Unitil (MA)

Net metering & export

Net Metering Allowed

1

NEM Type

Monthly

Post Solar Billing Method

Net Metering

Net Excess Generation Notes

The Company will notify the Host Customer within 30 days of the filing of Schedule Z whether it will allocate or purchase Net Metering Credits. If the Company elects to purchase Net Metering Credits, the Company will render payment by issuing a check to the Host Customer each Billing Period, unless otherwise agreed in writing by the Host Customer and Company.

Rebates Offered

1

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

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

No Restrictions

Offset Value

0

Offset Calculation Period

0

Industry Standard Watts Sqft

2

Utility Specific Adjustments

Net Metering & System Size Rules

• ≤ 10 kW AC → Qualifies for 100% Net Metering
• > 10 kW AC → Not eligible for NEM (will be processed as QF until further notice)
• > 10 kW AC with MassACA approval → May qualify for 60% Net Metering credit

Process Type

Simplified Process

• Single-phase UL-listed inverter systems
• ≤ 15 kW AC (single phase)
• ≤ 25 kW AC (three phase)

EPD/STD Process

• 15 kW AC (single phase)
• 25 kW AC (three phase)
• Energy storage systems
• May require transformer upgrades

System Size Justification

Load Justification

System Offset Notes

Metering & disconnect

Production Meter Required

Situational

Production Meter Criteria

Production Meter (SMART meter)

• Required for: Cash, Loan, Aura, Aura+
• Not required for: Lease projects
• Wire inverter on bottom side and utility on top side
• Only 1 production meter per project
• Second meter allowed only if 12 months have passed since existing system PTO

Production Meter Position

Inv-Disco-PM-POI

Production Meter Labeling

Production Meter

Allowed Meter Adapter

None

Plans & docs

Site Plan Reqs

• Include location of interconnection transformer, interconnecting device, point of common coupling, point of interconnection, line extension
• Show the location of all DG equipment, existing service meter, and driveway or access to facility
• AC Disconnect must be installed next to the existing utility meter. They must be moved to be located next to the existing UM

Battery Projects

• An ESS Questionnaire must be filled out by design for all battery projects. A blank copy of this form is uploaded to the Files section below titled "Unitil ESS Questionnaire."

SLD Reqs

• Show all switching and protective devices and the tie point to utility system. The one line should include all current transformers and voltage transformers with all ratios

Electric Service Reqs

Install Reqs

Meter Location

• Must be outside (unless pre-approved electrical room)
• Place on front 1/3 of home, driveway gable side, or customer-owned structure
• Must be accessible to Unitil personnel
• No fences, obstructions, or special access needed
• Location requires prior Unitil approval

Clearance Requirements

• Meter height: 5 - 5.5 feet above finished grade
• Maintain 3 ft wide × 3 ft deep clear working space
• Keep area clear of landscaping or obstructions
• Follow National Electrical Code clearance rules

Electrical Stamp Required

0

Website

link

Phone

(603) 773-6480

Other details

Restrict Inspection

0

Address ID

126258

Express Planset Eligible

Yes