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Chapter 6

Customer generation

This chapter provides you with PSE’s rules and requirements to interconnect
and operate customer-owned and installed generation sources in parallel with
PSE’s electric distribution system. Customer generation sources include fuel cell,
hydroelectric, biomass, solar, or wind power generators. Customer generation does
not include emergency power generators.

Responsibilities

Puget Sound Approval of customer generation installations by PSE is required ahead of
Energy construction. Failure to obtain approval ahead of construction may result in delays
and unanticipated costs for any corrections necessary.
PSE’s Customer Solutions and meter engineering groups will review and approve all
customer installation designs. PSE will provide and install net and production meters.

Customer All customer electrical equipment must comply with the NEC and any state or
local code requirements. Any system capable of exceeding 25 kW may require a
dedicated transformer.

General requirements

Customer-owned generators up to 100 kW may be connected to and operate in
parallel to PSE’s facilities in accordance with Electric Tariff G, Schedule 150, Net
Metering Service for Renewable Energy Systems.
The design of these systems shall meet PSE’s standards for voltage flicker and
harmonics and will be served by PSE at a standard service voltage (see Chapter 1,
Table 2).

What to submit with applying for interconnection

Customers should apply for interconnection, net metering, and production metering
using Electric Schedule 150 Attachment B or EZ Agreements. Customers should
read through Electric Schedule 150 and 151 for more information on how the state
incentive works. A three-line wiring schematic should accompany all applications
and agreements.

Electric Service Handbook 2017 — Single-Family Residential Projects 55