Public Service Company of Oklahoma (PSO)

Net metering & export

Net Metering Allowed

Yes

NEM Type

Monthly

TOU Utility

No

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

No

Deregulated

No

Allows Standby

No

Interconnection & taps

Approval Req To Install

Yes

Line Taps Allowed

Yes

Load Taps Allowed

No

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

No

System Size Includes Existing Systems

No

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 (, 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

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..

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

No

Equipment Approvals

California Energy Commission

Meter Num Req SLD 3LD

No

ESID Num Req SLD 3LD

No

Rate Schedule Link

link

Website

link

Phone

(614) 716-2080

Other details

Revision Required

Yes

Mod Swap Requires Planset

Yes