The complete budget breakdown. Learn exactly how much to spend on leads based on your close rate, deal size, and profit margins.
One of the most common questions solar contractors ask is: "How much should I actually be spending on lead generation?" The answer isn't one-size-fits-all—it depends on your close rate, average deal value, and profit margins.
In this guide, we'll break down the exact numbers so you can build a profitable solar lead generation budget that scales your business without breaking the bank.
Before you can budget for leads, you need to know what a solar installation is worth to your business. Here's what top solar contractors are working with in 2026:
Average System Price
Gross Profit Margin
Net Profit per Install
With $5,000-7,000 in profit per installation, solar contractors can afford to spend significantly more on lead generation than most other home service industries—IF the leads are quality.
Cost Per Acquisition (CPA) is the total amount you spend to acquire one customer. For solar, this is one of the most important metrics to track.
| Performance Tier | CPA Range | What This Means |
|---|---|---|
| Elite Performer | $200-400 | Excellent ROI |
| Above Average | $400-700 | Good ROI |
| Industry Average | $700-1,000 | Break-even |
| Below Average | $1,000-1,500 | Low margin |
| Struggling | $1,500+ | Losing money |
Top solar contractors target a CPA under $700, which leaves $4,300+ in profit per sale. This 6:1 ratio (profit to ad spend) is the gold standard for sustainable growth.
Not all lead sources are created equal. Here's the breakdown of how much solar leads cost by channel in 2026:
High intent, highly competitive
per lead
Direct outreach, labor intensive
per lead (labor cost)
Word-of-mouth, customer advocates
per lead (incentives)
Sun Stream Leads and similar services
per lead
Here's the formula to calculate exactly how much you can afford to spend per lead:
Max Cost Per Lead = Avg Sale × Close Rate - Target Profit
Or simply: Target CPA = Profit per Sale × Target ROI
Rule of Thumb: Never spend more than 10% of your average sale on a lead. With a $20K average, that means $2,000 max CPA—or $100-200 per lead at a 20% close rate.
These budget mistakes cost solar contractors thousands every year. Here's how to avoid them:
Buying $15 shared leads seems cheap—until you realize you close at 3% vs 25% with exclusive leads. That "cheap" lead actually costs $500+ per sale.
Spending $5,000 on leads but $0 on CRM and sales training. You lose 60% of leads to poor follow-up, not bad leads.
Not tracking which lead sources actually close. You could be overpaying for leads that never convert and underfunding what's working.
"I'll spend whatever it takes" leads to feast or famine. You need a sustainable monthly budget that you can maintain 12 months a year.
When you buy solar leads from Sun Stream Leads, you know exactly what you're getting—and exactly what it will cost. Here's why our contractors hit their ROI targets:
$35-65 per exclusive lead. No hidden fees, no surprises. Budget with confidence.
Pre-screened homeowners with verified interest, budget, and timeline.
25%+ close rate on exclusive leads vs 3-5% on shared leads.
Every lead includes documented consent. No compliance risks.
The Sun Stream Leads Difference
With exclusive leads at $50/lead and a 25% close rate, your CPA is just $200—leaving $5,800+ in profit per $20K installation. That's a 29:1 return.
Don't guess when it comes to your lead generation budget. Get exclusive, pre-qualified solar leads that make the math work in your favor.
See our exclusive solar lead pricing and start scaling your business with predictable ROI.
See Our Exclusive Solar Lead PricingFree consultation • Custom quotes • No obligation