Through newly enacted grid utilization legislation, HB 434 and SB 621, utilities must take a closer look at how effectively they are using the infrastructure already in place. Rather than focusing solely on where new infrastructure should be built, the legislation encourages utilities to better understand, measure, and optimize the capacity available across their existing networks.
By October 15, 2026, Virginia's Phase I and Phase II utilities (Dominion and Appalachian Power) must submit petitions to the Virginia State Corporation Commission (SCC) that establish grid utilization metrics, evaluate current system performance, and compare existing operations against optimal utilization levels.
The legislation reflects a growing recognition that increasing capacity is not always about building more infrastructure. In many cases, it is about understanding where capacity already exists and how it can be used more effectively.
As utilities face rising demand from electrification, data centers, and distributed energy resources (DERs), the ability to unlock capacity from existing assets is becoming increasingly important.
This marks a fundamental shift in planning philosophy. Utilities are moving from a build-first mindset toward a utilize-first approach.
The legislation requires utilities to propose grid utilization metrics and transparent methodologies for measuring and reporting utilization at the substation level on a seasonal basis.
Among the required metrics are:
Ratio of peak load to total system capacity
Ratio of current delivered load to total possible deliverable load
Percentage of electricity lost during distribution
Utilities must also:
Define utilization metrics for SCC approval
Assess current performance against optimal utilization
Demonstrate how metrics are calculated
Provide transparent and defensible reporting methodologies
These requirements create a need for repeatable analytics that can withstand both regulatory scrutiny and internal planning review.
The new legislation requires utilities to evaluate how effectively existing infrastructure is being utilized before investing in new assets.
For utilities managing rising demand and growing interconnection volumes, understanding available capacity becomes a strategic advantage.
Better visibility into grid utilization can help utilities:
Reduce unnecessary infrastructure investments
Improve affordability for customers
Accelerate customer interconnections
Increase transparency into system constraints
Support more informed planning and investment decisions
Rather than relying solely on infrastructure expansion, utilities can identify opportunities to optimize utilization of the existing grid and prioritize investments where they create the greatest impact.
While the goals of HB 434/SB 621 are clear, achieving them is not always straightforward.
Many utilities lack a complete and auditable picture of utilization across their networks due to challenges such as:
Siloed operational and planning data
Incomplete or outdated network models
Reliance on static snapshot analyses
Limited visibility into seasonal and temporal constraints
Difficulty producing repeatable, regulator-ready results
Perhaps most importantly, traditional planning approaches often rely on peak-load assumptions that provide only a partial view of network performance.
A feeder that appears constrained during a single peak hour may have significant available capacity throughout the rest of the year. Conversely, a circuit that appears healthy under average conditions may experience localized constraints during specific operating periods.
Understanding when capacity is available is becoming just as important as understanding where it exists.
Grid utilization is dynamic. Load patterns change throughout the day. DER output fluctuates with weather conditions. Seasonal variations affect both customer demand and network loading.
As a result, utilization cannot be fully understood through static analysis alone.
A time-series approach provides deeper visibility into:
Seasonal utilization patterns
Constraint duration and frequency
Asset loading behavior over time
Available capacity under varying conditions
Opportunities to defer or avoid upgrades
This level of insight helps utilities move beyond static, conservative assumptions and make more data-driven decisions about capacity management and investment planning.
In the context of HB 434/SB 621, understanding when capacity is available may be just as important as understanding where it exists.
To comply with the new legislation, utilities need a trusted foundation for understanding capacity across the network.
The Intelligent Grid Platform (IGP) transforms fragmented utility data into a validated, computable digital grid model that supports utilization analysis at scale.
With the IGP, utilities can:
Create validated digital grid models
Analyze utilization across feeders, transformers, and substations
Perform seasonal and time-series evaluations
Quantify available versus constrained capacity
Generate repeatable and auditable reporting outputs
Support data-driven planning and investment decisions
The foundation is a trusted network model that combines topology, asset, customer, and operational data into a single analytical environment. A validated digital representation of the network provides the foundation for defensible analytics, planning studies, and regulatory reporting.
Several applications within the Intelligent Grid Platform help utilities establish the transparency needed for utilization-focused planning.
Grid Transparency helps utilities understand where capacity is available and where constraints exist across the network.
Time Series Control Center enables seasonal and time-based analysis that reveals utilization patterns and constraint hours beyond traditional peak-load snapshots.
Grid Connection Navigator improves capacity transparency by helping utilities and customers better understand available capacity across the network.
Grid Scenario Simulator allows planners to evaluate future utilization scenarios, identify emerging constraints, and prioritize investments based on measurable system needs.
These capabilities help utilities move toward a scalable, utilize-first planning strategy.
HB 434/SB 621 may be one of the clearest examples yet of a broader shift occurring across the U.S. utility industry.
Utilities are increasingly being asked to:
Maximize existing infrastructure before proposing upgrades
Improve capacity transparency
Reduce upgrade costs
Accelerate customer interconnections
Demonstrate efficient use of ratepayer-funded assets
The implications extend well beyond regulatory compliance. As Luigi Montana, CEO of envelio Inc, observed:
"The goal is to increase system utilization and decrease investment needs associated with load growth. This follows the strong industry focus on affordability and could become a model adopted by additional states across the country."
Virginia's broader policy direction is not limited to utilization reporting. Through SB 508, the state is also encouraging utilities to identify and leverage surplus interconnection service at existing generation facilities. While this legislation addresses a different aspect of grid planning, it reflects the same underlying objective: finding opportunities to unlock additional capacity from existing infrastructure before investing in entirely new assets.
As utilities face growing demand from electrification, DER adoption, and economic development, understanding how to maximize existing infrastructure is becoming a strategic planning priority. Virginia's legislation may be an early indication of how regulators across the country will increasingly evaluate grid utilization and infrastructure efficiency.
Virginia's new legislation signals a shift in how utilities evaluate capacity, prioritize investments, and plan for future growth.
As utilization requirements evolve, utilities need scalable and transparent ways to understand where capacity exists, when it is available, and how it can be used most effectively.
By combining validated digital grid models with advanced time-series analysis, utilities can move beyond static assumptions and unlock actionable insights from existing infrastructure.
The result is smarter planning, greater transparency, and a stronger foundation for managing the grid of the future.
Contact envelio to discuss how the Intelligent Grid Platform can support your utilization and capacity planning initiatives.