DIY & Planning
Solar System Components Checklist: What You Need Beyond Panels
Mar 23, 2026•8 min read
Panels are only one part of a safe and high-performing solar installation. You also need matched inverter, racking, wiring, disconnects, and safety devices.
| Component | Function | Grid-Tied Required | Off-Grid Required |
|---|---|---|---|
| Solar Panels | Generate DC power | Yes | Yes |
| Inverter | DC to AC conversion | Yes | Yes |
| Racking | Mechanical mounting | Yes | Yes |
| AC Disconnect | Safety isolation | Yes | Varies |
| Batteries | Energy storage | Optional | Commonly required |
BoM Checklist
- Panels and inverter matched electrically.
- Mounting hardware fits roof type.
- PV wire and connectors rated for outdoor use.
- Rapid shutdown and disconnects included.
- Monitoring device configured.
Common Mistakes
- Skipping quality roof flashing.
- Using non-PV wire outdoors.
- Ignoring modern rapid-shutdown code requirements.
Barre Wool Solar LLC can help you verify a complete and compatible equipment list before ordering.
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Office Address: 910 Boston Post Rd E, Marlborough, MA 01752
Owner: Michael J Staiti
Email Address: team@barrewoolsolarllc.com