Path-Q Solar
How should I evaluate solar if I expect electricity prices to fall?
Answer
Use conservative or declining-price scenarios and determine whether the system remains acceptable without relying on rate increases. Lower future prices generally reduce bill savings, so focus on installed cost, self-consumption, financing, system life, and the project's return under flat and falling-price cases.
Key points
- Model flat, declining, and modestly increasing prices rather than choosing one forecast.
- Systems that offset high-value direct consumption are generally less exposed to lower export values than systems relying heavily on exports.
- A lower-cost system with strong production can remain viable even when price escalation is assumed to be zero.
What it depends on
- Installed price and funding method
- Future retail and export prices
- Consumption timing, system production, and battery use
- Maintenance, replacement, and ownership horizon
Risks and trade-offs
- Falling rates can lengthen payback and reduce resale-related value.
- Fixed utility charges may remain even when energy prices fall.
- Adding storage or oversizing may be harder to justify if the avoided energy value declines.
Information you may need
- Current tariff and bill structure
- System production and self-consumption estimate
- Total cost and cash-flow results under flat and declining price scenarios
Your next step
What to do next
Recalculate the project using zero escalation and at least one declining-price scenario, then decide whether the resulting return meets your minimum requirement.
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