Abstract: An insulating glass unit (IGU) is provided that includes a first substrate and a second substrate. The first and second substrates are spaced apart and substantially parallel to each other. The two substrates are hermetically sealed. A mini-junction device is positioned between the two substrates. The mini-junction device is at an edge of the two substrates without extending beyond their periphery. The mini-junction device houses an electrical coupling between a pair of wires and a pair of leads. A first end and the pair of wires and a first end of the pair of leads are coupled together. A second end of the pair of wires extends beyond the periphery of the substrates. A second end of the pair of leads extends through the first substrate. The IGU also includes a photovoltaic module coupled to the first substrate and electrically coupled to the second end of the pair of leads.