Utility Check

SCE Baseline Allowance Explained

Last updated: January 2026

SCE's baseline allowance represents the amount of electricity the California Public Utilities Commission considers necessary for basic household needs. It determines how much of your usage is charged at the lowest tier rate.

Understanding your baseline is essential because exceeding it means paying significantly higher rates for additional electricity.

How Baseline Works

Your baseline allowance is calculated based on:

  • Climate Zone: SCE has 16 baseline zones based on local climate
  • Season: Summer (June-September) vs. Winter (October-May)
  • Heating Source: All-electric homes get a higher baseline

Customers in hot inland areas receive higher baseline allowances than those in mild coastal areas.

Finding Your Baseline

Your baseline allowance appears on your SCE bill. Look for:

  • "Baseline Quantity" in the usage details
  • Your baseline zone number
  • Daily baseline allocation in kWh

Multiply your daily baseline by the number of days in your billing period to get your total baseline allowance.

Tier Pricing Impact

Once you exceed your baseline:

  • Tier 1: Usage up to 100% of baseline at the lowest rate
  • Tier 2: Usage above baseline at a higher rate

The difference between tiers can be significant. Staying within your baseline saves money on every kWh.

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The "Total Amount Due" on your bill

Usually labeled "Total kWh" or "Usage"

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Frequently Asked Questions

How do I find my SCE baseline zone?

Your baseline zone number appears on your SCE bill. You can also look it up on SCE's website by entering your zip code. SCE has 16 different baseline zones across its service territory.

Can I get a higher baseline allowance?

Yes, if you have an all-electric home or qualify for Medical Baseline due to medical equipment needs. Contact SCE to apply for these programs.

Why is my baseline different from my neighbor's?

Baselines vary by zone, season, and whether you have all-electric heating. Even neighbors in the same zip code may have different baselines based on their home's heating source.