A Trans-Disciplinary Vocabulary for Assessing the Visual Performance of BIPV

It is widely acknowledged that the visual dimension of photovoltaics (PV) is fundamental for social acceptance. In this sense, the so-called Building Integrated Photovoltaics (BIPV) is a possible catalyzer, as PV is hidden (integrated) into building envelope morphologies that are familiar to the public. It is crucial to be able to design and assess a BIPV system so that its visual performance is optimal. Many studies exist in this regard, but still they do not deliver a clear theoretical organization of the concepts used for defining the visual performance of BIPV. This paper elaborates a trans-disciplinary systemic formalization of BIPV and proposes a vocabulary focusing on the formal perception of BIPV as a part of the building’s envelope system. The proposed vocabulary is based on a set of 11 visual keywords; as the proposed method unifies the formal and the cognitive information contents. It will facilitate the dialogue among different stakeholders (e.g., architects, clients, modules manufacturers, and public authorities) and, in general, the visual performance assessment of BIPV. In consequence, it allows for objective comparison and thus informed decision-making.