The Dual-Bill Cost Guide.
See how loan + utility stacks bleed cash while the system sits dark.
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Inside the guide
What the dual bill actually is
A financed system that under-produces does not remove the utility bill. You carry the loan payment and near-full retail power at the same time — two bills for one promise.
The three usual causes
Hardware sitting offline (inverter, gateway, or comms), a system undersized or shaded for the real load, and interconnection or net-metering paperwork that never finished.
What to document first
Twelve months of utility bills, the loan or lease agreement, the original production estimate, inverter or monitoring screenshots, and every installer contact attempt with dates.
How the bleed compounds
The monthly gap is only the visible part. Held across a 20-year finance term — with utility escalation on top — a modest monthly bleed becomes the single largest line item of the whole project.