The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008 
56 
4.5. Determination of solar energy for the object 
To properly estimate the effect of inclination angle and azimuth 
the relevant diagram was generated for northern latitude of 45 
degrees. The diagram defines the approximate percentage areas 
of solar energy in dependence of inclination and azimuth. 
azimuth 
Figure 10. Solar energy as the function of inclination and 
azimuth 
Now, the total solar energy on the object can be computed as 
follows: 
SE total = SE • Area • IA 
where SE tota i = Total solar energy [KW/day] 
SE = Solar energy in Slovenian zone [KW/m 2 /day] 
Area = area of the object [m 2 ] 
IA = Solar energy as the function of inclination and 
azimuth [%] 
With determined SE total it is now possible to estimate the 
economic viability of the potential solar power plant. If the 
result is positive further computations take place regarding 
technicalities of the entire project. If, again, the results are 
positive the actual elaboration of solar power plant takes place 
having all necessary economic, legal and technical implications. 
5. SYSTEM OPERATIONALITY 
The main goal of this project was to equip the photovoltaic 
engineers with fast and reliable tool to estimate the 
economically viable conditions for potential solar power 
exploitation. More detailed computations are made during 
project documents preparation. Therefore the operations are 
kept as simple as possible allowing effective relevant 
computations (the entire process requires at max 10 minutes). 
On the other hand the geoinformation infrastructure proves to 
be extremely usable especially in the domain of time and costs 
savings. 
6. FUTURE DEVELOPMENTS AND RECOMMEN 
DATIONS 
It must be emphasized that the described application of the 
geomatics is one of many being already operational. These are 
ranging from communities to enterprises management, support 
to water and energy supply, environment protection and many 
others. But as the rule of thumb we have to bear in mind that 
potential applications will only be successful if the user 
processes are clearly defined allowing optimal use of geomatics. 
LITERATURE 
Zaksek, K., Ostir K., Podobnikar T , 2003. Solar illumination 
radiation of Slovenia. Geodetski vestnik 47/2003 (1&2), pp. 55- 
63.