That's true, but maybe not for the reason you think.

Con Ed(along with all other electric utilities in the state) don't make money off the sale of electricity. The cost to generate electricity is passed along directly to the customer - whatever con ed pays for a kilowatt-hour, the customer pays. Instead, utilities in new York make money off the construction of capital assets used for the delivery of electricity. Utilities in the state are allowed to earn a return on those capital expenses which comes from customers. Con Ed doesn't make electricity, they deliver it. Just like FedEx or UPS don't make products, they just deliver them. Shipping a package costs money because UPS needs to buy and maintain trucks, planes, and offices and people to do all the things.

For example, if the electric utility pays $100 for energy, then so does the customer(s) that uses it. If the utility spends $1000 installing electric infrastructure used for the delivery of electricity(poles, underground cables, transformers, etc.) then the customer base pays the utility back for that expense PLUS about 10%. That capital expense plus return is recovered from the customer over the course of usually around 40 years(depending on the specific asset).

The reason con ed isn't ready for solar panels all over everywhere is technical. Right now the power grid is built and operated on the assumption that power should only flow in one direction. If it starts going the other way, then something is wrong and circuit breakers open to de energize a fault. That was true for the first century or so of electric power distribution.

Now, it's less true. The problem is that if one building starts pumping energy back into the grid, conventional distribution equipment can't differentiate that from a fault and trips circuit breakers all over the place. How to integrate these types of what we call "distributed energy resources" is currently a huge area of development. This is driven by utility company people also giving a damn about the environment(just like normal humans), but primarily by NY state's electric utility regulator called the Public Service Commission. They have established "REV" or Reforming the Energy Vision. It's just in its early stages but will enable NY to be ready for widespread adoption of renewable and distributed energy resources.