Puget Sound Energy, Inc. (PSE) Rate Selection Guide
Puget Sound Energy is Washington's largest investor-owned utility, serving roughly 1.24 million electric and 753,000 gas customers across 10 counties in Western Washington. For C&I energy teams, PSE provides interval and billing data primarily through the EnergyCAP platform and Green Button exports, with ENERGY STAR Portfolio Manager automated feeds supporting Seattle and Washington Clean Buildings Act compliance.
Puget Sound Energy, Inc. (PSE) Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| Schedule 24 | electric | Basic $10.21-25.95/mo + energy ~$0.138-0.141/kWh (no demand charge), eff. Jan 29, 2026 | Small commercial sites under 50 kW demand |
| Schedule 25 | electric | Basic $91.18/mo + demand $11.41-17.10/kW seasonal + energy ~$0.098-0.124/kWh, eff. Jan 29, 2026 | Mid-size C&I 50-350 kW; demand management matters |
| Schedule 26 | electric | Basic $436.32/mo + demand $14.42-21.63/kW seasonal + energy $0.075963/kWh + reactive $0.0022/kVArh, eff. Jan 29, 2026 | Large C&I over 350 kW; primary-voltage delivery earns credits |
| Schedule 31 | gas | Avg ~$1.385/therm all-in (eff. Nov 1, 2025); basic + delivery + gas cost | Commercial/industrial firm gas users |
| Schedule 31T | gas | Avg transportation ~$0.859/therm; high basic charge, self-supplied gas | C&I customers procuring their own gas supply |
Market Overview
PSE is a fully regulated, vertically integrated investor-owned utility under the Washington UTC. Customers receive bundled service with no competitive retail supplier choice for electric or gas commodity.
Need to pull your actual usage data to compare rates? See the Puget Sound Energy, Inc. (PSE) Data Access Guide →
Current Rate Schedules
Puget Sound Energy (PSE) is a WA UTC-regulated combination electric and gas utility serving western Washington. C&I electric customers are tiered by demand: Schedule 24 (under 50 kW, energy-only), Schedule 25 (small demand, 50-350 kW), and Schedule 26 (large demand, over 350 kW, secondary or primary voltage). Demand-metered schedules carry seasonal demand charges (higher Oct-Mar) and a reactive power charge on loads at or above 100 kW. Gas C&I is served on Schedule 31 (firm sales) and 31T (firm transportation). All figures below are verified from PSE tariff sheets and UTC filings, with both the rates effective through Jan 28, 2026 and the new rates effective Jan 29, 2026 (per the 2024-25 general rate case, Dockets UE-240004/UG-240005).
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| Schedule 24 - General Service (Small) | electric | Commercial or industrial customers with demand less than 50 kW. | Monthly basic charge (by phase) + flat per-kWh energy charge; no demand charge. Subject to power cost, decoupling, clean energy and other rider adjustments. | Basic charge $10.21 single-phase / $25.95 three-phase per month; energy $0.137934/kWh (single) / $0.141134/kWh (three) effective Jan 29, 2026+ None |
| Schedule 25 - Small Demand General Service | electric | Commercial or industrial customers with demand greater than 50 kW but not more than 350 kW. | Basic charge + seasonal demand charge per kW of billing demand (higher Oct-Mar) + per-kWh energy charge + rider adjustments. | Basic charge $91.18/mo (Jan 29, 2026); energy ~$0.0982-0.1243/kWh seasonal (up from $70.14 basic / lower energy in 2025)+ $17.10/kW Oct-Mar, $11.41/kW Apr-Sep (effective Jan 29, 2026); was $13.16 / $8.78 effective Jan 29, 2025 |
| Schedule 26 - Large Demand General Service | electric | Customers with demand greater than 350 kW, at secondary or available primary distribution voltage. Primary-voltage delivery adds basic charge but receives demand/energy credits. | Basic charge + seasonal demand charge per kW of billing demand + per-kWh energy charge + reactive power charge per kVArh (loads at or above 100 kW). Primary service has a demand ratchet (Apr-Nov billing demand not below 60% of prior winter peak; 350 kW floor). | Beginning Jan 29, 2026 (secondary): basic $436.32/mo; energy $0.075963/kWh; reactive $0.00220/kVArh. Through Jan 28, 2026: basic $218.16; energy $0.081796/kWh+ Beginning Jan 29, 2026: $21.63/kW Oct-Mar, $14.42/kW Apr-Sep (was $16.27 / $10.84 through Jan 28, 2026). Primary delivery: $0.44/kW credit |
| Schedule 26 Conjunctive Demand Service Option | electric | Limited optional service (max 9 customers) under Schedule 26/31 aggregating 2-15 points of delivery, capped at 30 aMW; multi-site customers. | Schedule 26 basic/energy/reactive charges plus a delivery demand charge per kW and a conjunctive maximum demand charge across aggregated points of delivery. | Beginning Jan 29, 2026: delivery demand $11.90/kW Oct-Mar, $7.93/kW Apr-Sep; conjunctive max demand $9.73/kW Oct-Mar, $6.49/kW Apr-Sep+ Delivery + conjunctive demand charges as above |
| Schedule 31 - Commercial & Industrial Gas (Firm Sales) | gas | Any commercial or industrial natural gas customer (firm sales service). | Monthly basic charge + per-therm delivery charge + per-therm gas cost (cost of gas pass-through) + riders. Optional renewable natural gas blocks available. | Average all-in ~$1.38489/therm effective Nov 1, 2025 (down from ~$1.43065). Components (2018 reference): basic $32.16/mo, delivery $0.346590/therm, gas cost $0.361130/therm+ None (firm sales) |
| Schedule 31T - C&I Gas Transportation (Firm) | gas | Commercial/industrial customers who self-supply gas in the market and have a transportation service agreement (restricted to currently served customers). | Higher monthly basic charge + per-therm transportation commodity charge + balancing/overrun provisions; customer procures own gas supply. | Average transportation ~$0.85914/therm (no change Nov 2025). Components (2018 reference): basic $353.77/mo, transportation commodity $0.338270/therm+ None; balancing overrun charges apply |
Rate Recommendations by Use Case
Multi-site commercial benchmarking
Centralize interval and invoice data across buildings for energy benchmarking and Clean Buildings Act reporting.
EnergyCAP plus Portfolio Manager gives a single source of truth for consumption and cost across a portfolio.
- Use aggregate meters in EnergyCAP for buildings with 3+ meters
- Automate monthly feeds to Portfolio Manager
Industrial demand management
Pull 15-minute interval data to flatten demand peaks and lower kW-based charges.
Demand charges dominate large industrial bills; interval visibility enables peak shaving.
- Set demand alerts on EnergyCAP
- Evaluate primary/high-voltage service discounts
Developer / software integration
Integrate PSE customer interval and billing data into energy software via EnergyCAP or aggregator APIs.
EnergyCAP REST API and Nectar (docs.nectarclimate.com) provide programmatic access with proper authorization.
- Use EnergyCAP API key auth
- Use Nectar's API for billing and 15-min interval data — see docs.nectarclimate.com
Solar / DER sizing
Use historical 15-minute load data to right-size solar and storage for C&I sites.
Accurate load shapes are critical to DER economics; Nectar's API surfaces PSE interval data — see docs.nectarclimate.com.
- Request at least 12 months of interval history
- Validate against Green Button exports
Historical Rate Trends
PSE rates are set by WA UTC general rate cases plus annual power-cost and cost-of-gas adjustments. The 2024-25 general rate case (Dockets UE-240004/UG-240005) was approved with a two-step structure: rates effective Jan 29, 2025 and a larger step effective Jan 29, 2026. Demand and basic charges on Schedules 25/26 roughly doubled in basic charge and rose ~30% in demand charge over the two steps. The UTC approved orders in December 2025 raising electric rates ~12% net effective Jan 1/Jan 29, 2026. Gas rates were reduced ~3.2% (Schedule 31) in the Nov 1, 2025 annual cost-of-gas adjustment.
January 29, 2025
First step of 2024-25 general rate case (UE-240004/UG-240005): Schedule 26 secondary demand set to $16.27/kW Oct-Mar, $10.84/kW Apr-Sep; basic $218.16/mo; Schedule 25 demand $13.16 / $8.78 per kW.
Step 1 of multi-year GRCNovember 1, 2025
Annual cost-of-gas adjustment reduced gas rates: Schedule 31 C&I average ~3.20% decrease (to ~$1.38489/therm); Schedule 31T transportation no change.
-3.20% (Schedule 31 average)January 29, 2026
Second step of 2024-25 GRC plus UTC orders (Dec 2025): Schedule 26 secondary demand to $21.63/kW Oct-Mar, $14.42/kW Apr-Sep; basic doubles to $436.32/mo; Schedule 25 demand to $17.10 / $11.41 per kW, basic $91.18. Net electric increase ~12%.
~12% net (electric, system average)Overall trend: increasing
Next expected change: PSE filed a 2026 general rate case (pending UTC review). Next annual gas cost-of-gas adjustment expected Nov 1, 2026; next power-cost (Sch 95) adjustments ongoing.
Cost Optimization Strategies
PSE C&I electric bills are driven by winter-peaking seasonal demand charges and a reactive power charge, so peak management, power factor, and voltage/schedule selection are the main levers; gas customers can optimize via supply choice.
Winter peak demand management
For: Schedule 25, Schedule 26
Shave the highest monthly kW, especially Oct-Mar when demand charges are far higher ($21.63/kW vs $14.42/kW on Schedule 26 in 2026), to cut the demand component.
Power factor / reactive power correction
For: Schedule 26
Improve power factor to reduce the reactive power (kVArh) charge applied to loads at or above 100 kW on Schedule 26.
Primary-voltage service election
For: Schedule 26
Take Schedule 26 service at primary voltage to capture per-kW demand and energy credits (e.g. $0.44/kW credit, 2.44% energy reduction), weighed against customer-owned transformer costs and the winter demand ratchet.
Right-size rate schedule by demand
For: Schedule 24, 25, 26
Confirm the facility is on the lowest-cost applicable schedule for its demand level (24 vs 25 vs 26); eligibility hinges on the 12-month demand history.
Gas supply optimization (31 vs 31T)
For: Schedule 31, 31T
Larger gas users with market access may benefit from self-supplied transportation (Schedule 31T) instead of firm sales (Schedule 31), trading a higher basic charge for market gas pricing.
To implement these strategies, you need your 15-minute interval data. Learn how to download Puget Sound Energy, Inc. (PSE) interval data →
Frequently Asked Questions
How do C&I customers get interval data from PSE?▾
Commercial customers access 15-minute and hourly interval data through the EnergyCAP platform, which replaced the legacy MyData system. EnergyCAP supports CSV export and a REST API. Nectar also provides PSE billing and interval data via API with customer authorization — see docs.nectarclimate.com.
Does PSE support EDI for billing and meter data?▾
No. PSE does not offer customer-facing EDI for 814, 810, 867, or 820 transactions. Its only EDI-style support is OASIS for wholesale transmission. For programmatic customer data, use the EnergyCAP API or Green Button exports.
How does a third party get authorized to access PSE data?▾
The customer completes a PSE Customer Data Release Form (account number, service address, name on bill) or invites the third party as a user in EnergyCAP with a Viewer, Editor, or Admin role. Washington UTC rules require explicit customer permission, revocable at any time.
What rate schedule applies to my commercial facility?▾
Small commercial sites under 50 kW typically take Schedule 24; sites at 50 kW and above take Schedule 26 with demand charges; large industrial loads use high-voltage schedules with voltage discounts. Demand level and service voltage drive the choice.
Does PSE support Green Button Connect My Data?▾
PSE supports the Green Button ESPI XML standard primarily through manual Download My Data. Automated Connect My Data (machine-to-machine) sharing is not broadly available, so most automated access goes through EnergyCAP or Nectar's API (docs.nectarclimate.com).
How far back does PSE billing and usage data go?▾
The online portal provides up to 24 months of billing history. Interval and consumption history in EnergyCAP typically spans 12-24 months depending on account age and meter installation date.
Automate Puget Sound Energy, Inc. (PSE) Rate Analysis with Nectar
Nectar continuously monitors your Puget Sound Energy, Inc. (PSE) rate options and alerts you when a better schedule is available. Save 10-30% on energy costs.
Nectar for Energy & Sustainability Teams
Managing utility costs for commercial or industrial buildings? Nectar offers a free rate analysis — we'll review your current rate schedules and identify where switching tariffs or shifting load can save 10-30%.
Get a Free Rate AnalysisNectar for Energy Brokers & Consultants
Advising clients on rate optimization? Nectar works with energy consultants who need reliable interval data and automated rate comparison tools.
Partner with Us