Washington Tariff Book

The Washington Tariff Book.

The following tariff is on file with the Washington Utilities & Transportation Commission and includes all general rules, regulations and rate schedules relating to NW Natural’s service to customers within its service territory in the state of Washington.

See the Index.

General definitions, rules and regulations

Definitions
Rule 1—Service Application and General Terms of Service
Rule 2—Establishment of Credit
Rule 3—Deposits
Rule 4—Billing, Payment Responsibilities, and Payment Arrangements
Rule 5—Disconnection and Reconnection Procedures
Rule 6—Emergency Medical Certificates
Rule 7—Access to Meters
Rule 8—House Piping and Gas Appliance Standards
Rule 9—Appliance Inspection and Adjustment Services: Residential
Rule 10—Gas Delivery and Measurement
Rule 11—Determination of Thermal Units
Rule 12—Distribution Facilities Standards
Rule 13—Hazardous Substances
Rule 14—Service Interruptions
Rule 15—Curtailment Priority
Rule 16—Curtailment of Service
Rule 17—Curtailment Discount: Firm Service Curtailment
Rule 18—Notices and Communications
Rule 19—General Company Liability
Rule 20—Termination of Gas Service Account—By Customer
Rule 21—Written Service Agreements

Adjustment schedules

Schedule 200—Summary of Adjustments
Schedule 201—Temporary (Technical) Adjustments to Rates
Schedule 203—Purchased Gas Cost Adjustments to Rates
Schedule 205—Temporary Rate Adjustment Open-Access Transportation Firm & Interruptible Schedules (CANCELLED)
Schedule 206—Temporary Rate Adjustment Open-Access Transportation Special Contracts & Incentive Rates (CANCELLED)
Schedule 207—General Rate Adjustment
Schedule 208—Temporary Rate Adjustment (FAS 106) (CANCELLED)
Schedule 209—Credits to Customers Related to Holding Company Formation (CANCELLED)
Schedule 210—Adjustment to Rates for Property Sales
Schedule 211—Special Rate Adjustment Schedule 90-T and Schedule 91-T (CANCELLED)
Schedule 212—Adjustment to Rates Residential Rate Mitigation
Schedule 213—Special Rate Adjustment (Demand Charges) All Firm Sales & Transportation Rate Schedules (CANCELLED)
Schedule 214—Special Rate Adjustment (Margin Revenue) Residential Services (CANCELLED)
Schedule 215—Adjustment to Rates Energy Conservation Programs
Schedule 220—Special Rate Adjustment
Schedule 221—Rate Adjustment for Updated Depreciation Rates
Schedule 225—Adjustments to Rates for Costs Relating to South Mist Pipeline Extension Project (CANCELLED)
Schedule 230—Temporary Adjustments to Rates for Low-Income Programs
Schedule 231—Temporary Adjustments to Rates for Residential Bill Discount Program
Schedule 232—Temporary Adjustments to Rates - Regulatory Fee Increase
Schedule 233—Temporary Adjustments to Rates - Industrial Customer Energy Efficiency Audit Cost
Schedule 250—Monthly Incremental Cost of Gas
Schedule 303—Washington Environmental Cost Recovery Mechanism
Schedule 305—Adjustment for Certain Income Taxes (2017 Federal Tax Cuts and Jobs Act)
Schedule 306—Multi-Year Rate Plan Adjustment
Schedule 308—Washington Climate Commitment Act Recovery Mechanism

General schedules

Schedule A—Addition of City Exactions
Schedule B—Bill Payment Options (Optional)
Schedule C—Miscellaneous Charges
Schedule D—Residential Meter Reading Estimating Program
Schedule E—Distribution Facilities Extensions for Applicant-Requested Services & Mains
Schedule F—Residential High-Efficiency Furnace Program (CANCELLED)
Schedule G—Energy Efficiency Services and Programs - Residential and Commercial
Schedule H—Commercial Energy Conservation Services Program (CANCELLED)
Schedule I—Washington Low-Income Energy Efficiency (WA-LIEE) Programs
Schedule J—Gas Residential Energy Assistance Tariff (GREAT)
Schedule K—COVID-19 Assistance Program (CAP)
Schedule L—Residential Bill Discount Program - Optional for Qualifying Customers
Schedule M—Meter Testing Procedures
Schedule P—Determination of Company's Purchased Gas Cost Adjustments & Weighted Average Cost of Gas
Schedule T—Customer-Owned Natural Gas Transportation Service
Schedule U—Smart Energy™ Program

Rate schedules

Schedule 1—General Sales Service
Schedule 2—Residential Sales Service
Schedule 3—Basic Firm Sales Service - Non-Residential
Schedule 4—Large Firm Service (CANCELLED)
Schedule 5—High Load Factor Large Firm Service (CANCELLED)
Schedule 10—Charges for Special Metering Equipment, Rental Meters and Metering Services
Schedule 11—Seasonal Swing and Off-Peak Service (CANCELLED)
Schedule 19—Gas Light Service (CANCELLED)
Schedule 21—Firm Service High Load Factor (CANCELLED)
Schedule 22—Dual Fuel Sales Service (CANCELLED)
Schedule 23—High Priority Interruptible Service (CANCELLED)
Schedule 24—Residential Sales Service -- All Gas (CANCELLED)
Schedule 27—Residential Heating Dry-Out Service
Schedule 41—Non-Residential Sales and Transportation Service
Schedule 42 —Large Volume Non-Residential Sales and Transportation Service
Schedule 43—High Volume Non-Residential Firm and Interruptible Transportation Service
Schedule 55—Interruptible Incentive Sales and Transportation Service (CANCELLED)

Certain documents made available here are approved by the OPUC and the WUTC. Part or all of these documents are subject to change without prior notice. NW Natural does not warrant the accuracy, reliability, or timeliness of any information in this public access system, and shall not be liable for any losses caused by such reliance on the accuracy, reliability, or timeliness of such information. Portions of such information may be incorrect or not current. Any person who relies on any information obtained from this system does so at his or her own risk.

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