San Diego Infrastructure Underwriting: Pricing Outage Exposure into the NOI Line
For San Diego property owners, power reliability is an operating consideration with potential consequences for resident services, building operations, and cash flow. Public Safety Power Shutoffs (PSPS) are a last-resort wildfire-mitigation measure, but an outage can continue after the immediate fire-weather risk has passed: SDG&E must inspect affected equipment and address safety issues before restoring service.
That timing matters in real estate underwriting. An outage does not automatically produce a specific financial loss or change a property’s value. But exposure can be identified, documented, and modeled: alongside utility costs, insurance, maintenance, and other operating risks. For multifamily and commercial owners, the underwriting question is not simply whether an outage might occur. It is which property functions depend on grid power, what an interruption could cost, and whether resilience infrastructure can reduce that exposure.
PSPS risk is operational risk
SDG&E describes a PSPS as a temporary shutoff in certain areas when strong winds, dry conditions, and other factors create significant wildfire risk. The utility may begin customer notifications approximately 48 hours before a possible shutoff, with further updates as conditions change. That advance notice can support preparation, but it is not a guarantee of the exact shutoff time or duration.
Restoration also depends on more than improved weather. SDG&E says crews need daylight to patrol de-energized lines and equipment, identify hazards, and complete repairs before service can safely return. A PSPS may last several hours or multiple days, depending on conditions and required inspections.
For an owner, this means the exposure window should not be modeled as a simple, fixed outage duration. Circuit location, property systems, weather, inspection requirements, and repair needs all matter. A nearby building with power does not necessarily indicate that the property’s circuit has been restored.
SDG&E’s PSPS information and restoration process provide current operational details for owners and managers.
Translate outage exposure into an underwriting schedule
An outage analysis can begin with a practical inventory of property functions and their dependency on electricity. At a multifamily community, that may include elevators, access controls, lighting in common areas, domestic-water pumps, hot-water equipment, communications, and fire-life-safety systems. At a commercial property, it may include refrigeration, tenant operations, security, IT, building controls, and equipment required to maintain safe occupancy.
The next step is to identify plausible cost categories, rather than assume a single loss figure:
Operating response: Staff time, resident communication, temporary services, and emergency coordination.
Interrupted property functions: Constraints on elevators, water service, access, or building systems.
Income and occupancy exposure: Potential disruption to tenants, business operations, leasing, or resident retention.
Recovery and repair: Equipment inspection, resetting controls, and addressing damage or service interruptions.
Insurance and financing: Policy terms, deductibles, exclusions, lender requirements, and business-continuity assumptions.
The underwriting model can then organize these items into a base case and a defined outage scenario. The scenario should make assumptions explicit: affected systems, estimated duration, mitigation already in place, and costs that are recoverable or insured. Separate recurring expenses from contingent losses, and avoid treating a one-time disruption as a permanent reduction to NOI without evidence.
This distinction is important in valuation. If a documented, recurring operating expense is reduced, that may improve NOI. A hypothetical avoided loss, by contrast, should not be booked as income. It may still inform a risk narrative, reserve planning, or lender discussion, but it should be supported by credible assumptions rather than presented as guaranteed value creation.
Habitability and continuity are related, but not identical
For residential properties, California Civil Code Section 1941.1 lists baseline characteristics associated with habitability, including electrical lighting and equipment in good working order, heating facilities in good working order, and access to hot and cold running water through an approved system.
A PSPS is a utility safety action, and the fact of an outage does not, by itself, establish a landlord’s legal responsibility or determine whether a dwelling is legally untenantable. The facts, duration, affected systems, applicable agreements, and circumstances matter. Owners should coordinate with qualified legal counsel and local authorities on property-specific obligations.
Operationally, however, the standards point to the importance of knowing what an outage could interrupt. Owners should have protocols for resident communication, critical building systems, safety checks, and escalation to relevant service providers. Documenting the outage timeline and response can also help distinguish utility interruption from building-system failure.
California Civil Code Section 1941.1 provides the statutory baseline. It is a useful underwriting reference, not a substitute for legal advice.
Battery storage: demand management plus resilience infrastructure
Battery storage can serve two complementary roles: managing energy use during normal operations and supporting selected loads when utility service is interrupted. The first role can contribute to utility expense management; the second is a resilience function. Together, they make storage a potential infrastructure asset rather than simply an emergency accessory.
System design should begin with the property’s critical-load profile. Owners and engineers need to determine what the battery is intended to support, for how long, and under what operating conditions. A battery sized for a limited set of critical circuits should not be described as whole-building backup. Transfer equipment, controls, battery duration, charging strategy, safety requirements, and commissioning all affect what the system can actually do.
This is also where Utility Margin Capture™ connects to resilience planning. Rooftop generation and storage can be evaluated as part of a coordinated strategy to reposition energy costs and improve control over selected building functions. The business case should account for capital structure, operating costs, system performance, and the value of load coverage, not assume that every outage is avoidable or that every dollar of exposure can be eliminated.
Include financing and tax assumptions in project review
A resilience project affects underwriting through its costs, its operating profile, and its financing structure. Owners should test how proposed capital and operating commitments flow through NOI and debt-service coverage ratio (DSCR), then evaluate any expected effect on expense-ratio compression and asset valuation. These results depend on actual project terms and performance; they should not be assumed in advance.
Standalone energy storage may qualify for the federal Section 48E clean electricity investment credit under applicable rules. In general, the credit framework includes a base rate and a higher rate that may be available when prevailing-wage and apprenticeship conditions are met; qualifying storage capacity below one megawatt may also be eligible for the higher rate without those requirements. The statutory definition includes a minimum storage capacity, but that threshold is not a design recommendation for a multifamily or commercial property.
For projects beginning construction on or after January 1, 2026, additional material-assistance rules related to prohibited foreign entities may affect eligibility. Credit rules, procurement requirements, construction timing, and project facts all require review. Owners should confirm current guidance with qualified tax and legal advisors before relying on any credit in a financing model. The IRS overview of investment tax credits and its prevailing wage and apprenticeship guidance are useful starting points, not project-level tax advice.
Make outage exposure a measurable assumption
For San Diego assets, PSPS belongs in the operating-risk discussion because the interruption can affect building services and the timeline for restoring them. The right response is not to assign a speculative penalty to every property. It is to identify essential loads, model plausible disruption costs, review operational and financing assumptions, and evaluate whether storage can provide a defined level of support.
That process gives owners a clearer basis for comparing resilience investment with the cost and risk of continued exposure. Under Rooftops Into Revenue™, solar generation and battery storage are considered as infrastructure, with underwriting tied to NOI, DSCR, expense management, and long-term asset performance.
Save On Solar Now is a national energy infrastructure firm helping multifamily and commercial property owners convert utility expense into structured revenue. Through Rooftops Into Revenue™ and Utility Expense Repositioning, we design and deploy solar generation, battery storage, electrical upgrades, and structured financing solutions aligned with asset performance and portfolio scalability.
Explore Rooftops Into Revenue™.
Phone: (858) 400-3524
Web: saveonsolarnow.com
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