This problem is particularly noticeable in regions with a high concentration of businesses, renewable energy production or electric vehicles. Many companies are experiencing problems when applying for a new grid connection or grid reinforcements. To meet rising demand and effect feeder-level dispatch, Grid-Edge distributed energy resource management systems (DERMS) provide ops teams the localized … Demand flexibility is any load-shifting action that conserves energy by reshaping the load curve – and allows for the optimization of electricity costs while supporting the overall stability of the grid. Integrating distributed energy resources (DERs) into energy planning strategies using DERs to meet and manage capacity and congestion is a real-time adjustment capability for energy providers. The IEA report goes on to say that at least 3,000 gigawatts (GW) of renewable power projects, of which 1,500 GW are in advanced stages, are waiting in grid connection queues – equivalent to five times the amount of solar PV and wind capacity added in 2022.

Generators may be willing to pay to stay online if subsidies or support schemes reward production, while consumers benefit from cheaper power if they can use it at the right time and place. Other systems adopt zonal pricing, where prices are uniform within broad regions. In import-constrained regions, local prices can sometimes climb quite high, especially as conditions shift from hour to hour, making the situation more volatile. Power grid congestion happens when transmission bottlenecks block the cheapest available generation from meeting demand.

• This creates a negative congestion price and decreases the LMP, and it could result in potential curtailment of renewable resources.
• Geographic information about grid capacity and potential new connections is also useful when designing incentives for co-locating supply and demand.
• Instead of waiting for cables to catch up, smarter control and flexibility software now help companies and regions make better use of the capacity they already have.
• Western European countries are facing grid congestion in varying forms, but all share the imperative to balance decarbonization ambitions with infrastructure limits.
• Implementing clear KPIs supports a culture of continuous improvement, focusing on structured, performance-driven outcomes.
• To meet rising demand and effect feeder-level dispatch, Grid-Edge distributed energy resource management systems (DERMS) provide ops teams the localized …

Due to the congestion, wind projects are being moved to areas with weaker wind resources but more grid capacity, making investments https://seonote.info/getting-to-the-point-9/ less cost-effective. All but two of these 27 projects were canceled because the grid connection costs made the renewable project unprofitable, even with subsidies and mandates. Grid congestion in the Midcontinent Independent System Operator (MISO) region has caused developers to cancel wind and solar projects. The electricity grid can’t always handle these peaks because supply and demand are out of balance.

What is grid congestion and why does it matter?

These maps can be developed to enhance transparency on available grid capacity, help identify where new investments are needed and attract innovative solutions by clarifying the causes and costs of congestion. IEA analysis indicates that countries seeking to prevent or address grid congestion should adopt a proactive approach to grid expansion by means of anticipatory planning and regulatory reforms that incentivise grid investments in line with countries’ energy policy priorities. Other countries can use this collaborative and transparent approach to finding solutions to grid congestion as inspiration, and act before the situation becomes as severe. Similar trends are seen in other countries, such as Germany, where grid congestion management costs increased more than three-fold from 2020 to 2022 and surpassing EUR 4 billion. At the same time, the country’s grid capacity did not expand sufficiently to accommodate all the new electricity demand and distributed supply.

Necron Group starts construction of dual-branded Hilton hotel on Green Square

By taking a holistic approach to grid planning and development, grid operators can identify areas of high renewable energy potential and strategically allocate resources to support their integration. This helps to minimize the need for curtailment and maximize the utilization of renewable energy sources, leading to a more sustainable and cost-effective energy system. As renewable penetration increases in bottlenecked regions, curtailment becomes a growing concern, undermining both the economic and environmental benefits of clean energy. Strengthening and expanding the power grid is necessary to meet growing demand and the integration of renewable energy sources. As the United States navigates a critical energy transition, regulators across the country are calling for greater transmission system https://goodmanner.info/2019/07/11/why-resources-arent-as-bad-as-you-think/ buildout to meet anticipated electricity demand. Transparent data on grid capacity and connection requests is critical to identify bottlenecks, guide investment decisions and foster public trust.

• Many companies are experiencing problems when applying for a new grid connection or grid reinforcements.
• Solar panels, wind turbines, and other local sources now produce energy at unpredictable times.
• In such areas, solar farms and wind turbines may be regularly shut down because the grid cannot handle the power generated.
• Integrating distributed energy resources (DERs) into energy planning strategies using DERs to meet and manage capacity and congestion is a real-time adjustment capability for energy providers.

By understanding how this process works and its contribution to market volatility, curtailment, and constraint costs, we can better appreciate the complexities of today’s power markets. Also acknowledges support from the National Natural Science Foundation of China under Grant No. This research was supported by Leslie and Mac McQuown through the Center for Engineering Sustainability and Resilience and by a Resnick Award from the Institute for Sustainability and Energy at Northwestern (now the Paula M. Trienens Institute for Sustainability and Energy). The 2025 scenario is modeled according to the generation mix projection from EIA.

Renewable hotspots and curtailment dynamics

Through dynamic pricing or direct load control agreements, consumers shift flexible loads – such as EV charging, HVAC or industrial processes – to off-peak times or reduce them during critical peaks. In aggregate, widespread HEMS adoption turns homes and small businesses into active grid participants, supporting local voltage stability and even providing flexibility services back to the grid (e.g. via demand response programs). This orchestration not only protects transformers and local feeders but also maximizes fleet availability, reduces operational costs and avoids penalties from exceeding grid connection limits. For EV fleets, an EMS is critical to ensuring vehicles are charged when needed without exceeding site capacity. This coordinated approach, which links to an energy trading platform in Amsterdam, effectively creates a localized congestion market – a model now being watched by other EU countries. These measures span from speeding up construction of substations to cutting red tape, but a critical pillar is “Better Utilisation” of the existing grid.

How does congestion show up in prices?

Export-limited regions with high levels of wind and solar often experience curtailment when transmission lines become overloaded. This can be caused by either excessive demand for electricity or excessive supply, for example, peaks in renewable energy sources such as wind and solar power. Addressing grid congestion sustainably will require strategic investments in grid capacity and infrastructure, expanding transmission infrastructure and making grids more suitable for the energy sources of the future.

This market-based congestion management lets the DNO relieve specific bottlenecks at critical times, deferring the need for immediate physical upgrades. In 2022 alone, over £215 million was paid to wind generators for curtailment, on top of £806 million in the prior two years. Implementation relies on intelligent metering systems and standardized interfaces, enabling, for example, a EV charger or heat pump to pause or reduce output automatically when the DSO sends a curtailment signal. This targeted curtailment – usually applied to photovoltaic (PV) and wind – prevents overloads and stabilizes voltage without shutting down the entire plant. First, §9 of the Renewable Energy Sources Act (§9 EEG) allows grid operators to temporarily reduce grid feed-in from renewable generators when local or regional grid capacity is exceeded. On the transmission side, wind power from the north often exceeds the capacity of lines to the industrial south, forcing redispatch and curtailment that cost billions of euros each year.

• This helps to minimize the need for curtailment and maximize the utilization of renewable energy sources, leading to a more sustainable and cost-effective energy system.
• Demand flexibility is any load-shifting action that conserves energy by reshaping the load curve – and allows for the optimization of electricity costs while supporting the overall stability of the grid.
• Because demand on the electricity grid is locationally based and unpredictable, grid operators must respond in real-time in order to meet all of the needs of electricity grid participants.
• Laurens explains that although large consumers, such as energy-intensive heavy industries, sometimes develop temporary fixes for grid congestion, the critical challenge lies in scaling these solutions into permanent frameworks.
• Maximising buffer capacity through data insights and strategic partnerships could also reduce the need for costly expansions.

Share this commentary

In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. You are using a browser version with limited support for CSS. Whether you are a (young) professional, student or employer, New Energy Coalition supports your development within the energy transition. Together with Necron Group, Siemens Healthineers will help realise a future diagnostic centre designed to bring diagnostics closer to the patient and support more accessible healthcare. Health Innovation Campus Boxmeer is taking an important next step with Siemens Healthineers as a strategic partner. To get there, existing transmission lines will need to be upgraded to handle higher loads and new lines constructed to connect remote renewable energy sources to demand centres.

What does congestion mean for market participants?

As we use more solar energy, wind turbines, and other renewables, the grid must adapt. The emphasis on increased use of renewable energy sources presents a challenge as companies avoid grid congestion while balancing sources of energy. Governments and businesses are setting more stringent energy efficiency and net-zero targets to meet their voluntary and regulatory commitments.

Solar panels, wind turbines, and other local sources now produce energy at unpredictable times. Grid congestion occurs when the transmission capacity of the power grid is insufficient to meet the demand for power. For one, with the exception of battery storage located at strategic positions on the grid, transmission capacity cannot be stored at off-peak times for use during peak times. These limits protect power lines from damage, support the stability of the transmission grid, and maintain the safety of transmission corridors. This creates a negative congestion price and decreases the LMP, and it could result in potential curtailment of renewable resources.