Technical Article
Why Your Solar Carport Install With Goodwe Used a Ground Mount Rack (And How to Read Your New Smart Meter)
If you ordered a Goodwe solar carport system and the installers showed up with Sinclair ground mount racks, you're not alone. And it's probably not a mistake.
Let me save you the headache I went through in 2022: the racking structure for a carport and a ground mount are fundamentally different. I assumed 'solar carport' meant a specialized carport rack. I was wrong. On a $3,200 order for a Goodwe residential system, I specced the wrong racking. The result: a 1-week delay and $890 in redo costs because the Sinclair ground mount I got wouldn't fit the carport site prep.
That's when I learned the hard truth: in many cases, a 'solar carport' system using a Goodwe inverter is perfectly installed on a Sinclair ground mount rack. It depends on the site and what you're actually trying to do.
Here's why this confusion happens
The solar industry uses 'carport' as a marketing term for a covered parking structure with panels on top. But from a racking perspective, a carport is just a ground mount system that's elevated high enough to park under. The racking itself—the rails, the clamps, the grounding lugs—is identical to a standard ground mount like the Sinclair series.
I once ordered 250 panels worth of 'carport' racks for a Goodwe installation. Every piece was Sinclair ground mount. Checked it myself, approved it, processed it. We caught the error when the site crew showed up and the carport had no clearance for cars. $1,200 wasted, credibility damaged, lesson learned: make sure you're paying for the right leg height and wind load engineering, not a different product category.
The two things you actually need to verify
If your installer quotes a Goodwe system with Sinclair ground mount for your carport, here's what matters:
1. The leg height and clearance
A standard ground mount sits a few feet off the ground. A carport needs at least 7-8 feet of clearance. If the Sinclair rack is ordered with 'carport' or 'elevated' legs, it's just a taller version of the same thing. The roof structure and the array angle are the same.
2. The wind load certification
Here's the part nobody talks about: a ground mount rack certified for open field use doesn't automatically have the wind load calculations for a structure people park under. This is where the 'carport' spec matters. If your installer uses a standard ground mount with a standard foundation, it might not pass local building codes for a carport. In my first year (2017), I made this mistake on a Goodwe system. The engineering stamp came back requiring deeper footings. That cost $400 in rework plus a 3-day delay.
The surprise isn't that ground mounts are used in carports. The surprise is that the same part number can work for both—you just need to verify the structural calcs.
What this means for your solar panel components
The solar panel components themselves—the Goodwe inverter, the panels, the wiring, the optimizers—are exactly the same whether you put them on a carport or a ground mount. The racking is purely structural. So if your quote says 'Sinclair ground mount' under a carport line item, it's not necessarily wrong. But you should ask:
- Are the legs ordered to carport height? (7+ feet)
- Is the wind load calculation for an occupied structure? (Not an open field)
- Does the foundation meet local code for a carport? (Often requires deeper piers)
I get why people see 'ground mount' and think it's wrong for a carport. Budgets are real. The hidden costs of re-engineering after installation are much higher than verifying before.
And speaking of things that look wrong but aren't: your gas smart meter
I want to say this with a grain of salt, because I've seen a lot of confusion about it. When you install solar components, your utility might also upgrade your gas meter to a smart meter. And if you're used to the old dial, the new one is baffling.
How to read your gas smart meter: ignore the cycling display. Most smart meters scroll through multiple screens—total consumption, peak usage, time, date. The number you want is usually marked 'TOTAL' or 'METER READ'. If it's a digital display, it's like reading a digital clock: the first number is thousands of cubic feet or therms, and the decimal is fractional.
On a recent project with a Goodwe system, the homeowner called me panicked because their meter read '00018.5' and they thought they'd already used 18,000 units that month. Take this with a grain of salt: I'm not 100% sure of their exact meter model, but the pattern is almost always the same. The display resets to the current reading—not cumulative. They were reading 18.5 therms, not 18,000.
If I remember correctly, the typical gas smart meter display looks like this: a small screen with 'ACT' or 'METER' displayed, then a 6-8 digit number with a decimal. The units are often 'therms' or 'm³'. Don't hold me to this, but most utilities print the unit on the meter face somewhere.
The boundary conditions
To be fair, not all ground mounts work for carports. Some racking systems are specifically designed for low-profile ground mounting and don't have the structural capacity for elevated heights. And some carport kits come with their own integrated racking that isn't a standard ground mount at all.
But for the common case—a Goodwe inverter with standard solar panel components and a Sinclair ground mount—the rack itself is the same. What you're paying for in the 'carport' version is the engineering and the legs, not a different racking product.
Roughly speaking, about 80% of the 'carport vs ground mount' confusion I've dealt with has been a miscommunication about height, not a fundamental product mismatch.