You are designing a residential PV solar system for an off-grid home you plan to build...
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You are designing a residential PV solar system for an off-grid home you plan to build in rural lowa. All household electricity will be provided by a PV solar/battery system. The system will be composed of 200 W modules (.e., panels). The cell efficiency of the panels is 17.2% and the installed cost of the system is $4.76/W including the PV panels, battery storage, inverters, and modifications to the house. Based on manufacturer's literature and specifications, the planned system has a manufacturing derate of 96%, a cleanliness factor of 98%, a temperature derate factor of 0.886, wiring and mismatch loss reduction factor 95%, an inverter efficiency of 90%, and a storage efficiency (i. e., round trip efficiency) of 75% based on input energy. Assume that all power delivered by the system is provided through the batteries. The PV solar panels proposed for this installation are guaranteed by the manufacturer to deliver 90% and 80% of their rated power at standard conditions (a solar irradiation of 1000 W/m² and 25°C) after 10 years and 20 years, respectively. Solar insolation in the region average averages 250 W/m² year round and the planned location for your home has a solar access factor of 95%. The system may be purchased through a local solar installation company with a 20 year payback period at an interest rate of 6%. O&M costs are $0.01/kWh. The household has a planned annual electricity usage of 12,500 kWh. Each panel requires 1.47 m² of roof area. The house will not be connected to the grid and there is no market for excess/unused electricity. a. What is the expected power output of a 200 W module in this system at the rated solar insolation of 1000 W/m² (W)? b. What is the expected annual electricity production of a 200 W panel on your planned home at this location (kWh/y)? c. What is the expected annual electricity production of a system composed of 5 panels including battery storage at this location when the system is new (kWhy)? Assume that all power is delivered through the batteries. d. What is the expected annual electricity production of a system composed of 5 panels including battery storage at this location when the system ten years after installation (kWh/ y)? Assume that all power is delivered through the batteries. e. How many panels are needed to provide 100% of the needed household power in year 20? f. What is the rated power of the system needed to provide 100% of the household power in year 20 (kW)? g. What roof area is required for the PV solar system to meet the annual electricity needs of the household (ft²)? h. What is the initial cost of the system after tax credits ($)? Assume a 30% federal tax credit but no local or state tax credit. 1. What is the expected levelized cost of the electricity generated by the system ($/kWh)? j. What is the annual energy production factor, P. for this location (kWh/y/kW)? You are designing a residential PV solar system for an off-grid home you plan to build in rural lowa. All household electricity will be provided by a PV solar/battery system. The system will be composed of 200 W modules (.e., panels). The cell efficiency of the panels is 17.2% and the installed cost of the system is $4.76/W including the PV panels, battery storage, inverters, and modifications to the house. Based on manufacturer's literature and specifications, the planned system has a manufacturing derate of 96%, a cleanliness factor of 98%, a temperature derate factor of 0.886, wiring and mismatch loss reduction factor 95%, an inverter efficiency of 90%, and a storage efficiency (i. e., round trip efficiency) of 75% based on input energy. Assume that all power delivered by the system is provided through the batteries. The PV solar panels proposed for this installation are guaranteed by the manufacturer to deliver 90% and 80% of their rated power at standard conditions (a solar irradiation of 1000 W/m² and 25°C) after 10 years and 20 years, respectively. Solar insolation in the region average averages 250 W/m² year round and the planned location for your home has a solar access factor of 95%. The system may be purchased through a local solar installation company with a 20 year payback period at an interest rate of 6%. O&M costs are $0.01/kWh. The household has a planned annual electricity usage of 12,500 kWh. Each panel requires 1.47 m² of roof area. The house will not be connected to the grid and there is no market for excess/unused electricity. a. What is the expected power output of a 200 W module in this system at the rated solar insolation of 1000 W/m² (W)? b. What is the expected annual electricity production of a 200 W panel on your planned home at this location (kWh/y)? c. What is the expected annual electricity production of a system composed of 5 panels including battery storage at this location when the system is new (kWhy)? Assume that all power is delivered through the batteries. d. What is the expected annual electricity production of a system composed of 5 panels including battery storage at this location when the system ten years after installation (kWh/ y)? Assume that all power is delivered through the batteries. e. How many panels are needed to provide 100% of the needed household power in year 20? f. What is the rated power of the system needed to provide 100% of the household power in year 20 (kW)? g. What roof area is required for the PV solar system to meet the annual electricity needs of the household (ft²)? h. What is the initial cost of the system after tax credits ($)? Assume a 30% federal tax credit but no local or state tax credit. 1. What is the expected levelized cost of the electricity generated by the system ($/kWh)? j. What is the annual energy production factor, P. for this location (kWh/y/kW)?
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ANSWER a The expected power output of a 200 W module in this system at the rated solar insolation of 1000 Wm W is 200 W b The expected annual electricity production of a 200 W panel on your planned ho... View the full answer
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