If you call us in August, the panels are usually producing before the rain sets in. Call in November and you are looking at a spring switch-on. That gap surprises people, because almost nobody explains what happens between signing and the day the system actually starts cutting your bill.
Here is the honest timeline for a home solar installation in SW Washington and NW Oregon, including the step most companies leave out of their sales pitch.
How long does solar installation actually take?
The install itself is two to three days on most homes. Everything else in the process is paperwork and scheduling, and that is where the weeks go. From signed contract to the day you are allowed to switch the system on, plan on six to ten weeks in a normal season.
The roof work is genuinely the short part. Crews are on and off a typical Camas or Vancouver house inside three days, and much of that is racking and wiring rather than panels.
What happens between signing and switch-on?
- Site survey and design, we measure the roof, check the framing from inside the attic, and look at the electrical panel. This is when a service upgrade gets discovered, not on installation day.
- Interconnection application, filed with your utility before anything is installed, with the equipment specifications and a site plan.
- Permitting, pulled from whichever jurisdiction reviews your address, which in this metro is not always the city on your mailing address.
- Installation, two to three days on site.
- Electrical inspection, scheduled by the permitting authority.
- Utility sign-off and meter work, theirs to schedule, not ours.
- Permission to operate, and only now does the system legally get switched on.
What is permission to operate, and why does it matter?
Permission to operate is your utility’s formal sign-off that the system can start exporting power. Until it arrives, a finished array sits on the roof switched off, and energising it early puts your interconnection agreement at risk.
This is the step that turns a “two-day install” into a two-month project, and it is the reason we quote timelines to the switch-on date rather than to the day the crew packs up. If a company gives you an install date and no permission-to-operate estimate, ask them for one.
Why does the season change the timeline?
Two reasons, and neither is about whether solar works in winter. It does. The first is weather: roof work in a Gorge windstorm or a January freeze gets rescheduled, and reschedules cascade. The second is the queue. Everyone who spent the summer thinking about it calls in September, so autumn is the busiest stretch of the year for installers, inspectors and utility crews alike.
A project that starts in late summer generally reaches switch-on before the wet season. One that starts in December is usually producing by spring, which is fine, but worth knowing before you sign.
Does installing in autumn mean losing a year of production?
No. Solar in the Pacific Northwest earns most of its output between April and October, so a system switched on in November has simply not started yet. It has not lost anything. Net metering settles over a full year, so what matters is being live and running before the following spring, not before this winter.
The genuine cost of waiting is a season of electricity bills you did not need to pay, not a lost year of sunlight.
What can you do to keep it moving?
Most of the critical path is ours to manage, but two things sit with you and both are worth doing early: get us into the attic and at the electrical panel during the survey rather than on installation day, and dig out twelve months of utility bills so the system is sized against real usage instead of an estimate.
After that it is our paperwork and the inspectors’ calendars. We file the interconnection application, pull the permits, meet the inspector, and chase the utility sign-off, and we tell you where the project actually is rather than leaving you to guess.
Why work with a local installer on the timeline?
Sunbridge Solar has been installing in this corner of the Northwest for over 15 years, we are verified by the Energy Trust of Oregon, and we know which jurisdiction reviews which address, including the enclaves and unincorporated pockets where the mailing address is misleading. Our installs are backed by a 10-year craftsmanship warranty and 25-year product warranties, and we handle the whole paperwork chain rather than handing you a permit packet.
Frequently asked questions
How long does solar take from signing to switch-on?
Plan on six to ten weeks in a normal season. The physical installation is only two to three days; the rest is the interconnection application, permitting, inspection, utility sign-off and permission to operate.
Can I turn my system on as soon as it is installed?
No. The array must stay off until your utility grants permission to operate. Switching it on early risks your interconnection agreement, and it is not worth the few days it might save.
Is it too late in the year to install solar before winter?
If you start in late summer, most projects reach switch-on before the wet season. Later starts usually go live in spring, which costs you a few months of bills rather than a year of production.
Does solar still work through a Pacific Northwest winter?
Yes, at reduced output. Systems here earn most of their production between April and October, and net metering settles annually, so winter production is part of the plan rather than a problem.
What is the first thing you need from me?
Roof and attic access during the site survey, plus twelve months of utility bills. Those two things prevent nearly every unpleasant surprise later in the process.
Ready to start before the rain?
Call 360-313-7190 for a free, no-pressure consultation, or request a quote online. We serve Camas, Washougal, Vancouver, Portland and the Columbia River Gorge.
