— by Tom Owens —

Every utility, including OPALCO, makes decisions on its rate design. These decisions are made for some very good reasons. However, they can impact individual customers quite differently. This article is a short review comparing the rates designs of OPALCO and Puget Sound Energy (PSE), our nearest electric energy provider. You will see that if you are a low usage OPALCO customer, you are paying significantly more to OPALCO than a similar PSE customer would be paying. If you are a high energy use customer you can be better off with OPALCO.

I am a low energy user, heating with wood or oil. My July bill was $90.28 from OPALCO for 538 kwhr’s of energy use. Using PSE’s rate schedule, my bill would have been $59.23. That makes OPALCO about 50% higher than PSE. What a surprise! Note that OPALCO is charging an ‘interim” surcharge to make up for last winter’s warmer weather. PSE is not currently allowed to do this.
But what about the winter when I may use more energy? When I compare my costs for January through July, OPALCO again came out about 50% higher than PSE ($556.25 for OPALCO vs $378.63 for PSE). So clearly, I am not using enough electricity to make OPALCO a better deal. It turns out that if I would have used about 3100 kwhr’s of energy usage every month of the year, OPALCO and PSE costs would be about equal.

This is the result of the rate structures used by each utility. OPALCO uses a fixed cost of $38.90 and an energy (kwhr) charge of $0.0855. PSE uses a fixed charge of $7.87 and an energy (kwhr) charge of $0.0948. It takes a good deal of energy (kwhr) usage at OPALCO’s lower energy rate ($0.0855 for OPALCO vs $0.0948 for PSE) to make up for OPALCO’s high fixed charge ($38.90 for OPALCO vs $7.87 for PSE). The difference in the energy charge is about $0.01/kwhr. The difference in the fixed charge is $31.03 per month. So to find the energy usage level where the two utilities have about same cost, you must divide the $31.03 by the difference in energy charge, $0.01/kwh. The result is 3100 kwhr’s. This does not take into account the increases in each utility’s energy charge at the steps in the rate design for higher energy usage (at 1500 and 3000 kwhr’s, different for each utility). It also does not include OPALCO’s current surcharge to make up for last year’s warm winter.

So OPALCO is not a “low cost” energy provider for those of us who don’t use a lot of electric energy (kwhr’s). OPALCO can only be a “low cost” provider if you use enough electric energy (averaging more than 3100 kwhr’s per month over the year).

This exercise is NOT to judge how good a job OPALCO is doing, it is simply illustrate how OPALCO’s rate design impacts some of its customers. A statistically valid comparison of utility performance is possible and has been done elsewhere a number to times. This is NOT that type of study. Common “benchmarking”, where a few utilities are compared against each other, is a totally invalid way to go.

To satisfy those who will want to comment on OPALCO’s performance here are a few of the many points you should consider.

There are many reasons why OPALCO’s rates are what they are. The subsea cables add a lot of costs. OPALCO has to meet the same industry standards in its distribution system as all other electric utilities. The customer base is small and not densely packed. It has chosen to serve remote islands and to place cables underground. OPALCO enjoys a very low cost for the energy it purchases from BPA to supply our needs. OPALCO pays no tax or dividends to investors but instead tries to keep rates low for the benefit of its members.

There are also many reasons why PSE’s rates are what they are. PSE is regulated by the State of Washington and must file rate cases to gain approval of any changes to its rates. It has to pay dividends to stockholders and taxes to the federal, state and local agencies. When PSE borrows money for its operations and capital projects, the costs are higher than OPALCO’s costs. PSE must operate and manage generation plants, transmission assets and provide system control for its service area. It does not enjoy BPA’s low rates for energy to the extent OPALCO does. It does have a much larger customer base that in places are very densely packed.

Good luck coming to any performance conclusions with all these variables.