Northwestern Energy

Northwestern Energy is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Electric Companies
• Gas Utility Companies
• Natural Gas
• Utility Companies

North American Industry Classification System (NAICS) Categories:

• Electric Power Distribution
• Natural Gas Distribution > Natural Gas Companies

Standard Industry Classification (SIC) Categories:

• Electric Services
• Natural Gas Distribution
• Gas Production &/Or Distribution
• Combination Utilities, Nec