Stand-alone  (off-grid ) photovoltaic power systems

It all began in 1839, when French physicist Edmond Becquerel (father of Nobel leaureate Antoine Henri, the person that discovered radioactivity) was the first person to discover the photovoltaic effect. That is the immediate conversion of solar energy into electricity, using photovoltaic cells (or else known as solar cells).

Almost 177 years later, progress in the field has made stand-alone photovoltaic systems the first option when it comes to power supply for buildings and other facilities. That is mainly because the production of solar power (photovoltaics) is an off-the-grid electricity system that offers energy autonomy. A photovoltaic system can operate in combination with another renewable energy source (i.e. wind turbine) or conventional (i.e. power generator) and is called a hybrid energy system.

This type of systems can store excess energy via accumulators (batteries), so that power can be used even when there is no sunlight (night-time, cloudy weather)

The size of a stand-alone photovoltaic power system depends on the electrical load needed and the level of autonomy desired.

Stand-alone photovoltaic power systems are the ideal option for permanent and summer residences (caravans, vacation homes), small businesses, boats, hotels, agricultural purposes (solar pumps for irrigation systems, greenhouses) or for tourism businesses (camps, rental rooms). Moreover, autonomous power systems are the best alternative (in case of a power outage) in order to ensure autonomy when it comes to important electrical appliances (refrigerator, lights, TV, internet connection, alarm, medical equipment etc.).


A complete stand-alone system consists of:

– Photovoltaic panels

– Charge controller

– Inverter

– Batteries

A thorough examination is required

One of the vital points before the installation of a stand-alone photovoltaic system is the examination that ensures the safety and the functionality of the system. The quality of the products used is a key factor for the overall quality of the system and the main reason why two systems may have a different pricing (two batteries with the same capacity and current may differ, for example, in their cycle lives).

Our many years of experience in the field of stand-alone photovoltaic power systems, in combination with our specialized scientific and technical staff guarantee the optimal selection of the autonomous power supply system that will cover your needs at the best possible price.

Why should you choose a photovoltaic power system?


Falling prices of the photovoltaic panels in combination with the increased power supply costs and the additional charges, including the connection to the Public Power Corporation network, guarantee the viability and the efficiency of the investment. The benefit increases even more in cases where the set is located far from the public network, as the connection costs are more expensive.


Renewable Energy Sources have become number one option when it comes to the selection of a power source and are also imposed by a European Union legislation on the protection of the environment.


Modern stand-alone photovoltaic systems differ widely from those used over the past decades. In ECO//SUN we can guarantee you the best results, without any unexpected power outages or technical issues, as our specialized staff will thoroughly examine and evaluate your case and properly install the highest-quality products.


Choosing a company with the experience and expertise of ECO//SUN guarantees the safest possible photovoltaic system as far as the operation and the protection of the users is concerned (outages, DC and AC fuses, relays that protect from electric shocks etc.) in case of a possible error or emergency event.


A stand-alone photovoltaic system is completely noiseless and cannot be compared to the noisy liquid fuel generators that do not match theserenity people are looking for when visiting their country houses, in order to enjoy the calmness and peace of the magnificent Greek landscapes.


A stand-alone photovoltaic system can be relocated and installed on another building or be extended at any time, being an investment that will never go in vain.


Low-cost maintenance

Maintenance of a high-quality ECO//SUN photovoltaic system is low-cost and cannot be compared to the frequency and cost of maintenance of a liquid fuel generator.


Can be installed everywhere

A stand-alone photovoltaic system can be installed at any location and on any building, in contrast to the connection to the public power network that can either not be achieved or is high-priced for remote areas.

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