{"id":184056,"date":"2026-09-02T09:00:01","date_gmt":"2026-09-02T07:00:01","guid":{"rendered":"https:\/\/peimar.com\/?post_type=pubblicazione&p=184056"},"modified":"2026-09-02T12:34:27","modified_gmt":"2026-09-02T10:34:27","slug":"same-power-different-modules-what-determines-the-actual-quality-of-a-photovoltaic-module","status":"publish","type":"pubblicazione","link":"https:\/\/peimar.com\/ae-en\/news\/stessa-potenza-moduli-diversi-cosa-determina-la-qualita-effettiva-di-un-modulo-fotovoltaico\/","title":{"rendered":"Same power, different modules: what determines the actual quality of a photovoltaic module?"},"content":{"rendered":"
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Can two modules with the same power rating deliver different performance?<\/strong><\/p>

\u201cCertainly. Nominal power corresponds to the maximum value measured under standard test conditions, but it is only one of the parameters to consider. On its own, it does not indicate how much energy the module will actually produce throughout the day, nor how well it will maintain its performance over the years after exposure to temperature fluctuations, humidity, wind, snow, and hail.\u201d<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Which construction features have the greatest impact on durability?<\/strong><\/p>

\u201cThe mechanical strength of a module depends on the balance of the entire design and cannot be attributed to a single element.\u201d<\/p>

\u201cWhen the module is subjected to mechanical stress, forces are generated and distributed throughout the entire structure. The quality of the materials used\u2014from the glass and frame to the encapsulant and cells\u2014the treatments they undergo, and the way all these elements are integrated therefore become essential.\u201d<\/p>

\u201cIn Peimar\u2019s Made in Italy modules, we use a single 3.2 mm glass layer, while our bifacial modules feature a 2+2 mm dual-glass configuration, which helps increase overall rigidity and limit deflection under load. Glass thickness alone does not determine the robustness of a module: even significantly different construction architectures can provide high mechanical strength when properly designed.\u201d<\/p>

\u201cTempering increases the glass\u2019s resistance to impacts, mechanical loads, and thermal shocks, while the structure of the module and frame helps distribute loads correctly.\u201d<\/p>

\u201cThe quality of the lamination is also essential to protect the cells and preserve their integrity throughout the module\u2019s operating life.\u201d<\/p>

\u201cRobustness is therefore the result of the interaction between materials, treatments, structure, and the quality of the manufacturing process.\u201d<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Can certifications help identify the most durable modules?<\/strong><\/p>

\u201cCertifications demonstrate compliance with the requirements defined by standards through standardized and repeatable tests, designed to be carried out according to common criteria even in different laboratories.\u201d<\/p>

\u201cHowever, this does not mean that all certified modules are equivalent or that passing a specific test guarantees resistance to every environmental condition. It is important to consider which tests are carried out and how suitable they are for the conditions in which the module will operate.\u201d<\/p>

\u201cPeimar modules are certified according to IEC 61215, which covers module design qualification and performance testing, and IEC 61730, which focuses on construction and electrical safety. The range also includes solutions subjected to specific tests for particularly challenging environments, such as those specified by IEC 61701 for salt mist, IEC 60068-2-68 for sand and dust, and IEC 62716 for ammonia, which is often relevant in agrivoltaic and agricultural solar applications.\u201d<\/p>

\u201cCertifications therefore provide a better understanding of the operating conditions for which the module has been designed and tested, but they do not make it possible to rank the products on the market according to their robustness.\u201d<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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How do Peimar modules meet these quality and reliability requirements?<\/strong><\/p>

\u201cAt Peimar, we consider module quality to be the result of a process that must be controlled at every stage. For this reason, we pay particular attention to the selection and traceability of components, the consistency of their characteristics, and the checks carried out during production. The goal is not only to achieve good performance when the module is new, but to maintain it throughout its operating life.\u201d<\/p>

\u201cParticular attention is also paid to PID (Potential Induced Degradation), a phenomenon that can cause a progressive loss of performance under certain voltage, temperature, and humidity conditions. Another important aspect is performance under low-irradiance conditions, which is essential for ensuring good energy production even when sunlight is less intense.\u201d<\/p>

\u201cUltimately, the same wattage does not necessarily mean the same quality, and a higher nominal power does not automatically translate into greater energy production, whether daily, annually, or over the entire lifetime of the system. What also matters is the module\u2019s ability to maintain its performance and reliability over time.\u201d<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Moduli fotovoltaici di marche o modelli differenti, pur avendo la stessa potenza nominale, non possono essere considerati automaticamente equivalenti.
\nOltre alle differenze nelle tensioni e nelle correnti caratteristiche, materiali, struttura e qualit\u00e0 produttiva incidono sulla capacit\u00e0 del modulo di resistere nel tempo alle diverse condizioni ambientali. Certificazioni e severit\u00e0 delle prove permettono invece di comprendere quali requisiti siano stati verificati e in quali condizioni.
\nNe parliamo con Paolo Zucchetto, Sales Area Manager di Peimar, che approfondisce gli elementi da considerare per valutare un modulo oltre il semplice dato di potenza riportato sulla scheda tecnica.<\/p>","protected":false},"featured_media":184070,"template":"","meta":{"_acf_changed":false},"categoria-pubblicazioni":[],"class_list":["post-184056","pubblicazione","type-pubblicazione","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/peimar.com\/ae-en\/wp-json\/wp\/v2\/pubblicazione\/184056","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/peimar.com\/ae-en\/wp-json\/wp\/v2\/pubblicazione"}],"about":[{"href":"https:\/\/peimar.com\/ae-en\/wp-json\/wp\/v2\/types\/pubblicazione"}],"version-history":[{"count":13,"href":"https:\/\/peimar.com\/ae-en\/wp-json\/wp\/v2\/pubblicazione\/184056\/revisions"}],"predecessor-version":[{"id":184489,"href":"https:\/\/peimar.com\/ae-en\/wp-json\/wp\/v2\/pubblicazione\/184056\/revisions\/184489"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/peimar.com\/ae-en\/wp-json\/wp\/v2\/media\/184070"}],"wp:attachment":[{"href":"https:\/\/peimar.com\/ae-en\/wp-json\/wp\/v2\/media?parent=184056"}],"wp:term":[{"taxonomy":"categoria-pubblicazioni","embeddable":true,"href":"https:\/\/peimar.com\/ae-en\/wp-json\/wp\/v2\/categoria-pubblicazioni?post=184056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}