The sneaky war on rooftop solar from Australia's utilities | RenewEconomy

The sneaky war on rooftop solar from Australia’s utilities

Utilities are striking back at rooftop solar by changing their billing structure. Changed industry conditions call for innovation, not impediments.


Utilities are striking back at rooftop solar by changing their billing structure. Changed industry conditions call for innovation, not impediments. Australian Ethical’s International Share’s Portfolio Manager, Nathan Lim, explains.


Utilities are being sneaky

We previously wrote about how it is a mistake to think utilities will disappear with the growth of distributed generation. Utility companies could be expected to respond to the challenges to their dominance with the growth of rooftop solar. However, their response to date could best be described as sneaky.

The current utility business model

Utilities around the world pretty much all use the same approach to earning a profit. With government regulatory oversight, they determine the total cost of providing their service and then pass this cost with a reasonable mark-up on to its customers. The cost to customers has traditionally been a blend of a fixed and a consumption-based charge, with the fixed charge component typically small to encourage energy conservation.

In essence, a household would be rewarded with a lower bill when they used less energy. Alternatively, a bill that was 100% fixed would mean households would experience no savings by using less energy and, in fact, might use more. Just think about how much you ate the last time you went to an all- you-can-eat restaurant!

How rooftop solar upsets the utilities

Customers who install solar panels reduce their energy consumption from the utility. Based on the current utility charging approach, less power consumption results in less revenue and less profit. Unsurprisingly, utilities have started to lobby their regulators for changes in their charging structure. They increasingly are now opting to increase fixed charges while simultaneously reducing variable charges. To a typical non-solar household, the change is often invisible as there will frequently be little or no impact on their bill. However, by shifting more of the monthly bill into the fixed category, the benefit of installing solar is greatly diminished. In effect, the utility has found a way to take back the lost revenue a household saves when they go solar.

The rise of fixed charges

Fixed charges are going up everywhere. According to the NC Clean Energy Technology Center in their quarterly assessment of the US solar policy, 32 fixed charge increases have been proposed in 18 states. The average proposed increase is seeking a 59% increase in the monthly fixed charge from US$9.70 to US$15.45 for all customers (solar and non-solar). Thankfully, of the 15 proposals decided in the June quarter, only nine got an increase and then only at about half the amount requested.

Utilities have also sought increases that specifically target solar households. Five states are considering such solar-specific charges. Two states are basing the charge on the size of the solar panel system, and three states are basing charges on peak demand. Peak demand charges have traditionally been reserved for business as they can put significant, intermittent strain on the system due to their size.

For example, think of a factory with hundreds of workers that suddenly turn on its air conditioning for the entire facility for an hour until the hottest part of the day passes. A peak demand charge is calculated by observing the maximum load a customer draws over the day. This peak typically only lasts a short period, but the utility must have significant resources on standby ready to deal with these daily surges. Incredibly, utilities are now applying the same logic to households targeting surges in their uses to drive solar-specific charges.

We can see this happening in Australia

Even here in Australia, the Queensland Competition Authority (QCA) recently raised the monthly fixed charge for households and lowered the consumption charge. The monthly fixed charge rose 28% while the consumption charge (variable portion) fell 12%.

Using the table below from the QCA we can see the impact on households:


Based on the latest data from Energex, we estimate the typical Queensland home uses 5,939 kilowatt hours of electricity per year. Conversely, the average home with solar only uses 2,641 kilowatt hours. Looking at the first column of the QCA table above, a household that consumes 6,000 kilowatt hours will see a 3.7% reduction in their bill (last column). However, smaller consumers (like a solar household) will see an increase of between 2.5 – 7.1%. This feels a lot like solar is under attack.

There need not be a war

In fairness, utilities need to earn something for maintaining the grid. Solar households predominately still need grid power when it is dark or overcast, so they rightfully should pay something as long as they remain connected. We are merely concerned that utilities will prefer to only lobby for higher fixed charges instead of adapting their business model to the changing realities of the grid.

As customers, we need to remain vocal regardless of whether we have solar or not. We need to keep challenging the utilities and regulators to keep the system both fair and progressive. When companies face change, we do not (and should not) reward those that sit still and fight the tide. Consider Kodak or Seven West Media, who did not adapt to changed industry conditions.

Kodak is now bankrupt having famously invented the digital camera but then concealing it to protect their film business. Seven West has yet to adapt fully to the digital era and now face a new threat from Netflix. Seven West’s stock price continues to make new all-time lows.

Times are changing for utilities and we believe they need to redefine their role in the grid. In the future, we see utilities more focussed on delivering reliability and facilitating the movement of energy between producers and consumers, whoever they may be. There need not be a war on solar – but it is up to the utilities to stop behaving like there is one.

Nathan Lim is a portfolio manager with Australian Ethical Investment.

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  1. phred01 5 years ago

    Sky rocketing fixed charges will accelerated grid desertion as soon as storage reaches break even point. Nxt move will be fixed charges if the grid pass by ur property

    • mick 5 years ago

      wouldn’t have prayer unless utility is owned by the govt in this day and age it would result in a class action

      • phred01 5 years ago

        Govn’ts have been known to pass special legislation for the rich & powerful

        • mick 5 years ago

          agreed but these days they wouldn’t have the guts also lets never get laws confused with justice (note for self)

          • MaxG 5 years ago

            I would be careful with this; what about the LIBs changing the law for environmental groups to object to whatever development. What about trade agreements, which have only disadvantaged the Australian public; What about asset sales; e.g public utilities. But then, you may have cynical, and I didn’t get it 🙂

          • mick 5 years ago

            not too jaded I hope lol,mate like you im not going to see 50 again we were a different generation than gens x and y,they are so far ahead of the curve its staggering to me anyway,hence govt constantly piling on rules to keep them down,when an sa car salesman privatised etsa there wasn’t a murmer when newman tried it brought down the qld govt.the unfair trade agreement wont go through till we find out what the secret is I doubt turnbull would be game to put his name to abbotts ridiculous environment protest rule as it would effectively be an association law as applied to motor cycle groups good luck with that cheers for forbearance

    • MaxG 5 years ago

      The charges will be adjusted/maximised to the point of avoiding such customer behaviour.

  2. MaxG 5 years ago

    Nicely explained, however, Kodak is not the state-owned electricity network (corporations) or other utilities for that matter. The neoliberals have for the last decades dismantled and are dismantling anything that benefits the ordinary people. (Reduce government, reduce taxes; corporations rule.) If this succeeds (and I reckon it will) everything will need to be paid for; no dough no go.

    • nakedChimp 5 years ago

      Once they own everything and every profit bearing enterprise or service is tapped to funnel the output into the growing pile of money for the 10% have’s of this world then we’re there. Don’t know where to from there, but it will be very interesting.

  3. Paul Turnbull 5 years ago

    I agree. Same with water. The utility wants a less variable income, the consumer the incentive to consume less. The completion for the grid operators is from domestic battery storage – to remain in business it must pay more for surplus power from solar panels than it costs to store privately and charge less for power than solar panels can supply. If it can’t be done the grid is finished. Replacing coal and gas with renewables is the goal and regulated utilities operating under sound policies have role to facilitate the transition.

  4. Ian 5 years ago

    I foresee a role for the electric vehicles enabling households to go off grid. A small car like a Nissan leaf has 34 KWH of battery storage. Apparently the average house requires 4 kWH of storage to cover the night. With rapid charging stations the car can be charged whilst at work , driven home and used to provide electricity for the night and then driven back to work the next day, or it could be used to fetch electrical energy from the local shops to provide the households needs when the roof top solar and battery is affected by weather. You can imagine a conversation at home:

    ” honey, I’m off to the shops to fetch some milk”

    ” Ah, won’t you get some electricity, our batteries are running low and the rellies are visiting”

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