From Planning to Power
Grid interconnection and power systems engineering experts providing electrical design, modeling, compliance, and software solutions for utilities, developers, energy storage, and large load projects.
Where Expertise Meets Ambition
At ZEG, we understand the challenges interconnection developers and investors face—navigating a complex, backlogged queue, managing regulatory uncertainty, and mitigating grid congestion risks that can derail timelines and drive-up costs.
Our team of transmission interconnection experts is dedicated to cutting through these barriers, providing solutions needed to accelerate clean energy projects.
70k
Megawatts
350+
Projects
80%
Coverage
Live Demo: REST® for Grid Interconnection & Site Selection Analysis
Join us for a free live demo of REST® 2.0, Zero-Emission Grid’s (ZEG) platform for scouting sites for generation and large load projects – all within a single workflow.
Wednesday | June 10th | 12:00 PM CST
CONSULTING SERVICES
Our services cover all phases of interconnection, from site selection to due diligence.
Our commitment is unwavering – we strive to be the absolute best in delivering our core services and products.
- Siting and Sizing
- NERC/FERC Compliance
- Nodal Market Analytics
- Interconnection Application
- Comprehensive Modeling
- Shadow System Impact Studies
- Electrical Studies
- Technical Due Diligence
- Engineering Stamping Services
- Reliability and Economic-Based Transmission Planning
- ISO/RTO Registration, Energization, Commissioning
- Detailed Design Packages
- Energy Yield & Performance Modeling
- Hardware-in-the-loop Testing Services
- SLD, Site Physical Layouts, String Optimization, Energy Yield Estimation
REST®: Prospect smarter. Move faster.
For developers looking to analyze a large region and determine where to build their next project. With curated grid layers, POI prospecting, exports, and a flexible dashboard, REST® allows you to track queue projects and upgrades with routine refreshes, using on-demand network models and ISO/RTO-specific methods.
Understand available capacity and infrastructure at interconnection points.
Optimize site prospecting and identify high-potential POI’s fast with actionable grid layers and constraints, to make informed siting decisions before committing to land or grid interconnection requests.
Identify grid constraints that could impact project feasibility.
Stay ahead of planned upgrades and transmission changes.
Sitra™ for ERCOT: Rapid, Transparent Grid Analysis Rapid, Transparent Grid Analysis.
For developers, investors, and buyers analyzing pre-selected sites across the ERCOT Market for feasibility and risk. Assess interconnection risk fast. ISO/RTO-specific methods, unlimited scenarios, and pay-as-you-click.
Evaluate countless scenarios, different grid conditions, regulatory changes, and future constraints.
Explore constraints, headroom and upgrade cost drivers to understand how your project interacts with existing grid infrastructure.
Assess the impact of congestion, grid upgrades, and interconnection costs.
Designed to match ISO/RTO transmission, generation, and large-load interconnection planning processes
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.