Path-Q Solar
How could changing export rates affect the value of adding more solar panels?
Answer
If exported electricity is compensated at a lower or less predictable rate than electricity used on-site, adding panels beyond your useful daytime demand may produce less value than expected. The effect depends on your consumption timing, export rules, system size, storage, and future rate changes.
Key points
- On-site use usually avoids buying electricity, while exports may receive a separate credit or payment.
- Lower export compensation reduces the value of excess generation and can lengthen the payback of additional panels.
- A battery, load shifting, or controllable equipment may increase self-consumption, but adds cost and operating considerations.
- Compare production and savings under more than one export-rate scenario.
What it depends on
- Current and expected export compensation
- Retail electricity prices and bill structure
- Hourly household consumption and solar production
- System size, battery operation, and applicable export limits
Risks and trade-offs
- A model using today's export rate may overstate long-term savings.
- Oversizing can increase investment without producing proportional bill reduction.
- A battery may improve self-consumption but may not be economically justified solely by export-rate changes.
Information you may need
- Recent interval or monthly electricity usage
- Proposed production by time of day
- Current export tariff and its change provisions
- Battery cost and operating assumptions
- Alternative system sizes and sensitivity cases
Your next step
What to do next
Ask for a quote model showing self-consumption, exports, and savings under current, lower, and changed export-rate assumptions.
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