Shared self-consumption is a renewable energy installation in which more than one end consumer takes part. In these installations, the energy produced is shared out among all the participants, in accordance with the participation percentage assigned to each one. In this way, savings are made on the electricity bill and it helps to reduce the carbon footprint of households.

In this case you must contact the IBE (autoconsumcompartit@ibenergia.caib.es) to study your case.

Shared self-consumption under the surplus compensation scheme, which is the usual operating regime of the photovoltaic installations managed by the Balearic Energy Institute, is limited to 100 kW of power and at present the distribution company does not take into account the sharing coefficient of each user but rather the nominal power of each self-consumption installation. Therefore, if you wish to join a shared self-consumption scheme with a nominal power of 100 kWn and you already have one individually, the distribution company will add both nominal powers together, exceeding 100 kW, and this will affect the conditions of the IBE’s shared self-consumption.

Yes, the only essential requirement in order to apply is to hold an electricity supply contract. You do not need to own the dwelling for which you are applying for self-consumption.

Small and medium-sized enterprises, small shops and self-employed workers, provided that they have premises where commercial activities involving customer service or service to the public are carried out.

The situation of vulnerability can be accredited by means of the following documentation:

• A certificate from the Social Services department concerned.
• Proof of being a recipient of the guaranteed social income (RESOGA) or of the minimum living income (IMV).
• Proof of being a recipient of the electricity social voucher (it is usually shown on the electricity bill).

The energy generated is divided, following the sharing agreement, among the participants of the installation. For example: if you contract 1 kW of a 100 kW installation, you are entitled to 1% of the energy produced by the panels.

It is the proportional share (as a fraction of one) of the energy generated that corresponds to you on the basis of the contracted power and the power of the installation. For example, if you contract 1 kW of a 100 kW installation, you are entitled to a β^* of 0.01 (which comes from dividing 1 kW by 100 kW).

The sharing agreement in a shared self-consumption model is an agreement signed by all the participants of the aforementioned self-consumption scheme which specifies the agreed sharing coefficients, calculated according to the contracted power and the power of the installation.

Surplus compensation means that the energy you have not consumed (out of the total corresponding to you) is financially compensated within that month’s electricity bill, in accordance with the tariffs set in your electricity contract with your retailer.

In other words, for each kWh of energy fed into the grid, the energy you have consumed during that hour is deducted. If the energy consumed is lower than the proportional share corresponding to you, the difference is your surplus energy.

We do not recommend it, as the power term corresponds to the capacity reserved for your dwelling; that is, the maximum consumption that can be made at any given moment.

For example, if you have contracted a power of 4 kW, this means that you can have a maximum consumption of 4 kWh without an overload occurring. Therefore, bearing in mind that during the night hours or in adverse weather conditions the panels do not produce, it is preferable not to change the power term of the electricity supply contract.

If you have a regulated market contract, its conditions will not change, you only have to activate the contract scheme and switch to a self-consumption scheme with surplus compensation. If you have a free market contract, you must review the conditions with your retailer.

Over the course of the year there are approximately 2,800 hours of sunshine. Taking into account variations in intensity (clouds, sunrise, sunset, etc.), this value is close to 1,500 equivalent hours of sunshine; that is, hours in which the installation will be generating at its maximum capacity.

Based on these 1,500 hours and a participation power of 1 kW, your participation will be 1,500 kWh/year. Assuming an average price of 0.20 €/kWh, an estimated annual saving of around 300 euros would be obtained (always bearing in mind that all the energy generated can be consumed within the solar production window). The saving depends on each particular case and on the contracting conditions.

In short: if you contract 1 kW, the first kWh of consumption during the production hours of the installation will be consumed from the panels and, therefore, will not be reflected in the electricity bill. If during that hour the consumption is higher than the share of generation corresponding to you, there will be no surplus energy, and the kWh of consumption exceeding that share will be charged at the usual price according to the contracted tariff.

The sharing agreement is renewed annually and may be extended for up to 4 years. Once it is detected that there are assignable free kW, a new call is opened. In this new call, priority is given to citizens and SMEs on the waiting list who were unable to take part in the previous call, and subsequently those who have applied to join this waiting list after the call has closed are attended to. You can apply to join this waiting list by writing to the email address autoconsumcompartit@ibenergia.caib.es and we will keep you informed about the opening of the calls and their status.

In principle, the IBE awards 1 kW for households and up to 3 kW for SMEs, as indicated in the call. If there are assignable kW left over, an increase in the assigned power is proposed to the interested parties. The consumption curve is always reviewed beforehand in order to verify that this increase is appropriate.

The saving is shown on the electricity bill in three different ways: self-consumed energy, surplus energy and a reduction in taxes.

The saving from self-consumed energy is reflected on the bill by means of an adjustment between the meter readings and the self-consumed energy. In this sense, self-consumed energy is that consumed while the installation is operating (solar hours). If the energy produced is not self-consumed, it is fed into the grid as surplus energy, which is compensated according to the price stipulated in your electricity tariff.

In addition, there is a saving on electricity generation taxes, VAT and the fees for tolls and charges (if they are not included in the energy price of your tariff) due to the reduction of energy consumed from the grid.

If you wish, the offices for Energy Transition can prepare a one-off monthly report to assess your saving and detect possible deficiencies. You must send a bill to the email address info@oficinesnenergia.cat and indicate which installation you are attached to.