PG&E Summer Bill Spike: Why Bills Increase

Last updated: January 2026

Summer bills in PG&E territory can be dramatically higher than other seasons, especially for customers in California's hot inland valleys. The combination of increased air conditioning usage, lower baseline allowances, and peak demand pricing creates a perfect storm for high bills.

Air Conditioning Impact

Air conditioning is the biggest driver of summer bill increases:

  • Central AC can use 3,000-5,000 watts while running
  • In hot areas, AC may run 8-12 hours daily
  • This can add 500-1,500 kWh to monthly usage
  • At PG&E rates, that's $150-500+ in additional charges

Customers in the Central Valley often see bills 2-3x higher in summer than winter.

Summer Baseline Changes

Your baseline allowance changes seasonally:

  • Summer baselines are often lower than winter
  • This means you hit Tier 2 rates faster
  • Combined with higher usage, more of your bill is at the higher tier

TOU Peak Pricing

Summer peak rates are highest during the hottest part of the day:

  • Peak hours (4-9 PM) coincide with when you need AC most
  • Peak rates can be $0.50+ per kWh
  • Running AC during peak hours significantly increases costs

Pre-cooling your home before 4 PM can help reduce peak usage.

Summer Bill Management Tips

  • Pre-cool your home before 4 PM when rates are lower
  • Set thermostat to 78°F or higher during peak hours
  • Use ceiling fans to feel cooler without lowering AC
  • Close blinds on south and west-facing windows
  • Run pool pumps and other appliances during off-peak hours

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Frequently Asked Questions

How much higher are PG&E summer bills?

In hot inland areas like the Central Valley, summer bills can be 2-3x higher than winter bills. Coastal areas see smaller increases, typically 20-50% higher in summer.

What's the best thermostat setting to save money in summer?

PG&E recommends 78°F when you're home and 85°F when away. Each degree below 78°F can increase cooling costs by 2-3%. Using ceiling fans allows you to feel comfortable at higher thermostat settings.

Should I pre-cool my home before peak hours?

Yes, pre-cooling before 4 PM when rates are lower can significantly reduce costs. Cool your home to 72-74°F before peak hours, then let it rise to 78°F during peak times.