Roof-integrated Photovoltaic Modules


Photovoltaic roof tiles or shingles are usual roof tiles with integrated solar cells used for roof covering, together with standard roof tiles or shingles. They are tightly integrated into the roof. Many different forms are used - photovoltaic roof tiles, photovoltaic roof shingles, solar laminates, modules with integrated solar cells as roof covering elements, transparent laminates or modules on ligh weigt substrate for flat roofs etc. Solar (photovoltaic) roof tiles and shingles are probably the most interesting possibility how to integrate solar cells into the building's roof. Many different forms of solar roof tiles are available on the market. The most common solutions are photovoltaic roof tiles with amorphous solar cells. Roof tiles with mono- or polycrystalline solar cells can also be used together with the classical roof tiles of the same producer, in such case higher temperature and lower yield in case of limited air flow behind solar roof tiles must be considered during design phase. Roof shingles are produced with crystalline or with thin-film solar cells. Other possibilities are thin film solar cells on glass or metal substrate.


Tilted roofs

Some advanced sollutions were presented in past few years. One of the most aesthetic solutions (product is no longer available) was probably the Pfleiderer Roof Tile Terra-Piatta® - Solar produced by Pfleiderer-Dachziegelwerke. Product was awarded with the German Design Award 2002. The Design Award of the Federal Republic of Germany, is the highest official design honour of the state and is lent by the Rat für Formgebung/German Design Council on behalf of the Federal Ministry for Economics and Technology.

Roof integrated tiles, courtesy Pfleiderer Dach Roof integrated tiles, courtesy Pflederer Dach

Roof integrated solar PV tiles Terra piatta Solar
(courtesy: Pfleiderer/Creaton)

Solar roof tiles and shingles are connected to each other via usual connectors used in photovoltaics. The power range spans from several Watt (roof shingles) to about 100 Watt (roof tiles with crystalline solar cells). Special (custom) designed solutions are glass laminates with integrated solar cells or thin film solar cells on glass or metal substrate. Thin film solar cells on metal substrate are used for integration into facades too. Some roof tile producers offer different roof integration possibilities for solar thermal and photovoltaic systems. All solar shingles and solar roof tiles should be tested according the IEC 61215 like all other photovoltaic modules.

Flat roofs

For flat roofs amorphous Si (usually flexible) modules are available. As modul substrate EPDM (ethylene propylene diene Monomer/M-class) synthetic rubber is used. This material can also be used in combination with bitumen what makes it a preffered choice for flat roofs.

Flat roof, courtesy Solarintegrated Flat roof, courtesy Solarintegrated

Light weight modules for flat roofs
(courtesy: Solarintegrated)


Into church's roof in Mecklenburg-Vorpommern (northern Germany) 88 mono-crystalline modules Terra-Piatta-Solar® with peak power 5 kWp were integrated. Carefully planned photovoltaic system with 50 m2 large array does not suffer from the partial shadowing of the modules.

BIPV and historical heritage, courtesy Pfleiderer Dach BIPV and historical heritage, courtesy Pfleiderer Dach

Into churchs roof integrated solar PV tiles.
Left roof before renovation, right roof inside view after renovation
(courtesy: Pfleiderer/Creaton)


Roof integrated modules

Roof tiles and shingles with solar cells

Roof tiles on metal and flexible substrates

Last modified: 4/1/2015 6:43:18 PM