A virtue

A virtue - Electrifying the non electrified. In Pakistan there are more than 50,000 non electrified villages. Only in Peshawar more than 2500 schools are non electrified. I believe these people (surviving without electricity) are more hard working than any one else. What if this hard work is utilized in development of country by providing them the very basic need of electricity? Isn't it a virtue?&nbs...

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Solar is Cheaper

Solar is Cheaper - In Pakistan commercial unit of electricity costs you 27 rupees/unit. Solar PV Systems can surely give you big savings now. Let me explain you with an example Lump sum price of a long life solar pv system is 180,000 for 1kva system. This system generates 5 units per day (on average), and 150 units per month.  Per month electricity savings = 150 * 27 = 4050 PKR Savings in the 1st year= 4050 * 12 = 48,600 PKR Annual inflation > 11% Savings in the 2nd year = (48,600 * 0.11) + 48,600       ...

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Solar Capacity

The sun generates 370 trillion watts per day. Which is equal to 370,000 billion watts per day and further equals to 3,700,000 million watts per day. The average of solar radiation that reaches the earth is equal to 5KW/h per square meter. If we use 2% of the deserts of the world for solar PV plants this can generate electricity for the whole world...

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PV technology classes

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DC components of a solar PV Plant

DC system of a solar PV plant comprises of the following: Array(s) of PV modules. DC cabling (module, string and main cable). DC connectors (plugs and sockets). Junction boxes/ combiners. Disconnects/ switches. Protection devices. Earthing. ...

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200kW Off-Grid Solar PV System Design -1 hour Battery Backup - Hybrid

Project Requirements: Total load = 200kW Battery backup time = 1 hour Primary source = Solar PV Secondary source = Grid Tertiary source = Battery Bank System Design: Solar Panels: Wattage of single panel = 235Wp No. of solar panels = (Total load x 1.4) / 235                              ...

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How to design an Off-Grid (hybrid) solar PV system using SMA solar inverters

Information required: Load =? Backup time =? Connection type = single phase or three phase?   Design steps: Step 1 How to decide the battery bank? Lets say my backup time requirement is 2 hours Then battery capacity (Ah) can be calculated using the following formula Ah = (Total Load x Backup hours)/(DOD x P.F x SV) Where DOD - Depth of discharge P.F - Power factor SV - System voltage So Ah = (5000 x 2)/(0.6 x 0.8 x 48) = 434.02 Ah approximately equal to 400Ah Now my battery bank will consist of 8 batteries having 200Ah @ 48V...

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