Global horizontal irradiance (GHI) is the total solar radiation received by a surface horizontal to the ground. This value includes both the direct normal irradiance and the diffuse horizontal irradiance, and is of particular interest to photovoltaic installations. Data measure the average of annual sums from 1994 Ð 2013 simulation, and was completed by GeoModel Solar.The map is an un-validated, satellite-derived estimate. As part of phase II of the WBG initiative, these maps will be validated through the use of ground measurement data, and until the data collection period is finished should be considered for policy use, rather than energy prospecting, following IRENA's classification of renewable energy data. For complete terms of use, please visit http://globalatlas.irena.org/terms_wbg_esmap.aspx . For full metadata, reports, and data download, please visit http://www.esmap.org/re_mapping_zambia

VAISALA Global Solar Dataset 3km with units in W/m²/day VAISALA Global Solar Dataset provides average annual GHI at a 3km spatial resolution. Average values are based on more than 10 years of hourly GHI data and derived from actual, half-hourly, high-resolution visible satellite imagery observations via the broadband visible wavelength channel at a 2 arc minute resolution. VAISALA processed this information using on a combination of in-house research and algorithms published in peer-reviewed scientific literature. The dataset validated well when compared with observations from 120 geographically distributed surface stations around the globe (validation paper available here: http://www.vaisala.com/en/energy/Documents/WEA-ERG-3TIER-Global%20Wind%20Dataset.pdf). The information provided in the Global Atlas is meant to inform high-level policy debate (identification of opportunity areas for further prospection, preliminary assessment of technical potentials), or to perform market screening (cross referencing the resource information with policy information). It is suitable for decision-making activities, excluding financial commitments. It is a subset of a more detailed, long-term dataset, which includes hourly values of GHI, DNI, and other weather variables. VAISALA can provide this information and other customized services to facilitate project-specific or regional development, financial planning, and energy scheduling. By using this dataset, the user accepts VAISALA Terms and Conditions shown here: http://globalatlas.irena.org/VAISALA-terms-conditions.aspx Please access he data quality information for this dataset at: http://globalatlas.irena.org/dqif/publishdata.aspx?datasetid=3033. Also for additional information please download the data quality framework report at: goo.gl/T2wMaq

Location of the solar measurement stations in Mongolia with measurements of the Direct, Diffuse and Global radiation components. The full record covers the period from 2004 to 2012. The data record available through the Global Atlas is an extract which covers the year of 2012. The data was supplied by the Ministry of Energy of Mongolia.

Surface solar irradiation, or daily solar exposure in Egypt in Wh/m2. Direct. July. 10-years average (2005-2014) of monthly mean of daily irradiation received on a horizontal plane (or a plane always facing the sun if DNI). Copyright 2015 Port Said University, Faculty of Science, Department of Physics MINES ParisTech has developed the Heliosat-2 method that converts 15 min Meteosat images into irradiation maps and stores them into the HelioClim-3 database version 4. A monthly irradiation is computed only if at least 25 daily irradiations are valid in the month. To complete the month, the irradiation of a missing day is computed by taking into account the mean value of the valid days and the daily irradiation at the top of atmosphere for this missing day. A day is valid if the database contains at least one 15-min irradiation for this day. Gaps in a day are filled by taking into account the available 15-min irradiation and the 15-min irradiation at the top of atmosphere. The other irradiation components (direct, diffuse) received on an horizontal or plane normal to sun rays are then computed using a published empirical model. HelioClim-3 data and diffuse and direct components on any plane are provided on the Web via the SoDa Service (www.soda-is.com and pro.soda-is.com) since 2004. Such data are used by academics for teaching and research in solar energy, environment, climate and others, and by companies for the sitting of solar plants (PV, CST), their sizing, and the monitoring of their production.The French company Transvalor is in charge of the SoDa Service and provides also a series of user-tailored services, such as maps similar to those for Egypt. More Information: Heliosat-2 publication: http://hal.archives-ouvertes.fr/docs/00/36/13/64/PDF/solar_energy04_heliosat2.pdf HelioClim-3: http://www.soda-pro.com/help#helioclim

Surface solar irradiation, or daily solar exposure in Egypt in Wh/m2. Diffuse. Average year 2005. 10-years average (2005-2014) of monthly mean of daily irradiation received on a horizontal plane (or a plane always facing the sun if DNI). Copyright 2015 Port Said University, Faculty of Science, Department of Physics MINES ParisTech has developed the Heliosat-2 method that converts 15 min Meteosat images into irradiation maps and stores them into the HelioClim-3 database version 4. A monthly irradiation is computed only if at least 25 daily irradiations are valid in the month. To complete the month, the irradiation of a missing day is computed by taking into account the mean value of the valid days and the daily irradiation at the top of atmosphere for this missing day. A day is valid if the database contains at least one 15-min irradiation for this day. Gaps in a day are filled by taking into account the available 15-min irradiation and the 15-min irradiation at the top of atmosphere. The other irradiation components (direct, diffuse) received on an horizontal or plane normal to sun rays are then computed using a published empirical model. HelioClim-3 data and diffuse and direct components on any plane are provided on the Web via the SoDa Service (www.soda-is.com and pro.soda-is.com) since 2004. Such data are used by academics for teaching and research in solar energy, environment, climate and others, and by companies for the sitting of solar plants (PV, CST), their sizing, and the monitoring of their production.The French company Transvalor is in charge of the SoDa Service and provides also a series of user-tailored services, such as maps similar to those for Egypt. More Information: Heliosat-2 publication: http://hal.archives-ouvertes.fr/docs/00/36/13/64/PDF/solar_energy04_heliosat2.pdf HelioClim-3: http://www.soda-pro.com/help#helioclim

Surface solar irradiation, or daily solar exposure in Egypt in Wh/m2. Direct. February. 10-years average (2005-2014) of monthly mean of daily irradiation received on a horizontal plane (or a plane always facing the sun if DNI). Copyright 2015 Port Said University, Faculty of Science, Department of Physics MINES ParisTech has developed the Heliosat-2 method that converts 15 min Meteosat images into irradiation maps and stores them into the HelioClim-3 database version 4. A monthly irradiation is computed only if at least 25 daily irradiations are valid in the month. To complete the month, the irradiation of a missing day is computed by taking into account the mean value of the valid days and the daily irradiation at the top of atmosphere for this missing day. A day is valid if the database contains at least one 15-min irradiation for this day. Gaps in a day are filled by taking into account the available 15-min irradiation and the 15-min irradiation at the top of atmosphere. The other irradiation components (direct, diffuse) received on an horizontal or plane normal to sun rays are then computed using a published empirical model. HelioClim-3 data and diffuse and direct components on any plane are provided on the Web via the SoDa Service (www.soda-is.com and pro.soda-is.com) since 2004. Such data are used by academics for teaching and research in solar energy, environment, climate and others, and by companies for the sitting of solar plants (PV, CST), their sizing, and the monitoring of their production.The French company Transvalor is in charge of the SoDa Service and provides also a series of user-tailored services, such as maps similar to those for Egypt. More Information: Heliosat-2 publication: http://hal.archives-ouvertes.fr/docs/00/36/13/64/PDF/solar_energy04_heliosat2.pdf HelioClim-3: http://www.soda-pro.com/help#helioclim

Surface solar irradiation, or daily solar exposure in Egypt in Wh/m2. Global. Average year 2012. 10-years average (2005-2014) of monthly mean of daily irradiation received on a horizontal plane (or a plane always facing the sun if DNI). Copyright 2015 Port Said University, Faculty of Science, Department of Physics MINES ParisTech has developed the Heliosat-2 method that converts 15 min Meteosat images into irradiation maps and stores them into the HelioClim-3 database version 4. A monthly irradiation is computed only if at least 25 daily irradiations are valid in the month. To complete the month, the irradiation of a missing day is computed by taking into account the mean value of the valid days and the daily irradiation at the top of atmosphere for this missing day. A day is valid if the database contains at least one 15-min irradiation for this day. Gaps in a day are filled by taking into account the available 15-min irradiation and the 15-min irradiation at the top of atmosphere. The other irradiation components (direct, diffuse) received on an horizontal or plane normal to sun rays are then computed using a published empirical model. HelioClim-3 data and diffuse and direct components on any plane are provided on the Web via the SoDa Service (www.soda-is.com and pro.soda-is.com) since 2004. Such data are used by academics for teaching and research in solar energy, environment, climate and others, and by companies for the sitting of solar plants (PV, CST), their sizing, and the monitoring of their production.The French company Transvalor is in charge of the SoDa Service and provides also a series of user-tailored services, such as maps similar to those for Egypt. More Information: Heliosat-2 publication: http://hal.archives-ouvertes.fr/docs/00/36/13/64/PDF/solar_energy04_heliosat2.pdf HelioClim-3: http://www.soda-pro.com/help#helioclim

Surface solar irradiation, or daily solar exposure in Egypt in Wh/m2. Global. Average year 2008. 10-years average (2005-2014) of monthly mean of daily irradiation received on a horizontal plane (or a plane always facing the sun if DNI). Copyright 2015 Port Said University, Faculty of Science, Department of Physics MINES ParisTech has developed the Heliosat-2 method that converts 15 min Meteosat images into irradiation maps and stores them into the HelioClim-3 database version 4. A monthly irradiation is computed only if at least 25 daily irradiations are valid in the month. To complete the month, the irradiation of a missing day is computed by taking into account the mean value of the valid days and the daily irradiation at the top of atmosphere for this missing day. A day is valid if the database contains at least one 15-min irradiation for this day. Gaps in a day are filled by taking into account the available 15-min irradiation and the 15-min irradiation at the top of atmosphere. The other irradiation components (direct, diffuse) received on an horizontal or plane normal to sun rays are then computed using a published empirical model. HelioClim-3 data and diffuse and direct components on any plane are provided on the Web via the SoDa Service (www.soda-is.com and pro.soda-is.com) since 2004. Such data are used by academics for teaching and research in solar energy, environment, climate and others, and by companies for the sitting of solar plants (PV, CST), their sizing, and the monitoring of their production.The French company Transvalor is in charge of the SoDa Service and provides also a series of user-tailored services, such as maps similar to those for Egypt. More Information: Heliosat-2 publication: http://hal.archives-ouvertes.fr/docs/00/36/13/64/PDF/solar_energy04_heliosat2.pdf HelioClim-3: http://www.soda-pro.com/help#helioclim

Surface solar irradiation, or daily solar exposure in Egypt in Wh/m2. Global. Average year 2014. 10-years average (2005-2014) of monthly mean of daily irradiation received on a horizontal plane (or a plane always facing the sun if DNI). Copyright 2015 Port Said University, Faculty of Science, Department of Physics MINES ParisTech has developed the Heliosat-2 method that converts 15 min Meteosat images into irradiation maps and stores them into the HelioClim-3 database version 4. A monthly irradiation is computed only if at least 25 daily irradiations are valid in the month. To complete the month, the irradiation of a missing day is computed by taking into account the mean value of the valid days and the daily irradiation at the top of atmosphere for this missing day. A day is valid if the database contains at least one 15-min irradiation for this day. Gaps in a day are filled by taking into account the available 15-min irradiation and the 15-min irradiation at the top of atmosphere. The other irradiation components (direct, diffuse) received on an horizontal or plane normal to sun rays are then computed using a published empirical model. HelioClim-3 data and diffuse and direct components on any plane are provided on the Web via the SoDa Service (www.soda-is.com and pro.soda-is.com) since 2004. Such data are used by academics for teaching and research in solar energy, environment, climate and others, and by companies for the sitting of solar plants (PV, CST), their sizing, and the monitoring of their production.The French company Transvalor is in charge of the SoDa Service and provides also a series of user-tailored services, such as maps similar to those for Egypt. More Information: Heliosat-2 publication: http://hal.archives-ouvertes.fr/docs/00/36/13/64/PDF/solar_energy04_heliosat2.pdf HelioClim-3: http://www.soda-pro.com/help#helioclim

Surface solar irradiation, or daily solar exposure in Egypt in Wh/m2. Direct Normal (DNI). August. 10-years average (2005-2014) of monthly mean of daily irradiation received on a horizontal plane (or a plane always facing the sun if DNI). Copyright 2015 Port Said University, Faculty of Science, Department of Physics MINES ParisTech has developed the Heliosat-2 method that converts 15 min Meteosat images into irradiation maps and stores them into the HelioClim-3 database version 4. A monthly irradiation is computed only if at least 25 daily irradiations are valid in the month. To complete the month, the irradiation of a missing day is computed by taking into account the mean value of the valid days and the daily irradiation at the top of atmosphere for this missing day. A day is valid if the database contains at least one 15-min irradiation for this day. Gaps in a day are filled by taking into account the available 15-min irradiation and the 15-min irradiation at the top of atmosphere. The other irradiation components (direct, diffuse) received on an horizontal or plane normal to sun rays are then computed using a published empirical model. HelioClim-3 data and diffuse and direct components on any plane are provided on the Web via the SoDa Service (www.soda-is.com and pro.soda-is.com) since 2004. Such data are used by academics for teaching and research in solar energy, environment, climate and others, and by companies for the sitting of solar plants (PV, CST), their sizing, and the monitoring of their production.The French company Transvalor is in charge of the SoDa Service and provides also a series of user-tailored services, such as maps similar to those for Egypt. More Information: Heliosat-2 publication: http://hal.archives-ouvertes.fr/docs/00/36/13/64/PDF/solar_energy04_heliosat2.pdf HelioClim-3: http://www.soda-pro.com/help#helioclim