The 'Sun Tax': Why You Might Pay to Export Solar

The "Sun Tax" is here, but it's not as scary as the headlines suggest. Officially known as "Two-Way Pricing," this AER rule allows networks to charge solar owners a small fee (approx 1-2c/kWh) for exporting energy during "solar traffic jams" (typically 10 AM - 2 PM).

The Flip Side: Reward Pricing

To balance this, networks now pay a premium rebate for exporting solar during the evening peak (4 PM - 8 PM). If you have a battery (or an EV with V2G), you can discharge during this window and earn 30-40c/kWh.

Adapt or Pay

For most households without batteries, the cost is negligible (estimated $20/year). But it signals a shift: the grid wants your power in the evening, not at lunch. Orienting new panels West instead of North is now a smart strategy to catch that afternoon sun and avoid the tax.

Check Whether Your Network Has Actually Rolled It Out

Two-way pricing isn't a single national policy switched on everywhere at once — it's being introduced network-by-network, on a schedule each distribution business sets and the AER approves. Some networks in NSW, SA, and Victoria have introduced it for new solar customers first, phasing in existing customers later, while others haven't implemented it at all yet. Because the charge (and the reward tariff on the other side) only shows up if your specific network and retailer have adopted it, check your latest bill or ask your retailer directly rather than assuming it applies to you.

Practical Ways to Come Out Ahead, Not Just Break Even

• Shift discretionary exports, not usage: The charge only applies to power you export during the export-charge window — using more of your own solar at midday (running the dishwasher, pool pump, or EV charger) avoids the fee entirely by avoiding the export in the first place.
• Consider a small battery, not necessarily a big one: Even a modest battery that captures your midday excess and releases it during the evening reward window can turn what used to be a low-value (or now slightly taxed) midday export into a much higher-value evening one.
• New installs: think about orientation early. If you're only just planning a system, a west-facing sub-array captures more late-afternoon sun, naturally lining up generation with the reward window instead of the traffic-jam window.

Checklist for Action

• Audit your current bills: Gather your last 12 months of statements for Solar.
• Compare the market: Use SaveNest's comparison tools to identify the top 3 cheapest providers in your area.
• Check for loyalty taxes: Call your current provider and ask them to match the best offer you found online.
• Verify concessions: Ensure you are receiving all state and federal rebates you are entitled to.
• Set a reminder: Mark your calendar for a 6-month review to ensures you stay on the best plan.
• Share the savings: Tell a friend or family member how much you saved to help them avoid the 'lazy tax' too.

Related Guides

• Commercial Solar: How Businesses Are Slashing Costs
• Solar Panel Warranties: Reading the Fine Print
• The Environmental Impact of Going Solar in Australia