Missed-call math for solar installers: long sales cycles, honestly counted
An unanswered call about a new system may not pay off for months, if ever. A worked example with labelled assumptions and the caveats left in.
Illustrative numbers. The figures here are example assumptions to show the arithmetic. They are not measured results. Replace them with your own call records.
Solar is a hard business to put a missed-call number on. A homeowner who calls about a new system is nowhere near signing. They are collecting information, usually from several companies, and the decision can take weeks or months. Most inquiries will never become a contract.
That does not make the call worthless. It makes the arithmetic different. Everything below is an example assumption, not a measured result. Use your own numbers.
Example assumptions
- 12 inbound calls a week from people asking about a new system.
- 25% go unanswered. That is 3 calls.
- 30% of those callers would have booked a consultation or site assessment if someone had answered. That is 0.9 consultations a week.
- 1 in 5 consultations ends in a signed contract.
- An example contract value of $25,000.
The arithmetic
0.9 consultations x 1 in 5 = 0.18 signed contracts a week. 0.18 x $25,000 = $4,500 of contract value a week. Over 50 weeks, that is $225,000 a year in contract value.
Read that number carefully. It is revenue, not profit. It arrives months after the call. It assumes the closing rate holds for callers who first reached voicemail, which may be generous, because callers who are comparing companies move on quickly.
A more cautious version: 0.9 consultations, 1 in 8 close, $20,000. That is about $2,250 a week.
The smaller calls count too
Not every call is about a new system. Some come from owners of existing systems: a monitoring app showing an offline system, an inverter message, a panel that needs checking. Those are smaller jobs and they are the ones that decide whether an existing customer stays happy with you.
A missed service call from an existing owner is a different kind of cost. The ticket is smaller, but the relationship is the asset.
What this leaves out
- Financing, permitting, design and installation costs, all of which come out of the contract value.
- Callers who were never serious, or who are outside your service area.
- Callers who would have phoned back. Some will, especially if they were referred.
- Anything about incentives. They vary by location and change over time, so we leave them out. Callers should ask your team or a tax professional.
What to measure instead
Track a few simple counts: calls that reached a person or an agent, consultations booked, consultations held, and contracts signed from each month's consultations. Over a few quarters, those four numbers will tell you more than any estimate here.
The practical goal of answering is modest. Put a consultation on the calendar while the caller is still interested, and let your sales process do the rest.