How To Open A Home Solar Installation Service In 90 To 180 Days
You’re opening a residential solar installation service, so the launch plan has to prove you can sell, permit, install, inspect, and collect without stalling This guide covers the 90 to 180 day launch path, including licensing, suppliers, crews, permits, first customers, and first-revenue timing Use the financial model to test launch month staffing, project backlog, deposits, and cash runway before you book paid installs
Time to Open3-6 monthsLaunch runwayLaunch Sequence6 stagesCompliance firstKey BottleneckLicense gateState rulesFirst Revenue StepSigned contractSurvey then deposit
Launch timeline
Short web summary of the launch plan; the XLSX export holds the detailed Gantt Chart.
How long does it take to start a solar installation company?
Starting a Home Solar Installation Service usually takes 90 to 180 days, and the slowest steps are state licensing, insurance binders, supplier onboarding, financing partner approval, crew hiring, site surveys, permits, inspections, and utility permission to operate (PTO). The safest setup is to finish licensing and supplier access before paid sales, while you build the sales pipeline and design workflow in parallel. The biggest slippage risk is selling jobs before permits, equipment access, and inspection handoff are repeatable.
What slows launch
State licensing can block sales.
Insurance binders can delay start dates.
Supplier onboarding can stall equipment access.
Inspection and PTO add handoff time.
How to launch faster
Finish licensing before paid sales.
Set supplier terms early.
Run design and sales in parallel.
Use subcontractors or existing licenses.
What mistakes create the biggest solar company launch risks?
If a Home Solar Installation Service sells before licensing is confirmed or quotes jobs before supplier availability is locked, it can trigger failed inspections, delayed installs, cash gaps, and warranty exposure. The safe move is to confirm permits, site survey standards, supplier terms, rooftop safety, interconnection steps, and inspection prep before you scale.
Big launch mistakes
Do not sell before licensing is confirmed.
Do not quote without supplier availability.
Do not skip design review.
Do not hire crews without roof safety rules.
Readiness checks
Use permit templates before launch.
Set site survey standards early.
Lock interconnection and financing handoffs.
Grow from throughput, not just leads.
How do you get first customers for a solar installation business?
For a Home Solar Installation Service, first customers usually come from local SEO, referrals, roofing and real estate partners, and neighborhood targeting, not broad ads. With a $120,000 Year 1 marketing budget and $1,800 CAC, the model points to about 67 customers in year one, and the first revenue step is a signed homeowner contract with deposit or approved financing after the site survey. If permitting and crew capacity are not ready, lead volume won’t turn into revenue, so start with homeowner education, utility bill review, site qualification, financing options, and a clean quote-to-contract flow; see How Increase Home Solar Installation Service Profits?.
Lead sources
Use local SEO for nearby searches
Get referrals from roofers and realtors
Target one neighborhood at a time
Educate owners on utility bills
Close the sale
Qualify the roof and site first
Lead with financing options early
Close on contract and deposit
Match permits and crews to demand
Confirm the solar installation business checklist before selling jobs
Launch readiness checklist
Use this go-live approval checklist to confirm the home solar installation service is ready before opening.
1Compliance
Entity registeredCritical
You need a legal entity before contracts, loans, and tax setup move forward.
Electrical license verifiedCritical
Licensed electrical oversight is a launch blocker if it's missing.
Permit path confirmedCritical
Permits can slow installs, so the approval path must be clear.
Utility interconnect pathHigh
PTO and grid approval timing can delay first revenue.
Insurance boundCritical
Active coverage protects crews, vehicles, and customer work.
2Design
Site survey form readyHigh
Good surveys prevent bad designs, rework, and change orders.
Proposal pricing builtCritical
Prices must cover labor, equipment, overhead, and margin.
CRM pipeline testedHigh
Leads need a working flow from inquiry to booked site visit.
3Supply
Panel inventory securedCritical
The first installs depend on confirmed panel supply.
Inverter and battery termsHigh
Supplier terms should cover inverter and battery availability.
Racking and tooling orderedHigh
Racking and tools must arrive before the first install crew starts.
4Crew
Qualified supervisor assignedCritical
A named supervisor keeps code and field decisions consistent.
Crew trained on safetyCritical
Training should cover roof work, wiring, and site hazards.
Vehicles and ladders readyHigh
Crews need transport and access gear to start installs on time.
PPE and fall gear issuedCritical
Protective gear reduces injury risk and stops jobsite delays.
5Customer
Customer financing confirmedHigh
Financing options can make or break homeowner close rates.
Contract package approvedCritical
Contracts need scope, payment terms, and change-order language.
Inspection handoff mappedHigh
Clean handoff avoids delays after city inspection and utility review.
Warranty process readyMedium
Warranty steps must be clear before the first customer handoff.
6Finance
Cash runway covers month 4Critical
Minimum cash hits month 4, so early spend has to be controlled.
Model assumptions reviewedHigh
Revenue, CAC, and staffing assumptions need signoff before launch.
Launch signoff completeCritical
Final approval should confirm licensed, insured, supplied, staffed, and permitted.
Want the six launch drivers for a residential solar company?
1Licensing Compliance
License gate
State and local licensing must clear first, or deposits can create stop-work risk.
2Supplier Readiness
Lead times
Active distributor accounts keep quotes, substitutions, and warranty support aligned with installation timing.
3Permitting Workflow
90-180d
A repeatable permit and utility workflow keeps rooftop work from sitting idle after install.
4Crew Capacity
42 hrs
Trained crews and tools protect the 42-hour standard system from rushed work and callbacks.
5Sales Pipeline
$120K / $1.8K
A clean pipeline turns $120K marketing and $1,800 CAC into roughly 67 acquired customers.
6Cash Sequencing
$15.95K mo
Monthly fixed costs of $15,950, before wages, make cash-first sequencing essential.
Licensing And Compliance
Licensing First
Solar contractor licensing is the first gate because it decides whether you can legally sell, install, inspect, and finish residential systems. If the state, city, or county license is not verified before launch, you can collect demand but still miss your opening date because the work cannot start in a compliant way.
The launch risk is simple: taking deposits before legal install authority is clear can create refunds, delays, and stop-work problems. Readiness means confirmed state and local licensing, an electrical license or qualifying electrician where required, insurance in force, code process mapped, and permit authority contacts ready.
Verify Before Deposits
Before opening, close the compliance file in this order: license review, insurance binding, safety policy, contract review, and qualified supervision plan. That sequence keeps sales aligned with what the company can legally deliver on day one.
Confirm state and local license status.
Confirm electrician coverage where required.
Bind insurance before first contract.
Map permit and inspection contacts.
Document who supervises installs.
What this protects: fewer failed inspections, fewer stop-work issues, and safer launch scheduling. It also keeps first projects from getting stuck after the customer has already paid, which protects cash and the first wave of reviews.
1
Supplier, Equipment, And Financing Readiness
Supplier and Financing Setup
Open on time only if you can quote and source systems on day one. Active distributor accounts for panels, inverters, racking, batteries, and related hardware protect quote accuracy, install timing, and warranty support. If you sell before pricing sheets, lead times, and substitution rules are locked, you risk promising a system you cannot buy, which delays installs and hurts conversion.
This matters even more because Year 1 quotes need to handle 25 percent battery storage and 15 percent EV charging attach rates from the start. That means the first proposal set must include add-on pricing, warranty documents, and a clear financing approval workflow, or your sales team will keep stopping to rework deals.
Lock Vendor Terms Before Selling
Before launch, verify distributor pricing sheets, standard lead times, and approved substitutions for each core component. Build a short list of backup suppliers for batteries and inverters, then assign one owner to keep warranty documents and financing steps current. If financing approval takes too long, the sale can stall even when the roof is ready.
Use a simple readiness check: panel, inverter, racking, battery, EV charger, and financing all quoted and sourced before contract. The quick rule is this: if the team cannot price, order, and explain an add-on without guessing, the business is not ready to launch.
Confirm active accounts with each distributor.
Document lead times and substitutions.
Test financing approval from quote to close.
Include battery and EV add-ons in templates.
2
Permitting, Interconnection, And Inspection Workflow
Permitting, Interconnection, and Inspection
This workflow decides whether a job actually starts serving power on time. A solar install is not ready at the roof finish; it is ready at permission to operate, so the business needs a repeatable path from site survey to utility approval. If that path is shaky, finished systems sit idle and first revenue slips.
Plan the full chain: site survey, system design, engineering review, permit submission, residential solar interconnection, inspection scheduling, punch-list fixes, and homeowner handoff. Budget for permitting and interconnection fees at 2% of project cost. The main bottleneck is a complete rooftop job that still cannot operate because one approval is missing.
Lock the approval path
Before opening, assign one owner to each step and track it on one checklist. The workflow should show when the permit packet is complete, when the utility file is sent, and who clears inspection notes. That keeps launch scheduling clean and cuts avoidable homeowner delays.
Prebuild the permit packet.
Log utility contacts and rules.
Schedule inspection dates early.
Document punch-list fixes fast.
Use one handoff checklist.
Build the first-month schedule around approval timing, not just install dates. If inspection or utility approval slips, cash stays tied up after labor and materials are already spent. A clean handoff path means fewer status calls, fewer stalled jobs, and faster activation for the homeowner.
3
Crew, Safety, Tools, And Capacity
Crew, Safety, Tools, And Capacity
This driver sets day-one capacity. If the crew is not trained for rooftop work, electrical tasks, and safe installs, the business can’t open on time with confidence. For a standard home solar system, plan 42 billable hours; add 12 hours for battery storage and 6 hours for EV charging when sold. That means the calendar can fill fast if the crew is too small.
The launch risk is simple: oversell jobs and you miss dates, rush work and you fail inspections. Readiness means trained installers, electrical capability, rooftop safety steps, vehicles, ladders, racking tools, PPE, site supervision, and quality control. Safer installs usually mean fewer warranty callbacks and fewer surprises before first revenue.
Lock Capacity Before You Sell
Before opening, match the crew plan to the billable-hour load. One job may look simple, but batteries and EV charging add time, so the install calendar needs slack. Use a written checklist for tools, trucks, PPE, ladder safety, and final quality checks. If any of those are missing, day-one work slows down fast.
Verify trained installers and electrical coverage.
Stage ladders, racks, PPE, and tools.
Set site supervision and QC signoff.
Cap jobs to real crew hours.
Protect time for inspection fixes.
One clean rule helps here: do not promise more installs than the crew can safely finish in the week. That keeps launch dates real, reduces rushed work, and protects the first projects from preventable rework.
4
Sales Pipeline And Quote-To-Contract Readiness
Quote-to-Contract Readiness
Sales has to create qualified demand without clogging the install queue. For a residential solar installer, the pipeline must screen homeowners, analyze utility bills, qualify the site, and move cleanly to a signed contract before the first marketing dollar goes out. If that flow is loose, you get bad quotes, slow closings, and crews waiting on jobs that should never have been sold.
Here’s the quick math: $120,000 of marketing spend at $1,800 CAC implies about 67 acquired customers if conversion holds. That only works if proposal templates, financing options, CRM stages, and contract steps are ready on day one. No clean pipeline, no clean backlog.
Build the gate before you buy leads
Before launch, verify the full quote path: homeowner targeting, consultation script, utility bill review, site qualification, financing pre-check, and signed contract workflow. Put every step in the CRM so sales can’t skip ahead and sell a roof before the finance or permit screen is done. That protects opening dates and keeps first jobs usable.
Test the handoff with 5 to 10 mock leads before spending the full budget. Confirm who approves quotes, who books site checks, and which fields are required before a proposal goes out. If those steps aren’t documented, paid leads will stack up faster than operations can clear them.
5
Cash-Flow-Backed Project Sequencing
Cash-Flow Sequencing
This matters because solar jobs can look “ready” on sales, but still drain cash if equipment and labor go out before deposits and milestone payments come in. With $15,950 in monthly fixed costs before wages, launch timing has to protect runway from day one.
Here’s the quick math: if variable costs run 18% equipment, 5% contractor support, 4% commissions, and 2% permitting and interconnection fees, then 29% of revenue leaves fast before wages and overhead. If install starts are scheduled ahead of cash collection, backlog grows faster than cash, and opening slips.
Build the job sequence around cash dates
Map each project from deposit to milestone payment, then match that to supplier terms, crew hours, permit timing, and interconnection delays. A job should not enter the field unless cash, parts, and labor are aligned. That keeps the first month from becoming a funding gap.
Track deposit timing by contract.
Match orders to supplier terms.
Hold starts for permit delay risk.
Load crews only after cash clears.
Cap backlog to runway limits.
If a project needs early equipment buy-in, the model should show where that cash comes from before launch. Otherwise, the company may be “busy” but still short on cash when the crew is on site and the utility has not yet approved the system.
