I've been watching the Arizona corporate commission hearings on UNS utility net metering and proposed three part rate design and have to admit, the future is clearly in Solarcity's favor nationwide in future rate cases on net metering.
First, the utility wants to put solar customers in a separate customer class. However, they haven't done a cost of service study on what it costs to serve solar customers. This is standard procedure to put anyone in a separate rate class, but I guess not for solar. They say there is a cost, but don't have a single data point to prove it. I have to say the same situation is also in Nevada. Nevada just put solar customers in a separate rate class with no cost of service study on rooftop only customers. This will be a significant problem for a commission to dismiss, since if they allow it, it shows a discrimination toward specific utility customers since they are treated differently when evaluating rates. Across the nation, the same discrimination situation will happen if a cost of study is not conducted on rooftop solar customers by themselves. This then leads to actual analysis on costs associated with rooftop solar in public hearings and put on the record for all to see. Those numbers will reveal a different story then the "assumed" cost model utilities are using and will be in Solarcity's favor.
Second, they are saying all rooftop solar customers are being "subsidized" by other non-solar ratepayers and this is the most pressing issue to stop this subsidization now. However, even if everyone of UNS customers are causing a cost on other customers, UNS actually has 92% subsidization happening from other causation points. Wow, if the goal is to reduce subsidization then how come 92% of the problem is ignored to focus on rooftop solar? Oh by the way, UNS doesn't even know what the cost to serve solar customers, but they know it does and it's the cause of rising rates on other customers. This argument fails even basic scrutiny and is very relevant to all utilities across the nation in their net metering arguments.
Third, and I'm just going to stop here since there are many many other points to shoot down, the utility sees any cost saving by a customer as a problem. In order to justify "revenue requirements" they have to identify the costs. The utility sees costs(with guaranteed rate of return imbedded) should equal revenue. If revenue does not cover cost, then they need to raise rates on rate classes. It was shocking that the utility representative said that if customers save money, then that is cost that does not provide the "revenue requirement" needed to cover the cost, so they will need to either redesign the rate or charge more on the rate classe(s). He said the goal in rate design is to be "perfect" and he sees himself well retired before that will ever happen if ever(and he laughed at this too). By this logic, no matter how much customers save, they will ultimately have to pay whatever the utility needs to recover those savings either through "proper rate design" or increasing rates under current rate design. This is the fatal flaw under the monopoly utility model as it is and will be clearly exposed as customer sided energy efficiency and energy production products proliferate. As it stands, as DG proliferates and reaches scale, the monopoly utility model will have to be dismantled and a new utility model develop nationwide. It is inevitable since there is no way utilities can justify cost-revenue requirement business model under a commission. As such, more cases that go through the current "rate case" process, the more and more evidence to demonstrate this becomes accumulated. Solarcity and other DG will benefit wildly as they will build even more negotiating power to move to a utility as service model.
The question is how long will this take? Will the national net metering law be the massive catalyst that will get us there sooner then later?
Wild times of change...