District of Columbia time-of-use hours by utility
Every District of Columbia 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.
Every TOU schedule on this page verified since
Utilities in District of Columbia
Sorted by number of customers served in District of Columbia.
Frequently asked
-
What are the typical time-of-use on-peak hours in District of Columbia?
Across the 4 TOU plans tou.tools tracks in District of Columbia, the most common on-peak window is 12 PM – 8 PM (3 plans); others run 6 AM – 8 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.
-
Which electric utilities in District of Columbia offer time-of-use rate plans?
tou.tools tracks 1 District of Columbia utility with at least one active TOU rate plan — 4 active schedules in total. The largest by customers served is Potomac Electric Power Co. They span investor-owned utilities. The full list above is sorted by customers served.
-
Do District of Columbia time-of-use peak hours apply on weekends?
On the TOU plans we track in District of Columbia, on-peak hours apply on weekdays only — weekends are off-peak across all 4 plans. Many tariffs also treat observed holidays as off-peak; the Days column in each schedule above shows the exact rule.
-
Do District of Columbia time-of-use hours change by season?
Not on the plans we track. All 4 TOU plans in District of Columbia keep the same period hours year-round. Each schedule above lists its exact season dates.
-
When is the cheapest time to charge an EV in District of Columbia?
tou.tools tracks 2 EV-specific rate plans in District of Columbia (DC-MDU-PIV and DC-R-PIV). 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.
-
How do I find which District of Columbia utility serves a specific address or ZIP code?
tou.tools maps 131 District of Columbia 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.
Time-of-use periods for all of District of Columbia, one API.
Resolve any District of Columbia ZIP or address to its utility and get the current period plus the next transition — over REST or MCP.