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The purpose of this paper is to analyze the use of energy management and sustainability in the government sector using a study case conducted by the Permanent Program for Efficient Use of Energy at University of São Paulo (PURE-USP), a pioneer initiative of its kind active since 1997.

The paper describes the actions and results of PURE-USP.

The energy savings promoted by PURE's actions are estimated in about 25 percent after 15 years since the program was implemented. This means a saving of approximately 37 MWh or R$9 million (2.91 million) for an investment of R$1.73 million (560,000).

The results show that the program is viable and could be replicated in other Brazilian institutions or even in other countries.

PURE-USP provides in addition to electricity savings (which implies in avoiding environmental impacts) resource savings which in the case of a public institution like the University of São Paulo implies in a more efficient management of public funds.

The UK government has recently implemented the Green Deal, a new pay-as-you-save policy which seeks to fundamentally reform the existing housing stock to make it more energy efficient. Regarded by its proponents as a ‘revolutionary programme to bring our buildings up to date’ (HM Government 2010: 2), generate cash savings for householders, and simultaneously yield environmental benefits by reducing energy consumption, it promises much. However, there have been many critiques of the Green Deal from industry, environmental pressure groups and housing professionals. Moreover there has been very limited take up of Green Deal loans by householders, and those measures which have been installed offer perhaps only minimal improvements in overall energy efficiency. This paper therefore considers the potential generative and productive outcomes of the Green Deal by looking across three related issues: households with low incomes and in fuel poverty; the potential impacts on elements of the housing system; and, the extent of environmental benefits. The paper concludes by suggesting that the instead of being a revolutionary way to improve the energy efficiency of the UK’s domestic building stock, the Green Deal may potentially perpetuate existing social injustice and environmental degradation. The effort should, instead, focus on understanding how energy demand is created in the first place (e.g. desire for larger homes, energy-hungry appliances, heating in every room) through householders’ expectations and changing domestic practices.

This study aims to create an efficient approach to validate building energy simulation models amidst challenges from time-intensive data collection. Emphasizing precision in model calibration through strategic short-term data acquisition, the systematic framework targets critical adjustments using a strategically captured dataset. Leveraging metrics like Mean Bias Error (MBE) and Coefficient of Variation of Root Mean Square Error (CV(RMSE)), this methodology aims to heighten energy efficiency assessment accuracy without lengthy data collection periods.

A standalone school and a campus facility were selected as case studies. Field investigations enabled precise energy modeling, emphasizing user-dependent parameters and compliance with standards. Simulation outputs were compared to short-term actual measurements, utilizing MBE and CV(RMSE) metrics, focusing on internal temperature and CO₂ levels. Energy bills and consumption data were scrutinized to verify natural gas and electricity usage against uncertain parameters.

Discrepancies between initial simulations and measurements were observed. Following adjustments, the standalone school 1’s average internal temperature increased from 19.5 °C to 21.3 °C, with MBE and CV(RMSE) aiding validation. Campus facilities exhibited complex variations, addressed by accounting for CO₂ levels and occupancy patterns, with similar metrics aiding validation. Revisions in lighting and electrical equipment schedules improved electricity consumption predictions. Verification of natural gas usage and monthly error rate calculations refined the simulation model.

This paper tackles Building Energy Simulation validation challenges due to data scarcity and time constraints. It proposes a strategic, short-term data collection method. It uses MBE and CV(RMSE) metrics for a comprehensive evaluation to ensure reliable energy efficiency predictions without extensive data collection.

Research described in this paper focuses on a need to consult inhabitants about a new technical solution introduced in a country-wide scale like it is in the case of a smart metering system – finally, all energy consumers will become its users. Its social acceptance is required. So it is a good example of an ethical approach to introduce an innovative solution in the society. The conducted research was intended to help developing strategy to build appropriate relationships with energy consumers during the planned exchange of energy meters and to prepare energy consumers to make use of all functionality of the installed meters. The course of the conducted research and its results are presented. The paper aims to discuss these issues.

The described forms of cooperation with people are direct interviews in focus groups and a questionnaire survey involving representative social sample (surveys have been conducted during direct meetings and via internet). They are described as a case study. An agenda of each interview and also a content of a questionnaire cover topics within the area of natural environment protection, a need to save energy, individual activities leading to energy saving, smart metering, its benefits and potential threats including risk of intrusion privacy. Selected results are included.

Consultations (with energy consumers) based on focus groups and questionnaire surveys have been well accepted by the participants. Respondents feel a need to express their opinions on a given subject. Citizens' attention concerns mostly the economic aspects of a new system. Energy consumers are able to formulate and declare strong and weak points of smart meters. Some threats concerning intrusion of privacy have been expressed by respondents and included in the paper.

General conclusion is the following – each large system is not only a set of technical devices and software routines but it is also a system built by humans and for humans. Wide consultations on a smart metering bring benefits and help ensuring social acceptance. The raising social awareness of the need to save energy is one more benefit from the undertaken activities. An importance of consulting people about new solution involving all inhabitants is emphasized. Direct and structured interviews are the preferred form of social consultations. it is highlighted by some of the pollsters involved in the survey that respondents tell the truth rather in a direct conversation than in a remote mode via internet (involved pollsters have had an opportunity to check if respondents' statements are true).

The described research took place in November 2012. Earlier only technical experts and academia were involved in discussions concerning smart metering. Selected data are included to show results of the research. The presented approach may help interested parties to introduce new solution and to avoid social opposition, rejection of the idea and misunderstandings.

This paper aims to investigate how unique features of built facilities would affect the application of greenhouse gas (GHG) emissions trading, and to explore what adaptive measures may be taken for emissions trading to be applied to the built environment. Emissions trading is a financial tool to encourage GHG emissions reduction in various industries. As the building sector is responsible for a large amount of GHG emissions, it is valuable to explore the application of emissions trading in built facilities.

The analysis is based on a comparative study reviewing the current emissions trading schemes (ETSs) in Australia, Japan and the UK covering the building industry, and to evaluate the approaches adopted by the schemes to tackle the problems related to buildings and facilities management.

The research findings reveal that the small energy savings of individual building units, the large variety of energy-saving technologies and the split incentives and diverse interests of building owners and tenants would be the barriers hindering the development of emissions trading. To overcome these barriers, an ETS should allow its participants to group individual energy savings, lower the complexity of monitoring and reporting approaches and allow owners and tenants to benefit from emissions trading.

This article provides a comprehensive overview of the current emissions trading practices in the built environment. Besides, it raises the attention and consciousness of policymakers to the need that building characteristics and facilities management should be taken into consideration when designing an ETS for the building sector.

The purpose of this paper is to analyze annual energy expenditure in the presence of non-linear load and substation voltage harmonics in distribution systems. Economic assessment of non-sinusoidal energy is a challenging task that involves complex computations of harmonic load powers and harmonic line losses.

The paper evaluates fundamental and non-sinusoidal components of electrical energy by applying backward/forward sweep technique in distorted distribution systems. This work involves harmonic power computations at the substation by including harmonic losses occurring in various lines of the distribution system.

The paper found that annual energy expenditure significantly depends upon the non-linear load, supply voltage harmonics and type of tariff structure considered in the distribution system. Impact of individual harmonic orders on the energy billing is also assessed.

The paper concludes that considering harmonic distortions in the distribution system analysis would help electricity regulators formulate adequate pricing structures, which would further generate appropriate economic signals for electricity utility and the consumers.

The Recast Energy Efficiency Directive 2023 has defined the concept of “split incentive,” also known as “tenant-owner dilemma.” This dilemma refers to the situation where neither landlords nor tenants have incentives to invest in energy efficiency upgrades. Although the Energy Efficiency Directive calls Member States to overcome legal barriers to remove split incentives and to encourage retrofits, the list of possible measures is too vague. This paper aims to discuss tenancy law measures designed to increase the energy efficiency of residential housing and to detect which Member States have already addressed this phenomenon.

This paper analyses, from a civil legal perspective, the possible private law barriers arising from the tenant-owner dilemma when performing energy efficiency works in selected countries and proposes legal reforms in tenancy law and related policies to overcome them. To do so, this paper follows a legal-dogmatic and comparative law methodology.

This paper concludes that some tenancy law provisions, such as the possibility to increase the rent after energy efficiency renovations and long-term leases, may challenge the tenant-owner dilemma in private rented markets, thus promoting renovations and retrofitting for energy efficiency purposes. It also proposes other policies intended to increase parties’ willingness to undertake works.

More research on the economic and legal efficiency to regulate some of the civil law measures to challenge the tenant-owner dilemma should be necessary.

The civil law measures included in this paper may help national policymakers meet the energy efficiency targets, according to what is established in the Recast Energy Efficiency Directive 2023.

Based on the economic theory of the tenant-owner dilemma, this paper investigates the elements of tenancy law that may contribute to less energy-efficient homes, proposing policies for those countries interested in addressing the energy-efficiency challenge from a private law point of view.

The majority of research on energy feedback has been conducted in residential households; in this study, the authors aim to examine the effectiveness of similar initiatives in a college environment. The our goal was to see how much additional electricity savings could be induced using feedback beyond average savings achieved by goal-setting and to provide students information on how to conserve.

All participants set goals related to personal environmental behavior and received electricity-saving tips. Half of the participants were exposed to real-time, group-level, ambient and direct feedback of electric use for their dormitory floor through an iPad display. The control group received no feedback.

The group that received the real-time feedback reduced its consumption, whereas the control group did not. The feedback group’s change in consumption was significantly greater than the control group’s. The results are discussed in the context of injunctive norms, reminders, ambient feedback and numerical feedback, as well as the theory of planned behavior.

Further research could test for long-term effects, whether the interventions applied in this study would be effective in other university contexts and whether the interventions would influence other environmental habits apart from electricity consumption on campuses.

This is one of the first energy feedback studies to demonstrate the effectiveness of group-level data, let alone specifically in a college dormitory and has implications for influencing conservation behavior of residential college students worldwide.

The purpose of this paper is to report on the results of an Massachusetts Institute of Technology Chemistry Department campaign to reduce energy consumption in chemical fume hoods. Hood use feedback to lab users is a crucial component of this campaign.

Sash position sensor data on variable air volume fume hoods are remotely collected. A 15 minutes average fume hood sash positions for each laboratory are recorded. Data are compiled monthly and a report with average sash position over time and relative frequency of hood position are delivered to the principal investigators of the labs.

Average sash height is lowered by 26 percent (from 16.3±0.85 percent open to 12.1±0.39 percent open) throughout the department, saving an estimated $41,000/year. Sash position during inactive periods is lowered from 9 to 6 percent open. Half of all department savings occurred in four (of 25) labs. Energy savings are substantially less than original expectations because most installed fume hoods use combination sashes. Labs with vertical sashes use the most energy, and see the most savings from the intervention.

Monthly feedback is an effective tool for encouraging better hood use behavior. Potential savings from even large behavior changes can be limited if existing equipment is relatively efficient, so conservation programs should be tailored to the existing conditions.

The present analysis provides data on the impact of a program in a relatively efficient setting compared to other fume hood conservation reports. The results have cautionary value for designers of similar programs. A breakdown of a laboratory building utility use is also provided.