Portuguese PV GRID Bilateral meetings - May 2014

APESF has conducted bilateral interviews with three major working groups: DSOs; universities and laboratories.

On behalf of the DSO, Mr. Ricardo Prata has provided APESF with the evaluation that his working group had discussed on our questionnaire. As for the universities, Mr. Luís Seca form INESCTEC, Tenologia e Ciência – Laboratório (technology and science – laboratory) has provided APESF with some outcomes from their studies. LNEG - Laboratório Nacional de Energia e Geologia, I.P., (national laboratory for Energy and Geology studies), represented by Mr. António Joyce, head of the department, has provided APESF their evaluation on the barriers under scope.

Since there is no legal framework in Portugal that enables a real and effective production of PV energy on a self-consumption basis, the majority of the barriers referred to in the advisory paper do not find a proper answer in the Portuguese case.

EDP considers that the project describes several solutions, which enable the injection of PV in the grid and agrees with the mentioned solutions. These must be implemented bearing in mind a technical-economical evaluation which validates them, not only on the technical level, but also in respect to economic indicators associated to the necessary investments.

EDP has been checking the issue of interconnection of production with its grids. This study, which contributes to the knowledge on the impacts of PV grid integration, meets EDP’s studies.

According to INESCPorto, the project identifies the main technical solutions to increase the capacity to facilitate the distribution of Energy in the distribution grid.

Nevertheless, some of the solutions, although presented apart from each other, may be used together in order to increase their effect. In this context, should the definition of «Wide area voltage control» equal a solution which makes use all eligible technologies, it would make more sense to identify this measure as «high efficiency» one.

The recommendations are useful and address the main existing barriers and limitations to a full integration of the distributed production in the grid. Yet, the recommendations are based upon different business models which cannot be clearly identified, such as non-compatible alternatives based upon an environment of an energy market, subject to the decision of the DSOs. The chosen scenario will influence the measures to be adopted.

The three working groups that have contributed to the study in Portugal, find that the questions pointed out in the advisory paper address the main issues concerning the injection of PV in the grid, and agree that the solutions match the barriers in question. Some of the barriers  are being studied in Portugal already, either by DSOs or universities, which aim at preparing the field in Portugal when self- consumption becomes a reality.


Moreover, the participants in the advisory paper, find that the PV GRID document has revealed itself as a relevant study to ground and further explore the barriers.