Maryland time-of-use hours by utility

Across the 6 residential TOU plans tou.tools tracks in Maryland, the most common on-peak window is 6 AM – 9 AM (4 plans); others run 5 PM – 9 PM and 2 PM – 7 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.

tou.tools tracks 6 Maryland utilities with at least one active TOU rate plan — 20 active schedules in total. The largest by customers served are Baltimore Gas & Electric Co, Potomac Electric Power Co, and The Potomac Edison Company. They span investor-owned utilities and electric cooperatives. The full list above is sorted by customers served.

On the residential TOU plans we track in Maryland, on-peak hours apply on weekdays only — weekends are off-peak across all 6 plans. Many tariffs also treat observed holidays as off-peak; the Days column in each schedule above shows the exact rule.

Yes. All 6 residential TOU plans we track in Maryland split the year into seasons (typically summer and winter) with different period boundaries. Each schedule above lists its exact season dates.

tou.tools tracks 5 EV-specific rate plans in Maryland (EV, EV-TOU, MD-PIV, MD-R-PIV, and RIDER-EV-TOU). 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.

tou.tools maps 666 Maryland 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.