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All episodes Episode 24 of 26

Solar forces rate rethink

4:43

Californian households on the top tariff tiers installed 1800 MW of solar and stopped paying anything. AB 327 puts the fixed charge back.

Download MP3 4.3 MB 4:43

Residential solar has utilities worried in California

Since the Enron situation, California has used a new tariff structure to protect residential electricity customers. Their tariffs differ in that they don’t have a monthly supply charge. If you don’t use any electricity, you don’t pay anything that month.

Instead what they have is a four tier electricity rate structure. Your usage is divided up into baseline, low, high and higher usage tiers. The baseline usage, a known amount, is regulated at 50% of what an average consumer would use and is charged at 13c/kWh. If you use more than your baseline, which is really only enough to literally keep the lights on and fridge running then that usage is charged at the higher amount of 16c/kWh. Both of these two tiers are regulated by the central utilities body in California. However, should you use more than those two tiers and become a higher using customer (e.g. a family of four) then you’ll be paying a rate that is set by the utility itself. The two higher tiers are at 27 and 31c/kWh.

Now you may consider this unfair to the family of four, however those on the equivalent of a government health care card would get a mandated cheaper rate (up to 30% off, which would almost remove any profit).

The remaining households that are large consumers of electricity have begun to install solar in droves (over 1800 MW so far). And it made sense. Why pay over 27c/kWh when the post-subsidy cost of solar approaches 17c/kWh. And with no fixed charges many of these households would have had zero net usage, and hence paid nothing whatsoever on their monthly bill.

A new law is born

Well the public utilities commission has been looking into this problem for a few years now, and recently proposed a bill that was signed into law: AB 327, which allows for a restructure of tariffs and to include a fixed monthly charge moving forward on residential customers.

The bill allows for a maximum fixed charge of $10 per month, and increases to align with inflation only.

The changes bring residential rate in line with what we expect

These changes won’t save the utilities from the long term death spiral. We have a similar set up in Australia with higher supply charges which hasn’t prevented a drop in the network provider’s revenue from lower sales volume.

The goal of the various electricity regulations are to equitably distribute the cost of providing electricity based on causation, while protecting those that cannot pay. It turns out that allocating charges for electricity to satisfy these constraints, and those of the private network owner’s requirement to shareholders is difficult to balance. So expect further changes in coming years as we course correct.

Mentioned In this Podcast

Top 3 in wind

  • Macarthur: $950k
  • Waubra: $890k
  • Musselroe: $590k
Read the transcript

Transcribed from the recording by machine, then edited for punctuation and paragraphing. Names, figures and misheard words have been corrected where the original show notes or the rest of the series settle them; anything they could not settle is left as spoken, rough patches and all.

Hi there, I’m Jervis Whitley. Today is Friday, 22nd of November, and you’re listening to WindFront, the weekly roundup of the wind industry from Australia and around the world. Today I’m talking about a change in California that has public utilities scared and changing their rates. And I’ll take a look at the weekly top 3.

Since the Enron situation, California has used a new tariff structure to protect residential electricity customers. The tariffs differ in that they don’t have a monthly supply charge. So if you don’t use electricity, you don’t pay for anything that month. Instead, what they have is a 4 tier electricity rate structure. Your usage is divided up into it, like a baseline, a low, higher and even higher usage tier. So the baseline usage, it’s a known amount and it’s regulated at 50% of what an average consumer would use and is charged at about 13 cents per kilowatt hour, which is really a rock bottom price, kind of like our off peak rates here. Now you can use that at any time during the day. If you use more than your baseline, which is really only enough to keep the lights on and the fridge running, the net usage is charged at a higher amount, at 16 cents per kilowatt hour.

Now both of these 2 tiers, the baseline and the one higher than that, are regulated by the central utilities body in California. However, should you use more than those 2 tiers and become a higher using customer, for example, a family of four, then you’ll be paying a rate which is set by the utility itself. The 2 higher tiers are charged at 27 and 31 cents per kilowatt hour. Now They may consider this unfair to the family of four. However, those on the equivalent of a government healthcare card would get a mandated cheaper rate, and it’s up to about 30% off, which would almost remove any profit.

The remaining households that are large consumers of electricity have begun to install solar in droves, in fact, over 1800 megawatts so far. And it makes sense. Why pay over 20 cents a kilowatt hour, when the post-subsidy cost of solar approaches 17 cents a kilowatt hour, according to a recent study. So with no fixed charges, many of these households now have 0 net usage, and hence pay nothing whatsoever on their monthly bill.

And this is where the utilities got scared. They’ve been working with the Public Utilities Commission over the last few years, as to a way to fairly distribute the cost of electricity. And now a recently proposed bill was signed into law, which is AB 327, which allows for a restructure of tariffs to include a fixed monthly charge moving forward for residential customers. And the bill allows for a maximum fixed charge of $10 per month, and increases to align with inflation only.

So previously, what we had was a situation where the majority of low using consumers had a regulated rate, which was so low that the utility probably could only barely cover costs, not really make much money on them whatsoever. And the customers that could afford it, and were using quite a lot of electricity, were installing solar. And so they were finding that many of the residential customers weren’t falling into those 2 higher tiers, which are the only 2 tiers that the utility gets a chance to set the rate themselves. So their revenue was obviously declining because of that.

But I think these changes won’t save the utilities from a long-term death spiral. We have a similar setup already in Australia with higher supply charges than what they have, and it hasn’t prevented a drop in the network providers’ revenue from lower sales volume here. The goal of various electricity regulations are to equitably distribute the cost of providing electricity based on the causation, while protecting those that cannot pay. But it turns out that allocating charges for electricity to satisfy these constraints and those of the private network owner’s requirement to shareholders is difficult to balance. So I expect further changes in coming years as we course correct.

Much lower week in wind this week. Waubra taking the top spot, just over half a million dollars, Snowtown, and Waterloo down there, a bit lower. Macarthur falling out of the top three, down at 300,000 for the week.

So that’s all for me until I see you next time. Keep buying those green electrons.