PNM - Public Service Company of New Mexico

Net metering & export

Net Metering Allowed

1

NEM Type

Annual

TOU Utility

1

Post Solar Billing Method

Net Metering

Net Excess Generation Notes

APRIL 1, 2023:

SMALL PV: 10 kW AC or Less: NEM - Annual

LARGE PV: Over 10 kW AC: NEM - Monthly

If you produced more than what you used, the NET overproduction will be credited to you in one of two ways:

• SMALL PV PROGRAM (Inverter capacity of 10kW-AC or less): PNM will credit you the NET overproduction as a Cumulative Renewable Energy Credit (in kWh) on the next month¿s bill. These credits never expire and, if your system is large enough, can build up during the year and be used later to reduce PNM bills that are high due to things like summer air conditioning. When you close your account, PNM will pay you for any credits remaining on the account at Rate 12, which your can find on pnm.com/rates.
• LARGE PV PROGRAM (More than 10kW-AC of inverter capacity): PNM will pay for that NET overproduction based on Rate 12 and the payment will be applied on the same bill. NET overproduction is paid each month unlike the cumulative credit in the Small PV Program. You can find Rate 12 on pnm.com/rates.

Rebates Offered

0

Allows Standby

1

Interconnection & taps

Approval Req To Install

Yes

Interconnection Level

3

Supply Side Taps Allowed

1

Line Taps Allowed

1

Load Taps Allowed

1

Tap Criteria

Taps not allowed on ESS projects

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

120

Offset Calculation Period

0

Industry Standard Watts Sqft

2

Offset Calc Tool

Historical Usage

Metering & disconnect

Production Meter Required

Situational

Production Meter Criteria

INV>PM>AC>POI

PM = PRODUCTION METER

PV only jobs AC Disco = PV DISCONNECT

Battery only jobs AC Disco = ESS DISCONNECT

PV+Battery jobs AC Disco = PV/ESS DISCONNECT

Production Meter ONLY required 10.01 AC kW and over (Large systems), Production meter is optional up to 10 AC KW (small systems)

New Meters must be ringless even when combining Existing and New Systems. If Existing and New System is below 10 AC KW PM not Required.

*** If we are using a USE11400H-USSKBEZ8 of any variable. We MUST add a Production Meter ***

Production Meter Position

Inv-PM-Disco-POI

Production Meter Labeling

Production Meter

AC Disconnect Required

Yes

AC Disconnect Labeling

N/A

Meter Spot Process

PNM uses a single meter to accomplish net metering. Under most rate structures, no special metering is required to accomplish net metering so there is no additional cost to you to be net metered. However, if you wish to have time-of-use energy pricing as well as net metering, there will be an additional one-time PNM charge of $850 for the special metering equipment that is required. Contact PNM for an estimate of what the additional cost is for your situation. There will be additional wiring necessary if you choose to use two meters. Contact your electrician for an estimate of those costs.  

Request for TDR, add new service delivery application through the powerclerk app. Application will be reviewed and approved within 24-48 hours. You will receive an email regarding status or any other information they will need. Depending on the area, TDR may take longer to complete. (Albuquerque is busy and currently 2 weeks out). Submit application ASAP. No TDR fee.

Allowed Meter Adapter

None

Plans & docs

Site Plan Reqs

INV>PM>AC>POI

PM = PRODUCTION METER

PV only jobs AC Disco = PV DISCONNECT

Battery only jobs AC Disco = ESS DISCONNECT

PV+Battery jobs AC Disco = PV/ESS DISCONNECT

Double Check to Ensure the Below have been Completed.

1. Existing Systems will be included for 120% Offset Rule and we will need to ensure including both Existing and New for Total Annual Production Max.
2. Every Project with LEASE OR PPA FINANCING Must be verified through Powerclerk to be below 120%

• Check UBill 12 Months x 1.2= Total Annual Production Max
• PowerClerk must equal or less than the Total Annual Production Max.

Below Additional Requirements:

• IF POSSIBLE, please group the Production Meter and Disconnects within 5 ft MSP/Utility meter. All equipment should face the same direction, if possible. IF IT'S NOT POSSIBLE TO GROUP the Production Meter and Disconnects, but the BOS will be within 5' of the MSP, please add a note on the Site Plan "Production Meter & Disconnect will be within 5' from the MSP" OR include a photo with measurement to show the proposed location is within 5' from the MSP.
• IF the BOS is not "next" to the MSP on the Site Plan, this will automatically trigger PNM to request a variance or require additional proof that the proposed location of the equipment is within 5' of the MSP, which will cause extra delay.
• Production meter & AC disconnect must be within 5' of the utility meter. If not, a special placard is required.
• The AC Disconnect and Production Meter cannot exist on the same pole as the Utility Meter and Main Service Panel. You will need a unistrut structure next to the utility pole with the meters facing the same direction and within 5' of each other.
• All required equipment must be labeled with arrow callouts directly on site map. Legend labels alone are insufficient.
• Call out utility meter on site plan. If MSP is all in one, still need to call out utility meter on site plan.
• Show AC calcs on Site Plan and ELD. (If there is an existing system, include that in the calcs)
• Inverter output voltage required e.g. 240V
• See "Site Map with calcs.pdf" and "SLD with calcs.pdf" from Files section on this page.
• Info box to be included on site plan, to include manufacturer, quantity, model number
• Chem Curb is NOT allowed in PNM. Need to utilize RM5 attachments for all flat roofs. Please match wind speeds and snow loads with AHJ database
• If using Tesla Inverter, model number is required
• New production meters must be RINGLESS

Battery

• ESS Disconnect must be within 10’ or variance will be necessary.
• PV Disconnect must be within 5’ or variance will be necessary.
• If using Tesla Battery, model number is required

SLD Reqs

INV>PM>AC>POI

PM = PRODUCTION METER

PV only jobs AC Disco = PV DISCONNECT

Battery only jobs AC Disco = ESS DISCONNECT

PV+Battery jobs AC Disco = PV/ESS DISCONNECT

3 line diagram only

• Generators don’t need to go on the diagrams.
• Do NOT include EV charger in Line Diagram
• Disconnects on systems without production meters need to be within 5 feet of utility meter.
• All applications will use only CEC kW AC and DC values (found in PowerClerk) on drawing Calculations Boxes
• For projects over 10 kW AC a production meter is required. Include ESS size into 10kw
• INV > top of PM > AC Disco > POI
• Interior Line/Load Side Taps: INV > Top of PM > Non Fused Disco (Exterior) > Dedicated Load Center (Min 70A required) > POI
• If BOS and POI are more than 10' apart, or out of the line of sight, a second AC Disconnect near the POI is required.
• Be sure to include rating in the PM description e.g. "600V/100A Production Meter".
• LOAD CALCS REQUIRED if Main Panel is greater than 200A
• Use minimum #8 wire for PV Breaker Tie In from Inverter to POI
• If we Tap we need minimum #6 from Inverter to POI
• Generators and EV chargers do not need to be in the diagrams
• If using Tesla Inverter, model number is required

EXISTING SYSTEM

• For projects with an existing system, the add-on needs to combine production meters. If there is an existing Production meter, it can be eliminated, or repurposed to tie into both systems.
• We need to show exact layout of modules from the existing system. Existing system shown as one large obstruction will not suffice.

BATTERY JOBS

• LOAD CALCS REQUIRED on battery projects
• Add an ESS disconnect between the powerwall and gateway
• AC disconnect needs to be labeled PV disconnect not to confuse the two disconnects.
• Please include Battery and AC rating in STC box. For PW3 include model: 1707000-xx-y
• Please list modes of operation in battery callout.
• For PNM jobs that include Enphase Sunlight backup systems, we will need to add the following verbiage to the one line and site plan under/in the STC box: "Enphase Sunlight Backup System. PV Only backup for 4 essential loads. No Batteries or Storage Devices used here."
• To verify if the project has an Enphase sunlight backup system please refer to the 'Adders of the SOW', there will be Sunlight Backup present
• Label disconnect in front of battery as PV/ESS Disconnect.
• Label disconnect in front of generational panel as ESS Disconnect if generational panel is included in the project.
• Add Battery Modes of Operation as Backup only on STC box
• 1/19/24 WITH WHOLE HOME CONFIGURATIONS, EXPLAIN IN SITE PLAN AND ELD THAT GATEWAY IS THE NEW MAIN SERVICE
• If using Tesla Battery, model number is required. This applies to PW3 as well (PW3 model: 1707000-xx-y)
• For PW3 label AC disconnect PV/ESS Disconnect

EV Chargers

• Tesla Wall Connectors do NOT need to be shown on plans. If the AHJ does require it on plans, include a note that says "Shown on plans due to AHJ requirements, Vehicle is not exporting to grid."

Electric Service Reqs

• If existing meter is to be opened (Line tap or MBE), existing meter must be rated for 200A or more
• Must have 3ft clearance in from of main panel, we will need to relocate
• /\ /\ If existing UG service, we will need a meter spot to grandfather existing location
• Bubble meters not permitted, must upgrade if existing bubble meter or under 100A service

• Electrical Review Team \/ \/ \/ \/
• Meter needs to be 80ft or closer from utility pole (if closest point on home is not within 80ft, we need a utility engineer to give the okay on the service drop distance to be left as is or may be required to install a meter pole closer to their utility pole)
• Meter cannot be under a porch nor service line crossing a roof less than 8ft in height (service line to roof) or 4ft in length
• Weatherhead is to be 36 inches from roofline
• Middle of meter bubble must be minimum 4ft, max 5ft 6inches
• No embedded meters allowed (if opening meter, would need to bring this out)
• In the event that there is a tree in the path of where the service line will be running through (overhead), this will need to be trimmed prior to the utility energizing the MPU

Install Reqs

REC Meter and Net Meter must be grouped together and in plain line of sight.

Install a permanent, weatherproof one-line diagram at the service entrance.

There must be a utility-accessible, lockable load-break disconnect switch ("Customer Generation Disconnect") between the inverter and POI. This disconnect, which can be operated and controlled by PNM, must provide a verifiable, visible air gap. Circuit breakers and inverter software do not meet disconnect switch requirements.

Install this placard on the Customer Generation Disconnect:

"UTILITY SAFETY DISCONNECT. USE TO ISOLATE FROM CUSTOMER GENERATION."

Placards

See "Placard Sample" in Files section. Install a permanent weatherproof one-line diagram at the service entrance. Install this placard on the Customer Generation Disconnect: "UTILITY SAFETY DISCONNECT. USE TO ISOLATE FROM CUSTOMER GENERATION."

Electrical Stamp Required

0

Meter Num Req SLD 3LD

0

ESID Num Req SLD 3LD

0

Electrical Diagram Notes

PV Meter [Disconnect to be within 5 feet of utility meter]

LST [EQUIPMENT IS SERVICE RATED]

Rate Schedule Link

link

Website

link

Phone

(505) 241-2750

Other details

Restrict Inspection

1

Revision Required

1

Mod Swap Requires Planset

1

Address ID

146625

Express Planset Eligible

No