Advocating for 3-Phase Power in the Upper Ovens Valley
What Is 3-Phase Power?
3-phase power is a type of electrical distribution that delivers electricity in three alternating currents, rather than just one (as in single-phase power). This system is more efficient and powerful, making it ideal for homes and businesses that use high-demand appliances, electric vehicles, or renewable energy systems like solar and batteries.
In practical terms, 3-phase power allows for:
- Faster and more efficient charging of electric vehicles, including bidrectional charging in 2026
- Larger solar systems with greater export capacity
- Larger home battery systems with greater export capacity
- Support for high-powered appliances like induction cooktops and heat pumps
- Improved energy resilience and grid stability
Why It Matters
Bringing 3-phase power to every home, business, and streetlight in our towns and villages is a critical step in our renewable energy transition. It benefits everyone—homeowners, businesses, energy distributors, retailers, transport systems, and the grid itself.
Key Benefits of 3-Phase Power
For Homes & Businesses
- Larger Solar PV Systems: Install up to 15 kW (5 kW per phase), saving $1,000–$1,800 annually.
- Faster EV Charging: Use 22 kW chargers to fully charge in 3–4 hours.
- Efficient Appliances: Induction cooktops and heat pump heating systems perform better.
- Electrification: Transitioning off gas improves air quality and reduces health risks.
- Battery Storage: Enables larger home batteries (20–60 kWh) for energy trading and backup.
Energy Resilience
- Fixed Batteries: Provide backup during outages, especially important in areas with a single power line vulnerable to bushfires and storms.
- Mobile Batteries (EVs): Offer cheaper storage and can power homes during outages. Bidirectional EVs (from 2026) will allow energy trading and backup for multiple homes.
For the Community
- Economic Impact: Every $100 saved on grid electricity returns $55 to the local economy.
- Local Spending: Upper Ovens Valley spends $11–12 million annually on electricity in 2025; Alpine Shire spends $35–40 million in 2025.
- EV Savings: Each EV can save $1,000–$3,000 annually, boosting the local economy.
For the Grid
- Reduced Infrastructure Costs: Less need for costly upgrades to handle peak demand.
- Grid Stability: Supports the transition to renewables and helps manage price fluctuations.
- Virtual Power Plans (VPPs): Home batteries can be used to support the grid and earn income.
Recommendations
To accelerate the adoption of 3-phase power, SUO recommends:
- Local Councils:
- Require 3-phase power to the meter board for all new buildings.
- Include 3-phase power in street lighting for new estates.
- Homeowners & Builders:
- Add 3-phase power during rebuilds or renovations when feasible.
- Energy Providers:
- Encourage Ausnet Services (local DNSP) to upgrade the network to 3-phase.
Looking Ahead
3-phase power is not just a technical upgrade—it’s a foundation for a cleaner, smarter, and more resilient energy future. SUO continues to advocate for infrastructure that supports community-led renewable energy solutions and empowers residents to take control of their energy use.