Solar Panel Manufacturing Break Even: $236K Monthly Revenue

Fixed costs $183K/mo Salaries + overhead

Contribution margin 88% After variable spend

Break-even revenue $208K/mo Monthly sales needed

Break-even timing Month 2 Model break-even point

Break-even calculator

Test whether monthly revenue clears variable expenses and fixed costs before you hit break-even.

Lean Base Full

Monthly revenue Revenue is the pool that covers direct cost and overhead. $ Lower sales Higher sales Variable expenses These are direct costs that rise with output, like materials, labor, shipping, and commissions. $ Lower direct cost Higher direct cost

Money available to cover fixed costs $868,595 $972,667 revenue - $104,072 variable expenses

Margin ratio

89%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead contribution margin has to cover. $ Lower overhead Higher overhead

Break-even chart Revenue Total costs

Which solar panel manufacturing expenses are fixed, and which move with sales volume?

Cost classification

Break-even gets unreliable when monthly overhead gets mixed with unit-driven spend. Treat materials and direct labor as Variable, keep stable overhead Fixed, and flag utility or staffing steps before calculating required panel volume.

Expense	Cost	Break-Even Treatment	Common Mistake
Polysilicon Wafer	Variable	Apply the per-unit material amount to each panel produced.	Treating wafer spend as monthly overhead.
Glass & Frame	Variable	Include the per-unit amount in unit contribution margin.	Using one blended factory rate for all panel sizes.
Direct Labor Assembly	Variable	Scale the per-unit assembly amount with production volume.	Putting assembly labor into fixed payroll.
Factory Rent	Fixed	Use the $50,000 monthly amount as recurring overhead.	Spreading rent per panel and hiding idle-capacity risk.
Facility Utilities Fixed	Fixed	Use the $15,000 monthly amount as base facility overhead.	Combining it with usage-driven factory utilities.
Factory Utilities	Semi-variable	Model it as revenue-linked factory usage in break-even.	Assuming all power and plant usage is fixed.
Quality Control	Semi-variable	Scale inspection burden with output using the model percentage.	Ignoring higher testing load as units rise.
Production Supervisors	Semi-fixed	Add supervisor expense in staffing steps as FTE rises.	Smoothing headcount as if it changes one unit at a time.

How does break-even change as solar output moves from lean to base to full scale?

Scenario table

Lean is already above break-even, but the cushion is still tight because fixed payroll and plant costs stay heavy. As volume scales, the contribution margin rises from 77.4% to 79.4%, so each extra dollar of sales covers more overhead.

Planning assumptions only; actual mix, yield, pricing, and factory efficiency can move these results.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean Year 1 mix	$466,667	$105,467	$182,833	77.4%	$178,367	Above break-even, but slack is still thin.
Base Year 3 mix	$972,667	$211,101	$200,333	78.3%	$561,233	Better cushion; higher volume absorbs payroll growth.
Full Year 5 mix	$1,445,000	$297,670	$213,667	79.4%	$933,663	Strongest cushion; utilization offsets fixed-cost growth.

What pushes a solar panel plant off break-even?

Stress test

Year 1 starts with a strong cushion at $466,667 monthly revenue against $182,833 of fixed costs, but the plan is exposed to price cuts, material inflation, weak order flow, higher utilities, and yield loss. A 10% revenue drop or a 15% fixed-cost rise trims that buffer fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$236,219	$230,448 cushion	Healthy cushion, but the buffer can shrink quickly.
Revenue shortfall	Monthly revenue falls 10% to $420,000.	$236,219	$183,781 cushion	Still above break-even, but monthly operating profit drops to about $142,000.
Fixed-cost pressure	Fixed costs rise 15% to about $210,300 a month.	$271,700	$194,967 cushion	Overhead growth eats about $35k of cushion.
Margin pressure	Contribution margin falls 5 points to 72.4%.	$252,500	$214,167 cushion	Small price or yield erosion lifts break-even fast.
Combined pressure	Revenue falls 10%, fixed costs rise 15%, and margin drops 5 points.	$290,500	$129,500 cushion	Two hits at once cut the buffer to about $130,000.

What should you verify before signing the plant lease and ordering the first production line?

Founder checklist

Do not lock the lease, line, or inventory until the plant can hit operating break-even with real orders and a funded cash cushion. The model points to about $236,000 a month in revenue, and the cash low still lands around $11.2 million in Month 12.

1Order pipeline$236K/mo

Verify the order pipeline can support at least $236,000 in monthly revenue before you lock the lease, because that is the operating break-even line.

2Fixed load$92K/mo

Verify the site can carry $50,000 of monthly rent plus the utility load behind the $15,000 fixed utility line before you lock payroll.

3Contribution margin78% CM

Verify the mix still clears about a 78% contribution margin after wafers, glass, assembly labor, commissions, and shipping, because a small price miss cuts cash fast.

4Install path$8.0M

Verify the $5.0 million build-out and $3.0 million automated line can be installed with quality control systems and testing equipment live, then release the $1.0 million raw material buy for wafers, glass, frames, film, backsheets, junction boxes, and cables.

5Payroll ramp$1.09M

Verify the hiring plan can stage to the first-year payroll of $1.09 million, with Marketing Manager at 0.5 FTE and Production Supervisors at 2.0 FTE in Year 1.

6Cash trough($11.2M)

Verify you have funding for the Month 12 cash low, because the model bottoms at about $11.2 million negative even with Year 1 EBITDA of $1.972 million.