• Big renewable capacity additions reduce the need for fossils. Renewables account for more than half of the overall installed capacity for the first time, with wind and solar contributing the most. For conventional power plants, the installed capacity remained stable.
• Electricity demand fell significantly, playing a key role in cutting Europe’s reliance on fossil fuel.
• The fall in gas prices led to lower electricity wholesale prices, but remain higher and more volatile than before the energy crisis. Imbalance- and intra-day prices followed the trends in the day-ahead market.
• The EU faced record negative wholesale prices due to the speeding up of renewable growth to meet sustainability goals.
• Further interconnectivity and enhanced EU electricity market integration is still needed including tackling barriers to cross-zonal trade and reinforcing the EU network.

What are the key findings of ACER’s barriers to demand response report?

• Many barriers to demand response persist (e.g. difficulties to access markets, lack of national rules, some retail electricity prices do not send proper price signals, etc.). Collectively, these significantly impact the market. Incentivising demand response should remain a priority for policy makers.

• Price spikes signal opportunities: price spikes and negative prices are more and more frequent, sending clear signals on when and where there is a need to increase supply or cut or shift demand.

• A proper legal framework for new actors to enter the electricity markets and system operation services is still missing in many Member States.

• Many consumers still need smart meters and incentivising retail electricity contracts to cut or shift their energy consumption.

• There is limited participation of distributed energy resources (e.g. consumers or batteries) in balancing services, congestion management services and capacity mechanisms.

• Some retail markets are not sufficiently open to new actors and competition.

• Some retail price interventions dampen price signals needed to activate demand response. On top of the price interventions introduced as emergency measures in response to the energy crisis, at least thirteen Member States have interventions in the retail electricity prices that predated the energy crisis. Most do not provide signals for demand response activation.

• Since 2020, some progress has been made in several countries (e.g. improving their national legislation, relaxing some requirements to provide balancing services or making their capacity mechanisms more inclusive).

ACER's public consultation from 19 December 2023 to 2 February 2024 aimed to gather stakeholders' inputs on the prioritisation of strategies for overcoming barriers to demand response. Based on the inputs received, ACER will focus its 2024 market monitoring work on the most relevant barriers.

Main challenges of market integration

• The main challenge of electricity market integration is long-term markets. It is important to improve liquidity in the European forward markets. Member States’ Transmission System Operators (TSOs) must ensure sufficient capacity is available for cross-zonal trading when needed, especially in the short-term markets, which are now developed (coupled) throughout Europe, and face the challenge of ensuring cross-zonal capacity availability. The next significant step in the market evolution is the development of long-term markets.
• Scarce forward hedges have increased liquidity in the spot market. Hedging is a simple way to manage crisis uncertainty. However, measures like collateral requirements and high bank guarantees forced some market participants to switch from organized forward trading to spot or bilateral trading (potentially increasing volatility).
• On balancing markets, the limited engagement of TSOs and data availability are hindering the success of balancing platforms.
• In 2022, congestion income (i.e. the revenue generated as a result of congestion in electricity transmission systems) increased by more than three times compared to 2021 across Europe, accompanied by a surge in remedial costs (challenging overall price stability). Member States can address congestions without additional operating costs (i.e. grid topology change, phase shifter transformer usage). On the other hand, remedial measures (like re-dispatching, countertrading, or curtailment of allocated capacities) can come at a significant cost – potentially discouraging the deployment of renewable energy sources (RES).

What are ACER’s recommendations?

• Improve cross-border electricity trade to strengthen market integration (and its resilience).
• Advance the progress of forward electricity markets by expanding their development and utilizing Long-Term Transmission Rights (LTTRs) for hedging.
• Reinforce the engagement of TSOs in balancing markets. This could be done by considering slower balancing reserves to manage price fluctuations more effectively.
• Manage re-dispatching expenses and promote the deployment of renewable energy sources, particularly in those regions with high RES-generation potential. This will clearly support the energy transition goals and ensure compliance with the legal requirement to stay below the 5% curtailment limit.

What is the report about?

ACER’s Report on cross-zonal capacities and the 70% margin available for cross-zonal electricity trade:

• Highlights the need for maximizing cross-zonal trading to reach the EU’s clean energy goals;
• Evaluates progress towards achieving the 70% target by the end of 2025;
• Analyses the main barriers to cross-zonal trading and outlines what Member States and Transmission System Operators (TSOs) can do to lift them; and
• Illustrates the impact on welfare and on price spikes of offering low cross-zonal capacity levels in day-ahead electricity markets.

ACER's public consultation in September 2023 collected stakeholders' views on the report's findings.

ACER’s assessment of emergency measures is timely:

• As energy and fiscal policy makers consider next steps now to cope with persistent short-term energy challenges;
• With Member States starting to re-evaluate their energy emergency support measures in the context of falling energy prices;
• Given recent calls (by certain EU bodies) for fiscal policy (in the current high inflation environment) to be targeted, tailored and temporary.

Lessons from 2022 can help Member States determine where and when to direct any future energy support measures, to those in need.