CPUC Supplier Clearinghouse Certification: Process & What to Expect

1. What Is the Supplier Clearinghouse?

The Supplier Clearinghouse is a CPUC-supervised nonprofit that certifies diverse businesses so they can be counted toward the supplier diversity goals that California's regulated utilities report under General Order 156. More than 30 investor-owned utilities, community choice aggregators, and telecoms participate — including PG&E, Southern California Edison, SoCalGas, SDG&E, AT&T, Comcast, and Frontier. If a company wants its supplier-diversity spend with your firm to count toward those goals, it will typically ask for Supplier Clearinghouse certification specifically — a WBENC or NMSDC certificate alone is not automatically interchangeable, though it can shorten your application (see the Comparable Agency Verification pathway below).

Two things distinguish it from most other California business certifications: it is free, and it is one of the only certifiers that verifies four different diversity categories under one roof and one application system.

2. Who the Supplier Clearinghouse Certifies

The ownership-and-control test is the same regardless of category: at least 51% ownership by one or more qualifying individuals, plus management and day-to-day operational control by those same individuals. What changes is who qualifies:

None of these categories require a personal net worth cap or an economic-disadvantage narrative — the test is ownership and control, full stop. That is a meaningful difference from DBE certification, which additionally requires proving individual social and economic disadvantage under 49 CFR Part 26.

3. The 4 Application Types

The Clearinghouse does not use a single one-size-fits-all form. Which application you file depends on your business size, incorporation history, and whether you already hold a comparable certification:

Confirm current thresholds and forms directly with the Clearinghouse — Fast Track eligibility figures and document checklists are updated periodically.

4. The Certification Process, Step by Step

1. Choose your application type. Standard, Fast Track, Fast Track 8(a), or CAV — see the table above.
2. Gather and notarize your documents. At minimum, expect to provide one year of recent federal tax returns (complete with all schedules) and a signed, notarized affidavit from the 51% qualifying owner(s). If a required document does not apply to your business, the Clearinghouse allows a brief written explanation on company letterhead in its place.
3. Submit the complete application package. Incomplete or inconsistent submissions are the most common source of delay — a missing schedule or an address mismatch can stall a file for weeks.
4. Document review. A Clearinghouse analyst reviews your ownership documents, tax returns, and affidavit against your application.
5. Site visit or interview (if needed). Not automatic for every applicant — see the next section for when this happens and what it covers.
6. Certification decision. Most complete applications are decided within roughly 30 to 90 days; files requiring a site visit, interview, or supplemental documents typically land toward the longer end.
7. Listing and 3-year cycle. Certified firms are added to the Clearinghouse's searchable directory and must re-verify at least 90 days before their certificate expires, roughly every three years.

5. The Site Visit / Interview Step

This is the part of the process applicants ask about most — and it is also the part where it is easiest to find vague or exaggerated claims online. Here is what can be verified from the Clearinghouse's own published guidance:

The Clearinghouse does not publish a fixed script of interview questions, and we have not been able to verify one from a primary source — treat any list of exact "interview questions" you find elsewhere online with skepticism. What we can say with confidence, because it follows directly from what the certification itself is meant to verify, is that a reviewer conducting a site visit or interview is checking the same three things the paperwork is supposed to prove:

This is the same underlying test used across most ownership-and-control certifications, including the on-site visit required for DBE certification. The DBE visit is federally mandated for every applicant under 49 CFR § 26.83; the Supplier Clearinghouse's version is discretionary and only happens when the file needs it — but if you do get one, preparing the way you would for a DBE visit is a reasonable and low-risk approach.

6. How to Prepare

Whether or not your file ends up needing a site visit or interview, these steps reduce delay and make a good impression if one is scheduled:

1. Submit a complete, notarized package the first time. Missing or unnotarized documents are the single most common cause of delay. If a document does not apply, include a written explanation rather than leaving a gap.
2. Make sure your paperwork tells one consistent story. Your tax returns, affidavit, and corporate documents should agree on ownership percentages, addresses, and officer names. Discrepancies are exactly what trigger a closer look.
3. Know your own numbers. Be ready to describe, without notes, how your business generates revenue, who your clients or contracts are, and how day-to-day decisions get made.
4. The qualifying owner should be the one who answers. If a site visit or interview is scheduled, the 51% owner — not a bookkeeper, consultant, or non-qualifying partner — should be the one available to speak and to lead the walkthrough.
5. Respond quickly to follow-up requests. If the Clearinghouse asks for a supplemental document after the initial submission, turning it around fast keeps your file from stalling in the queue.
6. Check the Comparable Agency Verification pathway first. If you already hold a current WBENC, NMSDC, NGLCC, or Disability:IN certificate, the CAV application is usually faster and less document-heavy than a Standard application.

7. How This Differs from WBENC and SBA WOSB

The Supplier Clearinghouse is one of several California pathways to a WBE or MBE credential, and each one unlocks a different type of buyer. We cover the full comparison — cost, timeline, and which California market each one reaches — in our WBE certification guide and MBE certification guide. The short version:

• Choose the Supplier Clearinghouse if your target buyer is a CPUC-regulated utility or telecom (PG&E, SCE, SoCalGas, SDG&E, AT&T, Comcast, and others under General Order 156). It is free and is the only certification that counts toward those utilities' GO 156 diversity goals.
• Choose WBENC (via WBEC-West) or an NMSDC council like SCMSDC or WRMSDC if your target buyer is a Fortune 500 corporation with its own supplier diversity program. These charge revenue-based fees and are not automatically interchangeable with Supplier Clearinghouse status, though holding one can qualify you for the Clearinghouse's CAV pathway.
• Choose SBA WOSB/EDWOSB if you are pursuing federal contract set-asides — a separate federal program with no overlap with California utility procurement.
• Choose DBE — not any of the above — if your work is on USDOT-funded transportation projects. See our DBE certification guide and DBE vs SBE vs DVBE comparison.

8. Frequently Asked Questions