GreyStone Power peak
& off-peak hours

Below is every active TOU rate plan we track for GreyStone Power — 1 plan — with period boundaries verified against the published tariff. No price values; periods only.

Rate Plans

RATE-300 Residential Electric Vehicle Service

EV
PeriodSeasonDaysHours
Super Off-Peak All year Every day 11 PM – 7 AM
On-Peak Jun 1 – Sep 30 Mon–Fri 2 PM – 8 PM
Effective
Jun 1, 2021
Verified
Free · no credit card

Use these GreyStone Power hours in your app.

Current period and next transition for any ZIP or address.

Get a free API key

250 calls/mo · REST & MCP

or read the docs

FAQ's

  1. What are GreyStone Power's on-peak hours?

    On the RATE-300 plan (Residential Electric Vehicle Service), on-peak hours run from 2 PM – 8 PM on weekdays. All remaining hours are classified as off-peak.

  2. Does GreyStone Power charge more for electricity at certain times?

    Yes. GreyStone Power offers time-of-use (TOU) rate plans where electricity costs vary depending on the period. The period—peak, off-peak, mid-peak, or super off-peak—depends on the time, day, and season. This page lists boundaries for 1 active schedules; tou.tools does not publish pricing ($/kWh) details.

  3. How do I get GreyStone Power time-of-use periods in my app?

    Schedules are accessible programmatically via the tou.tools REST API and MCP server for AI agents. By querying a U.S. address or ZIP code, your application can instantly retrieve the current period and next scheduled transition time. Developer API keys are free.

  4. Do GreyStone Power time-of-use hours change during holidays or seasons?

    Yes. Peak hours and rate periods can vary by season (typically summer and winter halves) and special holidays. While some schedules like E-ELEC keep stable hours year-round, others introduce super off-peak windows or adjust peak times. Check each rate plan card above for specific seasonal boundaries.

  5. What is the best time to charge an EV under GreyStone Power's plans?

    For customers on EV-specific plans like RATE-300, the most cost-effective time to charge is during super off-peak or off-peak hours. Charging during these designated windows significantly reduces electricity costs and minimizes demand on the grid.