According to Martínez et al. (2021), the concept of the Smart Sustainable Campus (SSC) represents a dynamic intersection between sustainability imperatives and technological innovation in higher education institutions (HEIs). Its emergence is rooted in two foundational trajectories: the environmental sustainability movement in academia and the digital transformation of institutional operations (Rane, 2023). Historically, HEIs have played an instrumental role in advancing the sustainability discourse, particularly since the 1990 Talloires Declaration, which was the first official commitment by HEI leaders to environmental sustainability (Lan and Shizhu, 2025). It was then followed by such global initiatives as the United Nations Decade of Education for Sustainable Development (2005–2014), Rio + 20 Outcome Document (2012) and acceptance of Sustainable Development Goals (SDGs) in 2015 that all in one strengthened the requirement of being able to incorporate sustainability in educational processes, as well as operational and community engagement (Sugandha et al., 2025; Reihaneh and Marzieh, 2023; Hiltunen et al., 2022).

Concurrently, Sen et al. (2021) pointed out that the rapid growth of digital innovations, including the Internet of Things (IoT), Artificial Intelligence (AI), cloud computing, and data analytics, has enabled campuses to digitalise the operations and streamline the management of resources in real-time (Alshuwaikhat et al., 2022). This digital transformation was first framed under the “smart campuses” tag, centring on efficiency and user experience. Nonetheless, the increased understanding of climate change, resource depletion, and equity concerns led to the synthesis of the smart and sustainable paradigms, which resulted in the emergence of the SSC model complex, technology-enhanced, and sustainability-centred campus framework (Negri et al., 2021). The SSC therefore presents a strategic transition from linear, resource-use-based campuses, bound by compartments and compartmentalised governance, to adaptive, participatory, circular systems in line with planetary boundaries and socio-technical resilience (Mohammed et al., 2022). This is because of growing external pressures on HEIs to reduce their environmental footprint, model climate leadership, and educate future sustainability practitioners (Pacini et al., 2025). As such, the SSC has come as not only an upgrade of technology but also a revolutionary institutional design, which has multidimensional repercussions on the structure of infrastructure, morale of governance, teaching and learning methods and interactions with the stakeholders (Jiao et al., 2024; Zainullah et al., 2024; Yan et al., 2023).

According to Malagnino et al. (2021), transitioning from a conventional campus to a Smart Sustainable Campus (SSC) is not just about technology; it is a paradigmatic shift of how HEIs view and operationalise sustainability. Traditional campuses operate on fragmented systems in which facilities management, academic departments, and student affairs feel like silos, with no shared sustainability objectives or interoperable sustainability data (González-García et al., 2023). Such campuses are traditionally described by operational inefficiencies in the usage of resources, numerous fixed assets, and responsive approaches to maintenance and environmental responsibility are minimal. In addition, as asserted by Rieckmann and Bormann (2020), sustainability efforts, when present, are more project-driven than systemic, lacking institutional anchoring or long-term strategic planning. The SSC model envisions the campus as a living laboratory (Azzali and Sabour, 2018), particularly a dynamic, data-rich environment that incorporates sustainability and technology at every level of operation (Adeyemi et al., 2018). At the core of this model, there lies the idea of interconnectivity, as physical systems (e.g., energy grids, water infrastructure, transportation networks), digital systems (e.g., IoT sensors, campus apps, cloud platforms), and social systems (e.g., student and staff behaviours, governance frameworks) all interact collectively to enable the system to adapt through decisions and continual enhancements (Weil et al., 2023; Jawad et al., 2023; Esfilar et al., 2021).

Rey-Hernández et al. (2023) underscored that a significant distinction lies in how governance and sustainability evaluation are approached. Whereas traditional models still heavily rely on manual audits and trailing indicators, SSCs use real-time dashboards and predictive analytics to monitor performance and simulate interventions (Kolokotsa et al., 2016). This empirical framework is capable of analysing in detail the patterns of resource consumption; identifying inefficiencies early enough is the foundation of designing policies based on evidence. Pan et al. (2023) stated that integrating Building Information Modelling (BIM), digital twins, and smart metering enables advancements in SSC operations. As SSCs become able to transcend the reactive management practices of conventional campuses and move toward anticipatory and resilient operations (Domínguez-Bolaño et al., 2024; Olawumi et al., 2023; Alshuwaikhat et al., 2022). Alrashed (2020) stated that, on a par with the societal change, SSCs aim to influence is the cultural shift. Sustainability in conventional settings is often the responsibility of a specific unit or office. In SSCs, sustainability is institutionalised as a cross-cutting principle embedded in teaching and research agendas, operational protocols, and student life (Batal et al., 2024; Shao and Min, 2024; García-Monge et al., 2023). It is a holistic approach that encourages taking shared responsibility and enables all stakeholders to play a role either in bringing about sustainability results, or it may be a change in changing behaviour, innovations, or advocacy of policy outcomes (Zhou and Zheng, 2024; Ramírez et al., 2023; Mohammed et al., 2022). The transition towards SSCs is an integrated reorganisation of the university as a knowledge organisation and a sustainability player (Doaa and Davies, 2025; Nkem et al., 2019). It puts HEIs to the test by requiring them to align their operational logic with global sustainability demands, the trend toward digital technologies, and evolving stakeholder expectations.

The implementation of Smart Sustainable Campus (SSC) initiatives is grounded in multidimensional theoretical thinking that goes beyond describing only the structural and operational aspects of campus transformation, to the socio-cultural and institutional contexts upon which they are grounded (Ajiboye et al., 2022). The interrelated theories of Triple Bottom Line (TBL), Socio-Technical Systems (STS) Theory, and Diffusion of Innovations (DoI) Theory provide guiding insight into the planning, implementation and assessment of SSCs (Xie et al., 2023).

The foundational framework of the Triple Bottom Line (TBL) forwarded by Elkington (1997) enables a broader sustainability assessment than economic assessment. It suggests that any system that can be sustained must achieve a balance among three pillars: environmental integrity, social equity, and economic viability (Dawodu et al., 2022). Lim et al. (2022) asserted that when applied to SSCs, the TBL lens enables HEIs to assess whether campus operations (e.g., energy systems, water use, infrastructure, mobility, and waste management) not only reduce ecological impact but also enhance social inclusion (e.g., accessibility, participation) and institutional efficiency (e.g., cost savings, resource optimisation). For instance, green buildings can save emissions (environmental), improve the indoor environment with regard to health (social), and save utility costs (economic), hence meeting the TBL mandate.

The Theory of Socio-Technical Systems (STS) is complementary to the TBL, as it focuses on the interface between technological innovation and societal structures (Ahlborg et al., 2019). Sony and Naik (2020) stated that the STS theory is a concept formulated in organisational research, arguing that technology systems are never isolated and are deeply embedded and shaped by institutional cultures, governance structures, and user behaviours. In SSCs, implementing smart grids, IoT sensors, or mobility platforms must be coordinated with the university’s social architecture, how it decides, its stakeholders’ values, and the preparedness of its institution (Akbar et al., 2023; Sangita and Sakharle, 2022). STS theory therefore underscores the need to change technical infrastructures and human systems concurrently for effective SSC transformation.

Diffusion of Innovations (DoI) Theory, first presented by Rogers (2003), provides some useful insights on the process of diffusion of innovations (SSC-related or otherwise) across and among institutions. Perceived advantage, compatibility with existing systems, trialability, observability, and complexity are among the factors this theory focuses on in the adoption context (Duanmu and Chai, 2025). Single-source computing settings in SSC environments change agents, including sustainability champions or IT departments, are often early adopters (pioneers) of technologies, such as digital twins or energy dashboards, that tend to spread to other departments (Liu and Ren, 2020; Liu et al., 2020). Communication channels, peer influence, and institutional culture are also mentioned in the theory as factors that underscore speed or slowness in the adoption of SSCs (Ivars-Baidal et al., 2023).

These frameworks, taken cumulatively, demonstrate the significance of systemic thinking in SSC planning (Santos, 2024; Sima et al., 2022; Françozo et al., 2021). Although TBL guarantees adherence to sustainability outcomes, STS provides an operational interface between technology and organisation, and DoI provides the temporal and cultural pathways for the diffusion of SSC. The theories point out that SSC success cannot be reduced solely to the deployment of appropriate tools, but rather to the creation of the right institutional environments that are flexible, participatory, and future-oriented.

The process of development and introduction of the Smart Sustainable Campuses (SSCs) is more and more determined by policy frameworks and institutional ranking rules of the global community, which demand thorough incorporation of sustainability in the work of higher education establishments (Rieckmann and Bormann, 2020). Such international declarations and indicator-based assessments are not only sources of normative guidance, but they also give universities incentives to measure, benchmark, and enhance their sustainability performance (Doaa and Davies, 2025). The framework most relevant to sustainable development is the United Nations Sustainable Development Goals (SDGs), adopted in 2015, which provide a universal blueprint of 17 goals and 169 targets to be achieved in sustainable development (Lan and Shizhu, 2025). Higher education institutions are increasingly aligning their SSC strategies with key SDGs, including SDG 4 (Quality Education), SDG 7 (Affordable and Clean Energy), SDG 11 (Sustainable Cities and Communities), SDG 12 (Responsible Consumption and Production), and SDG 13 (Climate Action). For instance, the shift of a HEI toward renewable energy sources or the zero-waste movement has a direct, positive impact on several SDG goals, reinforcing their universal relevance (Malagnino et al., 2021).

The Talloires Declaration, the first declaration by HEI leaders promising to commit higher education to sustainability, is another policy tool on which the new policies are based (Mai et al., 2024). More than 500 HEIs signing it require environmental literacy as a component of instruction, operations, and informing communities. This declaration laid the groundwork for SSCs by formalising sustainability as a core institutional mandate, rather than an ancillary activity (Lan and Shizhu, 2025). In parallel, ranking systems such as the UI Green Metric World University Ranking and the Sustainability Tracking, Assessment and Rating System (STARS) have played a critical role in shaping SSC operational indicators (Horan and O’Regan, 2021). Green Metric, for instance, evaluates HEIs across six criteria, which are setting and infrastructure, energy and climate change, waste, water, transportation, and education or research (Boiocchi et al., 2023). These indicators directly mirror the core operational domains examined in this study and provide HEIs with quantitative benchmarks for performance improvement.

National-level initiatives also shape SSC development. In countries like the United Kingdom, the Carbon Trust Standard for Universities and the Environmental Association for Universities and Colleges (EAUC) have institutionalised sustainability reporting and carbon reduction targets (Saha et al., 2020). Similarly, Australia’s TEFMA (Tertiary Education Facilities Management Association) promotes smart campus technologies to improve operational performance (Mahmoud et al., 2024). In emerging contexts, governments have begun to integrate SSC goals into broader national sustainability agendas, though funding, infrastructure, and monitoring gaps remain. Despite these efforts, challenges persist. Numerous HEIs face the dilemma of scattered implementation, as proclamations of sustainability are issued but not carried through in operational changes (Ramos et al., 2015). Others report difficulties in data collection, indicator standardisation, and inter-departmental coordination. However, global structures have driven a turnaround in universities’ ideas and quantification of sustainability (Shu and Tian, 2024). Notably, they promote competition, transparency, and networks of learning. Also, they stimulate institutions not only to report their progress but also to innovate in achieving global common purposes (Lim et al., 2022).

In this regard, the SSCs act not only as an operational model but also as an accountability entity, converting global sustainability mandates into practical campus-based activities (Ayyash and Salah, 2025). The ability of a university to meet or exceed these benchmarks increasingly defines its reputation, funding potential, and global partnerships, thereby underscoring the strategic importance of SSCs in 21st-century higher education (Sangita and Sakharle, 2022).

Smart Sustainable Campuses (SSCs) operate at the convergence of environmental stewardship, the digital transformation, and higher education reform (Gu et al., 2025). Xie et al. (2023) stated that there are globally unique trends across the five operational domains: waste management, setting and infrastructure, energy management, water management, and sustainable mobility. The trends indicate not only technological advances but also institutional responses to regulatory pressures and student activism campaigns, on the one hand, and to competitive sustainability benchmarking of institutions, on the other.

i. Waste Management

Waste management in SSCs has evolved beyond basic recycling to incorporate smart waste tracking systems, behaviourally informed interventions, and zero-waste targets (Panaite et al., 2024). HEIs such as the University of California have been embracing holistic Zero Waste by 2020 policies, which include the deployment of smart bins with IoT sensors, trash analytics solutions and campus-wide education campaigns (Rodríguez-Guerreiro et al., 2024). Recycling programs, reusable packaging systems and composting programs are also becoming typical in food services and residential halls (Okoro et al., 2020; Olukanni et al., 2018). Globally, there is growing emphasis on circular economy models, in which campus waste serves as an input for energy (e.g., biogas) or agriculture (e.g., compost), especially in European and Southeast Asian HEIs.

Despite the expanding body of research on Smart Sustainable Campus (SSC) operations, several critical gaps remain unaddressed, reflecting limitations in scope, methodological diversity, and conceptual coherence.

i. Fragmented Domain Integration

Most studies focus on single operational domains, such as energy or infrastructure, without accounting for interdependencies across domains (Olawumi et al., 2023). This single-focus approach obscures synergies and trade-offs, limiting understanding of holistic SSC effectiveness. Integrated assessments remain scarce, hindering the development of comprehensive SSC evaluation frameworks (Pan et al., 2023).

Guided by the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) framework, this study made use of a Systematic Literature Review (SLR) approach (Agrawal et al., 2024). This method allows for a thorough and replicable synthesis of peer-reviewed studies with the goal of identifying trends, conceptual gaps, and emergent strategies in Smart Sustainable Campus (SSC) operations (Chagnon-Lessard et al., 2021). The rapidly evolving and interdisciplinary nature of SSC research, covering fields including environmental science, education, engineering, and digital technology, makes the SLR design especially well-suited to this study.

To gather exhaustive data, several academic databases, including Scopus, Web of Science, ScienceDirect and Emerald Insight, were employed. These four academic databases were selected for their wide and detailed coverage of multidisciplinary research spanning sustainability, higher education, and technological innovation research. The search technique used a combination of Boolean phrases and words to narrow search results (Karale, 2021). Expression used as keywords were combinations of the words, such as; (“smart sustainable campus” OR “smart campus” OR “sustainable campus”) AND (“energy management” OR “waste management” OR “water management” OR “infrastructure” OR “mobility”) AND (“higher education” OR “university” OR “college”). The search was restricted to English-language peer-reviewed journal articles and conference papers published between 2015 and 2025 to capture contemporary developments while allowing temporal breadth for trend identification.

In order to obtain relevance and quality of information, the following inclusion and exclusion criteria were set up as shown in Table 1.

The study was designed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines to ensure transparency and rigour in the literature selection process. A thorough search was conducted across four key academic databases: Scopus, Web of Science, ScienceDirect, and Emerald Insight. Title/Abstract/Keyword search terms applied in the search strategy included a combination of terms that were relevant to the study. In the first search, 518 articles were retrieved. Relevance and quality were provided by the following filters: Language: English only, Source Type: Peer-reviewed journal articles, Document Type: Full research articles and review papers, Publication Period: 2015–2025. These criteria were applied, and the articles were narrowed down to 450. The second step involved screening the remaining articles relevant to the research topic. Only studies that discussed both smart cities and sustainability, as well as environmental sciences, with respect to the research issue were considered. Any articles that failed to meet such thematic requirements were left out. After this step, 252 papers based on appropriate methodologies and presenting outcomes consistent with the objectives of the research were selected. A further screening step involved applying a timeframe criterion (2015–2025) to ensure the analysis focused on contemporary developments. Out of these 252 articles, 162 qualified on this criterion. 72 articles were excluded for reasons such as insufficient operational focus (34 articles), lack of higher education context (23 articles), and non-English language (15 articles). Content analysis was conducted on the identified articles, from which information was extracted and classified into research themes. In the final stage, 90 articles were deemed most relevant for in-depth analysis and synthesis. These articles presented in Appendix were examined to: identify dominant themes in the literature, provide a descriptive analysis of current trends and highlight existing gaps and propose future research directions. This PRISMA multiple-phased process is illustrated in Figure 1 (PRISMA Flow Diagram), ensuring that the study selected only high-quality, relevant, and recent literature for the systematic review.

To assess the quality of the studies included in the synthesis, a standardised appraisal checklist was used to ensure the findings were reliable. This checklist considered items such as research design, methods of data collection, rigour in analysis, and the relevance of the conclusions to SSC operations.

Using a methodology that provided extensive examination, a few limitations were identified. The limitations of English-language publications may have excluded relevant studies conducted in other languages. Also, the reliance on academic databases may overlook grey literature and practical reports that could offer valuable insights. By adhering to the PRISMA framework and using a combination of rigorous selection and analysis methods, this study will conduct a high-quality synthesis of existing knowledge on sustainable development strategies for SSC operations, offering a solid foundation for future research and policy formulation.

Following the rigorous PRISMA methodology, 90 publications were identified as relevant to the Smart Sustainable Campus (SSC) across waste management, setting and infrastructure, energy management, water management, and sustainable mobility. The studies conducted were largely geographically diverse, with research across North America, Europe, Asia, Africa, and Australia conducted in both developed and developing settings. The study distribution revealed that energy management and establishment of infrastructure played a leading role, followed by water and waste management and sustainable mobility (Rodríguez et al., 2023; Malagnino et al., 2021; Rodrigues and Franco, 2021). The emphasis on energy and infrastructure aligns with worldwide climate goals and the ease with which return on investment (ROI) can be measured in these sectors. Most research used mixed-methods or case study designs, therefore emphasising both quantitative performance measures and qualitative insights from stakeholder involvement (Mohammed et al., 2022; Negri et al., 2021; Ferraris et al., 2020). Some papers employed comparative analysis, examining the efficacy of SSC initiatives across diverse geographic, institutional size, and technical capability (Rehman et al., 2024; Yan et al., 2023; Kim et al., 2021). A significant trend across the literature is the growing use of real-time data collection and analysis, indicating a shift toward evidence-based, sustainable management.

Among trends that emerged in the studies, one can note the connection of ICT and sustainability reporting which is not well-developed yet (Agarwal, 2023), the creation of dashboards allowing tracking the use of various resources at the campus level and the use of gamification as the methods of encouraging students and staff members to embrace sustainable behaviours (Zyoud and Zyoud, 2025). Cross-campus teamwork and data exchange efforts are also gaining popularity, facilitating benchmarking and peer-to-peer learning. There are some institutions that have opened SSC access platforms through which data in energy, water, and mobility systems can be accessed publicly to use in education and research (Žalėnienė and Pereira, 2021). In a more specific sense, Clement et al. (2023) stated that the use of ICT in SSCs is evolving beyond simple monitoring to integrative platforms that incorporate a wide range of sustainability indicators. The developed platforms enable real-time feedback on energy and water consumption, waste production, and mobility patterns. Advanced data visualisation formulas, like dashboards and infographics, give both students, faculty, and administrators actionable steps based on data analysis that can better inform policy placements and behavioural change (Sharifi et al., 2024). Such openness allows establishing accountability and participation, which are two key principles of effective governance of campus sustainability.

Verdejo et al. (2022) highlighted that gamification, the use of game design elements in non-game environments, has proven to be a powerful influencer of behaviour change. HEIs have begun introducing applications and platforms that allow people to earn rewards for participating in environmental tasks, such as reducing electrical consumption, using reusable water bottles, or commuting to campus by bicycle (Kaiser and Deb, 2025). Such programs create an atmosphere of competitiveness and neighbourhood interest and lead to greater material sustainability for campus stakeholders. Companies have shown greater compliance and enthusiasm for participating in environmental activities when gamification is used (Tan and Taeihagh, 2020). In addition to internal innovations, sustainability frameworks are also being explored on campuses (Ribeiro et al., 2021). Participation in peer benchmarking programs, including those organised within networks such as the International Sustainable Campus Network (ISCN) and the Association for the Advancement of Sustainability in Higher Education (AASHE), enables institutions to benefit from sharing others’ experiences (Reimers, 2024). These partnerships lead to the improved design of policies, the spread of innovations, and the existence of repositories of best practices that are shared.

From a social innovation perspective, SSCs are developing novel ways of interaction between the campus communities and the larger cities (Da Costa, 2025). Smart transportation systems that connect university shuttles to city transit systems, community composting networks, and water-testing projects implemented by community members are examples of how SSCs are redefining the boundaries between campus and community (Shao and Min, 2024). Such hybrid models advocate inclusive innovation and strengthen the civic mission in higher education.

The analysis revealed an imbalance in the implementation of SSCs between developed and developing regions. The presence of more comprehensive and technology-intensive strategies of SSC is usually enabled by access to superior digital infrastructure, greater institutional capacity, and diverse funding sources that institutions in developed economies typically enjoy (Bashir et al., 2023). The national and regional policies to support these universities typically emphasise environmental sustainability and digital invention, thereby creating an empowering setting for the creation of smart campuses (Verdejo et al., 2022). Conversely, HEIs in the developing nations exhibit substantial systemic limitations that hinder the application of SSC (Ribeiro et al., 2020). These are financial limitations, political will, and deficient or outdated technical infrastructure. These challenges are worsened by the lack of long-term sustainability planning and the fragmentation of institutions (Serafini et al., 2022). Furthermore, the digital divide is a major obstacle, as most institutions are still not equipped with the most basic ICT infrastructure to collect, analyse, and automate data in real time.

According to Papantoniou et al. (2020), the adoption of SSC is also affected by cultural, institutional and governance issues. In a number of contexts, sustainability remains a marginal issue, in second place to the institution’s conventional academic and administrative missions (Herth et al., 2024). For SSC strategies not to be fragmented or superficial, they strongly require leadership commitment and organisational alignment. Long-term sustainability projects may be disrupted by political instability and the incessant turnover of institutional leadership, creating a climate of uncertainty that discourages investment and innovation (Abo-Khalil, 2024). Silva-da-Nóbrega et al. (2022) opined that, in spite of these difficulties, the Global South is not devoid of innovation. Quite the opposite is happening: numerous HEIs are experimenting with low-cost, high-impact, localised solutions. For instance, the implementation of solar-powered drinking water purification systems, decentralised composting units, and offline data logging devices demonstrates that sustainability is possible even under strict constraints. These community-based innovations are often the result of student-driven initiatives or partnerships with local communities and non-governmental organisations, demonstrating the potential of inclusive and context-specific approaches (Tan and Taeihagh, 2020).

The disparities in SSC implementation across regions reflect broader socio-economic and governance inequalities (Shao and Min, 2024). While the developed world can afford to undertake sophisticated, data-driven sustainability initiatives, the developing world faces a range of structural and situational challenges. However, these challenges are also opportunities to innovate in a frugal way, involve the community, and adopt a customised approach that can be applied in the global practice of SSCs (Abad-Segura et al., 2020). The new global SSC environment will be more competitive and balanced, driven by greater investment, knowledge sharing, policy change, and inclusive innovation processes that empower institutions across all regions.

The operational domains (waste, setting and infrastructure, energy, water, and mobility) demonstrate varying levels of maturity and innovation in SSC literature (Françozo et al., 2021). Energy management emerges as the most technologically advanced, benefiting from long-standing investments in smart grids and renewable energy (Zhou and Zheng, 2024). Here, real-time data integration and AI-driven optimisation are transforming demand forecasting, load balancing, and emissions tracking. Such innovation not only improves efficiency but also enhances institutional visibility in sustainability rankings (Ayyash and Salah, 2025). Setting and infrastructure, closely aligned with the physical transformation of campuses, reflect growing interest in green certifications and digital simulation tools (Santos, 2024). However, challenges persist in retrofitting legacy infrastructure, especially in public universities constrained by tight budgets and bureaucratic procurement systems. The use of digital twins and Building Information Modelling (BIM) points to a shift from reactive facility management to predictive, data-informed spatial governance (Kolokotsa et al., 2016). Water and waste management display moderate innovation, with significant progress in regions experiencing water stress or regulatory pressure (Wang et al., 2023). Smart meters, leak detection systems, and greywater recycling show promise but require coordinated maintenance, behavioural compliance, and infrastructure investment. In the case of waste, engagement campaigns and incentive structures significantly influence success, yet there remains a lack of standardised monitoring frameworks for waste diversion metrics across institutions (Shboul et al., 2023). Sustainable mobility is comparatively underdeveloped, often limited to pilot initiatives or infrastructure support for cycling and EVs. Its progress is often hindered by institutional sprawl, student commuter patterns, and the absence of campus-wide low-carbon transport policies.

A key insight from this review is that isolated innovations are insufficient for achieving campus sustainability at scale. Institutions that demonstrated success across multiple domains did so by embedding sustainability into broader strategic plans, linking operational goals with institutional governance, funding structures, and performance evaluation metrics (Stamopoulos et al., 2024; Abad-Segura et al., 2020). Successful SSCs treat campus operations not as a siloed administrative function, but as a living laboratory that intersects with teaching, research, and community engagement (Sima et al., 2022). This aligns with the four strategic pillars of university sustainability identified in the literature: education, research, community partnerships, and operations. Integration also requires interdepartmental cooperation (Ribeiro et al., 2018). For instance, energy monitoring may involve facilities management, IT services, academic researchers, and sustainability officers. Without formalised coordination mechanisms, sustainability risks being compartmentalised or reduced to symbolic gestures.

The operationalisation of SSC strategies offers tangible pathways for HEIs to contribute to global sustainability frameworks. The review finds the strongest alignment with:

SDG 7 (Affordable and Clean Energy) through smart grids and renewable systems;

However, explicit mapping between SSC practices and SDG targets remains rare. Institutions often adopt sustainability branding without comprehensive impact assessments or integration into national climate and education policies (Sugandha et al., 2025). Moreover, the absence of global reporting standards for SSCs hinders benchmarking and knowledge exchange across institutions. International declarations such as the Talloires Declaration, Kyoto Declaration, and the UI Green Metric Rankings provide valuable frameworks but require further integration into SSC operational planning (Lan and Shizhu, 2025; Boiocchi et al., 2023; Rieckmann and Bormann, 2020). Only a minority of reviewed institutions link their campus strategies to these commitments in measurable ways.

This discussion demonstrates strong SSCs alignment with SDGs 7, 11, 12, and 13. Nevertheless, the inclusion of SDG 3 (Good Health and Well-Being) and SDG 4 (Quality Education) provides a more accurate representation of how SSCs can be viewed within the framework of global sustainability. Inclusive education and sustainability literacy (SDG 4) are encouraged in sustainable learning environments, whereas the comfort, health, and productivity of occupants are ensured by a focus on indoor environmental quality (SDG 3). The campus is reinforced as a microcosm of sustainable urban systems through such integrative alignment, in which physical, digital, and social infrastructures converge to facilitate the full SDG agenda.

The review identified several recurring barriers:

Financial limitations, especially in public and developing institutions, restrict smart infrastructure investments.

Moreover, ethical issues arise in the increasing use of surveillance-based technologies, requiring stronger governance, transparency, and user consent mechanisms.

Despite challenges, SSCs present powerful opportunities for HEIs to reinvent themselves as agents of sustainable development. This includes:

Co-creation with students and faculty in designing, testing, and evaluating SSC solutions.

Institutions that strategically embrace these opportunities are likely to experience reputational gains, attract sustainability-conscious students, and influence policy innovation at national and international levels.

This systematic literature review has critically examined global trends, frameworks, challenges, and opportunities associated with the operationalisation of Smart Sustainable Campuses (SSCs). By focusing on five core operational domains: energy management, setting and infrastructure, water management, waste management, and sustainable mobility, the review highlights the evolving landscape of sustainability in higher education institutions (HEIs). The findings emphasise a major shift from conventional campus operations toward sustainability-oriented, integrated, technology-enabled models. Smart technologies and predictive analysis help the energy and infrastructure sectors to become the most mature areas of innovation. Other fields need more strategic funding and institutional coordination, though, notably sustainable mobility and waste. Moreover, the review exposes discrepancies in digital infrastructure, financial capacity, and policy alignment among HEIs in developed and developing countries, thereby exposing structural imbalances. While international declarations and ranking systems (e.g., the SDGs, the Talloires Declaration, and the UI GreenMetric) provide valuable frameworks, their translation into actionable campus strategies remains inconsistent.

The literature also showed an increasing focus on cross-cutting approaches fusing operations, education, research, and community involvement. Institutions that present SSCs as means for experiential learning and creativity, rather than as mere operational upgrades, are better suited to holistically promote sustainability goals. Still, obstacles persist, from ethical data utilisation and stakeholder opposition to financing limits and fragmented policy settings. These difficulties highlight the need for strong governance systems, context-sensitive planning, and interdisciplinary leadership to guide SSC transitions.

Based on the evidence synthesised in this review, several key recommendations are proposed to strengthen SSC implementation:

i. Develop Integrated Sustainability Strategies

HEIs should move beyond isolated interventions by adopting campus-wide sustainability frameworks that align institutional missions with operational performance metrics, SDG targets, and international sustainability declarations.