SIC 4911 to NAICS Code Crosswalk
The legacy 1987 SIC code 4911 (Electric Services) maps transitively to modern U.S. Census 2022 NAICS code(s): 221111, 221112, 221113, 221114, 221115, 221116, 221117, 221118, 221121, 221122.
Concordance Concordance Mapping Asset
| Source Code | Source Industry | Target Code | Target Industry | Relation | Concordance Path |
|---|---|---|---|---|---|
| SIC 4911 | Electric Services | NAICS 221111 | Hydroelectric Power Generation | One-to-Many | SIC1987:4911 → NAICS1997:221111 → 2002:221111 → 2007:221111 → 2012:221111 → 2017:221111 → 2022:221111 |
| SIC 4911 | Electric Services | NAICS 221112 | Fossil Fuel Electric Power Generation | One-to-Many | SIC1987:4911 → NAICS1997:221112 → 2002:221112 → 2007:221112 → 2012:221112 → 2017:221112 → 2022:221112 |
| SIC 4911 | Electric Services | NAICS 221113 | Nuclear Electric Power Generation | One-to-Many | SIC1987:4911 → NAICS1997:221113 → 2002:221113 → 2007:221113 → 2012:221113 → 2017:221113 → 2022:221113 |
| SIC 4911 | Electric Services | NAICS 221114 | Solar Electric Power Generation | One-to-Many | SIC1987:4911 → NAICS1997:221119 → 2002:221119 → 2007:221119 → 2012:221114 → 2017:221114 → 2022:221114 |
| SIC 4911 | Electric Services | NAICS 221115 | Wind Electric Power Generation | One-to-Many | SIC1987:4911 → NAICS1997:221119 → 2002:221119 → 2007:221119 → 2012:221115 → 2017:221115 → 2022:221115 |
| SIC 4911 | Electric Services | NAICS 221116 | Geothermal Electric Power Generation | One-to-Many | SIC1987:4911 → NAICS1997:221119 → 2002:221119 → 2007:221119 → 2012:221116 → 2017:221116 → 2022:221116 |
| SIC 4911 | Electric Services | NAICS 221117 | Biomass Electric Power Generation | One-to-Many | SIC1987:4911 → NAICS1997:221119 → 2002:221119 → 2007:221119 → 2012:221117 → 2017:221117 → 2022:221117 |
| SIC 4911 | Electric Services | NAICS 221118 | Other Electric Power Generation | One-to-Many | SIC1987:4911 → NAICS1997:221119 → 2002:221119 → 2007:221119 → 2012:221118 → 2017:221118 → 2022:221118 |
| SIC 4911 | Electric Services | NAICS 221121 | Electric Bulk Power Transmission and Control | One-to-Many | SIC1987:4911 → NAICS1997:221121 → 2002:221121 → 2007:221121 → 2012:221121 → 2017:221121 → 2022:221121 |
| SIC 4911 | Electric Services | NAICS 221122 | Electric Power Distribution | One-to-Many | SIC1987:4911 → NAICS1997:221122 → 2002:221122 → 2007:221122 → 2012:221122 → 2017:221122 → 2022:221122 |
Why Concordances Don't Line Up 1:1
The Standard Industrial Classification (SIC) system was established in 1937 and last updated in 1987, organizing businesses by end products. The North American Industry Classification System (NAICS) replaced it in 1997, classifying establishments by production processes. Because of this structural shift, many-to-many relationships are common, requiring chained concordance steps to bridge the historical gap.
Reverse Crosswalk: Going the other way? See the mapping at NAICS 221111 to SIC, NAICS 221112 to SIC, NAICS 221113 to SIC, NAICS 221114 to SIC, NAICS 221115 to SIC, NAICS 221116 to SIC, NAICS 221117 to SIC, NAICS 221118 to SIC, NAICS 221121 to SIC, NAICS 221122 to SIC.
Related Pages & Tools
- SIC Code 4911 Profile — Legacy OSHA definition and associated industrial metadata.
- SIC Major Group 49 Hub — Legacy category group directory.
- Interactive Crosswalk Engine — Convert any SIC or NAICS code dynamically.
Primary Ingestion Source
Data sourced from the U.S. Census Bureau Concordances (1997, 2002, 2007, 2012, 2017, and 2022 editions). Last verified on 2026-06-30.