There are two electric companies in the Metro Phoenix area, SRP and APS. You are correct that last year APS wanted a connection charge but only got a fraction of what they wanted, around $5 per month. However, SRP is not required to get outside approval for rate changes like APS is and just introduced an additional $50 per month connection charge for customers with solar. Now APS has once again submitted a request for an increased connection charge and was able to get an additional $21 per month charge approved. I was in the process of putting solar on my home and had signed a contract when this new charge was announced. Luckily, I was still within the 3 day cancellation window and was able to back out.