Direct Answer
Sempra reports revenue across 2 business segments in its fiscal 2025 Form 10-K. Sempra California is the largest, with $11.8 billion of revenue (86% of the total), followed by Sempra Infrastructure at $2.0 billion (14%).
How Does Sempra Make Money?
Sempra California supplies 86% of revenue, so Sempra's results move mostly with that one business; the others matter more for diversification than for the headline number. Between fiscal 2024 and 2025, Sempra Infrastructure grew fastest (+4.4%) and Sempra California slowest (+3.8%), so the revenue mix tilts toward Sempra Infrastructure while that gap lasts.
| Segment | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
|---|---|---|---|---|
| Sempra California | $11.8 billion | $11.4 billion | 86.3% | 3.8% |
| Sempra Infrastructure | $2.0 billion | $1.9 billion | 14.3% | 4.4% |
What the Segment Figures Do Not Show
The rows above add up to 101% of Sempra's reported revenue for fiscal 2025; the difference is intersegment eliminations, corporate revenue or items the company reports outside its segments. Segment definitions are management's choice and change when a company reorganizes, in which case it restates prior years in the next filing, so a multi-year comparison should use the figures from a single filing. Revenue shows where sales come from, not where profit or cash is earned: a small segment can carry most of the margin.
Where These Numbers Come From
Every figure on this page is a value Sempra reported in the segment note and revenue disclosures of its Form 10-K filed February 26, 2026 (accession 0001032208-26-000010), read from the SEC's Financial Statement Data Sets. The prior-year column is the comparative figure from that same filing, so it reflects any restatement for a change in segments. Category names are the company's own XBRL labels, lightly reformatted for reading.
Rows that only total other rows (for example a "Products" line beside the individual products) are left out so nothing is counted twice. This page is educational and describes reported history for fiscal 2025; it is not a forecast or a recommendation.
Frequently Asked Questions
What are Sempra's business segments?
In its fiscal 2025 Form 10-K, Sempra reports revenue for Sempra California and Sempra Infrastructure.
Which part of Sempra brings in the most revenue?
Sempra California, with $11.8 billion of revenue in fiscal 2025, or 86% of the total.
Where does Sempra report its segment results?
In the segment note to the financial statements in its Form 10-K, most recently filed February 26, 2026, alongside management's discussion of each segment's results.