原文
- Tariff
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- Solar-weighted import rate
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- Annual savings
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- Lifetime savings (20 years, net of capex)
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Savings come from the power you use yourself: most plug-in kits can't claim the Smart Export Guarantee (it needs an MCS install), so exported energy is assumed to earn nothing. Self-consumption defaults to 60% (spec §3.7). Time-of-use tariffs use a typical-day model. Refresh quarterly.