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FAQ

FAQ

Can a PV system be financed

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Yes. The available financing options depend on the entity.

Financing products for individuals and home owners are slowly being developed. LessWatts can assist our customer with financing options in this space.

For corporate, there are more options based on the individual requirements. Contact LessWatts for financing options.

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Is there a limit to the size of a PV system

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The only limiting factor to a PV system is cost. The bigger and more advanced the system, the more money it will cost. This goes for both the generation capacity and battery capacity.

Modern PV systems have the capability to connect to the major grid suppliers at the voltage prescribed by the grid operator and the intended us of the PV system.

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What happens with a grid connected system when the grid power supply fails?

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Grid Tie systems will stop the production of electricity. This is due to the fact that most safety standards require the system to disconnect from the utility grid in the event of a grid failure. More importantly, in most grid tie systems, the PV system is meant to augment the power supply of the consumer which means that the PV system capacity is insufficient to power the consumer loads. This is further complicated be previously mentioned factors which influences the production of a PV system.

Hybrid systems can maintain the production of power provided the secondary generator can maintain the base load in the system. When a battery system is combined with such a system, part of the energy will be supplied from the batteries depending on the PV generation capacity.

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How does a Grid Tie System differ from a Hybrid System?

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A grid tie system refers to a system which ties the solar panel DC generation system directly to the utility grid. In this system there are no batteries to store the electricity in. The electricity generated is fed into the connected grid and used wherever it is consumed. If the electricity produced by such a system is not consumed on the premises where it is installed, it will be fed into the utility grid unless otherwise controlled.

A hybrid system refers to a system which combines the power from a solar power system with another electricity generator, such as a diesel generator. In most hybrid systems which contain diesel generators, PV power is prioritised on the grid with the diesel generator used to continuously fill the gap between the present load and the actual generated power from the PV system.

Battery storage can be included in a hybrid solution to be able to manage the power balance in the system through augmentation of generator system limitations.

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Can I connect my PV system to the existing utility grid

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Yes. Although not all PV equipment is built to be connected to the utility grid. Using the right components, the system can be connected to the utility grid in two ways:

  1. Through the use of a Grid Tie systems
  2. Through the use of a hybrid system.

Of-grid systems are used where there is no utility electricity connection.

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What about the possibility of breakage

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Although solar panels contain glass, the construction is extremely durable with it designed to withstand impacts from hail and high wind loads. The specified thresholds are determined through stringent standards in most countries.

Under extremely strong force, any solar panel will break.

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Do PV systems work in cold conditions

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Like most electronic devices, PV system components perform better in cold weather.  PV systems generates less power during winter months, but this can be attributed to less daylight hours and lower sun angles, not due to temperature.

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Can PV systems produce power on cloudy days?

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Yes. During cloudy weather the amount of sun reaching the solar panels are reduced. On a dark overcast day, the amount may be reduced by as much as 90% with a proportionate decrease in power production.

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How much power can a PV system produce?

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The amount of energy generated by solar panels is dependant on the amount of sun shining on the panels and the angle at which the sun rays reached the solar panels.

In simple terms this means that the seasons, time of day and weather has an impact on the amount of energy produced by solar panels.

Furthermore, the number of solar cells determines the total amount of energy available in the system.

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Does a PV system produce power all the time?

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No. PV systems can only produce power when the sun shines on the solar panels.

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