Path-Q Solar

What financial risk do I take if promised solar savings depend on optimistic electricity-price growth?

Answer

You risk paying more for a system than the savings can justify if electricity prices grow slowly, remain flat, or if tariff changes reduce the value of solar exports. The risk is greatest when the proposal's payback or loan affordability depends on high price growth rather than on savings at today's rates.

Key points

  • Separate savings from on-site consumption and exported energy.
  • Test zero-growth, low-growth, and alternative-rate-structure scenarios.
  • Check whether the proposed price escalation is supported by a transparent source rather than a sales assumption.
  • Compare results using current rates without assuming every bill component rises with energy prices.

What it depends on

  • Current utility rate structure
  • Export compensation and tariff rules
  • Production and self-consumption
  • System cost and financing
  • Price-growth assumptions

Risks and trade-offs

  • High growth assumptions can materially shorten projected payback.
  • A project may still save money under flat prices, but less than advertised.
  • Rate redesign or reduced export value can create additional downside.

Information you may need

  • Proposal price-growth assumptions
  • Recent bills and tariff documents
  • Export terms
  • Sensitivity analysis at conservative price growth

Your next step

What to do next

Recalculate the proposal using current prices and a zero-growth case, then decide whether the remaining savings justify the investment without optimistic escalation.

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SQ00305