Disclosed are module connectors for flexible photovoltaic modules. A module connector may include a clamp and an insert configured to be inserted into the clamp. The insert may have an insert body, an electrical lead and an electrical connector. The clamp may have a body portion with a recess configured to receive the insert body, a first clamping portion configured to clamp a second portion of the electrical connector to connect it to the body portion, and a second clamping portion with a first clamping surface configured to contact a first sheet of the module and a second clamping surface configured to contact a second sheet of the module. The second clamping portion may be configured to connect the clamp to the module such that the clamp overlaps and extends around a part of the first sheet, a part of the module's exterior edge surface, and a part of the second sheet.