California time-of-use hours by utility

Every California electric utility we track with at least one active time-of-use rate plan, with peak and off-peak hours verified against the published tariff. Periods only — no price values.

16Utilities covered
84Active TOU plans
2,443ZIP codes covered

Every TOU schedule on this page verified since

Utilities in California

Sorted by number of customers served in California.

Pacific Gas & Electric Co.Investor Owned · 8 plans Southern California Edison CoInvestor Owned · 14 plans Los Angeles Department of Water & PowerMunicipal · 4 plans San Diego Gas & Electric CoInvestor Owned · 8 plans Sacramento Municipal Util DistPolitical Subdivision · 8 plans Imperial Irrigation DistrictPolitical Subdivision · 3 plans Modesto Irrigation DistrictPolitical Subdivision · 2 plans City of RiversideMunicipal · 3 plans Turlock Irrigation DistrictPolitical Subdivision · 5 plans City of RosevilleMunicipal · 2 plans City of PasadenaMunicipal · 7 plans Liberty UtilitiesInvestor Owned · 7 plans PacifiCorpInvestor Owned · 1 plan City of LodiMunicipal · 4 plans Bear Valley Electric ServiceInvestor Owned · 6 plans City of AzusaMunicipal · 2 plans

Frequently asked

  1. What are the typical time-of-use on-peak hours in California?

    Across the 20 residential TOU plans tou.tools tracks in California, the most common on-peak window is 4 PM – 9 PM (11 plans); others run 5 PM – 8 PM and 5 PM – 9 PM. Every hour outside the on-peak (and any mid-peak) window is billed as off-peak. Exact boundaries vary by utility and plan — see each utility's schedule above.

  2. Which electric utilities in California offer time-of-use rate plans?

    tou.tools tracks 16 California utilities with at least one active TOU rate plan — 84 active schedules in total. The largest by customers served are Pacific Gas & Electric Co., Southern California Edison Co, and Los Angeles Department of Water & Power. They span investor-owned utilities, municipal utilities, and political subdivisions. The full list above is sorted by customers served.

  3. Do California time-of-use peak hours apply on weekends?

    It depends on the plan. Of the 20 residential TOU plans we track in California, 12 apply on-peak periods every day including weekends, while 8 restrict on-peak to weekdays and treat weekends as off-peak. Many tariffs also treat observed holidays as off-peak; the Days column in each schedule above shows the exact rule.

  4. Do California time-of-use hours change by season?

    Some do. Of the 20 residential TOU plans we track in California, 11 shift their period boundaries between seasons (typically summer and winter), while 9 keep the same hours year-round. Each schedule above lists its exact season dates.

  5. When is the cheapest time to charge an EV in California?

    tou.tools tracks 18 EV-specific rate plans in California (BEV, DT, EV, EV-D, EV-TOU, EV-TOU-2, EV-TOU-5, EV2-A, TOU-A-1-EV, TOU-A-2-EV, TOU-A-3-EV, TOU-D-1-EV, TOU-EV-1, TOU-EV-2, TOU-EV-3, TOU-EV-7, TOU-EV-8, and TOU-EV-9). On EV time-of-use plans the lowest-cost window is generally the overnight super-off-peak or off-peak period; charging then avoids the on-peak window. See the EV plan schedules for the exact hours.

  6. How do I find which California utility serves a specific address or ZIP code?

    tou.tools maps 2,443 California ZIP codes to the utilities that serve them. Because service territories can overlap, a ZIP may return more than one candidate utility; supplying a full street address resolves it to a single utility via a geocoded point-in-territory lookup. The REST API and MCP server both return the matching utility and its current TOU period.

For developers & agents

Time-of-use periods for all of California, one API.

Resolve any California ZIP or address to its utility and get the current period plus the next transition — over REST or MCP.

Get a free API key See full coverage