Clean Energy Transmission Toolkit

Unlocking the Grid’s Full Potential for People and Wildlife

Electricity allows our communities to function; clean electricity allows our communities to thrive. Shifting the electric grid from fossil-based to healthier forms will require a massive coordinated effort that prioritizes a modern, resilient grid, and energy transmission. What exactly is transmission? Simply put, transmission moves energy. Renewable energy projects like wind and solar create the energy. Power lines and transmission towers then move that energy to the areas that need it. Building renewable and cleaner forms of energy generation means nothing if we do not have sufficient transmission infrastructure to carry it from its source to homes and businesses.

To protect our environment for future generations and provide affordable and reliable energy to our communities, electric transmission capacity must more than double within this decade. This infrastructure development must be resilient and reliable in the face of increasing severe weather events and will have significant, potential impacts on our lands, wildlife, cultural resources, and more.

The National Wildlife Federation is committed to ensuring that the values and perspectives of varied local communities, and the well-being of wildlife and our natural environment are central to accelerating America’s clean grid buildout.

Clean Energy Transmission Policy Platform

To ensure everyone in the country has access to reliable, clean, and affordable electricity, we will need to roughly triple transmission capacity over the next two decades. The National Wildlife Federation’s transmission policy platform makes recommendations for how we can swiftly increase grid capacity while minimizing impacts on people and wildlife. Recommendations include:

  • Avoiding wildlife impacts: Developers of new high-capacity transmission lines should strive to avoid key sites for wildlife, such as key migration routes. Federal and state agencies should work together to identify these sensitive habitats and to fund more research into ways to reduce wildlife impacts.
  • Creating local benefits: The developers of new high-capacity power lines should take steps to ensure that these lines don’t compound the harm to historically disadvantaged groups that are already disproportionately exposed to fossil fuel pollution. These developers should engage with communities affected by proposed lines earlier and more frequently than the legal minimums in the National Environmental Policy Act so they can design projects that benefit communities, for example by including employment guarantees or use co-ownership models. Developers should engage Indigenous Peoples and Tribal Nations according to the principles of free, prior and informed consent.
  • Using the least harmful locations: Federal, state, and Tribal governments and communities should work together to proactively identify the least harmful locations for new lines — places like former mines, industrial sites and oil and gas fields, as well as existing rights-of-way for transportation and transmission.
  • Improving existing lines: There are a large and growing suite of technological solutions that can expand the capacity and increase the stability of existing lines – but these solutions remain woefully underutilized. Another option, called “reconductoring,” would essentially rewire existing transmission corridors with higher-capacity cables that also can stand up better to extreme storms. Applying these technologies to existing structures first can help inform the buildout process.

Transmission Priorities for Federal Permitting Reform

Federal permitting reform is a key opportunity to expand and modernize the grid by improving agency coordination, streamlining reviews, and ensuring projects are sited responsibly. NWF supports a permitting framework that delivers reliable, affordable energy while protecting the nation’s lands, waters, wildlife, and communities.

NWF recommends that Congress include ten key transmission provisions in federal legislation on permitting in order to ensure a modern and reliable electric grid able to support new load growth.

Talking Points

  • Much of today’s grid is 60-70 years old and cannot meet current needs.
  • Electricity demand is rising fast. Compared to 2023 levels, demand is projected to grow by ~25% by 2030 and more than 75% by 2050.
  • AI and data centers are accelerating demand and straining local resources.
  • We can double transmission capacity by 2035 by upgrading existing lines with advanced conductors at a fraction of the cost and time of new construction.
  • Transmission planning should reflect long-term needs, using 15-20 year horizons and accounting for electrification, extreme weather, and changing demand.
  • Stronger coordination across regions and consistent evaluation of reliability, resilience, and cost benefits are essential.
  • Expanding and upgrading the electricity grid would allow us to reduce congestion costs and access cheaper forms of energy, saving $270-490B through 2050.
  • To ensure fair cost allocation, transmission costs should follow a beneficiary pays approach, ensuring that major grid users such as energy utilities and data centers, share adequately in the infrastructure costs they trigger.
  • Planning should account for reliability, congestion reduction, resilience, and impacts on low-income customers.
  • A responsibly built modern grid improves reliability, supports economic growth, and reduces the need for new corridors by making better use of existing infrastructure.
  • Transmission expansion should focus on maximizing existing grid capacity, prioritizing development along existing rights of way, and ensuring decisions are transparent and coordinated.
  • Projects should prioritize existing corridors and previously disturbed areas before proposing new routes. Clear, data-driven siting standards and transparent evaluation of alternatives can reduce conflict and improve permitting outcomes.
  • Transmission should be sited to avoid high conflict areas where possible, minimize impacts where avoidance is not feasible, and mitigate remaining impacts.
  • Early mapping of wildlife corridors, sensitive habitats, water resources, and cultural sites helps reduce conflict.
  • Meaningful early engagement with Tribes, landowners, and communities is essential to improve project design and reduce delays.
  • Considering cumulative impacts across projects is critical to protecting ecosystems.
  • Improving transmission permitting requires stronger federal capacity, including increased staffing and technical expertise.
  • Planning should better anticipate future demand by integrating large load growth, such as data centers and industrial electrification, early in the process.
  • Increasing transfer capability between regions improves reliability during extreme events and reduces price spikes by enabling regions to share resources more efficiently.
  • Permitting delays are largely driven by fragmented agency roles and inconsistent processes. Reform should focus on better coordination, shared timelines, and joint reviews across agencies while maintaining strong environmental protections and public participation. Transmission should also be treated consistently with other linear infrastructure in federal permitting.
  • Transmission permitting on federal lands should be consistent across agencies, prioritize existing corridors, and rely on coordinated reviews and adequate staffing to maintain strong environmental analysis while reducing delays.
  • Policies such as a transmission investment tax credit can help accelerate high-value projects. Incentives should prioritize projects that improve reliability, reduce congestion, and use existing rights of way to minimize impacts.

Reports

Wires and Wildlife: Transmission Development
and Western Migratory Species

Wires and Wildlife ReportUngulates and greater sage-grouse are among the many wildlife species that rely on seasonal habitats and the ability to migrate between these habitats to thrive. Energy development and other human development is rapidly transforming wildlife habitat in the western United States. Climate change can further interfere with wildlife migrations and exacerbate the impacts of other human-caused disturbances and stressors such as habitat fragmentation and degradation. This report provides recommendations for developers and decision makers to balance the need for transmission development with the climate crisis, the biodiversity crisis, and the needs of wildlife.

Wires and Wildlife: Offshore Transmission
Development and the Benthos

Marine wildlife, particularly marine mammals and fish, depend on a healthy benthos (seabed) to thrive. Natural seasonal variations, climate change, and offshore wind and the associated transmission development affects these key species and habitats. This report provides recommendations for developers and decision makers to balance the need for transmission development with the climate crisis, the biodiversity crisis, and the needs of the marine ecosystem.

State-based Materials

State-based Transmission Factsheets: Drivers and Engagement Pathways

Videos

Questions?

Contact:
Shriya Pai, Ph.D.,
Senior Transmission Policy Specialist
National Wildlife Federation