GETting the Most Out Of Existing & New Infrastructure Via Advanced Transmission Technologies
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In this webinar, local governments and other stakeholders will learn about advanced transmission solutions, including grid-enhancing technologies (GETs) and high-performance conductors. The webinar will cover the mechanics and purpose of these technologies and feature expertise from regulators and subject matter experts. We will also discuss transmission capacity expansion needs, incentives, and how local governments can become involved in transmission-related conversations.
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GETting the Most Out Of Existing & New Infrastructure Via Advanced Transmission Technologies
- 1. IMAGE: FLICKR/MICHAEL MULLER GETting the Most from Existing & New Infrastructure via Advanced Transmission Technologies July 25, 2023
- 2. HOUSEKEEPING The audience is in listen-only mode. Please add questions to the Q&A, and we will address them at the end. The recording and slides will be shared with registrants and posted on the WRI website. Please don't discuss anything at issue in contested proceedings, but high-level concepts are OK
- 3. SPEAKERS Allison Clements Commissioner, Federal Energy Regulatory Commission Marissa Gillett Chairman, Connecticut Public Utilities Regulatory Authority Gilbert Bindewald III Principal Deputy Assistant Secretary, Office of Electricity, Department of Energy
- 6. TRANSMISSION NEEDED, BUT HOW TO SPEED ACCESS AT LOWER COSTS? https://eta-publications.lbl.gov/sites/default/files/lbnl-transmissionvalue-fact_sheet-2022update-20230203.pdf
- 7. MANY WAYS TO MAXIMIZE TRANSMISSION CAPACITY & EFFICIENCY https://inl.gov/content/uploads/2024/02/23-50856_R8_-AdvConductorszScan-Report.pdf • Transmission right of way (ROW): strip of cleared land to accommodate towers and lines, clearance needed for safety • Higher voltages require wider ROW • Higher currents heat line, create sag => safety issue • But ways to increase amount of current, make components more efficient, raise towers NY Energy Solution project: double circuit rebuild with 115 kV on left and 345 kV on right
- 9. GRID-ENHANCING TECHNOLOGIES (GETS) Dynamic Line Ratings (DLRs) • Adjusts line limits based on real-time conditions Topology Optimization • Software that informs how to optimize power flow in real-time Advanced Power Flow Control • Devices that can help direct power flow Better real-time information, modeling, and add-on tech can improve use of existing lines. Most commonly discussed:
- 10. EXAMPLE OF HOW INFO HELPS https://www.energy.gov/oe/articles/advanced-transmission-technologies-report
- 11. • MT House Bill 729 (2023) enabling PSC to establish ROI incentives for utilities to adopt advanced conductors States • Order 881 (2021) requiring transmission owners to adopt ambient- adjusted line ratings & opened dynamic line ratings proceeding FERC • Proposed efficiency standards • Reports on GETs and advanced conductors • Research, grant programs, stakeholder engagement DOE WAYS TO HELP ADVANCED TRANSMISSION TECHNOLOGIES OVERCOME BARRIERS Not exhaustive lists, only some examples
- 12. RESOURCES • WATT Coalition: What Are Grid-Enhancing Technologies? • Idaho National Laboratory: Grid Enhancing Technologies • Grid Strategies, LLC: Advanced Conductors on Existing Transmission Corridors to Accelerate Low Cost Decarbonization • RMI: GETting Interconnected in PJM • NRDC: Lost in Transmission: World’s Biggest Machine Needs Update Resources on GETs and HPCs • PJM Cities and Communities Coalition • WRI: The Federal Energy Regulatory Commission: How It Functions and Why It Matters for Communities WRI Links
- 13. Thank you! Jennie Chen Senior Manager, Clean Energy jennie.chen@wri.org Ian Goldsmith Research Analyst ian.goldsmith@wri.org
Editor's Notes
- Check out our last webinar that discussed how you can get involved in FERC proceedings DOE has similar comment processes States typically have similar stakeholder input processes
- Mention Ian, Zach, Mansie, Joseph Will intro speakers Then do super quick background before discussion Talk about concepts: how to get more from existing and new build Will not dwell on various tech and alphabet soup, provide some examples and fill in as needed during discussion There is a list of resources cataloguing various Adv Trans Tech and GETs available, listed at end of slide deck, and DOE has some great ones Get into barriers and ways to over come them with speakers Superstar speakers from different parts gov with influence over trans. Excited about their collective thinking on ATTs Commissioner Allison Clements joined FERC in December 2020 following a range of public and private sector experience in energy law and grid modernization policy. She has and is participating in FERC decisionmaking over rules impacting ATTs. Chairman Marissa Gillett took office in April 2019 at CT PURA, and was formerly MD PSC. On Joint Fed St task force along with Comm Clements. PDAS Gil Bindewald has worked for DOE for over 20 years, grid tech expert and engineer by training.
- Much of the power grid was built in the 60s and 70s but some of it is over 100 years old. Today, we are increasingly relying on the grid to enable power sharing between neighboring regions to ensure reliability during extreme weather, deliver low cost clean energy to customers, and support growing electricity demand from electrification, manufacturing, data centers/AI/cryptomining, indoor ag, etc. Question for this webinar, how can we make the best use of what we have + what we build?
- Renewables (and other resources) located across US, not necessarily where most demand is located, need transmission But note: Transmission is a resource-neutral form of infrastructure—all resources need transmission For example, not shown: gas plays Gas would be more reliant on T as well if we didn't have dedicated pipelines for gas
- Map illustrates regions where generation is high compared to load leading to neg prices, but only have data for regions with transparent markets Bottled up RE generation, both transmission constraints and the fact that markets have boundaries too Note locations of load issues and growth: Winter storm Elliot in 2022 Winter storm Uri in 2021 Significant load growth in SE for EVs & batteries ERCOT, SPP, NY, and AZ semiconductors & electronics PJM datacenters, etc
- Goal: maximize transmission capacity along given ROW, reduce energy loss, while maintaining safety ROW width determined by V – can widen to accommodate more power For given width, can try to increase current and reduce energy loss Advanced conductors, many technologies, some quite mature – Trans about $2M per mile, conductors typically about 2% - 5% or less of cost. Can roughly double capacity, reduce line losses. One example: older tech on left, ACCC pictured on right. Also, Superconducting wires, HVDC Special Coating on wires and more easily dissipate heat Distribution transformers – standards for more efficient version NY Energy Solution project: consortium of utilities pieced together a route, primarily using land that was previously used for lower capacity 115-kV lines. The project removed the existing 1930’s structures and rebuilt double circuit structures with both a 115-kV and a 345-kV line on the same route, using high-capacity ACSS conductors. A portion of the line used existing 345-kV structures, which were reconductored with higher capacity ACSS with E3X. Voltage increases can increase capacity than simply reconductoring, although requires wider right of way. Rebuilding a 115-kV line to 345 kV with high-temperature conductors can achieve a 12-fold increase in capacity or higher, but could increase the ROW width from 100 to 150 feet.
- New York LS Power Project – 2021 ROW was designed to accommodate ~15MW/ft, but underutilized •Change 230kV H frame circuit across Central East New York State •Replace with monopole 2 x 345kV •Execution time <2 years Metric: power density => maximize it
- DLR not tech, but using tech to get more information (more next slide) TO – same, about modeling SCED Market – assume grid as is, dispatch gen and storage (need to work on dispatchable load) TO – assume dispatch as is, how to change grid by opening/closing switches Power flow: current flows along path of least impedance + more information, better modeling + better operations + devices that can direct power flow
- Discuss utility business model and barriers to new tech Want to think of ways to encourage adoption of mature cost-effective tech at scale Want to incentivize innovation and efforts to continue to improve efficiency and capacity of grid without necessarily specifying technologies Discuss FERC, State, DOE jurisdiction and capabilities, offer examples, not exhaustive Stakeholder processes to provide comments or initiate proceedings Transition to discussion with speaker, emphasize no discussion of open contested proceedings