TOOLS

Independence calculator

You want to know what contribution a pv battery system can provide for the electricity supply of your home? With the independence calculator you can estimate your self-consumption rate and degree of self-sufficiency depending on the size of the pv battery system.

Units of energy calculator

Different units are used in the energy industry. Who wants to know how many kWh a BTU is or how many PJ a billion metric tons of crude oil gets perfect assistant here.

Calculation of sun position, sunrise and sunset

This tool calculates for all locations and time the azimuth and height angle of the position of the sun as well as sunset and sunrise. For all desired locations it also calculates the time of sunrise and sunset for a whole year.

Wind park performance analysis

This tool provides a rough estimation of the energy gain and the levelised electricity costs. Assistant tools also calculate the wind speed into other heights and estimate the air desnsity in dependence on the temperature and air pressure.

Performance analysis for grid-connected photovoltaic systems

This tool provides a rough estimation of the energy gain and the levelised electricity costs for grid-connected photovoltaic systems at standard inclinations..

US to metric unit converter

Temperature in Fahrenheit, length in yard, area in acres and fuel consumption in miles per gallon - custom US units are difficult to use for contries with metric units. Fortunately, the US unit converter gives advice.