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This site is a collection of useful tools to know and work with solar energy. Calculation of sun position, determination of the coordinates of any point on earth, analysis of photovoltaic systems, emissions CO2, etc.

		Photovoltaic payback Economic analysis of a photovoltaic system, with the determination of payback.
		Photovoltaic FAQ This section lists the FAQ (Frequently Asked Questions) on photovoltaic systems and in general the sources of renewable energy.

		Interactive Map Calculator of earth coordinates, with interactive Google Maps, tool to calcula latitude, longitude, distance (km, meters, mile, foot) between two or more points of the earth, or calculate area and perimeter . You can view this information simply by clicking on map.
		Sun Position Calculation of the position of the sun’s position in the sky at one point on the earth at a particular time of day. The calculated data are: solar angle of zenith and declination angle, the time of rise set and noon, the daylight with the difference from the previous and later day. It also displays graphs of the solar path.
		Distance Calculation of the distance (km, meters, mile, foot) between two point in the earth, is possible calcolate the bearing angle between the points and the destination point with start point, distance and bearing.

		CO2 Emissions An instrument to measure online savings kg or tonnes of CO2 per kWh of energy produced from sources that during the exercise of the power plant does not emit carbon dioxide anhydrite, such as photovoltaics. Enter the kWh produced by a year (or one day a month or the cycle of life 30 years) and the factor of the nation’s electricity mix.
		Unit of measure converter Conversion online from hundreds of units of measurement. Measure category; Length, Area, Volume, Plane angle, Solid angle, Mass, Density, Time, Frequency, Speed or velocity, Flow (volume), Acceleration, Force, Pressure or mechanical stress, Torque or moment of force, Energy, work, or amount of heat, Power or heat flow rate, Dynamic viscosity, Kinematic viscosity, Electric current, Electric charge, Electric dipole, Electromotive force, electric potential difference, Electrical resistance, Capacitance, Magnetic flux, Magnetic flux density, Inductance, Temperature, Information entropy, Luminous intensity, Luminance, Luminous flux, Illuminance, Radiation.
		Coordinates conversion Conversions of latitude and longitude geographic coordinates, in various formats (decimal, sexagesimal DD DM DMS) degrees minutes seconds. Useful in various activities of design, and for convert GPS data (Global Positioning System). You can also search the coordinates on map by clicking search icon (web page Earth coordinates).
		SunRise SunSet Calendar Calendar of sunrise and sunset the sun at any location on the planet for an entire year. The table shows the time and azimuth in degrees.

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