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Renewable Energy Calculators & Tools

kWh Calculator

kWh Calculator

 Calculator/Tool   

A helpful tool for estimating your electricity usage when you don't have old utility bills handy - and an essential tool for planning a system that will meet your electricity needs.
Power Ratings for Common Appliances

Power Ratings for Common Appliances

 Article    Calculator/Tool   

Quickly find the the typical power rating (in Watts) of many common household appliances. Use this information to help estimate how large your alternative energy system needs to be.
How to Size a Deep Cycle Battery Bank

How to Size a Deep Cycle Battery Bank

 Calculator/Tool   

If the battery bank is oversized, you risk not being able to keep it fully charged; if the battery bank is sized too small, you won't be able to run your intended loads for as long as you'd planned.
Sizing MPPT Charge Controllers

Sizing MPPT Charge Controllers

 Calculator/Tool   

Learn how to size an MPPT solar charge controller for your off-grid solar electric system and how to take advantage of some of this type of charge controller's benefits.
Power, Energy, and the Loads List

Power, Energy, and the Loads List

 Calculator/Tool   

Preparation for any off-grid electric system begins with assessment and calculation of your energy needs. The primary tool used for this task is a Loads List.
Components for Your Solar Panel (Photovoltaic) System

Components for Your Solar Panel (Photovoltaic) System

 Calculator/Tool   

A brief description of the major components of a Solar PV System. Note that components vary depending on whether or not batteries will be used in your system. There are additional small components required for a complete installation that are not listed here.

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