Rausch, Lothar

Timpe, Christof

Zentrum für Europäische Wirtschaftsforschung

Assessment of Energy Consumption Decisions in Private Households

Report within the project: Soziale, ökologische und ökonomische Dimensionen eines nachhaltigen Energiekonsums in Wohngebäuden

Darmstadt

2010

Consumption in households entails in several ways the use of natural resources. The manufacture of products, the use of these products and sometimes even the treatment at the end-of-life all contribute to the overall resource use. The purchase decision today influences the use of tomorrow and the replacement afterwards. Alternative consumption choices lead to a different utilization of natural resources. It is the goal of

Table of contents

Index of tables

Index of figures

1 Introduction
1.1 Challenge
1.2 Procedure

2 Evaluation of consumer choices: Televisions
2.1 Abstract
2.2 Introduction
2.3 Methodological background
2.4 Definition of the parameters for the scenario development
2.4.1 Technical Device Classes
2.4.2 Categorisation of size
2.4.3 Efficiency index
2.4.4 Demographic trends
2.4.5 Useful life
2.4.6 Not considered parameters
2.5 Definition of scenarios
2.5.1 Scenario assumptions
2.5.2 Analysis of the purchase price for different classes of devices
2.6 Findings

3 Evaluation of consumer choices: Green power
3.1 Framework conditions for environmental additionality
3.2 Methodology for the assessment of CO2 reductions by green power
3.3 Evaluation of scenarios for measures supporting green power demand
3.3.1 Scenario 1: Business as usual
3.3.2 Scenario 2: Mandatory use of green power, no additionality requirement
3.3.3 Scenario 3: Mandatory use of green power with additionality requirement
3.3.4 Scenario 4: Voluntary green demand, but minimum additionality requirement for green power
3.4 Conclusions

4 Evaluation of consumer choices: Heating
4.1 Introduction
4.2 Methodological background
4.3 Housing typology
Sustainable energy consumption
4.4 Scenario definition
4.5 Results
4.6 Conclusions
5 References

Index of tables

Table 1: Definition of classes of size
Table 2: Assumed size changes of purchased TV sets
Table 3: Efficiency index
Table 4: Power consumption in Watt for different screen sizes and labels
Table 5: Demographic trends
Table 6: Purchase assumptions for televisions with different labels
Table 7: Summary of Scenario 1 (Business as usual)
Table 8: Summary of Scenario 2 (Mandatory use of green power, no additionality requirement)
Table 9: Summary of Scenario 3 (Mandatory use of green power with additionality requirement)
Table 10: Summary of Scenario 4 (Voluntary green demand, but minimum additionality requirement for green power)
Table 11: Housing typology
Table 12: U-values in W/m²K for building units
Table 13: Degree of heating
Table 14: Assumptions for base scenario heating
Table 15: Rehabilitation rates for base scenario heating
Table 16: Assumptions for the ′realistic and ambitious standards scenario′
Table 17: Rehabilitation rate for the ′realistic and ambitious standards scenario′

Index of figures

Figure 1: Prices and power consumption of 37″ televisions
Figure 2: Changes of total electricity consumption of television sets (authors′ own calculations)
Figure 3: Calculated GHG emissions from television use in Germany
Figure 4: CO2 emissions reductions compared to the business as usual scenario

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