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Microinverter and String Proposal Comparison

Compare two actual inverter proposals using quoted costs, modeled annual energy, self-use and realizable export value; show the incremental cost and benefit.

Use this result well

Inputs that matter
Whole-system proposals, Comparison horizon (whole years), Sources and assumptions
Output to expect
Compare actual inverter-system proposals
  • Check the units and required inputs before comparing results.
  • Keep the assumptions with a copied result so you can reproduce the calculation later.
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Reference & details

How it works

Compare actual inverter-system proposals

Compare two whole-system proposals using their quoted costs, same-period modeled generation, self-use share, export value and recurring costs. Keep weather, capacity and tariff assumptions comparable.

Annual energy value = generation × [self-use fraction × avoided-import rate + export fraction × export rate × realizable credit fraction]; annual net = energy value − recurring costs.

Updated: September 2026

Example Scenarios

Try this example to see the calculation, then enter actual documented values and preserve the measurement conditions. A failed or unresolved comparison is part of the record.

→ String proposal: $367.50 higher net benefit

FAQ

Compare two whole-system proposals using their quoted costs, same-period modeled generation, self-use share, export value and recurring costs. Keep weather, capacity and tariff assumptions comparable.

Use the exact equipment data, measurement point, operating conditions and units described in the selected mode. Record source documents, dates and unresolved conditions in Sources and assumptions. Built-in examples illustrate arithmetic; they are not manufacturer ratings or approved designs.

Use Save planning case for an explicit local history entry. Copy MD keeps current inputs and notes; Download CSV exports the result breakdown. Export portable copies before clearing storage and save a separate case after changing equipment, conditions or measurements.

About Microinverter and String Proposal Comparison

Compare two whole-system proposals using their quoted costs, same-period modeled generation, self-use share, export value and recurring costs. Keep weather, capacity and tariff assumptions comparable.