Utility Check

SDG&E Baseline Allowance Explained

Last updated: January 2026

SDG&E's baseline allowance represents the amount of electricity considered 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: SDG&E has multiple baseline zones based on local climate
  • Season: Summer (May-October) vs. Winter (November-April)
  • Heating Source: All-electric homes get a higher baseline

Coastal San Diego has lower baselines than inland areas due to milder temperatures.

Finding Your Baseline

Your baseline allowance appears on your SDG&E bill. Look for:

  • "Baseline Quantity" in the usage details
  • Your baseline zone designation
  • 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 130% of baseline at the lowest rate
  • High Usage: Usage above 130% at a higher rate

Given SDG&E's high rates, staying within baseline can save significant money.

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The "Total Amount Due" on your bill

Usually labeled "Total kWh" or "Usage"

Disclaimer: This tool provides a rough estimate based on typical residential rates. It does not account for fixed charges, demand charges, time-of-use pricing, taxes, fees, or other bill components. Results are for informational purposes only and should not be considered financial or legal advice. We cannot determine billing accuracy without reviewing your full bill.

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Frequently Asked Questions

How do I find my SDG&E baseline zone?

Your baseline zone appears on your SDG&E bill. You can also look it up on SDG&E's website by entering your zip code.

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 SDG&E to apply.

Why is my baseline lower than my neighbor's?

Baselines vary by zone, season, and heating source. Coastal areas have lower baselines than inland areas due to milder temperatures.