This power generation module includes: a power generating portion (30) including a power generating element (19); and a wiring substrate. The wiring substrate includes: a reinforcement plate; and a flexible printed circuit (79) provided above the reinforcement plate. The flexible printed circuit (79) has: an FPC land portion (70) configured to have the power generating portion (30) mounted thereto; and a FPC wire portion (73) connected to the FPC land portion (70). The width of the FPC wire portion (73) is smaller than the width of the FPC land portion (70).

This power generation circuit unit includes a wiring substrate and a plurality of power generating elements mounted to the wiring substrate. The wiring substrate includes: a first substrate (32E) and a second substrate (32F) to each of which the power generating element is mounted; and a coupling portion (33L) configured to couple the first substrate (32E) and the second substrate (32F) together. The first substrate (32E) can be disposed at at least two positions of: a first position separated from the second substrate (32F) by a first distance; and a second position separated from the second substrate (32F) by a second distance being greater than the first distance. The coupling portion (33L) has an FPC (flexible printed circuits). In a state where the first substrate is disposed at the second position, at least a part of the coupling portion (33L) is twisted.

A composition for forming a passivation layer, comprising a compound represented by Formula (I): M(OR.sup.1).sub.m. In Formula (I), M comprises at least one metal element selected from the group consisting of Nb, Ta, V, Y and Hf, each R.sup.1 independently represents an alkyl group having from 1 to 8 carbon atoms or an aryl group having from 6 to 14 carbon atoms, and m represents an integer from 1 to 5.

A solar cell includes a photoelectric conversion section that, includes an n-type crystal silicon substrate, a p-type silicon-based thin-film provided on a first principal surface, and an n-type silicon-based thin-film provided on a second principal surface, and further includes a first electrode layer on the p-type silicon-based thin-film, and a second electrode layer on the n-type silicon-based thin film. A patterned collector electrode is provided on the first electrode layer. On the first principal surface of the photoelectric conversion section, a wraparound portion of the second electrode layer, an insulating region where neither the first electrode layer nor the second electrode layer is provided, and a first electrode layer-formed region are arranged in this order from a peripheral end.

A first insulating layer is layered on first surfaces of solar cells. Herein, the first insulating layer is formed of polyolefin or ethylene-vinyl acetate copolymer (EVA). A second insulating layer is layered on the first insulating layer. Herein, the second insulating layer is formed of polyester resin. A first inter-cell wire rod and second inter-cell wire rod provided to the first surfaces of the solar cells are partially brought into contact with the second insulating layer.

A solar cell module includes solar cells having main surfaces to which inter-cell wiring members are connected, and an insulating member disposed on the main surfaces and the wiring members, and a first lead-out wire provided to the insulating member. The insulating member includes a first insulating layer formed of polyester resin, a second insulating layer formed of polyolefin or EVA and provided between the first insulating layer and the lead-out wires, and a third insulating layer formed of polyolefin or EVA and provided between the first insulating layer and the main surfaces. The third insulating layer has a thickness in a direction perpendicular to the main surfaces larger than a thickness of the second insulating layer.

This wiring module includes: a wiring substrate; a base portion at which the wiring substrate is placed; and an adhesive layer configured to adhere the wiring substrate to the base portion, wherein the wiring substrate includes: a land portion configured to have a power generating element mounted thereto; and a wire portion configured to be electrically connected to the power generating element, the adhesive layer has: a land adhesion region configured to adhere the land portion to the base portion; and a wire adhesion region configured to adhere the wire portion to the base portion, and a width of the wire adhesion region is smaller than a width of the land adhesion region.

A wiring substrate is configured to have a power generating portion mounted thereto. The wiring substrate includes a land portion and a wire portion. The width of the wire portion is smaller than the width of the land portion.

A solar cell module (100) comprises a first terminal (101) and a second terminal (102), a plurality of solar cells (110) and a switch (120). The solar cells (110) can be electrically connected to one another between the first terminal (101) and the second terminal (102) in order to generate a voltage between the first terminal (101) and the second terminal (102) in normal operation. The switch (120) electrically connects the first terminal (101) and the second terminal (102) to one another in a default setting or isolates the plurality of solar cells (110) from the first or from the second terminal (101, 102) and can be controlled in such a way that, when a valid control signal is present, the first terminal (101) is electrically isolated from the second terminal (102) or the plurality of solar cells (110) are connected to the first and the second terminal (101, 102).

A solar module assembly is provided that can include a framed solar panel. The panel may include bifacial solar cells, a front facing glass cover layer, and a back facing glass cover layer. A junction box may be mounted over the back facing glass cover layer. In particular, the back facing glass cover layer may have a cutout portion through which conductive leads connect to the bifacial solar cells and the junction box. The cutout portion may be formed along an edge or a corner of the back facing glass cover layer. The frame may have a first flange member that extends at least partially over the junction box and a second flange member that extends over the front facing glass layer. The junction box and the frame may be attached to the solar panel and hermetically sealed using silicone adhesive material, for example.