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Freequently Asked Questions

General FAQ

No, though the output will reduce accordingly. Solar panels do work in the shade, on cloudy days or when there isn’t direct sunlight – just at less capacity.

Typically, solar panels go with two warranties: a performance and product guarantee (25 and 10 years respectively). However, some manufacturers may provide extended warranties as well.

The average life expectancy of solar panels is 25-30 years. However, this doesn't mean they won’t produce electricity after that. They will, but at slightly reduced output.

For professional installers, it normally takes from one to three days to install a rooftop residential solar PV system.

The answer is definitely ‘Yes’. A typical solar panel payback period is estimated to be 12.5 years, but it can vary depending on which state you're in.

To get the most out of your solar panels, make your solar panels face true south if you live in the northern hemisphere, and true north if you live in the southern. This will ensure your solar panels receive direct light throughout the day.

On average, you’ll need 28-34 solar panels to cover 100% of your energy needs. To get a more precise number, use our Solar System Calculator.

Solar PV system cost depends on various factors, ranging from $11,000 to $14,000 after solar tax credits.

Yes, installing solar panels in a home can potentially increase its value by up to 4.1%.

Do I need to worry about solar panels in the snow?

The sky is the limit. To calculate precise power output, you’ll need the following equation: panel wattage x number of sunlight hours x number of panels. For example, a system of 10 290W panels in California with 5 hours of direct sunlight would generate about 14.5 kW a day.

Prices & Shipment


Solar PV system cost depends on various factors, ranging from $11,000 to $14,000 after solar tax credits.


Normally it takes us 48 hrs to prepare your order for shipping. Depending on the delivery address, it takes 2-7 business days to deliver it.


Yes. A1 Solarstore can ship your order almost anywhere (Panama, Mexico, Brazil, Costa Rica, Uruguay etc. including all islands of Caribbean Sea).

After placing an order, please, provide us with your preferred Freight forwarder information.

If you do not have one, we can assist with the import and export of your goods, from initial quote and document preparation to tracking and delivery to the final destination. Our trusted freight forwarding partners offer a flexible array of the international shipping options, including door-to-door service to many major cities worldwide or standard door-to-airport or door-to-port service to almost any international destinations.

All prices on our site are in US dollars. For international shipping, we only accept bank wire or cryptocurrency payments.

When ordering outside of the United States of America, the recipient is responsible for assuring the product can be legally imported to the destination country.

The recipient is the importer of record and must comply with all the laws and regulations of the destination country. The recipient of an international shipment may be subject to import taxes, customs duties and fees, which are imposed once a shipment reaches the recipient's country. Additional charges for customs clearance must be fulfilled by the recipient.

Customs, duties, and taxes are non-refundable. If a shipment is being refused because of the unexpected import fees, the cost of the original shipping and any additional return shipping charges will not be refunded. Customs policies vary widely from country to country; you should contact your local customs office for more information. When customs clearance procedures are required, it can cause delays beyond our original delivery estimates.

If you have any questions regarding your international order, please email us.


Yes, you can return the panel. For more information, please, see our return policy. Note that shipping charges are non-refundable.

Solar system installation

All panels are essentially the same with some variations in power output. The dimensions of the panel normally correlate with the power output of the panel. The right questions would be how much power is required and if there is enough room to mount it. The only panel that is designed specifically for rooftops is Solaria AC module, as it will only work in a grid tight system.

It depends on how much energy you are planning to generate. As a rule of thumb, every square foot of roof space can potentially generate about 15 watts of solar energy. So, you’ll need at least 100 ft² for a smaller system and more than 1,000 ft² for a larger one.

To get the most out of your solar panels, make your solar panels face true south if you live in the northern hemisphere, and true north if you live in the southern. This will ensure your solar panels receive direct light throughout the day.

No, though the output will reduce accordingly. Solar panels do work in the shade, on cloudy days or when there isn’t direct sunlight – just at less capacity.

Panel power production depends on how much sun it’s getting. Yes, it will produce power on a cloudy day. But its amount depends on how much sun is getting through the clouds.

Yes, solar panels perform very well in cold climates.

No, most of them are designed to withstand heavy snow loads.


You will need to check if you have areas with direct sunlight and if it is possible to install panels in those areas. With the help of microinverters and power optimizers, a solar system can still be very efficient under such shading conditions.


For professional installers, it normally takes from one to three days to install a rooftop residential solar PV system.

Solar system design

On average, you’ll need 28-34 solar panels to cover 100% of your energy needs. To get a more precise number, use our Solar System Calculator.

Normally solar panels produce power for over 25 years, so it would be logical to invest in a good inverter with quality warranty. We recommend Solaredge, SMA, Fronus, Outback, Enphase and Schneider brands inverters.

The sky's the limit. To calculate precise power output, you’ll need the following equation: panel wattage x number of sunlight hours x number of panels. For example, a system of 10 290W panels in California with 5 hours of direct sunlight would generate about 14.5 kW a day.

Yes, it does. Generally, panel power production degrades about 1% per year.

Is going solar worth it?

The average life expectancy of solar panels is 25-30 years. However, this doesn't mean they won’t produce electricity after that. They will, but at slightly reduced output.

At current prices, any solar power system usually pays off within 5-6 years. Or faster, if a zombie apocalypse begins :)

The answer is definitely ‘Yes’. A typical solar panel payback period is estimated to be 12.5 years, but it can vary depending on which state you're in.

Typically, solar panels go with two warranties: a performance and product guarantee (25 and 10 years respectively). However, some manufacturers may provide extended warranties as well.

Yes, installing solar panels in a home can potentially increase its value by up to 4.1%.