Where solar installers buy
Solar installers buy panels, inverters and racking from solar distributors.
| Supplier | Type | What their own site says | Pro program |
|---|---|---|---|
| Greentech Renewables (formerly CED Greentech) | Distributor | Solar distribution with over 100 locations in major solar markets in the US. | Ask at the counter |
| Soligent | Distributor | Clean energy distribution since 1979. | Ask at the counter |
| Graybar | Distributor | Distributor of electrical, communications and data networking products, with a network of 350 locations across the United States, Canada and Puerto Rico. | Ask at the counter |
From each supplier's own site on the date in the sources; call your branch before you plan around it.
Your counter list
The items solar installers buy every week, from the van stock on our tools list. Ask each supplier for a price on these first; they decide which account saves you the most.
| Item | Why it is on the list |
|---|---|
| Flashing and sealant | Roof attachments |
| MC4 connectors and PV wire | Connections |
| Racking hardware and clamps | Installs |
| Conduit and fittings | Wire runs |
For the first order, price the starter kit too: personal fall arrest kit and roof anchors; extension ladder and a ladder hoist; multimeter; clamp meter; cordless drill, impact driver and torque wrench; rafter finder and chalk line; mc4 crimper and connector tools; insulated hand tools. Bigger purchases to price at a dealer or rental house: insulation resistance tester; iv curve tracer; material lift; conduit bender.
Opening a trade account
Bring your business name, tax ID and license number, and a credit application if you want terms. The big-box programs are compared row by row on Home Depot Pro vs Lowe's Pro. For the tools themselves, the solar tools list has prices read on the makers' own sites (Fluke).
When supplier prices change
Update your solar price list the same week a supplier raises prices. In Koira, that price list is what your estimates are built from.
Sources
- Greentech Renewables: About, checked October 9, 2026
- Soligent: About, checked October 9, 2026
- Graybar: About us, checked October 9, 2026
Last checked October 9, 2026. This page is general information, not legal or tax advice. Rules change and differ by state and city, so confirm with the agency named before you act.