Distribution Locational Value (DLV)

The primary component of DLV, representing the deferred or eliminated capital expenditure on traditional infrastructure like substation transformers and feeder reconductoring.

• Calculated by projecting the load growth on a specific feeder and determining when a capacity violation would occur.
• A DER that reduces peak load at a constrained location provides a higher value than one in an unconstrained area.
• Value is typically expressed in $/kW-year and varies significantly between adjacent feeders.

Quantifies the reduction in resistive I²R losses on distribution lines when a DER injects power close to the point of consumption.

• Losses are proportional to the square of the current; local generation reduces the current flow from the substation.
• DLV calculates the marginal loss factor at each node, which can exceed 10% at the end of a long, heavily loaded radial feeder.
• This component is time-sensitive, peaking during hours of high system load.

The value attributed to a DER's ability to inject or absorb reactive power (VARs) to maintain voltage within ANSI C84.1 limits (Range A: ±5% of nominal).

• Smart inverters with Volt-VAR control autonomously respond to local voltage deviations.
• DLV assigns a higher value to locations with historically poor voltage regulation or high photovoltaic penetration causing reverse power flow.
• This avoids the need for standalone voltage regulator installations.

The monetized benefit of a DER's ability to island a section of the grid during an outage, providing backup power to critical loads.

• Calculated using the Value of Lost Load (VoLL) and the probability of outage duration reduction.
• A battery with grid-forming inverter capability at a hospital feeder has a dramatically higher DLV than one at a residential cul-de-sac.
• This component often justifies the incremental cost of microgrid controllers.

The locational value of avoiding carbon emissions and criteria pollutants by displacing a specific marginal generator.

• DLV integrates the marginal emission rate (kg CO₂/MWh) of the power plant that would have served that load.
• A DER in a region where the marginal unit is a coal plant has a higher environmental DLV than one displacing a combined-cycle gas turbine.
• This component is critical for regulatory filings and Non-Wires Alternative (NWA) cost-benefit analyses.

DLV is not a static value; it is a dynamic, time-varying signal that reflects real-time grid conditions.

• A typical DLV calculation uses 8,760 hourly values per year for each node.
• Peak DLV often occurs during the top 10–50 system peak hours when capacity constraints bind.
• This temporal resolution enables transactive energy markets where DERs bid into locational price signals.

The calculated cost of delivering an additional unit of energy to a specific node on the grid. While traditionally used at the transmission level, distribution-level LMP extends this concept to the medium-voltage network. DLV refines LMP by incorporating avoided distribution capacity costs and reduced line losses specific to a feeder segment, creating a more granular price that incentivizes DER dispatch precisely where congestion or voltage violations are imminent.

A planning study that determines the maximum amount of distributed generation a specific feeder can accommodate before requiring infrastructure upgrades. DLV provides the economic quantification of the constraints identified in hosting capacity maps. Where hosting capacity shows a physical limit, DLV calculates the marginal value of relief—answering not just 'can we add more solar?' but 'what is the economic benefit of adding storage at this exact node to unlock additional solar capacity?'

A time-varying import and export capacity limit calculated by the distribution utility for a specific grid connection point. DLV provides the economic rationale behind these envelopes. When an envelope constricts a customer's export, the DLV at that location is high, signaling that a battery or flexible load would capture significant value by shifting consumption or absorbing excess generation. The envelope defines the physical boundary; DLV defines the market signal within that boundary.

The use of targeted distributed energy resources to reduce peak load on a specific substation or feeder, thereby deferring or eliminating the need for traditional capital infrastructure upgrades. DLV is the valuation engine that makes NWA procurement possible. It quantifies the avoided cost of the deferred transformer or reconductor project and translates it into a locational capacity credit that can be offered to DER aggregators, creating a competitive market for grid services.

An economic and control mechanism that uses locational value signals to coordinate the real-time buying and selling of energy services between distributed resources and the grid. DLV is the fundamental input to a transactive energy market. Without accurate, granular DLV calculations, transactive systems cannot send correct price signals. DLV ensures that a battery discharging in a congested downtown network is compensated differently than one in an uncongested suburban feeder, enabling economically efficient coordination.

A smart inverter function that autonomously absorbs or injects reactive power in response to local voltage deviations. DLV quantifies the economic value of reactive power at specific locations. While Volt-VAR curves provide a standardized technical response, DLV answers the question: 'What is the avoided cost of voltage regulator tap changes or capacitor bank switching at this node?' This allows utilities to create performance-based incentives for smart inverters that provide exceptional voltage support.