Environment & Energy Calculators

Carbon Footprint is evaluated from Car Miles Driven per Year, Car Fuel Efficiency and Flight Hours per Year. The calculation reports Driving Emissions, Flying Emissions and Home Energy Emissions.

LED Savings is evaluated from Old Bulb Wattage, Replacement LED Wattage and Number of Bulbs. The calculation reports Annual Energy Saved, Annual Dollar Savings and Payback Period.

Solar Panel Output is evaluated from Panel Wattage, Number of Panels and Peak Sun Hours per Day. The calculation reports System Size, Daily Output and Annual Output.

Water Usage is evaluated from Number of People, Average Shower Length and Showers per Day. The calculation reports Daily Water Use, Monthly Water Use and Estimated Monthly Water Cost.

Appliance Energy Cost is evaluated from Appliance, Custom Wattage and Hours Used per Day. The calculation reports Daily Energy Use, Annual Energy Use and Daily Electricity Cost.

CO₂ Electricity is evaluated from Monthly Electricity Usage, Grid / Source Type and Custom Emission Factor. The calculation reports Monthly CO₂ Emissions, Annual CO₂ Emissions and Trees Needed to Offset.

Solar System Size is evaluated from Monthly Electricity Usage, Peak Sun Hours per Day and Panel Wattage. The calculation reports Recommended System Size, Number of Panels Needed and Approximate Roof Area Required.

Water Footprint is evaluated from Beef Servings per Week, Pork/Lamb Servings per Week and Chicken/Turkey Servings per Week. The calculation reports Virtual Water per Day, Annual Virtual Water and Largest Water Contributor.

Heating Cost is evaluated from Home Size, Annual Heating Degree Days and Home Insulation Level. The calculation reports Annual Heat Load, Annual Fuel Used and Estimated Annual Heating Cost.

Household Energy is evaluated from Monthly Electricity, Monthly Natural Gas and Annual Heating Oil. The calculation reports Total Annual Energy, Total Annual CO₂ Emissions and Estimated Annual Energy Cost.

Rainwater Harvesting is evaluated from Roof Catchment Area, Annual Rainfall and Roof Surface Type. The calculation reports Annual Collection Potential, Average Monthly Collection and Recommended Tank Size.

Solar Hours is evaluated from US Region / City and Solar System Size. The calculation reports Peak Sun Hours per Day, Daily Solar Production and Annual Solar Production.

Cooling Cost is evaluated from Home Size, Annual Cooling Degree Days and AC SEER Rating. The calculation reports Annual AC Energy Use, Annual Cooling Cost and Peak Month Cost.

Flight Carbon is evaluated from Flight Distance, Cabin Class and Number of Passengers. The calculation reports Total CO₂e Emissions, Per Person Emissions and Carbon Offset Cost.

Irrigation Water is evaluated from Lawn/Garden Area, Climate Zone / Evapotranspiration and Plant Type. The calculation reports Weekly Water Needed, Monthly Irrigation Water and Estimated Monthly Irrigation Cost.

Solar Payback Period is evaluated from System Cost, Annual Electricity Savings and Federal Tax Credit. The calculation reports Net System Cost, Simple Payback Period and 25-Year Net Savings.

Diet Carbon is evaluated from Beef Servings per Week, Chicken Servings per Week and Fish / Seafood per Week. The calculation reports Annual Diet Emissions, Annual Emissions and Diet Category.

Home Energy Audit is evaluated from Home Size, Annual Heating Degree Days and Annual Cooling Degree Days. The calculation reports Annual Heating Cost, Annual Cooling Cost and Annual Water Heating Cost.

Wind Turbine Power is evaluated from Rotor Diameter, Average Annual Wind Speed and Capacity Factor. The calculation reports Swept Area, Estimated Rated Power and Annual Energy Output.

Battery Storage is evaluated from Daily Home Electricity Use, Target Backup Duration and What to Power During Backup. The calculation reports Battery Capacity Needed, Tesla Powerwall 3 Units and Estimated Battery System Cost.

Car Emissions is evaluated from Miles Driven per Year, Fuel Economy and Fuel Type. The calculation reports Annual CO₂ Emissions, Estimated Annual Fuel Cost and vs. Average EV on US Grid.

Heat Pump COP is evaluated from Outdoor Temperature, Heat Pump Type and Natural Gas Rate. The calculation reports Heat Pump COP at This Temperature, Heat Pump Cost per MMBtu and Gas Furnace Cost per MMBtu.

HVAC SEER is evaluated from Current AC SEER Rating, New AC SEER Rating and AC System Size. The calculation reports Old AC Annual Energy Use, New AC Annual Energy Use and Annual Savings.

Solar Battery Bank Size is evaluated from Daily Energy Consumption, Days of Battery Backup and Depth of Discharge. The calculation reports Total kWh Needed, Required Usable Capacity and Required Gross Battery Capacity.