Technical Aspects of Nodal Pricing

This workshop report by the Climate Policy Initiative (CPI) examines the technical challenges of implementing nodal pricing in European power markets to facilitate the integration of intermittent renewable energy. It compares the European approach, including the EU Target Model, with the experience of US Independent System Operators (ISOs) and PJM, focusing on the conflicts between market flexibility and system security, the integration of energy and reserve markets, and the use of shadow prices to inform grid investment.

• Integrating intermittent generation creates a conflict between market participants' desire for flexibility to change production on short notice and Transmission System Operators' (TSOs) need for time to analyze and adjust dispatch to maintain system security. In Europe, regulators allow generators to nominate output 30 to 60 minutes before real-time, known as the gate closure.
• The separation of energy and reserve markets in Europe can lead to inefficient production decisions for generators with small portfolios who struggle to align volume and time-slots. In contrast, the integrated energy and reserve market in the PJM region has resulted in 14 GW of demand contracted for reserve and response, which is 7% of installed capacity, allowing demand flexibility to replace fossil generation as a primary source of system flexibility.
• The US experience shows that nodal pricing and the use of Independent System Operators (ISOs) can significantly reduce operating margins. For example, PJM's 'Western' operational limit decreased from approximately 20% of capacity 15 years ago to 1% of capacity today, whereas some European Interconnectors maintain transmission reliability margins of about 50%.
• The EU Target Model aims for a common framework by 2015 using a flow-based approach to calculate transmission capacity between zones. This process involves identifying critical network elements, deriving a DC approximation of the AC network, and determining generation shift keys (GSKs) to translate generation units to zones.
• US Independent System Operators (ISOs) act as intermediate institutions that integrate short-term market and system perspectives. This model allowed US transmission owners to retain asset control and avoid the risks of system operation, while providing a transparent platform for day-ahead and intraday market clearing that supports longer-term hedging via reference prices.
• Shadow prices emerging from congestion management based on the physical grid can quantify the value of transmission expansion and inform investment decisions. In US nodal pricing markets, generation investment is partly informed by these prices, though investors use financial transmission rights to hedge against future congestion changes.

APA

Neuhoff, K., & Boyd, R. (2011). Technical Aspects of Nodal Pricing. Climate Policy Initiative. https://www.climatepolicyinitiative.org/wp-content/uploads/2011/12/Technical-Aspects-of-Nodal-Pricing-Workshop-Report.pdf

Chicago

Neuhoff, Karsten, and Rodney Boyd. Technical Aspects of Nodal Pricing. Climate Policy Initiative, 2011. https://www.climatepolicyinitiative.org/wp-content/uploads/2011/12/Technical-Aspects-of-Nodal-Pricing-Workshop-Report.pdf.

Wikipedia

{{cite report |last1=Neuhoff |first1=Karsten |last2=Boyd |first2=Rodney |title=Technical Aspects of Nodal Pricing |publisher=Climate Policy Initiative |date=23 September 2011 |url=https://www.climatepolicyinitiative.org/wp-content/uploads/2011/12/Technical-Aspects-of-Nodal-Pricing-Workshop-Report.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{neuhoff2011technical, author = {Neuhoff, Karsten and Boyd, Rodney}, title = {{Technical Aspects of Nodal Pricing}}, institution = {Climate Policy Initiative}, year = {2011}, month = sep, url = {https://www.climatepolicyinitiative.org/wp-content/uploads/2011/12/Technical-Aspects-of-Nodal-Pricing-Workshop-Report.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }