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FAQs

Photovoltaic systems

Do solar systems use batteries?

Systems interconnected to the network do not require batteries. Only systems that are isolated from the network require them.

If the power goes out, can I continue operating the solar system?

In the case of simple interconnected systems, it is not possible for the protection of the system and the safety of workers who repair the network; however, hybrid systems can continue to operate since they have backup batteries and have means of disconnection from the network.

Is the exempt generation limit 500 kW?

Solar systems have two characteristic powers: the peak power, which is the sum of the power of the photovoltaic modules, and the net power, that is the interconnected power to the grid measured at the output of the inverters. The net power is the one that by law is limited to 500 kW.

Why should I change my meter?

When using photovoltaic systems interconnected to the grid, it is necessary to change the meter to a bidirectional one in order to measure the energy consumed, as well as the energy that is delivered to the grid when the solar system generates surpluses.

Is it legal to install solar panels on my roof?

Yes, this according to the Law of the Electric Industry.

Can I sell the energy to CFE?

Yes, there is a compensation scheme called Net Sell through which it is possible to sell the energy to a supplier, such as the CFE.

Solar heating systems

What is a solar heater?

It’s a device that allows the use of solar energy to convert it into heat and, through it, raise the temperature of some fluid, which can be water, oil, antifreeze or another.

What are the benefits of installing a solar heating system?

Solar heating systems are an excellent option to increase the profitability of your business and provide independence from gas suppliers, control over energy consumption and environmental commitment.
They help dramatically lower gas bill costs, CO2 emissions and operating costs related to water heating

 

Do I have hot water during cloudy days or at nights?

Yes, although the amount of hot water available depends on the capacity of the hot water storage tank, solar heating systems are prepared to store the absorbed heat during hours when there is good solar radiation and be able to use it at night or in cloudy days.

How much can I save with a solar heating system?

Solar heating systems can help reduce your gas bill by up to 85%, only when there are ideal conditions in the place for their installation and operation.

What is the useful lifetime of a solar heater?

Certified solar heaters offer minimum warranties for manufacturing defects for 10 years, however with good maintenance practices it is possible to extend their useful life up to 15 or 20 years.

What temperatures does a solar heating system reach?

Depending on the type of solar heaters installed and the configuration of the system, temperatures in the range of 50 °C or 60 °C can be reached, however there is the possibility of installing special equipment capable of reaching temperatures from 80 °C to 150 °C.

Does a solar heating system replace a conventional heater?

Having a conventional heater as a backup can be optional depending on the climatic conditions of the area, if it is warm you can prescind from a conventional heater, on the other hand, for cold areas it is recommended to have a backup system to avoid lacking hot water during prolonged periods cloudy or rainy days.

How can I use my solar heating system?

With a system of this type you can heat water for domestic use in showers or laundry rooms, it is also possible to use it in industries or businesses to heat water for hotels, hospitals, restaurants, laundries, industrial processes and for swimming pools, among many other uses.

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