I want to ask you what exactly does a Solar EPC company in India do? Why most firms are into EPC and not residential and whats the scope of work done in EPC, do they take only MW scale projects?
- Monika asked 10 years ago
- last active 10 years ago
Hi all, Our apartment association is considering going for partial solar solution to meet its needs and below is our requirement – Our monthly association EB usage is around 700 units. We are looking at installing a 2.5 KW solar system (with hybrid inverter) that will help us eliminate day time genset backup during summers. We would like this system to supply to 2 fans connected in each of 15 flats in our apartment to the common (association) EB grid. We would like to explore the feasibility of net-metering since beyond the backup, we have scope to route back to the grid and save on costs – esp. since we are falling in the highest slab of EB tariffs. Our association EB connection is a 3-phase system that supplies for a lift, motor and common lights. We are not looking for battery bank backup because of the above exclusive day time requirement. Location: Hyderabad, Andhra Pradesh Some questions we have are: 1. We are assuming that ‘Islanding Protection’ will ensure that in scenario of grid-failure or load shedding, our solar system would still be active within our apartment for the select points we have planned for. Is this a correct assumption or is it total shutdown/blackout if the grid fails? 2. Is the above setup feasibile with net-metering? Esp. since our solar generation is partial and is required to meet the daytime backup for select points (for which wiring is already in place – for genset backup). We only want to avoid daytime genset backup and save on the cost – esp. during summer load shedding. 3. Is the 20% AP state subsidy announced only for net-meter or is it for the entire system? Is this subsidy available for off-grid solutions as well? 4. MNRE indicative costs are way less than what it practically works out!! MNRE guideline cost for a SPV system without battery is Rs.100 per watt. 2.5 KW (without battery) guideline cost = 100*2500 = 250000 After MNRE 30% subsidy = Rs.175000 If AP state subsidy of 20% is applicable = Rs. 140000 I have since enquired with three top companies and I am getting quotations raging from 3Lakhs to 3.5 Lakhs!!! And this is post subsidy, which is makes it almost twice the guideline cost!! Am I missing something or is there plenty of scope for negotiations :)? Thanks in advance for you expert opinions/suggestions. Thanks & Best Regards, Srinivasan M
- Team Saurya asked 10 years ago
- last active 4 years ago
I have Sukam Falcon Plus 12v Inverter and normal 150Ah SuKam Bazooka Tubular battery.
I wish to install 500Wh Solar panel.
In online, found solar panels with 100W, 250W, 360W and 12V, 24V, 48V.
My question is , can I connect any solar panel to my Inverter? Will sukam falcon plus has any restriction on that?
- Srinivasan Govindarajan asked 4 years ago
i would like to have a solar setup by which i can use lights and fans during the day time directly and which can give 3 to 4 hours backup after sun set is this facility available?
- minhaj rasheed asked 9 years ago
- last active 9 years ago
There are many kinds of solar energy,which one is most useful.What’s the different of the Solar Panels, Mounting System and Inverter.
Anyone’s can tell about it?????
- lee alice asked 8 years ago
- last active 8 years ago
All our partners are interested in 1mw solar power plant but we want to know the installation cost and how n who will purchase the power
- Vipin Agrawal asked 6 years ago
Hi i am very eager in solar technology i want to do internship or related training regarding the technology ? Can you please provide the relevant details
- Chaitanya Nadimpalli asked 6 years ago
- last active 5 years ago
I am looking for solar equipment which can help me have two lights and one pump (for garden fountain) each 12V and DC driven with independent on-off switches. Of course, provision for a ceiling fan will also be helpful.
- Ravi asked 9 years ago
- last active 7 years ago
DEAR ALL
MY QUERIES ARE AS BELOW
1- CAN WE RUN A SOLAR SYSTEM WITHOUT BATTERY BANK FOR ONLY DAY USE WHERE THERE IS NO GRID CONNECTIVITY AND NO DG.
2- CAN WE DESIGN A SOLAR SYSTEM WITH MINIMUM BATTERY BANK, SO THAT WE MAY USE AS WELL CHARGE BATTERIES TOGETHER IN DAY TIME, AND KEEP BATTERIES FOR MINIMUM LOAD AT NIGHT.
3- IS THERE ANY LIMITATION AS FAR AS VOLTAGE AND CURRENT IS CONCORN ON HOW MANY PANELS CAN BE CONNECTED IN SERIES OR PARALLEL
- puneet agarwal asked 9 years ago
- last active 8 years ago
My current solar system for home:
1. 12V 100W polycrystalline Solar Panel.
2. 12V 75Ah Lead Acid solar tubular Battery.
3. PWM 12V 10A Solar Charge Controller.
4. 12V Input and 200VA Output Inverter.
Current Problem:
Battery not getting charged fully daily because solar panel is getting around 3-4hours sunlight and that too includes sunlight at non-90 degree conditions.
So, I want to add an additional solar panel[preferably 200W or more] which will get 90 degree sunlight from 1pm to 5pm. Also, we get around 50 minutes of on grid supply. During this time inverter charges the battery too.
My questions as per my whole day research:
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If I add a 24V 200+W solar panel, I have to connect the panels in series because
parallel means same voltage but ampere gets added.
series means same ampere but voltage gets added.
In this cases what changes are needed to charge the 12V battery?
I guess someone will suggest MPPT controller. What is the best controller available in India? budget max6000INR -
To avoid huge costs and hastle for the above requirement if I go with 12V 150W panel, then I will just need to connect my 12V 10A with a new 12V 20A controller in parallel to draw 8.6+12.5A=22A approx. current from solar panels.Am I correct here?
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During a hot and shiny summer how much watts does a 100W panel produce in 90 degree sun conditions? What is the worst output that I will get in rainy season?
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While charging battery from the inverter during grid supply, I see the inverter shows around 6A-9A current supply to the battery. Is it the current only that counts how fast the battery goings to be charged. Does change in voltage play any role?
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I want to pull as much current as possible from grid and put it to my battery during that 50min time. What device will let me do so? Logically to charge a 12V 75Ah battery from 0-100 we will need something that putts 900W of power into the battery in an hour.
900/12=70A approx. How much Ampere is safe for longetivity of battery?
P.S: In any circumstances safety and device efficiency is my priority.Please excuse any non-sensical thing if I mentioned above.
- Rajesh Nayak asked 4 years ago
- last active 4 years ago