Energy savings percent

Simple estimate calculator for energy savings as baseline energy minus new energy.

Simple estimate calculator for efficiency as useful output divided by input.

Simple estimate calculator for CO2 emission from energy and a user-provided emission factor.

Simple estimate calculator for hydro power from density, gravity, flow rate, head, and efficiency.

Simple estimate calculator for unit energy cost from total lifetime cost and lifetime energy.

Calculates helper payback period from user-provided investment cost and annual savings.