How do I keep panel serial numbers with the cost records?

Record the equipment purchase and attach the packing slip and serial-number sheet to it, so the serials needed for warranty and interconnection stay with the install's cost.

Can I keep permit fees with the equipment costs?

Yes. Record each AHJ permit and inspection fee in the same install folder with the permit and approval documents attached, beside the equipment receipts.

Can I review what an install cost against what I billed?

Keep the client invoice and its status in the install folder beside the cost records. They sit side by side for your own review — Cash Workspace organizes them but does not compute profit or margin.

Cash Workspace

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Trade finance · Solar install costs

Keep a job cost folder for every solar install

A residential rooftop array pulls panels, an inverter, racking, and conductors — each with a serial number that has to survive to the warranty claim and the utility interconnection — plus permit fees, inspection fees, and an electrical sub's invoice. When the equipment packing slips, the AHJ permit, and the sub invoice scatter, you can't assemble the install's real cost beside what you billed. Cash Workspace gives you one folder per install where equipment receipts, serial-number documents, permit records, and subcontractor invoices sit next to the client billing.

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The problem

Why solar install costs scatter

A solar job mixes high-value equipment, multiple government fees, and subcontracted electrical work. Without one folder per install, the pieces never come back together.

Panel and inverter serial numbers live on packing slips that get separated from the cost records.
Permit fees and inspection fees are paid to the AHJ but never filed with the job.
The electrical subcontractor's invoice arrives weeks later with no home in the install folder.
Racking, conductors, and balance-of-system parts get bought loose and lose their link to the array.
When a warranty claim comes up, the serial-number documents can't be found against the install.

The workflow

Build one cost folder per install

Keep equipment, serials, permits, and sub invoices together, beside the client billing for the same install.

1
Open an install folder
Name it by site and system — 'Rooftop 8.4kW, 12 Pine St' — so all costs and documents collect there.
2
Record equipment with serials
Log panels, inverter, optimizers, and racking with vendor and amount, and attach the packing slip and serial-number document.
3
File permit and inspection fees
Record AHJ permit fees, plan-review fees, and inspection fees with the permit and approval documents attached.
4
Add subcontractor invoices
Record the electrical sub's invoice against the install when it arrives, with the invoice attached.
5
Keep client billing beside it
Record the client invoice and its status in the same folder so cost records and what you billed sit side by side for review.

Record structure

What to record for each install

These fields keep a high-value, multi-party install fully reconstructable later.

Install / site: The address and system size, used as the tag that gathers all costs and documents.
Equipment item: Panels, inverter, optimizers, racking, conductors, or balance-of-system parts.
Serial numbers: Recorded or attached from the packing slip, for warranty and interconnection.
Vendor / distributor: Where the equipment was purchased.
Fee type: Permit fee, plan-review fee, or inspection fee paid to the AHJ or utility.
Subcontractor: The electrical or other sub whose invoice is recorded against the install.
Amount: What each equipment buy, fee, or invoice cost.
Attached documents: Packing slips, serial-number sheets, permits, inspection approvals, and sub invoices.
Client billing: The client invoice and its status, kept in the same folder for review.

Example setup

An example install cost folder

One way to organize a residential rooftop install.

Rooftop 8.4kW — 12 Pine St

Panels, inverter, optimizers, and racking recorded with vendor and amount, packing slips attached.

Serial-number documents

Panel and inverter serial sheets attached for warranty and interconnection.

Permits & inspections

AHJ permit fee, plan-review fee, and inspection-approval documents recorded and attached.

Subcontractor & billing

The electrical sub's invoice and the client invoice with its status, kept side by side.

Common mistakes

Mistakes to avoid

Filing panels and inverters without recording or attaching their serial numbers.
Paying permit and inspection fees without filing them with the install.
Letting the electrical sub's invoice live in email instead of the install folder.
Buying racking and conductors loose so they lose their link to the array.
Keeping cost records and client billing so far apart you can't review them together.

How it helps

How Cash Workspace helps

One folder per install

Collect equipment, fees, sub invoices, and documents for a job in one place by site.

Serials with the equipment

Attach packing slips and serial-number sheets so warranty and interconnection records stay with the cost.

Permits and fees filed

Record each AHJ and utility fee with its permit or approval document attached.

Cost beside billing

Keep the client invoice and its status in the same folder so you can review what an install cost against what you billed.

Permit & inspection fees

Organize permit and inspection fee records per job.

Subcontractor invoices

Keep sub invoices attached to the right install.

Job folder structure

A consistent folder setup for every install.

Client invoice status

Track what you billed and whether it's paid.

All finance workflows

Browse the full Cash Workspace workflow library.

FAQ

Solar install records FAQ

How do I keep panel serial numbers with the cost records?: Record the equipment purchase and attach the packing slip and serial-number sheet to it, so the serials needed for warranty and interconnection stay with the install's cost.
Can I keep permit fees with the equipment costs?: Yes. Record each AHJ permit and inspection fee in the same install folder with the permit and approval documents attached, beside the equipment receipts.
Can I review what an install cost against what I billed?: Keep the client invoice and its status in the install folder beside the cost records. They sit side by side for your own review — Cash Workspace organizes them but does not compute profit or margin.

Organizing help — not tax, accounting, or legal guidance

Cash Workspace is a free workspace for organizing invoices, expenses, receipts, clients, and documents. This page is organizing guidance only — not tax, accounting, legal, or bookkeeping guidance. Cash Workspace does not connect to your bank, does not scan or read your receipts for you, and does not move or collect payments. Whether an expense is deductible depends on your situation, so confirm it with a qualified accountant or tax professional.

Keep every install's costs and serials together

Start a free workspace and build a folder per install holding equipment receipts, serial documents, permit fees, and sub invoices beside the client billing.