Publications of S. Koeppel

Analysis of electricity consumption in the tertiary sector of Hungary

The tertiary sector, which is responsible for about a third of the total national electricity consumption,could be a significant contributor to energy saving and greenhouse gas mitigation targets in Hungary. For evidence-based design of such policies, it is important to understand the reasons behind the dynamics of the electricity consumption and its structure. According to the authors’ investigation, there has been no research-focused, targeted project aimed at electricity monitoring in tertiary sectorbuildings in Hungary as of 2006. To address this gap in knowledge, a research team at the Central European University (CEU) analyzed electricity consumption in 10 tertiary buildings in Hungary in the framework of the European project El-Tertiary (Monitoring Electricity Consumption in the Tertiary Sector). The methods used by CEU included a minimum of 2-weeks on-site measurements of lighting, major electrical appliances such as office equipment, kitchen appliances, heating, ventilation and air-conditioning (HVAC), as well as analysis of documents such as energy bills, electricity plans and energy supply contracts. In addition, a survey was conducted among the building managers. The paper details the preliminary results of the project implementation in Hungary. It investigates the electricity consumption and its composition in a set of studied buildings. It also identifies the opportunities for potential technical and behavioural electricity savings and the reasons why they are neglected by building owners or occupiers in Hungary. The results indicate significant potential for energy savings in tertiary sector buildings in Hungary. However, energy consumption is not a high priority among tertiary sector building owners and occupiers in the tertiary sector in Hungary and even the most low-hanging fruits for reducing energy consumption are often not picked up. Instead, renovations and new constructions of educational sector buildings often lead to an increase in energy consumption because more new appliances are purcha sed. Although the modern schools possessed more efficient electronic equipment, including liquid crystal display (LCD) monitors and florescent tubes and compact fluorescent lamps (CFLs), they were also characterized by the highest energy consumption due to the elevated number of computers and office equipment, as well as additional comfort elements, such as air conditioning and vending machines.

The electricity consumption structure and saving potential for electricity in buildings of the Hungarian tertiary sector

The tertiary sector, which is responsible for about a third of the total national electricity consumption,could be a significant contributor to energy saving and greenhouse gas mitigation targets in Hungary.For evidence-based design of such policies, it is important to understand the reasons behind the dynamics of the electricity consumption and its structure. According to the authors’ investigation, there has been no research-focused, targeted project aimed at electricity monitoring in tertiary sector buildings in Hungary as of 2006. To address this gap in knowledge, a research team at the Central European University (CEU) analyzed electricity consumption in 10 tertiary buildings in Hungary in the framework of the European project El-Tertiary (Monitoring Electricity Consumption in the Tertiary Sector). The methods used by CEU included a minimum of 2-weeks on-site measurements of lighting, major electrical appliances such as office equipment, kitchen appliances, heating, ventilation and air-conditioning (HVAC), as well as analysis of documents such as energy bills, electricity plans and energy supply contracts. In addition, a survey was conducted among the building managers. The paper details the preliminary results of the project implementation in Hungary. It investigates the electricity consumption and its composition in a set of studied buildings. It also identifies the opportunities for potential technical and behavioural electricity savings and the reasons why they are neglected by building owners or occupiers in Hungary. The results indicate significant potential for energy savings in tertiary sector buildings in Hungary. However, energy consumption is not a high priority among tertiary sector building owners and occupiers in the tertiary sector in Hungary and even the most low-hanging fruits for reducing energy consumption are often not picked up. Instead, renovations and new constructions of educational sector buildings often lead to an increase in energy consumption because more new appliances are purchased. Although the modern schools possessed more efficient electronic equipment, including liquid crystal display (LCD) monitors and florescent tubes and compact fluorescent lamps (CFLs), they were also characterized by the highest energy consumption due to the elevated number of computers and office equipment, as well as additional comfort elements, such as air conditioning and vending machines.

An appraisal of policy instruments for reducing buildings’ CO2 emissions

The building sector currently contributes approximately one-third of energy-related CO2 emissions worldwide. It is economically possible to achieve a 30% reduction. However, numerous barriers such as financial and behavioural issues, market failures, and misplaced incentives prevent the realization of the high economic potentials. Which policy instruments are the most appropriate and cost-effective for reducing these barriers? To address this question, 20 policy instruments were assessed for their effectiveness in reducing emissions, cost-effectiveness, applicability and special conditions for success. The appraisal is based on over 60 ex-post policy evaluation reports from about 30 countries and country groups, representing best-practice examples of the application of these instruments. Appliance standards, building codes, tax exemptions and voluntary labelling were found to be the most effective policy instruments contrary to others such as Kyoto Protocol flexible mechanisms or energy/carbon taxation. The most cost-effective instruments, all achieving energy savings at negative costs for society, were appliance standards, demand-side management programmes and mandatory labelling. Since all policy instruments have limitations and only help overcome some barriers, they are most effective if combined into policy packages designed for the respective location, economy and culture

Appraisal of policy instruments for reducing buildings' CO2 emissions

The building sector currently contributes approximately one-third of energy-related CO2 emissions worldwide. It is economically possible to achieve a 30% reduction. However, numerous barriers such as financial and behavioural issues, market failures, and misplaced incentives prevent the realization of the high economic potentials. Which policy instruments are the most appropriate and cost-effective for reducing these barriers? To address this question, 20 policy instruments were assessed for their effectiveness in reducing emissions, cost-effectiveness, applicability and special conditions for success. The appraisal is based on over 60 ex-post policy evaluation reports from about 30 countries and country groups, representing best-practice examples of the application of these instruments. Appliance standards, building codes, tax exemptions and voluntary labelling were found to be the most effective policy instruments contrary to others such as Kyoto Protocol flexible mechanisms or energy/carbon taxation. The most cost-effective instruments, all achieving energy savings at negative costs for society, were appliance standards, demand-side management programmes and mandatory labelling. Since all policy instruments have limitations and only help overcome some barriers, they are most effective if combined into policy packages designed for the respective location, economy and culture.

Is there a silver bullet? A comparative assessment of twenty policy instruments applied worldwide for enhancing energy efficiency in buildings

While the commercial and domestic building sectors account for 33 % of all energy-related CO2 emissions worldwide, approximately 30 % of this energy consumption can be saved economically. However, numerous barriers such as hidden costs and benefits, distorted energy pricing, imperfect information, market failures and misplaced incentives prevent the realization of these energy saving potentials. For this reason, countries apply a variety of policy instruments such as building codes, energy efficiency obligations, subsidies and information campaigns. Since these instruments differ considerably in terms of their effects and costs, a research project conducted under the framework of the Fourth Assessment Report of the Intergovernmental Panel on Climate Change has reviewed more than 60 ex-post policy evaluation reports for the 20 most commonly used policy instruments from app. 30 countries worldwide. The paper presents the results of this exercise regarding the environmental effectiveness and cost-effectiveness of these instruments, as well as identifies special conditions for their success.While most policy instruments achieved significant energy savings, appliance standards, building codes, tax exemptions and labelling were revealed as most effective policy instruments. Other instruments such as Kyoto Protocol flexible mechanisms or taxation have been less successful in the building sector. Several policy instruments achieved energy savings at negative costs for society; most cost-effective in our sample were appliance standards, demand-side management programs and mandatory labelling. Since no single policy instrument can capture the entire potential for energy-efficiency, buildings require a diverse portfolio of policy instruments for effective energy use reductions and for taking advantage of synergistic effects.