Let the sun be your energy

A new energy model is possible. Feníe Energía
promotes new types of energy production and consumption

Benefit from the advantages of self-consumption!

Produce your
own energy

Collaborate for a
more sustainable world

Project an
innovative image

Increase the value of
your business or home

Save day by day with Fenie Energy producing your own energy, we offer you…


Study and design
of the installation

Discover all
the possibilities
for financing
the installation


We take care of everything

Are you still thinking about it?
Join the self-consumption

This is how self-consumption works

The process is very simple and easy to understand

  • Solar energy is captured through solar modules
  • Then the investor manages:

    • The energy that is self-consumed
    • The energy that is self-consumed
    • The energy consumed from the grid


With the energy generated and not consumed, you can get extra savings on your bill

Save day by day with Feníe Energía by producing your own energy. We offer you

Simplified compensation: The easiest way to produce your own energy and benefit from compensating for the energy you do not consume* and deliver to the grid.
*Up to the limit of the economic amount of the energy consumed in that month.

Power sale: If you are a big producer we also have solutions that suit you, more information here

Success stories about self-consumption

Successful Case Studies | 13 Sep, 2019

Cas Gasi autoconsumo eficiente

Categories: autoconsumo, energía renovable, Feníe Energía

Successful Case Studies | 20 Jun, 2018

Autocares Dipesa

Categories: autoconsumo, Successful Case Studies, Feníe Energía

Successful Case Studies | 4 Dic, 2018

¿Cuál es la mejor manera de mostrar los beneficios del autoconsumo?

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Did you know? about Self-consumption

1. What is self-consumption?

Self-consumption consists of using the radiation that comes from the sun to generate electricity, which can be used for any purpose; i.e. the fact of producing our own energy is known as self-consumption. Any equipment or installation that consumes electricity can be supplied by means of a self-consumption installation.

We can classify self-consumption into two groups: individual self-consumption or collective self-consumption, and on the other hand self-consumption with surpluses or self-consumption without surpluses. When we speak of self-consumption, we refer to installations in which there will also be an electrical supply that has been registered or activated, and whose purpose is to complement the energy supply provided by the solar installation at times when the installation produces little due to the decrease in radiation, at night or simply when the demand of energy cannot be covered by the solar installation.

2. What is the difference between individual and collective self-consumption?

We speak of individual self-consumption when the installation is used to supply energy to a single consumer or in other words, when there is only one supply point registered and associated with that installation. In the case of several consumers or several supply points linked to a self-consumption installation, we will be talking about “collective self-consumption”. For example, if the members of a community of owners or a residential area in which there are several supplies registered decide to share a solar installation to distribute among them the energy generated, this will be considered a collective self-consumption installation.

3. What is the difference between self-consumption with or without surplus?

The energy that is poured into the grid can be managed in two ways: it can be compensated in the supply bill (simplified compensation) or a contract of sale of energy can be made, for which it will be necessary to register as a producer and that energy will be charged at the price determined monthly by the energy pool. Another possibility to manage surpluses is to store the excess energy in batteries in order to have it available when it is needed.

4. What happens to the energy I have left over?

The energy that is poured into the grid can be managed in two ways: it can be compensated in the supply bill (simplified compensation) or a contract of sale of energy can be made, for which it will be necessary to register as a producer and that energy will be charged at the price determined monthly by the energy pool. Another possibility to manage surpluses is to store the excess energy in batteries in order to have it available when it is needed.

5. Can I benefit from the surplus compensation?

A self-consumer can benefit from the surplus compensation when the production installation is less than or equal to 100 kW; if the power is greater than 100 kW, the energy will be sold on the market through a market representation contract signed with the marketer.

6. How will the surpluses be billed?

On the bill, a valuation of the surpluses will be made at a previously established price, which in the case of Feníe Energía is 0.049 euros/kWh. The compensation consists in valuing the surpluses at that price and then subtracting them from the bill. The consumer will continue to pay the fixed part of the bill, that is to say the power term and the taxes, and at most it will be possible to compensate the amount corresponding to the variable part of the bill, i.e. the amount of the kWh consumed. That part cannot be negative, therefore the maximum amount to be compensated will be the one that makes that amount zero. This is a compensation in economic terms rather than in energy terms.

7. What elements comprise a self-consumption installation?

A self-consumption installation consists of several elements:

  1. A) First of all, it includes a generator field, mainly made up of photovoltaic panels. Next to these panels there can be complementary elements aimed at increasing the performance and the generation capacity, such as small wind turbines. The energy produced by this equipment is direct current.
  2. B) Secondly it includes an electronic part, whose objective is to convert the energy generated with the panels in direct current to alternating current, so that it can be consumed in the consumer’s regular grid and also allows us to visualize the energy generated and consumed through a web portal that receives the data from the installation.
  3. C) And thirdly, the structure, mainly made up of metal parts to which the solar panels are attached by means of screws and fixings.

As in all electrical installations, there is wiring and protection for the electrical lines.

8. How much does a self-consumption installation cost?

The price of a self-consumption installation can vary depending on different factors, for example, the type of structure used, the quality of components such as the panels and the solar inverter. The most important aspect when considering a self-consumption installation is not the price, but to carry out a suitable and personalized study taking into account the needs of the consumer and that it allows them to benefit from the generated energy to the maximum and to increase the percentage of savings obtained as much as possible.

9. How much space does a self-consumption installation take up?

The surface occupied by the installation will vary depending on its size. To get an idea, a 1 kW installation would be made up of 2-4 panels depending on their power, and each kW would occupy an area of between 4 and 6.5 m2

10. What procedures do I have to carry out to install self-consumption?

In order to have a self-consumption installation, you must carry out some formalities in order to legalise it and register it with the different organisations. The procedure changes depending on different factors.

  1. A) Installations that do not have a surplus, in other words, that do not have enough energy to pour into the grid, will be processed through a simple procedure.

    1. – To begin with, you must carry out the procedures indicated by the municipal regulations (building permits, prior communication, etc.). Once the Town Hall indicates that the procedure is correct, the installation can begin.
    2. – After the installation is completed, the installer must submit a document to the territorial delegation of Industry which details the technical aspects of the solar installation, i.e. an Electrical Installation Certificate will be issued.
    3. – From this point on, the Administration will be in charge of sending the information to the Registry of Production Installations and to the Distributor.
    4. – The customer must notify the corresponding marketer that they have contracted a self-consumption installation.
  2. B) Installations with surpluses can choose between two modalities: either requesting compensation for surpluses in the bill or signing a contract of sale of energy to receive an economic consideration for it. Only if the installation is over 15 kW for this mode of self-consumption, the processing will change with respect to what was explained in the previous case.

    1. -It will be necessary to request permission from the Distributor so that it reports on how the installation will be connected and if any additional work needs to be carried out to reinforce the grid.
    2. – Only when the installation has more than 25 kW it will have to pass an inspection by a Control Body
    3. – In addition, the consumer must inform the Marketer if they want to benefit from the compensation of surpluses or if they prefer to sell the energy to the market and carry out the contract indicated by the Marketer.
11. Will I save money if I install self-consumption?

ALWAYS, but it is necessary to carry out a study of the real needs of the consumer so that the installation is correctly dimensioned, and the energy generated can be exploited as much as possible. This will also allow for the greatest possible savings. The savings will vary depending on several factors such as the client’s consumption pattern; centralising the largest possible amount of energy consumed from the photovoltaic system at the hours when it produces the most is a guarantee of great use of the solar installation and therefore ensures a high percentage of savings.

12. What are the benefits of self-consumption for the environment?

When we talk about self-consumption, we only think of advantages. With regard to the environment, the use of solar generation avoids the emission of CO2 into the atmosphere. It is very common to talk about tons of non-emitted CO2, but making a reliable balance is complicated, since it depends on the energy source that is being replaced; in general terms we can talk about 0.38 kg of CO2 for each kWh generated with renewable sources. From an economic point of view, a distinction should be made between the type of consumer who decides to self-consume the energy generated by their solar installation. If we refer to a domestic consumer, the economic impact on their bill is important; we can talk about 20% savings in the bill. In other consumers it is important not only to value the monetary savings, but also the social impact of self-consumption. At a business level, not only is the saving obtained on the bill important; the impact on the company’s image as a technological innovator must be valued, as well as the fact that it is capable of managing the production of its products with renewable energy sources. We can talk about savings of up to 50% in energy consumption, which allows to gain competitiveness by reducing production costs.