How California AB 2143 Solar Prevailing Wage Requirements Affect Construction Payroll Teams
California AB 2143 solar prevailing wage requirements change how contractors must apply prevailing wage rules to certain commercial solar projects over 15 kilowatts (kW). These requirements affect how payroll teams calculate wages, document labor classifications, and report compliance on covered solar construction.
Because solar projects are an increasing portion of California’s construction pipeline, understanding AB 2143 is essential for payroll and compliance professionals working on commercial solar installations.
What Is California AB 2143 and Why It Matters
California AB 2143 is a state law that expands prevailing wage requirements to specific commercial solar projects exceeding 15 kW in capacity. Under the law, these projects are treated as public works for prevailing wage purposes when they are constructed for public agencies or under qualifying funding programs.
The law aims to ensure that workers on larger commercial solar installations receive prevailing wage protections similar to other public works projects.
For payroll teams, this means that certain solar projects previously exempt may now require prevailing wage compliance, certified payroll reporting, and fringe benefit tracking.
Who Must Comply With AB 2143 Solar Prevailing Wage Requirements
AB 2143 applies to contractors and subcontractors working on covered solar projects over 15 kW that meet the criteria for prevailing wage coverage in California.
Payroll and compliance teams must determine whether:
- The project is a commercial solar installation over 15 kW
- The project is constructed for a public agency or under qualifying programs
- The prevailing wage provisions apply based on the funding source
If all criteria are met, prevailing wage rules must be applied to all eligible work performed.
eBacon Smart Webinar Series:
AB889 Made Simple for California Payroll
AB 889 Made Simple: Fringe Compliance & Annualization Rules Contractors Must Understand is a webinar created to help payroll teams working on California public works. The annualization rule has created a lot of second-guessing around fringe deposits, paycheck treatment, and what documentation actually holds up when projects get reviewed.
How Prevailing Wage Works on Covered Solar Projects
When AB 2143 applies, solar work must be paid at the applicable prevailing wage rates determined by the California Department of Industrial Relations.
Payroll teams must:
- Identify the correct prevailing wage determination for the geographic location
- Classify workers according to the tasks they perform
- Calculate fringe benefits correctly
- Track hours worked and overtime
- Apply wage rates consistently across pay periods
Work classifications and wage determinations may differ for electrical, installation, and other solar trade tasks depending on the wage survey.
Certified Payroll Reporting for AB 2143 Solar Prevailing Wage
For solar projects covered under AB 2143, certified payroll reports must be submitted according to California prevailing wage rules. This typically means weekly reporting that shows:
- Worker names and classifications
- Hours worked by day
- Straight time and overtime wages
- Fringe benefits contributed or paid
- Contractor certification of accuracy
Accurate reporting demonstrates compliance and protects against wage claims or enforcement actions.
Common Payroll Challenges With Solar Prevailing Wage Requirements
Payroll teams often face challenges including:
- Determining whether a solar project qualifies for prevailing wage coverage
- Identifying and applying the correct wage determinations
- Tracking multiple employee classifications on the same job
- Calculating fringe benefits properly
- Submitting timely and accurate certified payroll reports
Anticipating these challenges and building robust internal processes helps reduce errors.
How To Prepare for AB 2143 Solar Prevailing Wage Compliance
To prepare, payroll and compliance teams should:
- Establish criteria to determine when AB 2143 applies
- Train staff on solar project classification and wage rules
- Update payroll systems to include solar work classifications
- Integrate fringe benefit calculation into solar payroll
- Create checklists for certified payroll reporting compliance
- Store documentation for audits and wage reviews
Clear internal procedures improve consistency and compliance outcomes.
Apprenticeship Obligations: A California-Specific Requirement
Unlike the federal Davis-Bacon Act (DBA), which has prevailing wage requirements but generally does not mandate apprenticeship usage, California law is explicit and requires that contractors on public works projects participate in and use state-approved apprenticeship programs. AB 2143 carries these apprenticeship obligations over to the commercial solar projects it covers.
How AB 2143 Differs from Federal Davis-Bacon
While both the California prevailing wage and the federal Davis-Bacon Act aim to ensure fair wages on publicly-funded or supported projects, their application and requirements differ significantly.
| Feature | California AB 2143 / State Prevailing Wage | Federal Davis-Bacon Act (DBA) |
| Applicability |
State law, covers specified private commercial solar projects (>15 kW) under NEM/NBT tariff. |
Federal law, covers federal or federally-funded construction contracts over $2,000. |
| Apprenticeship Mandate | Mandatory use of apprentices from state-approved programs (Labor Code § 1777.5). Required ratios must be maintained. | Generally not mandatory; no required ratios under the DBA itself, though may be required by other federal laws (e.g., IRA clean energy credits). |
| Wage Determination | Set by the California DIR Director, based on local collective bargaining agreements and wage surveys. | Set by the U.S. Department of Labor (DOL), based on local wage surveys. |
| Reporting | eCPRs submitted to the DIR (monthly minimum) and to the CPUC via the SURGE portal (biannually). | Certified Payroll (Form WH-347 or equivalent) submitted to the contracting agency. |
Meeting Apprenticeship Ratios
California Labor Code § 1777.5 requires contractors on public works projects to employ apprentices for a minimum number of hours, generally based on a ratio to journeypersons. This ratio varies by craft and is set by the California Apprenticeship Council.
Practical Steps for Apprenticeship Compliance:
- Registration: Register with an approved Apprenticeship Program, specifically those recognized by the Division of Apprenticeship Standards (DAS) for the relevant craft (e.g., Electrician, Iron Worker, Construction Craft Laborer).
- Request and Usage: File the required forms –
- DAS 140: Notifies the program of your intent to employ apprentices.
- DAS 142: Requests dispatch of apprentices to the project site.
- Tracking: Payroll systems must accurately track apprentice hours and ratios to ensure the legal ratio is maintained throughout the project’s duration. This data must be auditable and ready for submission as part of your certified payroll.
What To Do Next
If your company works on large commercial solar projects in California, review AB 2143 requirements now. Make sure payroll systems, wage determinations, and reporting processes are configured to handle prevailing wage rules when applicable.
Some construction payroll teams use tools like eBacon to help manage prevailing wage application, work classifications, and certified payroll workflows across different project types.
See how eBacon simplifies California prevailing wage and solar compliance. Book a quick demo.
Final Takeaways
- AB 2143 expands prevailing wage rules to certain commercial solar projects over 15 kW
- Payroll teams must determine applicability before processing payroll
- Correct wage determination and classification are essential
- Certified payroll reporting protects against penalties
- Preparation reduces compliance risk
California AB 2143 Solar Prevailing Wage Requirements FAQs
What projects are covered under California AB 2143?
Covered projects include commercial solar installations over 15 kW that meet prevailing wage coverage criteria in California.
Do all solar projects in California require prevailing wage compliance?
No. Only those that meet the size threshold and qualifying criteria under AB 2143 and applicable funding or ownership conditions are covered.
Who sets the prevailing wage rates for solar projects in California?
The California Department of Industrial Relations publishes prevailing wage determinations by county and classification, which apply to covered solar work.
How often must certified payroll reports be submitted?
Certified payroll reports are typically submitted weekly for covered prevailing wage projects in California.
The material presented here is educational in nature and is not intended to be, nor should be relied upon, as legal or financial advice. Please consult with an attorney or financial professional for advice.