How Long Does Switching Electricity Suppliers Take?

Typical timelines by region

Switching suppliers is an billing-system change, not a physical rewire. Illinois tells customers that no one visits the property and service is not disrupted [il-plugin-choice]. Pennsylvania says reliability and maintenance should not change because the distribution utility still delivers [pa-puc-shopping-faq]. The variable is how fast the utility updates the account after the new supplier notifies it.

Region / state	Published timing	What drives the date
Pennsylvania	Three business days after utility notification [pa-puc-shopping-faq]	Supplier submits enrollment
Connecticut	Next meter read if enrolled 10+ days before read [ct-energizect-faqs]	Read date on bill
Illinois	No published day count; no service visit [il-plugin-choice]	Utility processing / read cycle
Texas (ERCOT)	Often a few business days; ERCOT administers switching [ercot-about]	Electronic switch request
California DA	Six-month notice plus lottery timing [pge-da-rescission]	June window, not instant

These are starting points. A cultivator on a demand-metered account with complex billing arrangements should confirm with both the supplier and the utility account manager.

Pennsylvania: the three-day benchmark

Pennsylvania's PUC shopping FAQ is explicit: with accelerated switching rules, most Pennsylvania customers can be switched to a new supplier in three business days once the electric utility is notified of the switch by the supplier [pa-puc-shopping-faq]. That makes Pennsylvania one of the faster PJM states for commercial moves.

The three-day clock starts when the utility receives proper notification, not when you sign the contract. Build in time for credit approval, contract execution, and the supplier's operations team to submit the enrollment file. If you are racing a June 1 default rate reset, sign early enough for enrollment to clear before the reset date you are trying to beat.

Connecticut and read-date states: one cycle if you plan ahead

Connecticut's Energize CT rate board FAQs state that when switching suppliers, if you enroll at least ten days prior to your next meter read date, the switch happens on that meter reading date [ct-energizect-faqs]. Miss the ten-day window and you slip to the following cycle.

Many Mid-Atlantic and New England utilities use monthly or monthly-ish read cycles for commercial accounts. Your bill shows the next read date. Work backward: contract signed, supplier submits enrollment, ten-day buffer, read date equals new supplier rate.

Changing rates with the same supplier can take longer. Connecticut notes that renegotiating with an existing supplier may take up to two billing cycles because the new rate must appear as the next cycle rate on your prior bill [ct-energizect-faqs].

Texas: ERCOT switching at scale

Inside ERCOT competitive areas, ERCOT administers retail switching for about 8 million premises [ercot-about]. Texas does not have a utility default supply product in those territories; every customer is with a retail electric provider. Switching REPs is a routine electronic transaction.

Facilities still watch contract end dates and auto-renewals. Speed of switching does not eliminate early termination fees on the outgoing REP contract.

What slows a switch down

Unpaid balance. Pennsylvania allows switching with a balance but requires an arrangement with the utility first [pa-puc-shopping-faq].

Wrong account information. SAID, ESI ID, or account number errors delay enrollment until corrected.

Mid-contract ETF. The utility may switch you in days, but your old supplier bills a termination fee the same week.

California Direct Access. Leaving bundled PG&E service requires a six-month notice submitted during the June lottery window, not a three-day switch [pge-da-rescission]. That is a planning horizon measured in months.

Meter upgrades. Rare for a straight supply switch. Some time-of-use or demand contracts may require an interval meter you do not yet have.

Coordinating with contract end and default rate resets

Commercial cannabis loads often switch to escape a rising default rate or to lock supply before summer capacity costs flow through. Pair three dates:

1. Current supplier contract end (including evergreen notice deadline).
2. Utility default rate reset (June 1 in much of PJM, January 1 in Maine, quarterly at PECO).
3. Next meter read date or state switching rule deadline.

The FAQ on what happens to your utility when you switch covers delivery versus supply after enrollment. State switching guides such as Pennsylvania, Connecticut, and Texas walk through local steps.

Illinois enrollment mechanics for commercial accounts

Plug In Illinois states that switching does not require a site visit and does not disrupt service [il-plugin-choice]. The effective date still follows utility processing tied to billing cycles. ComEd and Ameren accounts often see the new supplier rate on the first full bill after enrollment clears. Large commercial accounts with demand meters may need extra validation if the supplier's credit review takes longer than the utility's enrollment window.

Build a timeline backward from your target start month: contract execution, supplier credit approval, LOA submission, utility enrollment file, then meter read date.

New service versus supplier switch on an existing meter

Switching suppliers on an energized meter is faster than coordinating first-time service with a new supplier start date. Greenfield cultivation projects should separate utility energization from supplier contract start. Commissioning load is unstable; starting a fixed full-requirements contract during veg-only commissioning may trigger bandwidth penalties. See new facility buildout utility questions.

Cannabis credit review and enrollment delays

Suppliers run business credit checks before submitting enrollment. Cannabis operators without traditional banking may need to provide financial statements, tax returns, or a personal guarantee. That review happens before the utility clock starts. Start the RFP sixty to ninety days before you need the rate, not sixty days before contract expiration alone.

If enrollment fails because of bad account data, fix the SAID or ESI ID and resubmit. Pennsylvania allows switching with a balance if you arrange payment with the utility first [pa-puc-shopping-faq].

Witness test and supply start on new cultivation meters

New service energization is not the same as supplier enrollment. The utility may energize the meter weeks before flower rooms hit full load. Starting a fixed full-requirements contract at first energization while only veg rooms are live can misalign bandwidth with actual usage. Coordinate supplier start with the first month you expect steady-state kWh, not the commissioning date.

Pennsylvania accelerated switching still requires the supplier to submit clean enrollment data [pa-puc-shopping-faq]. Errors on account number or rate class code delay the three-day clock. Have your authorized signer and tax ID ready when the supplier requests contract execution.

Returning to default mid-term

Connecticut utilities must switch residential and small business customers back to Standard Service within two business days of a phone request [ct-energizect-faqs]. Commercial accounts follow similar return paths in most choice states. Your outgoing supplier may invoice an early termination fee the same week the utility processes the return. Budget both timelines when you trial a supplier for one quarter.

Project timeline table for a new cultivation facility

Week	Utility track	Supplier track
Design	Load letter and service application	Gather proxy load data from comparable facility
Construction	Transformer lead time	Issue RFP with target energization month
Commissioning	Witness test and energization	Credit review and LOA execution
Steady-state flower	Rate class confirmed on first bill	Supplier enrollment on first full read

Pennsylvania can switch in three business days after utility notification on existing meters [pa-puc-shopping-faq]. Connecticut aligns to the next read if you enroll ten days ahead [ct-energizect-faqs]. New service adds weeks to months on the utility track regardless of supplier speed.

Auto-renewal collision with switch timing

If your current contract auto-renews month-to-month in 30 days unless you gave 60-day notice, the utility may switch you in 3 days while the old supplier bills variable month-to-month pricing simultaneously until notice clears. Calendar contract notice before utility enrollment. See contract fine print for evergreen windows.

Switching checklist for accounts payable

1. Confirm consolidated versus direct billing with supplier.
2. Add supplier vendor record before first post-switch invoice.
3. Keep utility vendor record active for delivery charges.
4. Set calendar reminder for contract notice window.
5. Save enrollment confirmation email with start read date.

Illinois enrollment does not require a site visit [il-plugin-choice]. Pennsylvania can complete in three business days after utility notification [pa-puc-shopping-faq]. Plan internal approval workflows for those external timelines so credit review does not miss your target read date.

Broker-submitted enrollment adds a day

When a broker submits enrollment, allow one business day for LOA processing before the utility clock starts in Pennsylvania [pa-puc-shopping-faq]. Send signed LOA the same day you sign the supply contract so the supplier operations team can file before your target read date.

Cultivation-specific enrollment timing

Flower rooms that energize mid-month can distort the first supplier bill if enrollment starts on a read date before steady-state load. Ask the supplier to start on the first read after full flower load is stable when bandwidth is tight [pa-puc-shopping-faq]. Veg-only commissioning months are poor baselines for block-and-index sizing.