In the realm of energy policy, the debate over network pricing and consumer energy resources (CER) is a complex and crucial one. The recent piece by Rob Passey and colleagues at CEEM has shed light on a critical issue: the impact of high fixed network charges on home batteries, dynamic pricing, and CER. This article delves into the intricacies of this topic, offering a fresh perspective and a call to action for policymakers and regulators.
The Problem with Fixed Network Charges
The AEMC's pricing review aims to address a legitimate concern: under revenue-cap regulation, successful CER reduces grid consumption, squeezing network revenues. However, the proposed solution of loading more costs into fixed charges is a short-sighted approach. It shores up incumbents, locks in legacy cost structures, and fails to incentivize the network to compete on the value it provides. Personally, I think this is a critical oversight, as it undermines the very technologies and planning frameworks that are essential for a high-renewables system.
One thing that immediately stands out is the impact of high fixed charges on home batteries, rooftop solar, flexible loads, and electric vehicles. These technologies can deliver passive and active benefits, such as reducing peak flows through local networks and lowering wholesale demand during peak stress periods. However, turning a larger share of the bill into a fixed charge systematically weakens these behavioral signals, creating a design flaw rather than a side effect.
The Importance of Planning and Design
The issue is particularly acute in Western Australia and the Northern Territory, where we are integrating some of the world's largest hybrid solar-and-battery projects into relatively small and sometimes weak grids. In these systems, distributed devices are not a nuisance; they are an essential complement to utility-scale renewables, providing fast response, local peak reduction, resilience, and export into evening peaks. Policy that discourages CER uptake or flattens its value proposition is directly at odds with the needs of these transitioning systems.
From my perspective, getting planning right is as important as getting pricing right. Renewables Oriented Development (RODs) in urban and transport planning highlight how density, infrastructure, and well-designed precincts can be deliberately aligned with electrified transport and high renewable penetration. By embedding flexible demand, storage, and local generation into the shape of cities and corridors from the outset, RODs reinforce the CEEM argument: the network should be designed and priced to harness CER and ROD-style precincts, not to neutralize them.
A Balanced Approach to Network Pricing
There are better options than blunt fixed-charge increases. Network pricing can be made more cost-reflective without undermining equity. Carefully designed time-of-use and demand-based network charges, combined with targeted concessions for low-income and low-consumption households, preserve that balance. The signal becomes: 'use the grid when it's cheap and decarbonized, avoid adding to stress when it's not,' rather than 'pay the same regardless of how you use it.'
The Grid's Storage-Led Transition
Our recent work on how renewables and storage are steadily 'passing gas' in both the NEM and WEM underscores the point that the grid is now in a storage-led transition. Locking in legacy network-centric pricing risks slowing the very technologies that are delivering cheaper, more flexible power every half hour. High fixed charges might patch a revenue concern in the short term, but they do so by undermining the technologies and planning frameworks that make a high-renewables system work.
A Call to Action
In conclusion, the task now is not to fence CER in, but to design tariffs, markets, and urban forms that give a starry sky above and space to do the heavy lifting we so clearly need. It is time for policymakers and regulators to take a step back and think about the broader implications of their decisions. By embracing a balanced approach to network pricing and planning, we can create a future where networks, renewables, and consumers all benefit. Let's not fence in the future, but rather design it to be bright and sustainable.
