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SOL-29

Numbers on the table before the owners vote

Before the owners vote on a works order worth thousands, we put the numbers down: how much energy can be shared, how to split it, which filings it needs and how much each scenario could save.

  • Chartered, licensed engineers
  • Published price, VAT included
  • Our turnaround and the authority's, kept apart

Upfront assessment

€490

VAT included

€490 credited back if you book a €2,490-or-more service within 90 days

Resolution work, from €2,490

Get the numbers before the meetingCall +34 611 99 36 13

Shared solar lets several neighbours draw from one solar installation and split its output through allocation coefficients they agree between themselves. At Captia Energy the feasibility study costs €490 with VAT included, full permitting starts at €1,490 and later changes from €149. We file and follow the case; the authority signs the decision.

These service records were last reviewed against the law on .

What is shared solar and who decides to install it?

It is not one individual installation multiplied by the number of neighbours. It is a single installation associated with several supply points, with its own rules on proximity and mode, and with a split the building agrees and that is communicated to the grid operator. The owners meeting decides; we supply the numbers, the documents and the filings.

How much does each step cost?

Five services, each with a published price. The amounts include VAT. Any fees the authorities charge, where the procedure requires them, are separate and passed on at their exact amount: they are not our revenue.

Shared solar service prices, VAT included
ServiceWhen it is neededPriceOur turnaround
Shared solar feasibility studySOL-29A neighbour has proposed solar at the owners meeting and someone has to bring numbers to the next one.€490VAT included14 working days
Shared solar permits and engineeringSOL-30The owners meeting has approved the installation and it has to be set up.from €1,490VAT included25 working days
Shared solar manager: registration and setupSOL-31The group is already legalised and the first participant changes start coming in.€299VAT included8 working days
Adding or removing a neighbour from shared solarSOL-32A participant sells or rents out their home.from €149VAT included4 working days
Changing the group's allocation coefficientsSOL-33Participants have joined or left and the split stayed as it was.from €249VAT included8 working days
Public feesWhere the procedure requires themPassed on at their exact amountSet by the authority

€490 credited back if you book a €2,490-or-more service within 90 days. Resolution work, from €2,490.

How do you know whether it pays off for the building?

Before the owners vote on a works order worth thousands, we put the numbers down: how much energy can be shared, how to split it, which filings it needs and how much each scenario could save.

Upfront assessment

€490

VAT included

€490 credited back if you book a €2,490-or-more service within 90 days

Resolution work, from €2,490

Considered delivered when: The feasibility report with the allocation scenarios is delivered and the results meeting is held.

What is included

  • Preliminary technical review of the roof and of the consumption data you provide.
  • Recommended capacity and estimated output.
  • Allocation scenarios between participants, with what each one saves under each scenario.
  • Map of the filings: what to submit, to whom, and in what order.
  • Economic estimate of the investment and of the payback.
  • A results meeting, built so you can take the findings to the owners meeting.

One round of revisions included

What is not included

  • The detailed design project.
  • The building's binding legal agreement and its legal drafting.
  • The installation itself.
  • The grid access and connection application.
  • The structural survey of the roof.

Who prepares and files the paperwork for the group?

We coordinate the technical and administrative side of shared solar so the project does not stall between neighbours, grid operator, documents and allocation coefficients.

Price from

from €1,490

VAT included

What it depends on

  • Whether the base engineering already exists (1,490 €) or has to be produced (from 2,490 €).
  • Number of participating supply points: the standard tier covers roughly up to ten.
  • Capacity and configuration of the installation.
  • Whether grid access and connection, an authorised inspection or extra engineering are needed (from 3,900 €).
  • Number of participant changes after the list is frozen, which are billed separately.

Considered delivered when: The complete file is submitted to the authority and the allocation coefficients are communicated to the grid operator.

What is included

  • Administrative engineering for the group.
  • Technical documentation for the scope contracted.
  • Preparation of the agreement and of the allocation coefficient file within the technical scope.
  • Standard regional filing of the application.
  • Document coordination with every participant.
  • Follow-up until the file is complete and replies to formal requests for correction.

Two rounds of revisions included

What is not included

  • The physical installation.
  • Grid access and connection permits where they apply and have not been contracted.
  • Inspection by an authorised inspection body.
  • Legal advice on the building's statutes or on disputes between neighbours.
  • Meters and metering equipment.
  • Work carried out by the grid operator.

Who can file the changes once it is running?

We set up the role that will handle changes to the shared installation, so adding or removing participants does not mean rebuilding the whole arrangement from scratch.

Fixed price

€299

VAT included

Considered delivered when: The manager registration is filed with all authorisations and the master record of the group is set up.

What is included

  • Preparation and registration of the manager role under the procedure in force.
  • Collection of the standard authorisations from the associated consumers.
  • Setup of the master record of the group: supply points, installation code, capacity, mode, coefficients and participants.
  • Verification that the registration has been correctly recorded.

One round of revisions included

What is not included

  • Legal advice.
  • The annual management of the group, contracted separately.
  • Future additions and removals of associated consumers.
  • Changing the allocation coefficients.

Where this service stops

  • Annual management of the group is contracted separately, from 390 € a year with VAT, and is not part of the registration.
  • Additions and removals of consumers after the manager is registered have their own price.
  • Legal advice on statutes or on disputes between neighbours.
  • Changing the allocation coefficients, which is a different service.

How does a neighbour join or leave the group?

When a participant changes, we update the group without turning every neighbour change into a whole new project.

Price from

from €149

VAT included

What it depends on

  • The first supply point in the operation costs 149 €.
  • Each additional supply point within the same operation costs 29 €.
  • If the change forces a recalculation of the allocation coefficients, that service is added separately.
  • If the group has no open file with Captia, the baseline has to be rebuilt first and is quoted.

Considered delivered when: The manager files the change and the updated list of participants is delivered.

What is included

  • Validation of the authorisation of the owner joining or leaving.
  • Update of the list of participants in the group.
  • Check that the allocation still holds after the change.
  • Filing of the change by the authorised manager.
  • Update of the group's file and archive.

One round of revisions included

What is not included

  • Complex changes to the allocation coefficients, which are a different service.
  • Mediation in disputes between neighbours.
  • Any technical change to the installation.
  • Changing the supply contract holder with the electricity retailer.

How is the energy split changed?

If the split no longer reflects how the building actually consumes, we recalculate or validate the coefficients and handle the update.

Price from

from €249

VAT included

What it depends on

  • Handling a change the owners have already agreed on: 249 €.
  • Optimisation with real load-curve modelling, compared scenarios and quantified savings: 590 € to 990 € depending on the number of supply points and complexity.
  • Number of participants in the group.
  • Whether the baseline has to be rebuilt because the file is not held by Captia.

Considered delivered when: The validated coefficients are delivered in the required format and the change is communicated.

What is included

  • Validation of the proposed coefficients and a check that they add up as they must.
  • Preparation of the file or agreement in the required format.
  • Handling the standard communication of the new split.
  • Filing of the change in the group's record.
  • In the optimisation tier: real load-curve modelling, compared scenarios and the estimated saving of each.

One round of revisions included

What is not included

  • Advanced optimisation with extensive hourly simulations beyond the contracted scope: quoted as a study.
  • Negotiation between neighbours and mediation in disagreements.
  • Legal advice.
  • Any technical change to the installation.

How does the feasibility study work, step by step?

Five steps until the owners meeting has the numbers in front of it. The meeting calendar is set by the building.

  1. Step 1Your part

    You send us the supply points, the consumption data and the building details.

    We need: List of supply points, twelve months of consumption and roof details.
  2. Step 2We do this

    We model output and consumption hour by hour and work out the recommended capacity.

    Our turnaround: 5 working days

    Counted from: The day all the consumption data is in.

    We do not promise: A favourable result: it may turn out not to pay off.

  3. Step 3We do this

    We build the allocation scenarios and the map of filings each one requires.

    Our turnaround: 4 working days

    Counted from: The close of the technical modelling.

    We do not promise: That every neighbour will agree with whichever split works out best.

  4. Step 4We do this

    We present the findings in a meeting built so you can defend them to the owners.

    Our turnaround: 5 working days

    Counted from: The delivery of the report.

    We do not promise: Attending the owners meeting, which is not included.

  5. Step 5Your part

    The building votes. The meeting calendar is yours, not ours.

    We need: The notice of meeting and the owners resolution.

And how does the permitting work once the vote is done?

From the owners resolution to checking, neighbour by neighbour, that the split reaches their bill.

  1. Step 1We do this

    We freeze the participant list, the capacity, the mode and the coefficients as the baseline.

    Our turnaround: 3 working days

    Counted from: The signing of the engagement with the tier determined.

    We do not promise: That the list will not change: if it does, it is a change request and is billed.

  2. Step 2We do this

    We prepare the technical and administrative documents for the scope contracted.

    Our turnaround: 15 working days

    Counted from: The baseline being frozen and the design project or technical report delivered.

    We do not promise: Filling in for technical documents that belong to the designer or the installer.

  3. Step 3We do this

    We submit the file and communicate the allocation coefficients.

    Our turnaround: 5 working days

    Counted from: The close of the documents with every authorisation signed.

    We do not promise: A decision date from the authority or from the grid operator.

  4. Step 4Depends on the regional Industry office

    The file enters the regional administration and follows its course.

    The timing is set by the authority. We do not commit to it.

  5. Step 5Depends on your grid operator

    The grid operator applies the coefficients and activates each participant.

    The timing is set by the authority. We do not commit to it.

  6. Step 6We do this

    We check neighbour by neighbour that the split reaches their bill and close the file.

    Our turnaround: 5 working days

    Counted from: The first bill after each participant is activated.

    We do not promise: Fixing a billing error of a neighbour's electricity retailer on our own account.

Which documents are needed?

This is what we need from the building to accept the engagement. Our turnaround starts counting the day the file is complete, not the day it is paid.

  • List of supply points that may take part

    Required

    Without knowing which supplies join, there is no split to calculate.

  • Twelve months of consumption for each supply point, or permission to look it up

    Required

    A correct split is calculated on the real load curve. With a single month's bill the scenario comes out wrong.

  • Building and roof data: area, orientation, obstacles, photos

    Required

    It sets the capacity that fits and the estimated output.

  • Distances between the roof and the participating supplies

    Required

    Collective self-consumption has proximity conditions; without distances we cannot confirm the group is possible.

  • Building data: tax number, managing agent, relevant minutes

    Helpful, not blocking

    It helps anticipate which majority is needed and who can sign what.

  • Final list of participating supply points

    Required

    It is the baseline of the file. Everything submitted is built on top of it.

  • Owners agreement and signed authorisations from each participant

    Required

    Without an authorisation to act, nothing can be filed on a neighbour's behalf, under article 5 of Act 39/2015.

  • Design project or technical report, depending on capacity

    Required

    It sets which technical documents are needed and which price tier the case falls into.

  • Installation code, if one has already been assigned

    Helpful, not blocking

    If it already exists, we skip requesting and verifying it.

  • Agreed allocation coefficients and metering and connection data

    Required

    It is what gets communicated to the grid operator and what decides what each neighbour sees on their bill.

How long does it take? Our work and third parties, kept apart

Our turnaround

25 working days

Counted from: The baseline being frozen and every authorisation and technical document being in.

What this turnaround does not cover

  • A decision date from the regional administration.
  • An activation date from the grid operator.
  • That every neighbour signs their authorisation in time.
  • That the installation is producing: that depends on the installer, not on us.

What depends on third parties

  • Regional Industry office

    Registration of the file and, where applicable, a decision or a request.

    No date commitment on our side.

  • Your grid operator

    Activation of the associated consumers and application of the allocation coefficients.

    No date commitment on our side.

  • Your electricity retailer

    That the split is correctly reflected on each participant's bill.

    No date commitment on our side.

We commit to filing a complete application and following it through. The decision date is set by the authority, not by us, so we do not promise it.

Which authorities are involved and what happens next?

The file is registered by the regional Industry office of the Generalitat. The grid operator activates the associated consumers and applies the allocation coefficients, and each neighbour's electricity retailer is the one that finally reflects them on the bill. We file, follow up and check neighbour by neighbour that the split arrives. What we do not do is promise the date or the outcome of a decision we do not sign.

Our work counts as delivered when

The complete file is submitted to the authority and the allocation coefficients are communicated to the grid operator.

And it does not stop counting as delivered because of

  • The authority's decision being favourable.
  • The grid operator activating the participants within any given period.
  • A neighbour changing their mind and wanting out after the list was frozen.

Our own turnarounds for the rest of the services, from the moment the file is complete: feasibility study 14 working days, manager registration 8, adding or removing a participant 4, change of coefficients 8.

What goes wrong when a shared installation is set up by eye?

  • A works order worth thousands gets voted on the strength of a sales quote nobody has cross-checked.
  • The split is decided by flat size instead of by consumption, and half the neighbours do not save what they expected.
  • The project stalls halfway through when an administrative requirement nobody looked at shows up.
  • The installation produces but the neighbours do not see the split on their bill, because the association of consumers is incomplete.
  • One inconsistent figure between what was told to the grid operator and what was registered blocks the whole file, not one neighbour's.
  • Participant changes pile up unfiled and six months later nobody knows which list is the good one.
  • The split keeps going to someone who no longer lives there and does not reach the person who does.
  • The registered list stops matching reality and every later filing carries the error forward.
  • The new neighbour pays their share of the installation without receiving energy from it.

Which cases fall outside the standard scope?

These are the situations that stop the work and require a quote before going on. They are stated here, not at the end.

  • If the roof needs structural reinforcement, the study stops and a separate structural survey is proposed.
  • If the group exceeds the size or complexity of the standard scenario, an extension is issued before going on.
  • Changes to the participant list after it is frozen are change requests and are billed.
  • If grid access and connection, an authorised inspection or structural reinforcement appear, the case moves up to the complex tier before continuing.
  • If the group is not correctly legalised, that has to be resolved first and this service stops.
  • If the regional procedure changes the requirements for the manager role, the scope is reviewed before continuing.
  • If a participant joining or leaving forces the coefficients to change, the coefficients service applies as well.
  • If no manager is registered, one has to be registered first and this service waits.
  • If the change of split also requires participants to join or leave, that service applies as well.
  • If the required coefficient format changes by law or by procedure, the scope is reviewed before continuing.

Frequently asked questions

What exactly is collective self-consumption?

Several supply points associate with one installation and share the energy it produces, under their own rules on proximity and mode. It is not one individual installation multiplied by the number of neighbours.

Real Decreto 244/2019, de 5 de abril, por el que se regulan las condiciones administrativas, técnicas y económicas del autoconsumo de energía eléctrica, art. 3 y art. 4 (modalidades de autoconsumo y autoconsumo colectivo) · read on

What majority is needed at the owners meeting?

Installing shared renewable-energy systems is agreed at the owners meeting with the majority set by article 17.1 of the Horizontal Property Act. The study tells you what to take to that meeting; it does not convene it and does not vote.

Ley 49/1960, de 21 de julio, sobre propiedad horizontal, art. 17.1 (mayoría para instalar sistemas comunes de aprovechamiento de energías renovables) · read on

What if the study says it does not pay off?

Then we tell you so, and that is where it ends, with the numbers that prove it. Being able to say no at an owners meeting with data in front of you is worth exactly as much as being able to say yes.

Is the 490 € credited if we go ahead with the works?

Yes, in full, if within 90 days you book the permits and engineering for the group from 2,490 €. The window is 90 days because a building needs time to convene a meeting.

Do you need every neighbour's consumption data?

We need twelve months of consumption for the supplies that will take part, or their permission to look it up. With a single month's bill the split comes out miscalculated and the estimated saving does not resemble the real one.

Why does it cost more than legalising an ordinary installation?

Because it is not one individual installation multiplied by the number of neighbours. A participant list has to be frozen, each one's authorisation collected, allocation coefficients agreed and communicated, and then checked to make sure the split reaches every bill.

Real Decreto 244/2019, de 5 de abril, por el que se regulan las condiciones administrativas, técnicas y económicas del autoconsumo de energía eléctrica, art. 3 y art. 4 (modalidades de autoconsumo y autoconsumo colectivo) · read on

What if a neighbour backs out halfway through?

The list is frozen in writing at the start. A later change is a change request and is quoted: we do not rebuild a file that was already built on a different list at no charge.

Does it include the technical project?

It depends on the tier. The 1,490 € tier is for cases where the base engineering already exists. From 2,490 € it includes the standard engineering for the group. Cases with grid access and connection, an authorised inspection or higher capacity start at 3,900 €.

Is the 299 € a subscription?

No. It is the registration and setup, paid once. Annual management of the group is contracted separately from 390 € a year, and before you sign up for it you will see in writing how many additions, removals and changes it covers.

Is the manager you or someone from the building?

It can be either: the building decides. We prepare the registration, collect the authorisations and set up the record, whoever is named.

What if we want to stop working with you?

The annual fee is announced by email fifteen days before it renews and can be cancelled in one click. The master record belongs to the building and is handed over complete.

Can I submit two additions at once?

Yes, and it works out better. The first supply point in the operation is 149 € and each additional supply point within the same operation is 29 €.

Do the coefficients have to change too?

Often yes, because the split was calculated with a different participant list. We check it while validating the change and tell you before charging, not afterwards. The recalculation has its own price.

When does the new neighbour start receiving energy?

We file the change within four working days of everything being in. When the grid operator applies it and when it shows up on their bill does not depend on us and we do not promise it.

Why are there two such different prices?

Because they are two different jobs. For 249 € we handle a change of split the building has already agreed. For 590 € to 990 € we model your real load curves, compare scenarios and tell you which one saves most, and by how much.

How much more will we save with the new split?

The optimisation report estimates it on your twelve months of load curves. It is an estimate, not a guarantee: if consumption habits change, the result changes with them.

When does the new split take effect?

We communicate it within three working days of the building approving it. When the grid operator applies it and on which bill it appears does not depend on us.

If your case is not a building

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Take numbers to the next owners meeting

The feasibility study costs €490 with VAT included and is delivered within 14 working days of the consumption data being in. It may come out that it pays off, or that it does not: both answers are worth the same when thirty neighbours are asking.

Get the numbers before the meeting

Compare with the rest of the catalogue

Every service and every certificate, with its price including VAT, its pricing mode and third party fees listed separately, grouped by what is happening to the house rather than by what we call them.

See the price of every service and certificate