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Solar Panel Costs Plummet 99% Since 1970s as Cross-Industry Innovations Drive RE Revolution

New MIT research reveals how 81 key technological advances from diverse sectors enabled dramatic cost reductions in photovoltaic systems

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Image credit: Sebastian Ganso from Pixabay

The cost of solar panels has dropped by more than 99 percent since the 1970s, enabling widespread adoption of photovoltaic systems that convert sunlight into electricity, according to an interesting new research from the Massachusetts Institute of Technology (MIT).

A comprehensive MIT study has identified the specific innovations behind this dramatic transformation, revealing that technical advances across a web of diverse research efforts and industries played a pivotal role in making solar energy economically viable worldwide.

Cross-industry innovation network

The research, published in PLOS ONE, demonstrates that key innovations often originated outside the solar sector entirely, including advances in semiconductor fabrication, metallurgy, glass manufacturing, oil and gas drilling, construction processes, and even legal domains.

“Our results show just how intricate the process of cost improvement is, and how much scientific and engineering advances, often at a very basic level, are at the heart of these cost reductions,” study senior author Jessika Trancik said in a media statement. “A lot of knowledge was drawn from different domains and industries, and this network of knowledge is what makes these technologies improve.”

Trancik, a professor in MIT’s Institute for Data, Systems, and Society, led the research team that identified 81 unique innovations affecting photovoltaic system costs since 1970, ranging from improvements in antireflective coated glass to the implementation of fully online permitting interfaces.

Strategic Implications for Industry

The findings could prove instrumental for renewable energy companies making R&D investment decisions and help policymakers identify priority areas to accelerate manufacturing and deployment growth.

The research team included co-lead authors Goksin Kavlak, now a senior energy associate at the Brattle Group, and Magdalena Klemun, currently an assistant professor at Johns Hopkins University, along with former MIT postdoc Ajinkya Kamat and researchers Brittany Smith and Robert Margolis from the National Renewable Energy Laboratory.

Key findings

Building on mathematical models previously developed to analyze engineering technologies’ effects on photovoltaic costs, researchers combined quantitative cost modelling with detailed qualitative analysis of innovations affecting materials, manufacturing, and deployment processes.

“Our quantitative cost model guided the qualitative analysis, allowing us to look closely at innovations in areas that are hard to measure due to a lack of quantitative data,” Kavlak said in a media statement.

The team conducted structured literature scans for innovations likely to affect key cost drivers such as solar cells per module, wiring efficiency, and silicon wafer area. They then grouped innovations to identify patterns and tracked industry origins and timing for each advance.

Module vs. Balance-of-system innovations

The researchers distinguished between photovoltaic module costs and balance-of-system (BOS) costs, which cover mounting systems, inverters, and wiring. While PV modules are mass-produced and exportable, many BOS components are designed and built locally.

“By examining innovations both at the BOS level and within the modules, we identify the different types of innovations that have emerged in these two parts of PV technology,” Kavlak added.

The analysis revealed that BOS costs depend more heavily on “soft technologies”—nonphysical elements such as permitting procedures—which have contributed significantly less to cost improvements compared to hardware innovations.

“Often, it comes down to delays. Time is money, and if you have delays on construction sites and unpredictable processes, that affects these balance-of-system costs,” Trancik said.

Industry cross-pollination

The research found that innovations from semiconductor, electronics, metallurgy, and petroleum industries played major roles in reducing both PV and BOS costs. BOS costs were additionally impacted by advances in software engineering and electric utilities.

Notably, while most PV panel innovations originated in research organizations or industry, many BOS innovations were developed by city governments, U.S. states, or professional associations.

“I knew there was a lot going on with this technology, but the diversity of all these fields and how closely linked they are, and the fact that we can clearly see that network through this analysis, was interesting,” Trancik said in a media statement.

“PV was very well-positioned to absorb innovations from other industries—thanks to the right timing, physical compatibility, and supportive policies to adapt innovations for PV applications,” Klemun added.

Quantifying impact

To demonstrate their methodology’s practical applications, researchers estimated specific innovations’ quantitative impact. For example, wire sawing technology introduced in the 1980s led to an overall PV system cost decrease of $5 per watt by reducing silicon losses and increasing manufacturing throughput.

Future applications and computing power

The analysis highlighted the potential role of enhanced computing power in reducing BOS costs through automated engineering review systems and remote site assessment software.

“In terms of knowledge spillovers, what we’ve seen so far in PV may really just be the beginning,” Klemun said, pointing to robotics and AI-driven digital tools’ expanding role in driving future cost reductions and quality improvements.

The research team plans to apply this methodology to other renewable energy systems and further study soft technology to identify processes that could accelerate cost reductions.

“Through this retrospective analysis, you learn something valuable for future strategy because you can see what worked and what didn’t work, and the models can also be applied prospectively. It is also useful to know what adjacent sectors may help support improvement in a particular technology,” Trancik said. “Although the process of technological innovation may seem like a black box, we’ve shown that you can study it just like any other phenomena.”

The research provides crucial insights for understanding how complex technological systems evolve and offers a roadmap for accelerating innovation in renewable energy and other critical technologies through strategic cross-industry collaboration.

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Earth

Vantara: Inside a Billionaire-Backed Bid to Build a Global Wildlife University

The launch comes at a time when conservation challenges are becoming increasingly complex.

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Anant Ambani at the foundation ceremony of Vantara University in Jamnagar, India, April 2026. Image credit: Vantara.

A new private university focused on wildlife conservation and veterinary sciences is being positioned as an ambitious attempt to reshape how the world trains the next generation of conservation professionals—backed by one of Asia’s most influential business families.

The institution, Vantara University, has been launched in western India by a wildlife initiative founded by Anant Ambani, part of the Reliance group. Framed as an integrated academic ecosystem, the project reflects a growing trend where private capital is stepping into areas traditionally led by public institutions and global nonprofits.

Vantara officially describes the university as the “world’s first integrated global university” dedicated to wildlife conservation and veterinary sciences. While the scale and integration may be distinctive, similar disciplines are already taught across universities worldwide, often through specialised schools, research centres, and veterinary colleges.

The claim, therefore, rests less on the existence of such education and more on the attempt to consolidate it within a single, purpose-built institutional framework.

A Shift Toward Education-Led Conservation

The launch comes at a time when conservation challenges are becoming increasingly complex. Climate change, habitat fragmentation, and the spread of zoonotic diseases are reshaping ecosystems and exposing the limits of traditional conservation models.

There is a growing recognition that protecting biodiversity will require not just field interventions, but a systemic expansion of expertise—from wildlife veterinarians and epidemiologists to policy specialists and conservation planners.

Vantara University aims to respond to this gap by bringing together disciplines such as wildlife medicine, genetics, behavioural sciences, epidemiology, and conservation policy under one academic structure.

Blending Science, Scale, and Philosophy

The university’s vision combines scientific training with a philosophical framing rooted in compassion and stewardship. Its design draws inspiration from historical centres of learning, while positioning itself as a modern, purpose-led institution.

“The future of conservation will depend on how we prepare minds and institutions to serve life with compassion, knowledge, and skill,” Anant Ambani said in a statement.

“Vantara University is shaped by a deeply personal journey of witnessing animals in distress and recognising the need for greater capability in their care… the university seeks to nurture a new generation committed to protecting every life.”

Global Ambitions, Local Foundations

Although based in India, the project is clearly aimed at a global audience.

The university plans to offer undergraduate, postgraduate, and specialised programmes, supported by research infrastructure and international collaborations. It also emphasises action-oriented learning, linking academic work with real-world conservation practices.

This approach reflects a broader shift in higher education, where institutions are increasingly expected to produce not just knowledge, but deployable expertise.

The Rise of Private Influence in Conservation

The initiative also highlights a larger structural shift: the growing role of private capital in shaping conservation agendas.

Historically, conservation has been driven by governments, multilateral agencies, and non-profit organisations. However, large-scale funding gaps and the urgency of environmental crises are opening the door for philanthropic and corporate actors to play a more prominent role.

This raises both opportunities and questions.

Private initiatives can accelerate innovation and investment, but they also bring concerns around governance, accountability, and long-term alignment with public interest.

Questions of Access and Impact

As with many specialised institutions, accessibility will be a critical test.

While the university has announced scholarships aimed at supporting students from diverse backgrounds, the broader question remains: can such models scale inclusively, particularly for communities most directly affected by environmental change?

The effectiveness of the initiative will also depend on its ability to influence policy, contribute to global research, and produce professionals equipped to address complex ecological challenges.

A Changing Conservation Landscape

The launch of Vantara University signals a deeper transition in how conservation is being imagined.

Increasingly, the field is moving beyond isolated interventions toward integrated systems that connect science, education, and practice. In this context, universities are not just centres of learning—they are becoming critical infrastructure in the fight to preserve biodiversity.

Whether this particular model succeeds will depend on execution, collaboration, and its ability to move beyond vision into measurable impact.

But its emergence underscores a central reality:

The future of conservation may depend as much on classrooms and laboratories as it does on forests and protected areas.

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Health

Lancet Commission Launched to Tackle Health and Justice Impacts of Rising Sea Levels

A new Lancet Commission will examine how rising sea levels impact health, equity, and global systems, with experts calling it an urgent crisis.

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Lancet Commission Launched to Tackle Health and Justice Impacts of Rising Sea Levels
Image credit: Andres Ayala s/Unsplash

A new global commission led by The Lancet has been launched to examine the growing health and justice impacts of sea-level rise, as climate change accelerates risks for millions living in coastal and low-lying regions.

The Lancet Commission on Sea-Level Rise, Health and Justice, announced on April 8, brings together 26 international experts to assess how rising seas are reshaping public health, livelihoods, and global equity.

A Growing Crisis Beyond Climate

Sea-level rise, driven by anthropogenic climate change, is already contributing to displacement, food and water insecurity, and changing patterns of infectious diseases. The Commission marks the first major effort to analyse these intersecting risks through a health-focused lens.

“This commission comes at exactly the right time… sea-level rise is no longer a distant threat. It is already disrupting lives, health and wellbeing, especially for the most vulnerable,” said Christiana Figueres, Co-Chair of the Commission and a former UN climate chief.

Experts warn that the impacts extend far beyond environmental damage, affecting the social and economic fabric of vulnerable communities.

“Rising seas don’t just threaten coastlines, they threaten lives, livelihoods, and basic fairness. This is not only a climate problem. It is a health crisis, a justice crisis, and an urgent call for collective action,” said Jemilah Mahmood, Commissioner, Lancet Commission, and Executive Director of the Sunway Centre for Planetary Health, Malaysia.

An Urgent Global Health Challenge

The Commission is supported by the WHO Asia-Pacific Centre for Environment and Health and aims to generate evidence-based policy recommendations to strengthen adaptation, resilience, and equitable responses.

Dr Sandro Demaio, Director of WHO ACE, emphasised the immediacy of the crisis.

“Sea-level rise is no longer a distant threat — it is a public health emergency unfolding now. Through this WHO supported global Commission, we are clear: inaction is not neutral, it is a choice that puts lives and justice at risk.”

Human Impacts at the Core

The Commission also highlights the disproportionate burden on vulnerable populations, particularly in coastal and low-income regions.

“Rising sea levels are more than an environmental issue; they quietly contaminate water, displace communities, and increase health risks for those least able to cope. Every centimetre of sea level rise is not just a measure of water, but a measure of injustice,” said Kathryn Bowen, Co-Chair of the Commission.

A Defining Policy Moment

With projections suggesting that hundreds of millions of people could be displaced by the end of the century, the Commission aims to inform global policy and strengthen international cooperation.

“Sea-level rise is not just an environmental issue — it is a test of our commitment to people, equity, and future generations,” said Jiho Cha, Member of Parliament, Republic of Korea and Co-Chair of the Commission.

The Commission will contribute to global policy discussions, including international climate platforms, and aims to place human and planetary health at the centre of climate action.

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Society

Why Campuses Need a Happiness Officer Now

Rising student stress and depression highlight the need for a happiness officer on campus to promote wellbeing and prevent mental health crises.

Dr Rajesh K Pillania, Professor, MDI, Gurgaon

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Student Stress Is Rising. Campuses Need a Happiness Officer
Image credit: Adedire Abiodun/Pexels

As student stress and mental health challenges rise, educational institutions must move beyond symbolic gestures and invest in structured wellbeing systems—starting with a dedicated happiness officer on campus.

The rising need for happiness

20 March was celebrated as the International Day of Happiness.

The idea of creating an International Day of Happiness is a great one; it deserves to be taken seriously. However, there is a need to do much more than celebrate happiness for just one day a year. This becomes crucial when one considers the rising problem of stress, depression and suicides among young people around the world, including in India.

The challenges of stress, depression and suicides among students

The education system places significant pressure on students, yet they are rarely taught how they, their parents, teachers or the system itself can help them cope with this pressure—or how to view their efforts in the right perspective.

Because of a lack of awareness, education and capability, stress has become a major issue in students’ lives, often leading to depression and, in some cases, suicides. These challenges have far-reaching negative impacts across different aspects of life, as supported by multiple research studies.

A happiness officer on campus

Since happiness is an essential ingredient for a fulfilling life—and also acts as a preventive factor in dealing with stress—it is important to give it greater importance in educational institutions.

Institutions already place heavy demands on faculty and staff, who may not have the time to actively focus on student wellbeing. In this context, employing a dedicated happiness officer to address health and wellbeing on campus could be a significant step forward.

India’s Campuses Need a Happiness Officer to Tackle Student Stress
Image credit: RDNE Stock Project/Pexels

The happiness officer’s primary responsibility should be to raise awareness about happiness, as well as the dangers of stress and depression, among students, faculty, staff and others on campus. This awareness must be continuous rather than occasional.

The second responsibility should be to organise regular programmes in engaging ways, covering themes such as what happiness is, why it matters, and how it can be cultivated, alongside practical approaches to understanding, avoiding and managing stress.

who is a happiness officer
Illustration/ Credit: S James/EdPublica

The third responsibility should be to track individuals who may be experiencing stress or depression and ensure they receive timely support. Additional responsibilities can be developed depending on the needs and context of each institution.

Avoiding the trap of tokenism

However, awareness initiatives and programmes must be implemented with sincerity and intent. The happiness officer must work in both letter and spirit to create meaningful impact, rather than simply fulfilling formal requirements.

This role should not fall into the common institutional trap where ticking boxes becomes more important than creating real change on the ground.

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