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In diesem Gutachten wurde untersucht, welche Optionen zur Gestaltung eines marktbasierten haushaltsunabhängigen Verpflichtungsansatzes zur CO2-Minderung im deutschen Gebäudebestand bestehen. Die Analyse erfolgte technologieoffen und berücksichtigte neben Sanierungsmaßnahmen zur Steigerung der Energieeffizienz auch einen verstärkten Einsatz CO2-armer/erneuerbarer Energien. Das Verpflichtungssystem soll in der Lage sein, die bestehenden Treibhausgas (THG)-Minderungsziele im Gebäudebestand möglichst kostengünstig auf kurz- und langfristig sinnvolle Weise zu erreichen und sich gut in das bestehende Förderinstrumentarium integrieren lassen.
The European electricity market is linked to a carbon market with a fixed cap that limits greenhouse gas emissions. At the same time, a number of energy efficiency policy instruments in the EU aim at reducing the electricity consumption. This article explores the interactions between the EU's carbon market on the one hand and instruments specifically targeted towards energy end-use efficiency on the other hand. Our theoretical analysis shows how electricity demand reduction triggered by energy efficiency policy instruments affects the emission trading scheme. Without adjustments of the fixed cap, decreasing electricity demand (relative to business-as-usual) reduces the carbon price without reducing total emissions. With lower carbon prices, costly low emission processes will be substituted by cheaper high emitting processes. Possible electricity and carbon price effects of electricity demand reduction scenarios under various carbon caps are quantified with a long-term electricity market simulation model. The results show that electricity efficiency policies allow for a significant reduction of the carbon cap. Compared to the 2005 emission level, 30% emission reductions can be achieved by 2020 within the emission trading scheme with similar or even lower costs for the industrial sector than were expected when the cap was initially set for a 21% emission reduction.
Dieses Wuppertal Paper dient dazu, a) die mögliche Klimaschutzwirkung eines CO2-Preises zu analysieren, allein und im Gesamtpaket von Instrumenten zum Klimaschutz, b) die Möglichkeiten der Mittelverwendung zu analysieren und zu bewerten, c) dadurch den Dschungel der Argumente und Motivationen in den bestehenden Vorschlägen zu lichten und d) aus der Analyse ein Modell zu skizzieren, das den Anforderungen von Klimaschutz und sozialer Gerechtigkeit sowie Erhalt der Wettbewerbsfähigkeit am besten gerecht wird und damit der Bundesregierung als Anregung bei der Entscheidung über Einführung und Ausgestaltung eines CO2-Preises dienen kann.
Im Folgenden werden diese Fragen anhand von neun Thesen mit einem abschließenden Fazit ergründet.
Improvements in energy efficiency have numerous impacts additional to energy and greenhouse gas savings. This paper presents key findings and policy recommendations of the COMBI project ("Calculating and Operationalising the Multiple Benefits of Energy Efficiency in Europe").
This project aimed at quantifying the energy and non-energy impacts that a realisation of the EU energy efficiency potential would have in 2030. It covered the most relevant technical energy efficiency improvement actions in buildings, transport and industry.
Quantified impacts include reduced air pollution (and its effects on human health, eco-systems), improved social welfare (health, productivity), saved biotic and abiotic resources, effects on the energy system and energy security, and the economy (employment, GDP, public budgets and energy/EU-ETS prices). The paper shows that a more ambitious energy efficiency policy in Europe would lead to substantial impacts: overall, in 2030 alone, monetized multiple impacts (MI) would amount to 61 bn Euros per year in 2030, i.e. corresponding to approx. 50% of energy cost savings (131 bn Euros).
Consequently, the conservative CBA approach of COMBI yields that including MI quantifications to energy efficiency impact assessments would increase the benefit side by at least 50-70%. As this analysis excludes numerous impacts that could either not be quantified or monetized or where any double-counting potential exists, actual benefits may be much larger.
Based on these findings, the paper formulates several recommendations for EU policy making:
(1) the inclusion of MI into the assessment of policy instruments and scenarios,
(2) the need of reliable MI quantifications for policy design and target setting,
(3) the use of MI for encouraging inter-departmental and cross-sectoral cooperation in policy making to pursue common goals, and
(4) the importance of MI evaluations for their communication and promotion to decision-makers, stakeholders, investors and the general public.
