Electric power is a necessity for the development of a society, without it would be impossible to see the world as we actually know. Its use is closely related to modern life and human development. Renewable energy is a good alternative for energy supply in regions where conventional power networks are absent or service quality is intermittent. The importance of these renewable energy sources lies in their lower emissions of carbon dioxide (CO2) to atmosphere and the reduced dependency on raw materials for importation and transport for power generation. Renewable energy is becoming economically competitive in the short to medium term. Hybrid power systems is a novel approach recently gaining popularity, since they combine multiple sources of renewable energy such as solar, wind, mini hydro-power, and also could include conventional generators as support. This combination allows the optimization of the power generation system by reducing emissions from the petroleum and coal based energy sources.
This paper presents a pilot hybrid power system design for the power supply in the hotel ‘La mansion’ in the town of Acacias, Meta (Colombia). Simulation and optimization were based on a computer program known as HOGA educational version 2.2, which initially considered economic parameters associated to photovoltaic system such as: overall power, replacement cost and operation and main- tenance costs, as well as all powers to consider in the simulation. The main purpose is to present an alternative power source in the hotel located in an area with high rates of power outages, and gradually include photovoltaic solar power combined with conventional energy supply, to meet the energy demand when the peak consumption periods occurs during power outages from the power grid.
This paper confirmed that hybrid power systems are a good energy supply alternative as auxiliary small power systems because they are capable of supplying the power demands during power grid outages or even in total absence of the power grid. Simulations showed that the combination of diesel and solar photovoltaics is a good alternative to meet lighting power demand in the hotel ‘La Mansion’, even in night hours thanks to the battery storage.
HOGA, hybrid systems, optimization, renewable energy
 Lakhoua, M.N., Walid, N. & Atef, C., System analysis of a hybrid renewable energy system. International Journal of Electrical and Computer Engineering (IJECE), 4(3), pp. 343–350, 2014. http://dx.doi.org/10.11591/ijece.v4i3.5880
 Gómez, M.F., Universal electricity access in remote areas: Building a pathway toward universalization in the Brazilian Amazon, Ph.D. thesis, KTH Royal Institute of Tech- nology, Stockholm, Sweden, 2014.
 Perez-Ramirez, R., Perez-Lopez, A. & Martínez-Arremilla, J.C., Optimización de sistemas híbridos de energía para la electrification rural de comunidades indígenas de mexico. Ingeniería Agrícola y Biosistemas, 3, pp. 33–39, 2011. http://dx.doi.org/10.5154/r.inagbi.2010.10.017
 National Renewable Laboratory, Hybrid optimizaciíon model for electric renewable, available at: http://www.nrel.gov/analysis/models_tools.html, Last access on January 2015.
 Muñoz, Y., Guerrero, J. & Ospino, A., Evaluation of a hybrid system of renewable electricity generation for a remote area of colombia using homer software. Tecciencia, 9(17), pp. 57–67, 2014. http://dx.doi.org/10.18180/tecciencia.2014.17.6
 Dufo-Lopez, R. & Bernal-Agustín, J.L., Design and control strategies of pv-diesel sys- tems using genetic algorithms. Solar Energy, 79(1), pp. 33–46, 2005. http://dx.doi.org/10.1016/j.solener.2004.10.004
 López, R.D., Dimensionado y control óptimos de sistemas híbridos aplicando algorit- mos evolutivos, Ph.D. thesis, Universidad de Zaragoza, 2007.
 Liu, B.Y. & Jordan, R.C., The interrelationship and characteristic distribution of direct, diffuse and total solar radiation. Solar Energy, 4(3), pp. 1–19, 1960. http://dx.doi.org/10.1016/0038-092X(60)90062-1
 Unidad de Planeaciíon Minero Energíetica UPME, Atlas de radiaciíon solar de colom- bia, available: http://www.upme.gov.co, Last access on September 2014.
 NASA, Surface metereology and solar energy, available: https://eosweb.larc.nasa.gov/ sse, Last access on November 2014.
 Nossa, J.P. & Romero, E., Diseño de un sistema fotovoltaico aislado para el hotel la Mansion de Acacias (Meta), Master’s thesis, Universidad de Cundinamarca, Fusagas- ugía, Colombia, 2014.
 Gudelj, A. & Krcum, M., Simulation and optimization of independent renewable energy hybrid system. Transactions on Maritime Science, 2(01), pp. 28–35, 2013. http://dx.doi.org/10.7225/toms.v02.n01.004