Austin Energy

Net metering & export

Net Metering Allowed

No

TOU Utility

No

Post Solar Billing Method

Feed-in-Tariff

Solar Export Type

Fixed kWh

Solar Export Rate

0.0991

Solar Export Value Notes

link

Rebates Offered

Yes

Deregulated

Yes

Allows Standby

No

Interconnection & taps

Approval Req To Install

No

Supply Side Taps Allowed

Yes

Line Taps Allowed

Yes

Load Taps Allowed

Yes

Tap Criteria

Line Side Taps are prohibited on MLO or Hot Bus Panels that cannot Accept Main Breaker Kits, or when the Load Center Cover does not have a knockout for the main breaker

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

110

Offset Calculation Basis

Historical

Offset Calculation Period

12

Industry Standard Watts Sqft

2

Utility Specific Adjustments

The Following items require a flag to the branch to repair:

• Service Conduit broken
• NEC Working Clearance
• Meter Location
• No Exterior Main SER/Rag Riser. <<< IMPORTANT

See Austin Energy Necessary Service Repairs file in the file section below for images.

Inverter Oversize Restrictions

Yes

Restriction Percent

115

System Size Justification

Load Justification

System Offset Notes

TSRF of the system must have average of 75% or above to comply with Austin Energy's rebate program.

Utility meter without housing will need to be upgraded

Minimum System Size: 3 kW-ac (3.6 kW-dc), or 2.5kW-ac (3kW-dc) if sized to meet at least 80% of annual consumption.

Maximum System Size: PV systems shall not be sized to produce more than 110% of the annual energy consumption of the connected load. This shall be determined based on historical usage for existing buildings or modeled consumption for new construction or alterations. System designs exceeding 110% of demonstrated consumption must include a letter of justification for the sizing

Offset Calc Tool

Utility Tool

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

Tesla Backup Switch

Plans & docs

Site Plan Reqs

• The solar disconnect cannot be more than 10 feet from the line side tap (NFPA 70)
• 2018 Fire Setbacks required (even if AHJ not required)

SLD Reqs

• Anytime we repair/replace, it has to be a 200A minimum service. If we are just doing MPU then it can match with the existing service
• AC disconnect and PV meter always need to be beside each other
• Derate is not allowed
• Production meter is REQUIRED - Meter housing MUST BE Austin Energy Meter Can and must be a minimum 200 amp bypass handle. (Eaton - UTH 5213 CCH OR Milbank U4801‐XL‐5T9)
• Show AC Surge arrester (Tie-in MSP with 20A 2P)
• Min size Ground is #6 for entire system, minimum conductor from inverter to POI is #6
• NABCEP Certification number required along with staff's name
• 60A AC Disconnect minimum
• 2020 NEC enforced for emergency disconnect and surge protector
• Main must be equal to or less than the meter sockets rating
• SE digital stamps on corresponding PV pages and PE Letter/Calcs.

BATTERY JOBS

• Austin Energy does not accept DC-Coupled battery systems
• EE stamps required on battery projects.
• If batteries increase potential system (solar+ storage) size to 50 KW or more, that must submit the DGPA to AE for review. Such systems pose significant risk to back-feed the grid. for future clarification,
• Batteries must be fully charged at inspection.
• If installing in a garage, UL listed heat detector or smoke alarm is required.

Electric Service Reqs

• Anytime we repair/replace, it has to be a 200A minimum service. If we are just doing MPU then it can match with the existing service
• No Load ST on auxiliary Subpanels.
• Line ST must have a main breaker in the panel
• Backfeed Breaker and LST should hit meter first, not disconnect
• If line side tap needs to happen on side main breaker of the panel then please reach out to the AHJ for clarification
• DNR (Disconnect and Reconnect, Utility Shut Off) required if Underground Service Conduit is damaged.
• Full-size Neutral required (can not be downsized)
• Austin Energy does not allow anything to cover the meter including porches, or pergolas. If the Meter is underneath a porch or pergola, send to Electrical review for Meter relocation.

Install Reqs

2” clearance around meter can

3' clearance from the front

Height of the PV Meter needs to be within 36" and 72" measure from grade to the center of the meter socket

Conduit entry into the PV Meter must utilize Pre-determine Knock-Out (Can not make own hole)

Roof Required >10 years of life remaining (No Waiver - ReRoof Only)

The solar meter can is installed right-side-up physically, but wired backward as compared to the utility meter.

Attic run conduit need to be FMC/EMT conduit (Must follow the structure of the Building both vertical and horizontal)

Meter can be mounted with steel or metal fastener (Can not be plastic)

No meter installation is required, only install the 200A Meter Can with bypass switch; AE will install the Meter

Placards

- A directory/plaque of all DG/DER sources including contact information shall be provided as per NEC Articles 690 and/or 705. - Reference also AE Design Criteria Manual 1.9.1.7. - Address #s 2” high, black on white can be on the solar meter can, the main panel, OR AE meter - Need to have Red on White Arrow point to the direction of the Rapid Shutdown device. * The directory or plaque must be permanent - simple stick-on labels are not allowed. * A rapid shutdown label shall be installed in accordance with NEC Article 690. * The plaque must also include information on any standby systems or energy storage system.

Electrical Stamp Required

Yes

Electrical Diagram Notes

All Jobs [Type II surge arrestor to be installed in accordance with Austin Energy Interconnection Guide]

Rate Schedule Link

link

Website

link

Phone

(512) 494-9400

Other details

Revision Required

Yes

Mod Swap Requires Planset

Yes