What is the most appropriate technique that can be used to extract sunshine/sunlight data for East Africa region?

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Michel Noussan Popular answer

You can try the tool PVGIS (http://re.jrc.ec.europa.eu/pvgis/apps4/pvest.php?map=africa), which gives some useful information about solar radiation for the site you are looking for. You can find daily radiation and monthly radiation, together with some information related to the sizing and design of a photovoltaic system.

Michel Noussan

Wanjohi Kibui

Hello Noussan Michel,Thank you so much for this idea.I have looked at the tool and its indeed a great tool.However,I cant see a link to have the data.Can the data be downloaded?It would be of great help to me

Uduak Akpan

In addition to the web application provided by Noussan Michel, you may download RETScreen software (it's a freeware) and access the database for solar irradiation of several towns in East Africa. HOMER energy should also be a useful tool but i'll go for RETScreen because you can use it for techno-economic feasibility studies

Thank you Uduak Akpan.Will take a look at it

The good thing is that you can have detailed data for the town you are looking for. However, there is not automatic donwload of the data. You can have monthly radiations and daily radiation for a given month. You should select the output you prefer (I usually use web page and copy paste to Excel). If you need multiple cities with a great level of detail, maybe RETScreen would be better. It depends on your need.

Have a nice day.

Bert Herteleer

IRENA (www.irena.org) has a global GIS atlas, which combines datasets of multiple countries and organisations: http://globalatlas.irena.org/ . Among others, it includes the NASA SSE dataset, which I have used in the past; this is also the dataset used by both HOMER (free version: v2.68) and RETScreen, which can be applicable for your needs.

www.irena.org

Thank you so much Bert.This has been so helpful for me.Will get back to you on my findings

Regards