Bus bar for use in flexible photovoltaic modules

A flexible photovoltaic module having a length and a width, the flexible photovoltaic module comprising:

• a flexible top sheet;
• a flexible bottom sheet;
• a plurality of photovoltaic cells electrically connected to each other and positioned in a sealed space between the flexible top sheet and the flexible bottom sheet, wherein the sealed space includes a first region at a first end of the flexible photovoltaic module, a second region at a second end of the flexible photovoltaic module, and a central region interposed between the first region and the second region that encompasses at least 75% of the photovoltaic cells;
• a first external electrical connector that extends into the first region and is electrically connected, in the first region, to the plurality of photovoltaic cells;
• a second external electrical connector that extends into the first region;
• and
• a bus bar that:
• comprises interlaced copper strands and an external insulation,
• has a length of at least 1 meter and a thickness of about 0.5 millimeters or less,
• has a conductivity that can conduct at least 3.0 amps of current,
• extends substantially the length of the flexible photovoltaic module and is positioned in the first region, the central region, and the second region, and
• is electrically connected, in the first region, to the second external electrical connector, and, in the second region, to the plurality of photovoltaic cells.