• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer
One Step Off The Grid

One Step Off The Grid

Solar, storage and distributed energy news

  • Solar
  • Battery/Storage
  • Off-Grid
  • Efficiency
  • Software
  • Podcasts
  • Tariffs
  • Electric Vehicles
  • Electrification

Solar and battery storage already cheaper than grid power in Australia

July 21, 2015 by Giles Parkinson Leave a Comment

Leading BNEF analyst says solar + storage unstoppable, because they are already cheaper for Australian households to install than electricity from the grid.

Australian consumers can already install significant amounts of rooftop solar and battery storage at a cost that is cheaper than electricity from the grid, and the uptake of these two technologies is likely to be “unstoppable.”
This forecast came from Kobad Bhavnagri, the head of Bloomberg New Energy Finance in Australia, while outlining the reasons for the groups bullish forecasts, which predict 33GWh of battery storage and 37GW of solar PV in Australia by 2040.
“Solar and battery storage is simply unstoppable,” Bhavnagri said. He used this graph below to illustrate why.
bnef storage prices
Retail prices will continue to grow, but even if they remain flat, rooftop solar PV can already provide power to consumers in homes at well below the price of electricity.
Adding one kilowatt-hour of battery storage raises that cost slightly, but is still well below the cost of the grid-sourced power. Even 5kWh of battery storage can be installed and still costs are below that of the grid.
(These examples are taken in Queensland, with a 4kW rooftop solar system. A different  version of this graph, showing the costs in payback terms, is included in this story on how battery storage prices are already falling in Australia).
“Storage technologies as well as PV will be able to provide costumers with electricity at a cheaper cost than the grid,” Bhavnagri says. “And as storage gets cheaper even larger amounts of storage will be able to supply consumers at a cheaper cost to the grid.
“On economic fundamentals this technology is unstoppable.”
Bhavnagri and many others, including Hazelwood coal generator owner Engie and a study by the CSIRO, believe that 50 per cent of all electricity demand will be supplied “behind the meter” by 2040.
Not that Bhavnagri is urging consumers to quit the grid altogether. He says this would not be rational. “We will still need the grid for different purposes,” he said, including for  back up capacity, support services, for the “Google operated” systems of appliances. “Grid and other companies have role in providing those services.”
But it will put huge pressure on networks to adapt their business models, and the way they operate the grid, and will almost inevitably result in a write-down of the grid’s value, which has been inflated by over-investment in recent years.
“The business model of the networks has to change. They have got to sell services instead of kilowatt-hours,” Bhavnagri said. “Much of what they built is redundant, resulting in excess capacity, and networks are overcharging and not delivering a commodity or service that is valuable to consumers.”

Giles Parkinson
Giles Parkinson

Giles Parkinson is founder and editor of One Step Off The Grid, and also edits and founded Renew Economy and The Driven. He has been a journalist for 35 years and is a former business and deputy editor of the Australian Financial Review.

Filed Under: Battery/Storage, Solar

Primary Sidebar

Sign up for our weekly newsletter

Emissions Counter

Renew Economy

RSS Energy News from Renew Economy

  • Tale of two Barnabys: One funding regions through wind power, the other screaming into the wind
  • Too late? Too slow? Too hot? Is climate progress really stalling?
  • Wind and battery output records smashed as new projects close in on key milestones
  • Wind turbine blade gets stuck between homes in small town on way to project site
  • First Tesla Megapacks arrive at massive four hour battery being built at ageing coal hub

RSS Electric Vehicle News from The Driven

  • Hyundai debuts 2026 Ioniq 6 high-performance EV with 478 kW of power
  • “We can lead the charge:” EV council wants V2G cables included in battery rebates
  • BYD to expand 1,000 kW EV charging capacity to international markets
  • Tesla hopes to expand Robotaxi operation to California in coming months
  • Tesla bumps Model Y range to massive 600 km, and offers new paint colour

Press Releases

  • Huge luxury Saudi resort goes 100pct renewables with one of world’s biggest batteries
  • How solar + storage can be a game-changer for people with disabilities

Footer

Technologies

  • Solar
  • Battery/Storage
  • Electric Vehicles
  • Energy Efficiency
  • Software/Gadgets
  • Other Renewables
  • Policy
  • Tariffs
  • Contact
  • Advertise with us
  • About One Step Off The Grid
  • Terms of Use
  • Privacy Policy

Copyright © 2025 · OneStep Genesis on Genesis Framework · WordPress · Log in