The big problem is glue. Right now, we have no better (cheap, fast, durable) method to bond glass to plastic without using glue that lasts much longer than the

The big problem is glue. Right now, we have no better (cheap, fast, durable) method to bond glass to plastic without using glue that lasts much longer than the life of the panel. As nobody wants to buy a panel that needs gasket maintenance, we're stuck with glue (pun intended) holding us back from solar panels being easy to recycle.