Solar Sanity Checksolar, decoded Independent. Nothing you type leaves your browser.

Public Service Company of Oklahoma (PSO)

Oklahoma Utility Interconnection & net metering rules
Net Metering Allowed1
NEM TypeMonthly
Line Taps Allowed1
Load Taps Allowed0
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
1
NEM Type
Monthly
TOU Utility
0
Post Solar Billing Method
Net Metering
Net Excess Generation Notes

If you delivered more energy to PSO than you used during the month (measured in kilowatt-hours, or kWh), PSO will show the excess kWh on that month’s bill. After the calendar month is complete and SPP publishes their LMP prices, PSO will calculate the average price for that month (when your energy was produced), and you will receive the credit amount on your next month’s bill.


Avoided cost changes monthly or as needed.

Rebates Offered
0
Deregulated
0
Allows Standby
0

Interconnection & taps

Approval Req To Install
Yes
Interconnection Level
3
Line Taps Allowed
1
Load Taps Allowed
0
Tap Criteria

Piercing connectors are not allowed. Utilize the IT-350 Polaris lugs connections for the LST

Automatic Transformer Upgrade Size
0

System size & offset

System Size Restrictions
0
System Size Restriction Type
No Restrictions
System Size Battery Included
0
System Size Includes Existing Systems
0
Offset Type
Percentage
Offset Value
125
Offset Calculation Basis
Historical
Offset Calculation Period
12
Industry Standard Watts Sqft
2
System Offset Notes

System must be sized as accurately as possible. Maximum offset is 125% of their historical loads. If it goes over 125% then they will not be eligible for the Net Energy Billing Option.

Offset Calc Tool
Historical Usage

Metering & disconnect

Production Meter Required
Yes
Production Meter Position
Inv-Disco-PM-POI
Production Meter Labeling
Production Meter
AC Disconnect Required
Yes
AC Disconnect Labeling
Visible Lockable Labeled Disconnect
Allowed Meter Adapter
ConnectDER

Plans & docs

Site Plan Reqs

Include spec sheets for any existing modules and existing inverters.


Disconnect must be within 10 feet of the main utility meter.


BOS ELEVATION:

  • Needs to be drawn from a Site Audit picture of the actual site (See Elevation Drawing Example in files section below), hand drawn/MS paint drawings not acceptable.
  • Equipment cannot be under an accessible window
  • PM Meter should be 4 ft min and 6ft max from grade.
  • Conduit runs need to be shown on elevation drawing.
  • For LST add tap box.
  • Show the dimension of each piece of BOS equipment from relative grade
  • Conductors from Hoffman box to PV AC Disconnect shall be treated as service-entrance conductors and shall be as short as possible
SLD Reqs

Relay Meter Orientation = Under/Over


Production Meter Required

  • All meter sockets will be ringless style.
  • Meter socket must be from the "AEP EastMeterSocket 10-30-2021" list which is attached in the Files Section below
  • Show PM wired in from the top and out from the bottom
  • Production meter must show bottom lugs going to inverter and top lugs to the POI. See example in files section.

Order of Equipment

  • For Battery Backup systems with BUI/GW/SC - Inverter/Combiner > BUI/GW/SC > non-fused AC disconnect > PV meter -> MSP/MPI > utility meter.
  • For PV Only and Non-backup Breaker Tie In - Inverter>Non fused AC Disconnect>Production Meter>POI
  • For LST - Inverter>Non Fused AC Disconnect>Production Meter>Fused AC Disconnect>POI

Taps

  • Line Side Taps allowed
  • Piercing Tap Connectors not allowed. Use Polaris Taps with service rating stamped on the device
Electric Service Reqs

Electric Service Requirements - Requirements For Electrical Service (aepnationalcustomers.com)

Install Reqs

Production Meter Socket Required -

  • Must have a barrel lock provision
  • The meter must be wired so that energy production flows through the meter

AC Disconnect Required

  • Must sit 48" to 66" above ground level
Placards

AC Disconnect Placard Required:

  • "Caution Generation Utility AC Disconnect"
Electrical Stamp Required
0
Equipment Approvals
California Energy Commission
Meter Num Req SLD 3LD
0
ESID Num Req SLD 3LD
0
Rate Schedule Link
link
Website
link
Phone
(614) 716-2080

Other details

Restrict Inspection
0
Revision Required
1
Mod Swap Requires Planset
1
Address ID
4025169
Express Planset Eligible
No
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Public Service Company of Oklahoma (PSO) before you rely on this. The useful move: if an installer says you need a main panel upgrade, ask how these tap and interconnection policies were considered first.