Evaluate Countless Grid Scenarios & Perform Rigorous Grid Due Diligence
Sitra™ is a cloud-based tool for grid due diligence and interconnection modeling in ERCOT, helping energy teams quickly evaluate constraints, costs, and project feasibility with data-driven precision.
ANALYZE, OPTIMIZE AND DE-RISK
Analyze, optimize, and de-risk your energy project with Sitra™.
Powered by innovative cloud-based automation, Sitra™ allows you to assess interconnection risks by quickly analyzing any number of what-if scenarios and performing investment-grade grid due diligence using a wide range of input assumptions tailored by you and to your market insight. platform.
Sitra™ capabilities include:
- Built by Transmission Experts for Transmission Customers
- Test unlimited 'what-if' scenarios
- ISO/RTO Specific Methodology
- Pay-as-you-Click
- On-demand network models built using latest and greatest network data
- For Generation, Energy Storage, Large Load Developers
BY TRANSMISSION EXPERTS
Sitra™ was developed by seasoned interconnection engineers who’ve partnered with ISOs, RTOs, and TOs to plan transmission and evaluate interconnection requests.
INNOVATIVE GRID NAVIGATION
De-risk generation and demand-side investments by analyzing countless “what-if” scenarios to navigate interconnection uncertainty with speed and clarity.
FOR ALL ENERGY PLAYERS
Whether developing or investing in generation, storage, or large loads, Sitra™ adapts to your pace and process—delivering insights on your terms.
Leverage Sitra™ to streamline grid due diligence and decision-making by:
Identify Limiting Grid Contingencies
Surface N-1/N-k constraints and stress points that drive curtailment or restudies.
Determine Available Transmission Capacity
Quantify headroom on key elements and POIs to guide feasible interconnections.
Estimate Allocated Transmission Upgrade Costs
Forecast upgrade exposure and allocation scenarios early in the siting process.
Pinpoint Helper/Harmer Resources
Identify resources that relieve constraints—or exacerbate them—under key scenarios.
Discover Transmission Distribution Factors
Trace power-flow sensitivities to understand how injections impact the network.
Insights that allow you to validate before comitting.
Sitra™ is engineered by transmission interconnection experts to deliver transparent due diligence and rapid multi-scenario analysis—so your grid decisions are fast, defensible, and investor-ready.
Sitra™ for Grid Due Diligence Data-Driven
Beyond early site screening, Sitra™ provides the rigor investors and developers need to validate projects before committing capital.
Evaluate transmission capacity, market conditions, and regulatory requirements with ISO/RTO-specific methodology—so every decision is grounded in traceable data.
Learn moreSitra™ for What-If Scenarios Unlimited Cases
When the grid changes, so can your strategy.
Test limitless “what-if” cases—from queue reforms and voltage constraints to new generation and large-load additions—to see how shifting conditions affect capacity and upgrade costs in seconds.
Learn moreGRID DUE DILIGENCE
The Difference with Sitra™
Sitra™ delivers a user-friendly interface, transparent data with no black-box dependencies, and pay-as-you-click flexibility—while giving you full control over assumptions, unlimited “what-if” scenarios, on-demand access to the latest grid data, and actionable analytics in seconds.
FAQ's
Since 2022, ZEG has been dedicated to advancing the future of power grid interconnection. We provide tailored consulting services to developers, asset owners, operators, independent power producers, and other key stakeholders, with a focus on building a sustainable, renewable energy grid.
Our team consists of industry veterans with over 70 years of collective experience in power grid consulting, electric utilities, and renewable development. This diverse expertise enables us to deeply understand the unique challenges of our clients and support their decarbonization goals effectively.
ZEG works with a wide range of clients, including developers, asset owners, operators, independent power producers, and other stakeholders in the energy sector. We collaborate closely with both industry leaders and forward-thinking customers committed to driving a sustainable, zero-emission power grid.
At ZEG, we believe that collaboration is key to overcoming the inertia of the industry. We partner with stakeholders to drive a zero-emission, reliable power grid. Our approach is rooted in agility, creativity, and innovation, which are the principles that inspire our mission and services.
Our team brings extensive knowledge and expertise to help our clients achieve their decarbonization goals. We provide customized solutions, strategic advisory services, and innovative tools to support the transition to a renewable, sustainable energy grid. Through our services, we help clients navigate the complexities of the power grid interconnection process.
Yes, ZEG operates across all major North American ISOs/RTOs, including CAISO, ERCOT, ISONE, MISO, PJM, SPP, WECC, and SERC, covering 80% of the U.S. power grid.