Antitrust Radar

Economy-wide observatory

U.S. industry concentration atlas

How concentrated each U.S. industry is, from broad sectors down to detailed lines of business, with each industry's sales, value of shipments, or revenue, and employment from the Census Bureau. Census categories are statistical groupings and are not necessarily antitrust markets.

899Detailed industriessix-digit NAICS679Published HHI220 withheld68Top decileHHI >= 1,081$50.3TRevenue represented2022 Census

Sector signal plane

Where sector medians sit in the Census universe

17 sectorscircle = detailed rowsOpen priority list
Sector median HHI and CR4 signal planeSeventeen Census sectors plotted by median detailed-industry HHI and median CR4, with screen, watch, and priority review HHI regions. Circle size represents the number of detailed industries. Each point links to the filtered industry atlas.Median detailed-industry HHIMedian CR4 (%)Mining, quarrying, and oil and gas extraction: median HHI 559.2; median CR4 43.7% across 21 detailed industries.21Utilities: median HHI 615.9; median CR4 41.6% across 14 detailed industries.22Construction: median HHI 19.4; median CR4 6.4% across 31 detailed industries.Manufacturing: median HHI 439.3; median CR4 38.5% across 346 detailed industries.Wholesale trade: median HHI 360.8; median CR4 29.9% across 69 detailed industries.Retail trade: median HHI 133.9; median CR4 32.8% across 57 detailed industries.Transportation and warehousing: median HHI 277.4; median CR4 40% across 54 detailed industries.Information: median HHI 638.2; median CR4 45.6% across 29 detailed industries.51Finance and insurance: median HHI 405.8; median CR4 31% across 29 detailed industries.Real estate and rental and leasing: median HHI 116.9; median CR4 29.4% across 24 detailed industries.Professional, scientific, and technical services: median HHI 94.9; median CR4 17.8% across 48 detailed industries.Administrative and support and waste management and remediation services: median HHI 182; median CR4 23.5% across 44 detailed industries.Educational services: median HHI 75.6; median CR4 15% across 14 detailed industries.Health care and social assistance: median HHI 35.8; median CR4 8.4% across 39 detailed industries.Arts, entertainment, and recreation: median HHI 192.2; median CR4 21.2% across 25 detailed industries.Accommodation and food services: median HHI 15; median CR4 8% across 15 detailed industries.Other services (except public administration): median HHI 54.3; median CR4 12.8% across 40 detailed industries.
Below 100100-299300-499500+
Priority review / NAICS 51Information
Median HHI638.2Median CR445.6%Sector rank1 / 17Top-decile industries4 / 29

13.8% of detailed industries in this sector fall in the national HHI top decile.

Open sector evidence

NAICS hierarchy navigator

Move through the official industry classification

Select any branch to carry its detailed-industry scope into the concentration plane, economy map, and evidence directory below.

Current branchUtilitiesSector / level 2 of 6
Detailed descendants14Six-digit records in scope
Published HHI64.3%9 published / 5 withheld
Revenue$766BExact Census hierarchy row

Direct subsector records

Utilities / bars normalized to the largest visible revenue value

Selected classification

NAICS 22

Utilities

Sector with 14 detailed descendants.

Median HHI
615.9
Revenue
$766B
Employment
699.2K
Employer firms
7.6K

Curated antitrust layer

Research coverage gap

Profile AtlasDataTrace 2017-2022

NAICS hierarchy is an economic classification, not a legal product or geographic market definition.

Economy concentration plane

See scale and concentration together

Revenue uses a logarithmic axis, circle area follows employer-firm count, and color identifies the two-digit NAICS sector.

Current scopeUtilities14 detailed rows
Published HHI964.3% of scope
Median HHI615.9Median CR4 41.6%
Revenue represented$766B5 HHI disclosure-withheld

Detailed-industry cross-section

9 published industries plotted by revenue, HHI, employer-firm count, and NAICS sector.

5 withheld
NAICS 221122: Electric power distribution; HHI 210.6; $399.4B revenue; 1,421 employer firmsNAICS 221114: Solar electric power generation; HHI 615.9; $5.5B revenue; 644 employer firmsNAICS 221210: Natural gas distribution; HHI 386.5; $182.7B revenue; 432 employer firmsNAICS 221320: Sewage treatment facilities; HHI 1,003.4; $2.4B revenue; 401 employer firmsNAICS 221112: Fossil fuel electric power generation; HHI 180.8; $85.5B revenue; 265 employer firmsNAICS 221117: Biomass electric power generation; HHI 638; $947.9M revenue; 75 employer firmsNAICS 221121: Electric bulk power transmission and control; HHI 602; $17.6B revenue; 74 employer firmsNAICS 221118: Other electric power generation; HHI 881.4; $41.5M revenue; 46 employer firmsNAICS 221116: Geothermal electric power generation; HHI 2,055.1; $1.1B revenue; 22 employer firms

Selected record

Geothermal electric power generation

NAICS 221116
HHI
2,055.1
Revenue
$1.1B
CR4
83.6%
Employer firms
22
Open industry profile

High-HHI tail

Highest measured rows

01Geothermal electric power generationNAICS 221116 / $1.1B2,055.102Sewage treatment facilitiesNAICS 221320 / $2.4B1,003.403Other electric power generationNAICS 221118 / $41.5M881.404Biomass electric power generationNAICS 221117 / $947.9M63805Solar electric power generationNAICS 221114 / $5.5B615.906Electric bulk power transmission and controlNAICS 221121 / $17.6B602

Circle position and rank use Census-published HHI only. Disclosure-withheld values remain in the directory and are excluded from measured comparisons.

Economy composition map

See where economic scale and concentration meet

Each tile is one six-digit NAICS industry. Area follows the selected economic measure; color carries either published HHI or sector identity.

Size tiles by
Color tiles by
Current scopeUtilities14 detailed rows
Area / Revenue$766BSales, shipments, or revenue
Color / NAICS sector9 published5 HHI disclosure-withheld
Scope median HHI615.9Unweighted across published rows

Area = revenue / Color = naics sector

1 sector groups / 14 positive-value industries

2022 Economic Census

Active industry

Electric power distributionNAICS 221122

Revenue

$399.4B

52.15% of current scope / 52.1% of sector

HHI
210.6
CR4
17.3%
Employment
386,547
Employer firms
1,421
Open evidence profile

Largest by revenue

01Electric power distribution221122$399.4B02Natural gas distribution221210$182.7B03Fossil fuel electric power generation221112$85.5B04Nuclear electric power generation221113$34.6B

Tile area represents revenue within this detailed-industry scope. HHI is a national NAICS screen, not a legal antitrust market. Disclosure-withheld values remain mapped and use the gray band.

Census industry directory

Compare the full NAICS hierarchy

HHI and concentration ratios are based on national sales, value of shipments, or revenue for employer firms.

14 of 1,866
NAICS 221116Geothermal electric power generationDetailed industry
HHI2,055.1CR483.6%Revenue$1.1B
NAICS 221320Sewage treatment facilitiesDetailed industry
HHI1,003.4CR454.6%Revenue$2.4B
NAICS 221118Other electric power generationDetailed industry
HHI881.4CR450.5%Revenue$41.5M
NAICS 221117Biomass electric power generationDetailed industry
HHI638CR439.9%Revenue$947.9M
NAICS 221114Solar electric power generationDetailed industry
HHI615.9CR443.3%Revenue$5.5B
NAICS 221121Electric bulk power transmission and controlDetailed industry
HHI602CR439.3%Revenue$17.6B
NAICS 221210Natural gas distributionDetailed industry
HHI386.5CR429.5%Revenue$182.7B
NAICS 221122Electric power distributionDetailed industry
HHI210.6CR417.3%Revenue$399.4B
NAICS 221112Fossil fuel electric power generationDetailed industry
HHI180.8CR416.2%Revenue$85.5B
NAICS 221330Steam and air-conditioning supplyDetailed industry
HHIWithheldCR469.4%Revenue$1.3B
NAICS 221115Wind electric power generationDetailed industry
HHIWithheldCR462.4%Revenue$14.2B
NAICS 221113Nuclear electric power generationDetailed industry
HHIWithheldCR461.9%Revenue$34.6B
NAICS 221310Water supply and irrigation systemsDetailed industry
HHIWithheldCR439.9%Revenue$16.3B
NAICS 221111Hydroelectric power generationDetailed industry
HHIWithheldCR439.2%Revenue$4.3B

A NAICS industry is a statistical classification, not a legally defined antitrust market. Use these national revenue concentration measures to screen where deeper product and geographic market analysis may be warranted, not to infer market power or liability.

U.S. Industry Concentration Atlas | Antitrust Radar