Accounting Built For Solar’s Cash Flow.
Solar accounting services for installers and EPCs, including bookkeeping, job costing, progress billing, rebate timing, and financial reporting built around the capital-heavy pace of solar projects.
Built for how solar projects actually get paid.
Job costing is the baseline. Here’s what comes with it.
Monthly Bookkeeping
Full reconciliations across every account, every month, in QuickBooks Online — no backlog, no guesswork.
Project & Install Costing
Track equipment, permitting, labor, and install costs by project — so you know true margin per system, not just top-line revenue.
Progress Billing & Draws
Invoicing tied to install milestones, so cash comes in as the work gets done — not weeks behind it.
Rebate & Incentive Tracking
Keep tax credits, utility rebates, and financing draws straight, so nothing gets lost between approval and payout.
Solar Installer Bookkeeping Checklist
Whether you're setting up QuickBooks for the first time or reviewing your current process, these are the basics every solar installer's books should have in place.
- Job costing set up per install, not just by month
- Equipment and materials tracked by project, not lumped into one expense category
- Progress billing or draw schedule tied to actual install milestones
- Rebate and tax credit timing tracked separately from project revenue
- Financing type (cash, loan, lease/PPA) recorded by job
- Dealer fees recorded as a cost of financing, not buried in revenue
- Monthly reconciliation of all bank and credit card accounts
- Estimated vs. actual cost comparison reviewed after each install
- Cash-flow visibility into the gap between install completion and payment collection
- Clear chart of accounts separating labor, equipment, permitting, and overhead
Follow the money through every installation.
Solar projects rarely have perfectly matched cash inflows and outflows. Equipment, labor, subcontractors, permitting, and other costs may be paid well before the final customer payment is collected. AmpleX Consultants helps connect those costs to the projects generating them.
Profitable project. Tight cash.
A solar project can be profitable on paper while still creating short-term cash pressure. Equipment may need to be purchased, crews paid, subcontractors funded, and permits covered before all customer payments are received. For a side-by-side example of how this plays out, see project margin vs. cash flow.
Timing Matters.
Cash Out
- Equipment
- Materials
- Payroll
- Subcontractors
- Permitting
Cash In
- Deposits
- Progress Payments
- Final Payments
- Applicable Incentive/Rebate Receipts
Solar projects may involve incentives, rebates, credits, or other program-related amounts that affect project accounting or cash timing. AmpleX Consultants can help keep applicable amounts organized and properly reflected in the accounting records based on the scope of the engagement.
Revenue doesn't tell you whether an install made money.
Company-wide financial statements can show whether the business is profitable overall. Project-level accounting helps show which installations are actually producing the margins you expected.
Did the project hit its expected margin?
Were equipment costs higher than estimated?
Did labor hours run over budget?
Did subcontractor costs change?
Where did we gain or lose margin?
The estimate is only the beginning.
Tracking estimated costs against actual project costs helps identify where margins are changing — while there is still time to improve future pricing and operations.
More installs can create more financial pressure.
Growth in a solar business often requires spending money before collecting it. More projects can mean more equipment purchases, larger payroll, additional crews, subcontractor costs, vehicles, and working-capital needs.
How much cash do upcoming installs require?
When will customer payments arrive?
How many projects can we fund at once?
Accurate project accounting and cash-flow visibility can help leadership understand how growth affects the company's financial position.
Explore Fractional CFO & Controller Services →Solar installers who’ve outgrown spreadsheets.
Built for residential and commercial solar installers and EPCs doing $1M–$10M in revenue — where financing draws, rebate timing, and equipment costs make cash flow hard to track by hand.
Project Costs Are Spread Across Systems
Equipment, payroll, subcontractors, credit cards, and other project costs aren't consistently tied back to individual installations.
You Know Revenue — But Not Project Margin
Sales are growing, but it is difficult to determine which installs are producing the expected profit.
Cash Gets Tight Between Install and Payment
Costs are being paid before customer payments or other expected project receipts arrive.
Estimates and Actual Costs Don't Match
Projects look profitable when sold, but actual labor, equipment, or subcontractor costs are reducing margin.
The Spreadsheet Has Become the Accounting System
Critical project information lives outside the books, creating duplicated work and making reporting harder to trust.
Growth Is Getting Harder to Fund
The pipeline looks strong, but leadership needs better visibility into how much working capital upcoming projects will require.
Also Doing General Contracting?
Explore Contractor Accounting →Ready to Go Beyond Bookkeeping?
Explore Fractional CFO & Controller →Have an Install Crew on Payroll?
Explore Payroll →Estimated vs. Actual Margin: A Worked Example
The figures below are an illustrative example, not results from an actual AmpleX Consultants client. They show how a residential install's margin can shrink between the original estimate and the completed job.
| Line Item | Estimated at Sale | Actual at Completion |
|---|---|---|
| Contract Value | $42,000 | $42,000 |
| Equipment & Materials | $19,500 | $21,200 |
| Labor & Install | $6,500 | $7,800 |
| Permitting, Inspection & Other | $1,200 | $1,450 |
| Gross Margin ($) | $14,800 | $11,550 |
| Gross Margin (%) | 35.2% | 27.5% |
In this illustrative example, the sale was estimated at a 35% margin. By completion, equipment price changes, a longer install day, and a permitting delay pulled actual margin down to about 27%. Neither number is wrong — they're measuring different points in time. The gap between them is what estimated-vs-actual tracking is built to catch, project by project, so pricing and vendor decisions can adjust before the pattern repeats across the next ten installs.
Accounting for Solar Financing and Dealer Fees
How a customer pays for their system — cash, loan, or lease/PPA — changes what hits your books and when. Getting this wrong is a common source of overstated revenue and cash-flow surprises.
Dealer Fees Reduce What You Actually Collect
When a customer finances through a third-party lender, the lender typically deducts a dealer fee before advancing funds to you. The contract may say $42,000, but the cash that actually lands in your account is lower. That fee needs to be recorded as a cost of financing, not left to quietly shrink your reported margin without explanation.
Financing Proceeds Don't Always Arrive on Your Timeline
Loan and lease/PPA proceeds are often released in stages tied to milestones — permission to operate, inspection sign-off, or utility approval — not the day the install is finished. A completed job can sit as earned, uncollected revenue for weeks while you've already paid for equipment and labor.
Cash Purchases, Loans, and Leases/PPAs Aren't Interchangeable in the Books
Each financing path can affect the timing of revenue recognition and collections differently. Tracking financing type by job makes it possible to see which payment structures are creating the most cash-flow drag — not just which ones close the most sales.
Solar Accounting Questions
What is solar accounting?
Solar accounting applies bookkeeping and financial reporting to the specific needs of solar businesses, including project costing, equipment and material costs, labor, subcontractors, billing, cash flow, and project profitability.
Can AmpleX Consultants track costs by solar project?
Yes. Project-level accounting can be used to track applicable equipment, materials, labor, subcontractor, permitting, and other direct costs by installation.
Can you help us understand profit by installation?
Yes. Accurate project costing can provide better visibility into revenue, direct costs, gross profit, and margin by project.
Can you compare estimated costs to actual project costs?
Yes. Depending on the accounting setup and scope of the engagement, project reporting can help compare estimated or budgeted costs with actual results.
Can AmpleX Consultants help with solar payroll?
Yes. AmpleX Consultants provides payroll services that can be coordinated with accounting and project costing.
Can you help with cash-flow forecasting?
Yes. AmpleX Consultants provides Fractional CFO and Controller services that can include cash-flow forecasting, budgeting, and financial planning.
Do you work with QuickBooks Online?
Yes. AmpleX Consultants primarily works with QuickBooks Online for many accounting engagements.
Can you clean up our existing solar accounting?
Yes. AmpleX Consultants can review existing accounting and project-costing records and scope cleanup work when historical records need correction or restructuring.
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