This post below is for anyone considering to install a small solar power system, but not interested to spend for a complete solar power system.
This solar powered UPS will cost anywhere between Rs. 40,000 to Rs. 65,000 for 0.5 KVA full set up. If you already have an UPS it will cost Rs. 25,000 to Rs. 32,000 for 500 watt solar panels.
You can install a small solar power system just to charge your UPS. This will not serve 100% of your power needs but just acts as a backup power. It also prevents your battery from getting fully discharged during 3-5 hr power cuts and increases your battery life.
BASIC SETUP
Below is a very simple and basic set up.
One catch when using your existing battery. If your existing battery is not deep cycle battery and you have power cuts longer than 5 hrs, you will loose battery life rapidly. Keep in mind never discharge your battery fully.
On a hybrid inverter you can set the threshold to be 50%. The inverter will shut off when the battery capacity falls below 50%. This way the battery will never discharge fully.
The above set up if you have an existing battery & UPS set up would cost around Rs. 8,000 for a panel of 150 watts and charge controller around Rs. 3,000.
You cannot however simply buy more solar panels in the future and connect it because charge controller cannot handle the additional power produced. So keep that in mind and have a planned installation. This system is sufficient if power cuts in your state are rare and you are just wanting it for emergency backup.....You are lucky one and you are probably in Gujarat..:)
A MODIFIED SET UP
This set up involves the same components in the figure above. By some rewiring it adds the following advantages.
1. Power is fed to your house first , then excess power charges your battery.
2. Your battery does not charge or discharge during the day.
3. You can add more solar panels in future.
This would cost the same Rs 8,000 for the panels(150 watts) and Rs 3,000 for the charge controller, if you have an existing battery/UPS set.
For this modified setup, I recommend having at least 500 Watts of solar power and a 0.5 KVA battery, because on a full drain on your battery, your batteries are more expensive to replace than the solar panels or inverter. For 500 watts of solar panels it would cost Rs. 32,000. If you don't have a battery you can get a 0.5 KVA battery for Rs. 16,000.
You can expand this system up to 1 KVA, if your experience is good and want to expand.Keep in mind the battery rating and solar power produced should match. Say for a 0.5 KVA battery , install 500 watts of solar panel. For 1 KVA battery , install 1000 watts of solar panel. If you are considering to expand then click here to know the pit falls to watch out for when installing solar power.
If you are wanting to install solar power just for cost savings, then make your home energy efficient first, before installing solar UPS or solar power. Click here to read on how to make your house energy efficient.
This solar powered UPS will cost anywhere between Rs. 40,000 to Rs. 65,000 for 0.5 KVA full set up. If you already have an UPS it will cost Rs. 25,000 to Rs. 32,000 for 500 watt solar panels.
You can install a small solar power system just to charge your UPS. This will not serve 100% of your power needs but just acts as a backup power. It also prevents your battery from getting fully discharged during 3-5 hr power cuts and increases your battery life.
BASIC SETUP
Below is a very simple and basic set up.
On a hybrid inverter you can set the threshold to be 50%. The inverter will shut off when the battery capacity falls below 50%. This way the battery will never discharge fully.
The above set up if you have an existing battery & UPS set up would cost around Rs. 8,000 for a panel of 150 watts and charge controller around Rs. 3,000.
You cannot however simply buy more solar panels in the future and connect it because charge controller cannot handle the additional power produced. So keep that in mind and have a planned installation. This system is sufficient if power cuts in your state are rare and you are just wanting it for emergency backup.....You are lucky one and you are probably in Gujarat..:)
A MODIFIED SET UP
1. Power is fed to your house first , then excess power charges your battery.
2. Your battery does not charge or discharge during the day.
3. You can add more solar panels in future.
This would cost the same Rs 8,000 for the panels(150 watts) and Rs 3,000 for the charge controller, if you have an existing battery/UPS set.
For this modified setup, I recommend having at least 500 Watts of solar power and a 0.5 KVA battery, because on a full drain on your battery, your batteries are more expensive to replace than the solar panels or inverter. For 500 watts of solar panels it would cost Rs. 32,000. If you don't have a battery you can get a 0.5 KVA battery for Rs. 16,000.
You can expand this system up to 1 KVA, if your experience is good and want to expand.Keep in mind the battery rating and solar power produced should match. Say for a 0.5 KVA battery , install 500 watts of solar panel. For 1 KVA battery , install 1000 watts of solar panel. If you are considering to expand then click here to know the pit falls to watch out for when installing solar power.
If you are wanting to install solar power just for cost savings, then make your home energy efficient first, before installing solar UPS or solar power. Click here to read on how to make your house energy efficient.
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