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This study aims to form a new concept of power-to-gas-based virtual power plant (GVPP) and propose a low-carbon economic scheduling optimization model for GVPP considering carbon emission trading.

In view of the strong uncertainty of wind power and photovoltaic power generation in GVPP, the information gap decision theory (IGDT) is used to measure the uncertainty tolerance threshold under different expected target deviations of the decision-makers. To verify the feasibility and effectiveness of the proposed model, nine-node energy hub was selected as the simulation system.

GVPP can coordinate and optimize the output of electricity-to-gas and gas turbines according to the difference in gas and electricity prices in the electricity market and the natural gas market at different times. The IGDT method can be used to describe the impact of wind and solar uncertainty in GVPP. Carbon emission rights trading can increase the operating space of power to gas (P2G) and reduce the operating cost of GVPP.

This study considers the electrical conversion and spatio-temporal calming characteristics of P2G, integrates it with VPP into GVPP and uses the IGDT method to describe the impact of wind and solar uncertainty and then proposes a GVPP near-zero carbon random scheduling optimization model based on IGDT.

This study designed a novel structure of the GVPP integrating P2G, gas storage device into the VPP and proposed a basic near-zero carbon scheduling optimization model for GVPP under the optimization goal of minimizing operating costs. At last, this study constructed a stochastic scheduling optimization model for GVPP.

The UK aims to reduce the carbon emissions in the building sector so as to achieve nearly zero-carbon new buildings by 2020. In 2010, a 25 per cent reduction of carbon emissions was mandated in England and Wales. The aim of this paper is to reveal how the design teams were coping with the energy regulation changes in 2010 in England and Wales.

An ethnographic methodology was selected to investigate in-depth the real-time design process in four architecture practices. The study was analysed in detail and compared the design process of six non-domestic buildings in England and Wales. The data collection methods included interviews, non-participant observation and document analysis and were conducted for a period of 12-21 months per case study.

The field findings suggest the disconnections between the project driver and the policy agenda and reveal what the design teams do to embed energy performance in routine project design.

Due to the in-depth nature of the data, no claims for generalisation or representativeness are made. However, the detailed analysis of the real-time design process reveals the designers’ enactment of the policy agenda, which is in essence a timeless phenomenon about policy intervention and performance-based regulations.

The designers’ enactment of and responses to the policy changes become an analytical tool to infer lessons that can be learned from the process and lead to the achievement of expected carbon reductions and the success of the policy intentions.

During the great post–World War II economic expansion, modernization theorists held that the new American capitalism balanced mass production and mass consumption, meshed profitability with labor's interests, and ended class conflict. They thought that Keynesian policies insured a near full-employment, low-inflation, continuous growth economy. They viewed the United States as the “new lead society,” eliminating industrial capitalism's backward features and progressing toward modernity's penultimate “postindustrial” stage.⁷ Many Americans believed that the ideal of “consumer freedom,” forged early in the century, had been widely realized and epitomized American democracy's superiority to communism.⁸ However, critics held that the new capitalism did not solve all of classical capitalism's problems (e.g., poverty) and that much increased consumption generated new types of cultural and political problems. John Kenneth Galbraith argued that mainstream economists assumed that human nature dictates an unlimited “urgency of wants,” naturalizing ever increasing production and consumption and precluding the distinction of goods required to meet basic needs from those that stoke wasteful, destructive appetites. In his view, mainstream economists’ individualistic, acquisitive presuppositions crown consumers sovereign and obscure cultural forces, especially advertising, that generate and channel desire and elevate possessions and consumption into the prime measures of self-worth. Galbraith held that production's “paramount position” and related “imperatives of consumer demand” create dependence on economic growth and generate new imbalances and insecurities.⁹ Harsher critics held that the consumer culture blinded middle-class Americans to injustice, despotic bureaucracy, and drudge work (e.g., Mills, 1961; Marcuse, 1964). But even these radical critics implied that postwar capitalism unlocked the secret of sustained economic growth.

The purpose of this paper is to identify the factors present in successful energy efficiency investments that might indicate how to resolve the landlord-tenant dilemma in existing and new commercial property.

The paper reviews literature to indicate the importance of energy efficiency in buildings and to explore the barriers to such investments, including problematic landlord-tenant relationships. Such relationships have been investigated by the International Energy Agency, and a similar approach is used here in two case studies in new and existing buildings. These studies explore the nature of landlord-tenant relationships and the importance of policy and standards of building performance.

In neither case did landlord-tenant issues constitute barriers to investments in energy efficiency, however, these investments were made for other reasons than simple cost savings. Construction of new commercial property to Passivhaus standards ensures a high-build quality and a comfortable building with low-energy costs. The added value to tenants may justify the cost of construction. The cost of investments in energy efficient buildings can also be justified by the enhanced reputation of landlords which may be more valuable than a DEC rating. In neither case was the commercial Green Deal felt to be an attractive funding mechanism.

Conclusions based on these case studies must be regarded as tentative, so future studies of successful energy efficient buildings should be undertaken to explore the motivation to invest, particularly the relative importance of indirect benefits of energy efficiency.

One of the case study buildings is exceptionally energy efficient and is the result of a particularly open and effective contractual relationship. Further study of such cases may suggest a new approach to landlord-tenant problems of energy efficiency, even in refurbishment of existing buildings.

The purpose of this study was to design a renovation plan for a university campus building (Department of Electrical and Computer Engineering) with the aim to achieve nearly zero energy performance, ensuring a low specific demand (lower than 44 kWh/m²) and a high level of on-site renewable generation (equivalent to more than 20 per cent of the energy demand).

The baseline demand was characterized based on energy audits, on smart metering data and on the existing building management system data, showing a recent reduction of the electricity demand owing to some implemented measures. The renovation plan was then designed with two main measures, the total replacement of the actual lighting by LEDs and the installation of a photovoltaic system (PV) with 78.8 kWp coupled with an energy storage system with 100 kWh of lithium-ion batteries.

The designed renovation achieved energy savings of 20 per cent, with 27.5 per cent of the consumed energy supplied by the PV system. This will ensure a reduction of the specific energy of the building to only 30 kWh/m², with 42.4 per cent savings on the net-energy demand.

The designed renovation proves that it is possible to achieve nearly zero energy goals with cost-effective solutions, presenting the lighting renovation and the solar PV generation system a payback of 2.3 and 6.9 years, respectively.

This study innovated by defining ambitious goals to achieve nearly zero energy levels and presenting a design based on a comprehensive lighting retrofit and PV generation, whereas other studies are mostly based on envelope refurbishment and behaviour changes.

Connecting autonomous drones to ground operations and services is a prerequisite for the adoption of scalable and sustainable drone services in the built environment. Despite the rapid advance in the field of autonomous drones, the development of ground infrastructure has received less attention. Contemporary airport design offers potential solutions for the infrastructure serving autonomous drone services. To that end, this paper aims to construct a framework for connecting air and ground operations for autonomous drone services. Furthermore, the paper defines the minimum facilities needed to support unmanned aerial vehicles for autonomous logistics and the collection of aerial data.

The paper reviews the state-of-the-art in airport design literature as the basis for analysing the guidelines of manned aviation applicable to the development of ground infrastructure for autonomous drone services. Socio-technical system analysis was used for identifying the service needs of drones.

The key findings are functional modularity based on the principles of airport design applies to micro-airports and modular service functions can be connected efficiently with an autonomous ground handling system in a sustainable manner addressing the concerns on maintenance, reliability and lifecycle.

As the study was limited to the airport design literature findings, the evolution of solutions may provide features supporting deviating approaches. The role of autonomy and cloud-based service processes are quintessentially different from the conventional airport design and are likely to impact real-life solutions as the area of future research.

The findings of this study provided a framework for establishing the connection between the airside and the landside for the operations of autonomous aerial services. The lack of such framework and ground infrastructure has hindered the large-scale adoption and easy-to-use solutions for sustainable logistics and aerial data collection for decision-making in the built environment.

The evolution of future autonomous aerial services should be accessible to all users, “democratising” the use of drones. The data collected by drones should comply with the privacy-preserving use of the data. The proposed ground infrastructure can contribute to offloading, storing and handling aerial data to support drone services’ acceptability.

To the best of the authors’ knowledge, the paper describes the first design framework for creating a design concept for a modular and autonomous micro-airport system for unmanned aviation based on the applied functions of full-size conventional airports.

The case study demonstrates that China and the Kingdom of Saudi Arabia’s (KSA) energy transformation strategies share many similarities and enjoy a great degree of complementarity. This complementarity is not limited to the territory of the two nations, but has become a successful vehicle for joint Sino-KSA investments in the Arab peninsula as well as in the Middle East and North Africa. Leading to a new paradigm that runs along the lines of China’s staggering Belt and Road Initiative, the convergence of policies represents a new reality due to its potentiality to influence not only the energy sectors of the largest Arab’s economy and world’s most powerful one, but also over their partners.

The purpose of this paper is to establish the feasibility and benefits of forming a cross‐industry corporate sustainability association, Corporate 21, comprised of leading reputable corporations around the world.

Such an association would require an even reporting structure and a formal sustainability agenda – Corporate Agenda 21. In determining the latter, this paper drew initiatives from 12 current cross‐industry corporate social responsibility (CSR) reports; inclusion is based on repeated findings and potential global application of initiative.

It is debated that such an association would serve to further strengthen the role of business in the modern sustainability and CSR movement, insofar as it would offer increased cross‐industry collaboration through a collective plan of action in the field.

The paper would benefit from a broader range of CSR report analysis, including all reports from leading corporations in fields of CSR, sustainability and innovation. A subsequent study should also develop a benchmarking system for all Corporate Agenda 21 initiatives.

A unified sustainability blueprint and shared cross‐industry CSR collaboration would provide the most beneficial plan of action for business by working: first, reverse the image “corporate” has globally; second, offer money‐saving solutions and healthy profit attainment at the heart of its programs; third, allow companies to supersede inevitable governmentally imposed environmental and social regulations; fourth, create inter‐company synergy through effective global intent; provide member corporations with a competitive market advantage; and finally, foster an innovative business environment.

Such an association would provide a new forum from which business would have increased understanding and greater leverage in social and environmental responsibility and innovation.

The wide uptake of green building is hindered by factors such as limited market demand and high up-front cost despite substantial policy incentives. Successful business models (BMs) help facilitate the diffusion of sustainable innovation and have attracted increasing attention. However, little attention has been paid to examining the adoption of green building from the perspective of BM. This paper aims to identify the characteristics of BM that companies adopted to deliver green building projects and examine the evolution path of BM for green buildings.

A total of 744 interdisciplinary bibliographic records related to BM and green buildings from the Web of Science Core Collection database have been identified from the Web of Science Core Collection and analyzed through co-author analysis, co-word analysis and co-citation analysis.

BM research mainly focuses on five subjects, namely, environmental science, engineering, business, economics, science and technology. Keywords “strategy”, “capability”, “perspective” and “design” receive the highest centrality index, which suggests that the strategy design and corporate capability are indispensable elements when designing or innovating a company's BM. “BM canvas” and “resource based view” received the burst citations in the recent decade. Twelve research clusters are identified, including performance evaluation, waste management, energy efficiency, BM, project business, professional capital, leadership and product innovation. These topics highlight three evolution direction for green building projects, i.e. life cycle-oriented value proposition, collaborative value delivery and innovative cost and revenue structure.

The findings contribute to a systematic understanding of the underlying mechanisms of BM for green buildings and illuminate the development trend of business strategies for sustainability.