Clean water supply in remote rural communities is a persistent problem in Pakistan. The absence of the electric grid in remote villages aggravates the problem since the essential energy service for underground water pumping cannot be supplied. Solar photovoltaic powered water pumping system (PVWPS) presents a promising solution for off-grid areas. Integrated with water filtration plant, this can provide access to clean water in an isolated but optimal fashion. Various PVWPS models have been developed for different regions of the world, presenting customized solutions for climatic conditions. Most of them incorporate climatic data as input to simulate and validate the pumped flow rate, with a primary focus on different aspects of the energy conversion chain and models of solar PV arrays.

Only a few models involve the water collection profile (from the storage tank) as an input parameter. This allows the viability assessment of the dynamic behaviour of the system, designed on static water requirement data. However, such a model for the climatic conditions of Pakistan has not been developed, to the best of our knowledge. This thesis aims to develop a model of PVWPS including climatic data and water collection profile as input parameters, along with the design incorporating factor of soiling losses for particular conditions of Lahore, Pakistan. Moreover, underground water salination is recurrent in many parts of the country. A study of electrodialysis reversal desalination was conducted to integrate water desalination based on electrodialysis reversal with the aforementioned water pumping model to design a holistic solution. The model is simulated on MATLAB Simulink, using the climatic data from NREL yearly database.