DIY solar vs professional install
Decisions built from Professional installed and DIY / kit — editorial analysis, no sales stake; each figure sourced or labeled in review.
The DIY discount is real — a kit can land under the national average. What the discount buys is your time, your warranty and a process of paperwork, and on two stories your roof.
At a glance: Professional installed vs DIY / kit
| Professional installed | DIY / kit | |
|---|---|---|
| Warranty risk | A licensed install keeps panel/inverter warranties | Manufacturers often void panel warranties on unlicensed installs |
| Permits & power | The upstream utility on record | You file, inspect, and own the rejection risk |
| Roof | Roof mounted with the vendor's system | You flash the penetrations and waterproof |
| $/W | $2.60 national est. vs quote | Potentially lower |
When Professional installed wins
- Grid interconnection: when your utility's approval is the last remaining link, the licensed installer's record is what keeps it real.
- Warranties actually work: the manufacturer's 25-year term expects a licensed install in many cases.
When DIY / kit wins
- A ground-mounted array on rural land with an electrician's license and time — but that's an estate, not a roof.
- If you are a licensed or genuinely experienced electrician, the DIY math is honest.
The honest verdict
The difference is what homeowners actually buy from an installer: the interconnection record, the warranty trail, and the roof. Your state's export-credit chip and the state guide are required reading before any route — priced in before the ($/W) fights begin. The DIY quote only wins if the paperwork route survives you.
Where these figures come from
Federal credit rules from the IRS (accessed 2026-08-08); market prices from EnergySage 2026; export rates per state records cited on each state page (CPUC NEM 3 for California); typical-home usage EIA 2023. Anything verified carries its date; the rest says "in review" until confirmed.