Power Factor Correction kVAR
Estimate capacitor bank kVAR required to improve power factor.
Calculate Now → 🧮Solar Daily Energy Output
Estimate daily solar energy using system capacity, peak sun hours and performance ratio.
Calculate Now → 🧮Battery Depth of Discharge
Calculate consumed battery capacity as a percentage of rated capacity.
Calculate Now → 🧮Transformer Copper Loss
Estimate copper loss at a given load using rated copper loss and load fraction.
Calculate Now → 🧮Transformer Efficiency
Calculate transformer efficiency from output and total losses.
Calculate Now → 🧮Scope 1 Emissions Estimate
Estimate direct emissions from fuel use and an emission factor.
Calculate Now → 🧮Energy Cost per Production Unit
Calculate energy expense per manufactured unit.
Calculate Now → 🧮Three-Phase Energy Consumption
Estimate three-phase energy use from voltage, current, power factor and operating time.
Calculate Now → 🧮Transformer Load Percentage
Calculate transformer loading against its rated kVA capacity.
Calculate Now → 🧮Distribution Line Loss
Calculate line energy losses from input and delivered energy.
Calculate Now → 🧮AT&C Loss Percentage
Estimate aggregate technical and commercial loss from input energy and billed and collected energy.
Calculate Now → 🧮Power Factor Penalty Estimator
Estimate penalty from a tariff rule supplied as a percentage of the energy bill.
Calculate Now → 🧮Solar Plant Performance Ratio
Calculate solar performance ratio from actual and theoretical energy output.
Calculate Now → 🧮Solar Project Payback Period
Estimate simple payback period from project cost and annual savings.
Calculate Now → 🧮Battery Backup Time
Estimate backup duration from usable battery energy and connected load.
Calculate Now → 🧮Electric Motor Efficiency
Calculate motor efficiency from mechanical output and electrical input power.
Calculate Now → 🧮Electricity Carbon Emissions
Estimate CO₂ emissions from electricity consumption and an emission factor.
Calculate Now → 🧮Energy Intensity per Unit
Calculate energy consumed for each unit of production.
Calculate Now → 🧮Three-Phase Voltage Unbalance
Estimate voltage unbalance using maximum deviation from average phase voltage.
Calculate Now → 🧮Compressed Air Energy Cost
Estimate compressor electricity cost from input power and operating time.
Calculate Now → 🧮Transformer Load Loss Estimate
Estimate load losses using rated loss and squared load fraction.
Calculate Now → 🧮Electrical Demand Factor
Calculate maximum demand as a percentage of connected load.
Calculate Now → 🧮Electrical Load Factor
Calculate average load as a percentage of peak load.
Calculate Now → 🧮Solar Specific Yield
Calculate annual energy generated per installed kW of solar capacity.
Calculate Now → 🧮Solar Self-consumption Ratio
Calculate on-site consumed solar energy as a share of solar generation.
Calculate Now → 🧮Battery Round-trip Efficiency
Calculate discharged energy relative to charging energy.
Calculate Now → 🧮Fuel Carbon Emissions Estimator
Estimate carbon emissions from fuel use and an emission factor.
Calculate Now → 🧮Energy Cost per Production Unit
Calculate electricity expense per unit manufactured.
Calculate Now →