Solar on Multifamily Affordable Housing (SOMAH) Program
Tariff Summary

Utility Service					San Diego Gas & Electric (SDG&E)
Provider Tariff Name				SOMAH-VNEM
Effective Date				Advice 3202-E, Filed March 14, 2018
(Version)					Advice 3202-E-A, Filed June 22, 2018
Entire utility service territory

Eligibility
Applicability
•	Available to customer accounts located in the eligible housing property and listed on the Solar Allocation Form
•	Project must be participating in SOMAH
•	All solar generation will be exported to the grid and virtually allocated to the benefitting accounts as a bill credit
•	NEM-paired energy storage systems are eligible
•	20-year term or to the end of the life of the system, whichever comes first
References: Applicability
Eligible Generator
•	Grid-tied, participating in SOMAH, not oversized
References: Applicability; SC 2

Definitions
Operator
•	Not defined
Owner
•	Customer-generator owner: The enterprise, or entity, that owns the property that makes it eligible for participation in the SOMAH program
References: SC 4
Property
•	All real property and apparatus employed in a single low- income housing enterprise on contiguous parcels of land and deemed eligible by the Program Administrator, within the applicable program rules
References: SC 5

Qualified Customer (QC)
•	A QC may be a separately metered tenant located on a property participating in the SOMAH program (master-metered customers are not eligible), or is the customer-generator
•	The QC definition shall extend to customer-generator for billing common use areas and unoccupied units
References: SC 3

Billing & Costs
Relevant Period
•	12-month period
References: SC 8.d
Allocated Credit
•	Common area/tenant split will remain in effect for a minimum of 20 years
•	The individual tenant unit allocations will remain in effect for a minimum of one year
•	Owner can revise the tenant allocations after one year, which will also remain in effect for at least one year
•	Percent allocations for individual QCs must be based on the relative size of the tenant’s unit, consistent with the way credits are allocated per SOMAH program rules
Reference: SC 7; SC 8.b
Interconnection Costs
•	Interconnection application fees for PV and PV paired with energy storage projects < 1 MW is $132 and if > 1 MW is $800 plus any necessary network and/or distribution upgrade costs in accordance with Rule 21
•	If energy storage is added later, additional interconnection costs will apply
References: SC 6; SC 14.b
Rates & Mandatory TOU
•	Service on this SOMAH Virtual Net Metering tariff is in addition to the customer’s otherwise applicable rate (except for SC 13*)
•	Residential customers on this tariff are exempt from mandatory TOU, but WILL be defaulted to TOU when the time comes, but they can opt out
•	Commercial or common area accounts associated with SOMAH projects remain subject to otherwise applicable default or mandatory TOU rates
•	*Special Condition 13: All QC in a single VNEM-SOMAH arrangement who take services in combination with a TOU rate must take service on the same TOU rate structure until SDG&E’s billing system can handle multiple TOU rates in a single VNEM arrangement
Reference: Applicability; Rates; SC 13

Monthly Billing
•	Customers must pay their bill monthly; and excess energy credits will be carried over to the next month
•	Level Pay Plan not allowed on this tariff
References: SC 9
Nonbypassable Charges (NBC)
•	Customers must pay NBCs for all energy delivered by the utility (which is not offset by on-site solar generation since all solar generation is exported to the grid and virtually allocated to the benefitting accounts as a bill credit)
References: SC 2.e
Net Surplus Calculation (NSC)
•	Customers are eligible for NSC
•	Monthly excess energy credits are carried forward to the next month, until the end of the 12-month relevant period
•	Customers have the option to carry over NSC to future
12-month periods (as a bill credit) or can elect a monetary payment, if the amount is greater than one dollar ($1)

References: Applicability; SC 8.e; SC 8

System Specifications
Sizing
•	System should not be oversized when compared to the most recent 12-month consumption data
References: Applicability
Generation Output Metering Requirements
•	A separate generation output meter (NGOM) must be installed at the expense of the owner (in addition to the standard utility meters for the otherwise applicable rate)
•	Meter location must be approved by the utility
•	The SOMAH solar generator should be the only load connected to this NGOM
•	In other VNEM tariffs, generation output meter costs range from
$990-$2,950
Reference: SC 6; SC 10
NEM-Paired Storage System
•	Integrated or directly connected storage, classified as an addition or enhancement to the PV system, are allowable and must be equipped with a nonimport functionality
Reference: SC 14
Grandfathering & System Modifications
•	The system will maintain eligibility for the remainder of its 20- year term if system modifications do not exceed a 10% increase from original nameplate rating or 1 kW and does not result in an

oversized capacity compared to past annual consumption (If exceeded, the customer can meter the system addition separately or reinterconnect the entire system on an available tariff)
•	Eligible energy storage systems shall be subject to the same transition period as the generating facility to which they are connected
Reference: SC 12.a, 12.b, 12.c
Warranties
•	Not mentioned

Direct Access (DA) and Community Choice Aggregation (CCA) Customers
Applicability
•	Qualified customers who participate in direct access (DA) or community choice aggregation (CCA) are eligible for service under this schedule consistent with the services SDG&E provides to other DA and CCA customers
Reference: Applicability
Rates
•	Not mentioned
Relevant Period
•	Not mentioned
Metering Requirements
•	Not mentioned
Billing Provisions
•	Not mentioned
NSC
•	Not mentioned