Not sure where the OP is located but he said he reached out to JCP&L so he must be in their coverage area. I've used Green Power Energy out of Ewing before. They are licensed in NJ, Connecticut and PA. They came all the way down to Salem County to install my system. They do good work.
Another resource to get multiple quotes to upgrade your system is www.energysage.com This website allows you to enter the property address and some simple information about the existing electrical system and contractors that service your area can put together a proposal and a quote.
One of the main benefits of this site is that the contractors can only contact you through this site. To have them reach you by phone or email, you have to specifically select to have your personal info shown to a contractor who submitted a proposal. Once you accept a proposal, the other contractors can no longer contact you since their bid was not accepted.
Another benefit is the contractors all provide a proposal based on the same set of criteria. That way you are comparing apples to apples. The attached is what the basic proposal info includes, but each one has much more detail once you open it. The site gives the contractor the ability to add photos, equipment specs and manuals, energy usage and production graphs, as well as financial charts, but it puts you in control and makes it easier to find someone to get your job done.