The crew leaves, the utility gives permission to operate, and the system starts running. For most homeowners that is the end of the project. It should be the start of about twelve months of light, occasional attention, because the first year is when problems are both most likely to appear and easiest to get fixed under someone else’s obligation.
None of this requires climbing on the roof. It requires opening an app now and then and knowing what you are looking at.
Set the monitoring up properly on day one
Your inverter is also your data source. Besides converting the array’s output into the kind of electricity your house uses, a household inverter typically monitors the system and reports to an app or a web portal. That portal is where every number you will ever cite in a warranty claim comes from.
Before the installer drives away, make sure of five things:
- The monitoring account is registered in your name and email, not the installer’s.
- You have the login and you have logged in successfully at least once.
- You know how the monitoring hardware connects to the internet, whether by wifi, ethernet or a cellular module, and what happens if you change internet providers.
- You know whether the system reports per string or per panel.
- You know how long any monitoring subscription is included and what happens when it ends.
This sounds administrative because it is. It is also the single most common thing homeowners fail to sort out, and the reason people discover three years later that their production history lives in an account nobody can access.
What to look at in the first weeks
You are not auditing anything yet. You are establishing what normal looks like.
Does the shape of a clear day make sense? Production should rise through the morning, peak around the middle of the day, and fall off. A curve with an odd notch in it at the same time each day usually means a shadow from something: a vent, a chimney, a neighbor’s tree.
Are all the panels or strings reporting? If your system reports per panel, one module sitting at zero while its neighbors work is worth a message to the installer immediately, not eventually.
Does the system come back after an outage? Grid-tied inverters shut down when the grid goes away and restart on their own once it returns. If yours does not restart, that is a service call.
Take photographs. Dated pictures of the array and roof from the ground shortly after commissioning are the most useful baseline evidence you will ever collect. They take five minutes and they settle arguments later.
Watch the first full seasonal cycle
An Indiana year gives a system four fairly distinct operating environments, and the first pass through them is educational.
Output falls in winter for reasons that are entirely expected: shorter days, a lower sun angle, and snow sitting on the modules until it slides or melts. It tends not to fall as far as people assume on cold clear days, which surprises homeowners who expect the system to behave like a sun-tan.
Summer brings long days and haze. Spring and fall bring pollen and dust. None of that is a fault. The point of watching a full cycle is that you end the year able to tell the difference between seasonal variation and something actually going wrong.
The threshold worth remembering
Once you have a year of data, you have something to compare against. The U.S. Department of Energy’s guidance for anyone assessing an existing solar system gives a usable rule of thumb: “If the data shows a drop in energy production higher than 10% from year to year, that could indicate maintenance issues.” It also advises getting the monitoring login and asking for historical production data, which is a good reminder that your records have a resale value as well as a diagnostic one.
Treat that threshold as a trigger for a question, not a verdict. A weaker year could be weather. It could be a panel that stopped reporting in March and nobody noticed. The value of the number is that it gives you a reason to look.
Why the split matters in Indiana
There is a state-specific reason to pay attention to your data rather than just your total. Indiana’s rules for net metering and distributed generation sit under Indiana Code chapter 8-1-40, enacted as Senate Enrolled Act 309, and the Indiana Utility Regulatory Commission maintains a resource page collecting its guidance and each utility’s interconnection and net metering documents.
The practical consequence for a homeowner is that electricity you use yourself and electricity you export are not treated identically, so the split between the two is a number worth being able to see rather than infer. Our page on net metering and excess distributed generation in Indiana covers how that works. Once you understand it, first-year monitoring stops being a hobby and starts being useful: it tells you whether running the dishwasher at two in the afternoon instead of ten at night actually changes anything for your household.
Read your first few bills carefully
The bill and the app do not always agree, and the reason is usually that they are measuring different things over different periods. Check:
- That the billing arrangement your utility applied is the one you expected.
- How the bill presents what you delivered to the grid.
- Whether the billing period lines up with the calendar month your app is showing.
- Whether any credit carries forward and how it is displayed.
Discrepancies in the first cycle or two are common and usually administrative. Raise them early with the utility rather than assuming the system is at fault.
The end-of-year checklist
- Confirm the monitoring account is still in your name and still reporting.
- Export or screenshot a full year of production data and file it with your project paperwork.
- Check the workmanship warranty term. If it is short, note the expiry date somewhere you will see it.
- Ask the installer whether anything about the first year’s data looks unexpected to them, in writing.
- Inspect what you can see safely from the ground: sagging conduit, staining around penetrations, debris caught under the array.
- If you had roof work, storms or tree removal during the year, note the dates against the production record.
Our list of questions to ask a solar installer in Indiana covers what to establish before any of this, and the installation walkthrough covers the handover step where the monitoring account should have been set up in the first place.
Where this fits
A first year of decent records makes every later conversation easier: a warranty claim, a service visit, an insurance question, a sale. A first year of no records makes all of them harder, and there is no way to go back and collect the data afterward.
If you are still deciding, our page on whether solar makes sense for an Indiana home covers the upstream questions, and homeowners around Fort Wayne will see the same seasonal pattern described above.
When you want to see which participating providers cover your address, you can see what options are available for your home. Matching depends on service area, availability varies, and you decide whether to move forward from there.
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