Green Energy
The reduced cost of solar photo-voltaic panel has created interest in households to opt for a solar panel on their roof top we have been getting various inquiries for roof top system sizing. Typically a house requires an average load of 2KW and 8 hours for operation. Hence the total energy requirement is about 16 KWh per day. Solar PV acts as back up to the grid and if we consider power back up requirements for 50% of this load, the energy requirement from Solar PV should be of the order of 8 units per day. Typical solar panels of 1 kW capacity produce about 5 unit (KWh) energy per day. Hence for this capacity about 2-3 KW solar panels are required. It is important to size the inverter and battery system accordingly hence in order to store 10 KWh. Inverter is available in 1 KW, 2 KW, 2.5 kW and 5 KW capacities . If future expansion plans are to be considered, 5 KW is an appropriate selection so that another 2.5 KW can be added to the same inverter in future. If the overall system is operating at 24 volts DC, a 2.5 KW DC system will produce about 10 Amp current at peak noon. This current needs to be charging the appropriate battery bank typically the modules that generate electricity at 18 volt or 36 volt. A 36 volt module is appropriate to charge a battery of 24 volt capacity, in order to assess the battery size, the battery is generally available in 12 or 24 volts and accordingly parallel and series combination is done.
Battery capacity is determined as follows:
Total Load= 2000 W
System voltage =24 volts
Operating hours = 4 hours
Battery capacity = (2000 ×4) ÷24= 333.33 A-h
Generally battery discharge is maximum upto 80%. Hence it is advisable to have 20% extra capacity to meet the required power back up.
- Sharp Solar Small Home System
Sharp's Solar Small Home System (SHS) is a complete stand-alone solar generation system. With the Sharp solar panel and Sharp Power Control System, the system is perfect for powering lightings, fans, radios, laptops, battery chargers and small devices. Each...
- Inverter For Solar Panels
Inverter is a power converter which converts Direct Current (DC) into Alternating Current (AC). As most of modern appliances operate on 120 volts AC, an inverter plays a key role for your solar power system. It can convert the low voltage DC to the 120...
- Solar Charge Controller
Solar charge controller is a device which regulates voltage and/or current to protect batteries from overcharging in the solar photovoltaic system. It has been observed that most solar panels of 12 volts have output voltage of 16 to 20 volts approximately....
- How To Size Battery For Solar Panel
While designing a solar photovoltaic off-grid system, you need to determine required batteries. A little math is necessary to size batteries. An off-grid battery bank should be designed in such a way that the system is not only sufficient enough to supply...
- Roof Top System- Its Components
A Solar System generally comprises of the following elements: Solar Panel, a Charge Controller, a Power Inverter, a Monitor and Electrical Distribution System. As seen with each other technologies each component has different manufacturers , quality,...
Green Energy
How do I calculate the solar PV requirement for my house?
The reduced cost of solar photo-voltaic panel has created interest in households to opt for a solar panel on their roof top we have been getting various inquiries for roof top system sizing. Typically a house requires an average load of 2KW and 8 hours for operation. Hence the total energy requirement is about 16 KWh per day. Solar PV acts as back up to the grid and if we consider power back up requirements for 50% of this load, the energy requirement from Solar PV should be of the order of 8 units per day. Typical solar panels of 1 kW capacity produce about 5 unit (KWh) energy per day. Hence for this capacity about 2-3 KW solar panels are required. It is important to size the inverter and battery system accordingly hence in order to store 10 KWh. Inverter is available in 1 KW, 2 KW, 2.5 kW and 5 KW capacities . If future expansion plans are to be considered, 5 KW is an appropriate selection so that another 2.5 KW can be added to the same inverter in future. If the overall system is operating at 24 volts DC, a 2.5 KW DC system will produce about 10 Amp current at peak noon. This current needs to be charging the appropriate battery bank typically the modules that generate electricity at 18 volt or 36 volt. A 36 volt module is appropriate to charge a battery of 24 volt capacity, in order to assess the battery size, the battery is generally available in 12 or 24 volts and accordingly parallel and series combination is done.
Battery capacity is determined as follows:
Total Load= 2000 W
System voltage =24 volts
Operating hours = 4 hours
Battery capacity = (2000 ×4) ÷24= 333.33 A-h
Generally battery discharge is maximum upto 80%. Hence it is advisable to have 20% extra capacity to meet the required power back up.
- Sharp Solar Small Home System
Sharp's Solar Small Home System (SHS) is a complete stand-alone solar generation system. With the Sharp solar panel and Sharp Power Control System, the system is perfect for powering lightings, fans, radios, laptops, battery chargers and small devices. Each...
- Inverter For Solar Panels
Inverter is a power converter which converts Direct Current (DC) into Alternating Current (AC). As most of modern appliances operate on 120 volts AC, an inverter plays a key role for your solar power system. It can convert the low voltage DC to the 120...
- Solar Charge Controller
Solar charge controller is a device which regulates voltage and/or current to protect batteries from overcharging in the solar photovoltaic system. It has been observed that most solar panels of 12 volts have output voltage of 16 to 20 volts approximately....
- How To Size Battery For Solar Panel
While designing a solar photovoltaic off-grid system, you need to determine required batteries. A little math is necessary to size batteries. An off-grid battery bank should be designed in such a way that the system is not only sufficient enough to supply...
- Roof Top System- Its Components
A Solar System generally comprises of the following elements: Solar Panel, a Charge Controller, a Power Inverter, a Monitor and Electrical Distribution System. As seen with each other technologies each component has different manufacturers , quality,...