Australia's National Electricity Market is changing rapidly. Wholesale spot prices are more volatile than ever, and the traditional model of "generate during the day, sell to the grid, buy back at night" is rapidly becoming financially disadvantageous for solar homeowners. The homeowners who are thriving are those who have moved to a Virtual Power Plant (VPP) or adopted a strategy of maximum self-consumption ΓÇö and in 2026, this strategy is easier and cheaper to implement than at any point in the grid's history.
Why Feed-In Tariffs Are No Longer the Strategy
In 2012, premium feed-in tariffs in NSW reached as high as 60 cents per kWh. Today, most retailers offer between 4ΓÇô8 cents per kWh for excess solar energy exported to the grid. Meanwhile, the retail rate you pay to import power has climbed to 35ΓÇô42 cents per kWh in most states. This means selling one unit of solar to the grid and buying it back at night costs you approximately 30 cents per unit in lost value. A 10 kWh battery stores energy worth over $3 per day at current rates.
The Self-Consumption Imperative
The goal in 2026 is not to have the biggest solar array ΓÇö it is to achieve the highest possible self-consumption ratio. Self-consumption refers to the percentage of your generated solar energy that you actually use yourself, rather than export. The national average self-consumption ratio for a solar-only system (no battery) is approximately 28ΓÇô35%. Add a well-sized battery and this rises to 85ΓÇô95% for most Australian households.
What Size System Do You Actually Need?
Our Master Electricians use a three-step analysis to determine the optimal system size for each home:
- Step 1 ΓÇö Load Analysis: We review your last 12 months of electricity bills to understand your daily and seasonal consumption patterns.
- Step 2 ΓÇö Generation Modelling: Using your roof orientation, pitch, shading data, and postcode, we model expected generation output month by month.
- Step 3 ΓÇö Battery Sizing: We match battery capacity to your evening and overnight load so you can comfortably ride through to the next morning's solar generation.
"SunStack didn't try to sell me the biggest system. They sold me the right system. My bill went from $480/quarter to $22/quarter." ΓÇö Michael R., Hunter Valley NSW
The NSW Rebate Makes This the Best Time to Act
The NSW Peak Demand Reduction Scheme is actively funding battery installations across the state. Combined with Federal STCs, total upfront subsidies for an eligible system can reach $3,500 or more. These incentives will not last indefinitely ΓÇö the funding pool is finite, and demand is increasing month-on-month as awareness grows.
Virtual Power Plants: The Next Level
Once your battery is installed, SunStack can connect you to a Virtual Power Plant program, where your battery participates in grid stabilisation events in exchange for credits on your electricity bill. In 2025, VPP participants in NSW earned an average of $320 additional credits per year ΓÇö on top of their existing savings ΓÇö with no impact on their own energy reliability.
Ready to Take Control of Your Energy Future?
Use our Battery ROI Calculator to model your specific payback period, or book a free in-home consultation with one of our CEC Master Electricians. There is no obligation, no pushy sales calls ΓÇö just honest, expert advice tailored to your home.
