Energy Harvesting Forum

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EnerHarv 2022 Presentations Are Now Fully Open to Public at No Cost

PSMA makes the free, downloadable materials from the Second International Energy Harvesting Workshop – formerly offered only to conference attendees – available for all on the EnerHarv 2022 website

EnerHarv LogoMendham, NJ— June 15, 2023  The Power Sources Manufacturers Association (PSMA), organizer of the International Workshop on Energy Harvesting and Micro-Power Management, announces that the full catalog of the EnerHarv 2022 conference proceedings is now available to the public. Previously accessible to conference attendees exclusively, the proceedings can now be downloaded, free of charge and without need to register, from the EnerHarv 2022 Data Repository.

The extensive library of proceedings includes all keynote addresses, technical presentations, functional demonstrations and poster sessions conducted over the three-day event. Held on the Centennial Campus of NC State University, Raleigh, North Carolina, EnerHarv 2022 was organized by PSMA and hosted by the Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST) at NCSU.

Included in the EnerHarv 2022 data repository are materials from:

  • Three daily keynote addresses
  • Technical session tracks covering:
    • Transducers
    • Systems Integration
    • Storage
    • Power Management
  • Slide presentations of 12 functional demos
  • Posters from 10 presenters

“EnerHarv 2022 achieved its objective of creating a focal point for a community of experts and users of energy harvesting and related technologies to share knowledge, best practices, roadmaps, experiences and to create opportunities for collaboration primarily in the wireless IoT edge device sector,” said Brian Zahnstecher, PSMA Energy Harvesting Committee and EnerHarv Co-Chair. “And now, thanks to PSMA, the fruits of this very successful conference are being made available, without cost, to the broadest possible audience.”

Mike Hayes, EnerHarv 2022 & PSMA Energy Harvesting Committee Technical Co-Chair, added, “We are very pleased to see our ecosystem of stakeholders expand further – and we’re all eager to share our expertise and collaboration based on real-life IoT applications.”


EnerHarv2022: The Second International Energy Harvesting Workshop

April 5-7, 2022
ASSIST Center, North Carolina State University

"Building the Ecosystem for Powering the Internet of Things"


EnerHarv attendees

After a two-year, COVID-related deferral EnerHarv 2022 finally went ahead at the ASSIST Center in NCSU (North Carolina State University) USA from April 5-7, 2022. The event was organized by PSMA with EnABLESASSISTIEEE PELS & CPSS as Technical Sponsors. This is becoming the 'must attend' biennial event for the 'power IoT' community including researchers, industry, developers, integrators and end users. Each day the Workshop offered a mix of technical sessions, demos, posters, panel sessions and of course lots of networking. Despite the uncertainties related to COVID-19, the Workshop attracted good attendance with more than 55 people.

EnerHarv 2022 opened each day with keynotes.

Patrick Mercier

  • On Day 1, Patrick Mercier, University of California San Diego, gave an insight into the emergence of 'unawareables,' the development and integration of miniaturized energy harvesting, wireless power transfer and related components and the advantages of integration at semiconductor and module levels. Coupled with various novel circuits, architectures and methods of moving and stacking inductors and capacitors, various innovative methods for integration/partitioning of components, circuits and systems were illustrated to minimize size, maximize wearability and Veena Misrausability.  The door is wide open to developers of better passives to migrate and integrate their technologies.
  • On Day 2, Veena Misra, ASSIST Center, provided an overview of the activities of the ASSIST Center at NCSU, most notably the development of technologies and demonstrators for wearables. System integration and human interaction considerations are critical. For example, overcoming user forgetfulness can be lifesaving; flexibility and compatibility with working environments are essential. There are a multitude of fluids, enzymes, etc. that can be used for harvesting, storage or sensing. ASSIST has a rapid prototyping group to help create testbeds to drive technologies to higher TRLs (technology readiness levels).
  • On Day 3, Baoxing Chen, Analog Devices, described how IoT is riding the third wave of the IT Revolution and gave a 'powering the IoT perspective' in terms of challenges and opportunities, especially Baoxing Chenbridging the gap between harvester capabilities and load demand. This included some examples of ADI roadmap activities incorporating disruptive technologies particularly in the wearables and Industry 4.0 sectors for sensors, power management and wireless comms. For example, micro-TEG devices at chip scale will be able to give microWatt performance even at very small temperature gradients. Low-leakage, high-cycle supercaps are also in development. Additionally, ADI is looking at sustainability aspects – how to make parts reliable in terms of performance and lifetime.

In the Transducer Session we learned from speakers from Tyndall National Institute, Research Institutes of Sweden (RISE) & Université de Sherbrooke the 'wideband' challenge for vibrational devices and various innovations at MEMS and mezo level with various ways of fabricating parts, integrating magnetics, piezo materials, etc. to address this. Noncritical low data rate condition monitoring of machinery (Industry 4.0, automotive, wind turbines, etc.) popped up in several sessions as an ideal application area for vibrational harvesters.

The System Integration Sessions on Days 1 and 2 gave great insight from both industry and academia into opportunities and challenges.  A very nice methodology to assess storage technologies and their trade-offs, e.g. the use of spider charts was presented by CEA-Leti that could be also adapted for other technologies. A key common need is for easy tuning and multimodal capability for vibrational devices along with other challenges highlighted by the University of Limerick. For wireless power transfer (WPT), neuro-stimulation and telemetry for implantables are two promising areas. Pros and cons of ultrasonic over RF (size, delivery range, power density) were outlined by NCSU. FDA limits must be understood, and appropriate wireless comms protocols selected. Several examples of demonstrators were presented based on LoRaWAN & BLE platforms. Mid Sweden University (MIUN) gave a nice example of the suitability of vibrational harvesting technology for conditional monitoring of rotating machinery with improved sample rate possibilities at higher rotational speeds. In discussion forums, RISE highlighted the need to connect transducers (particularly vibrational) in a manner to give consistent performance. This is key for successful TRL progression and system integration, and we need more industrial and mechanical design people in our ecosystem, particularly at the module level. Several innovative WPT techniques were outlined by the University of Florida. For wearables and implantables we need to watch for biocompatibility, MRI compatibility, wear, stress, corrosion & user safety.

EnerHarv 2022


The Energy Storage Session comprised speakers from NAWA Technologies, Penn State University and NCSU. Energy storage was also prominently covered in the System Integration Sessions. A common theme was the use of nanotechnology at various scales from WSN-edge-device micro-batteries to higher-powered ultracaps for data centers and EVs. For example, NAWA uses vertically aligned nanotubes in their ultracaps, which when combined with conventional storage devices can mitigate voltage drops to give longer battery life. Features and trade-offs of different battery chemistries were outlined.

EnerHarv 2022The Power Management Session comprised speakers from ST Microelectronics, Tyndall and ADI (formerly Maxim). Once again innovative power circuits and architectures were on display to assist with impedance matching (to maximize power transfer), cold start, voltage conditioning and digital interfacing to contextually minimize device power consumption. For example, the MISCHIEF circuit from Tyndall offers a modular circuit block approach offering low-risk, fast-time-to-market development and can harvest ambient energies currently unusable in the sub-10 mW area, particularly at low voltages. Several circuits are in development for WPT applications.

Two Panel Sessions were held:

EnerHarv Panel

  • The "Powering the Next-generation WSN Experience" Session on Day 1 had presenters representing a variety of backgrounds representing industry and academia (Wurth, STMicro, Tyndall, Sherbrooke).  They had a fruitful discussion on the challenges, gaps, and opportunities associated with bringing the ubiquitous sensor and IoT/IIoT deployments of the near term to mainstream applications.  Those closer to the field in industry highlighted the challenges associated with measuring very-low currents and matching the tech not to the "killer app" but rather to the "killer customer" to help catapult visibility.  Those closer to the academic side highlighted the sustainability opportunities, the shifting landscapes of business models (i.e. – "data is the new oil") and need to collaborate with other communities and ecosystems (also a fantastic segue into the Day 2 panel).
  • The Power IoT Ecosystem Session on Day 2 had representatives from various groups (ASSIST, CONNECT, EnABLES) all contributing to creating synergies and fostering collaborations between stakeholders in difference ways. The 'ecosystem of stakeholder' image from the EnABLES position paper ( (highly influenced by the PSMA Energy Harvesting Committee (EHC)) was prominently used throughout the event to encourage and inspire people to participate and also to identify opportunities to add more to our ever-growing community of experts and users. For example, mechanical designers, software engineers and developers of business models were seen as areas where the outputs can find a stronger route to adoption and commercialization. All panelists saw major value in cross-connecting activities to realize synergies, e.g. hosting related events in an adjacent way (time and place) and cross-promoting, e.g. sharing of simulation tools, databases.

In the Demo Session we saw quite a variety of functional demonstrations of energy-harvesting (and related) technologies. As something the PSMA EHC has felt very strongly from putting together numerous events over the years, these lectures and discussions are far more fruitful and impactful when complemented by REAL demos people can touch and see work before their eyes.  Such demos covered the use of transducers, energy storage, PMICs (along with the development environments to immediately utilize), and sensor telemetry data from various WSN implementations.  Supporting aspects of the ecosystem, such as battery characterization, were demonstrated along with some real-world (shipping and proof-of-concept) products and applications.

EnerHarv Demos

Ten Posters were on display from academic institutes, research centers and industry partners in Europe and US, primarily based on transducers, PMICs and energy storage solutions. Each poster presenter was given an opportunity to do an elevator pitch and it proved to be a great mechanism to stimulate dialogue and discussions between attendees on future potential collaborations. ASSIST & CONNECT already have leveraged funding mechanisms in place to stimulate collaborations, particularly wearables and Energy-Source-in-Package (eSIP) based WSN energy harvesting demonstrators. EnABLES is already funding many free of charge feasibility studies and subsequently leading to several project proposals and project starts. At future EnerHarvs, we anticipate successful outcomes from this with stronger links between poster and demo session content as we see our technologies progress in TRL level.

EnerHarv Posters

It was not all business as deep, technical discussions of the day turned into pleasurable, social and networking events in the evening.  The first night was capped by a formal dinner at the Park Alumni Center located right on the NCSU campus.  The team then piled onto a bus the second night for a social event at the Raleigh Beer Garden, which boasts the planet's largest selection of draft beers.  Needless to say, much energy was harvested by all, as the pictures indicate.

EnerHarv ReceptionEnerHarv Social Event

The ASSIST Center (also acting as host) was well-represented by Veena Misra (Director) and EnerHarv General Chair, Mehmet Ozturk, who did a wonderful job with their team (Karen, Candice & Adam) organizing the entire event at their impressive venue in a highly professional and friendly manner. ASSIST provided a keynote, several attendees, presentations and contributed to the panel sessions.

Tech sponsor EnABLES had a strong presence with three posters, four technical presentations and participation in the 'power IoT ecosystem' panel session. EnABLES was cited as a great mechanism to help kick-start initiatives amongst stakeholders and is particularly helpful for SMEs with there being a clear need for such a service. A 'carousel' of 15 of EnABLES TA (Transnational Access) feasibility studies was on display triggering many ideas amongst participants.

Organizer and sponsor PSMA was represented by its Energy Harvesting Committee Co-chairs (& EnerHarv Co-founders) Mike Hayes (Tyndall National Institute) & Brian Zahnstecher (PowerRox) as well as Lisa & Karalyn supporting from the PSMA office. We also leveraged heavily from Technical Co-chair Shad Roundy from University of Utah, both his extensive knowledge and reputation in this area as well as network of contacts.

Finally, some takeaways. These are just a few teasers, and why you need to attend EnerHarv 2024 and beyond to get a deeper insight!

  • Whilst there will be a need for billions/trillions of IoT edge devices there is still no 'killer application' and every application has different needs. This reinforces the need for our technologies to be standardized and interoperable so that it will be easy, cost effective and low risk to mix, match and adapt our tech platforms to create custom solutions.
  • Life cycle costs are not being fully taken into account. We need to educate the entire ecosystem on this – labor cost, downtime implications, environmental impact, sustainability, etc. and bring in stakeholders that can convey this message.
  • Regulations can help change the attitude of the adopter.
  • People will always be greedy and use all the power we give them…and more. We need to illustrate the criticality of minimizing power consumption as a means to extend battery life (in harmony with energy harvesting and better batteries/storage devices).
  • We need more than just software – we need LOGIC (architecture and intelligence to dynamically collect data in the leanest possible way to meet application need)
  • We need to have tools and databases to help better predict battery life and give people assurance of reliable and autonomous operation even in the face of intermittent energy sources.
  • Like any good collection of technology and supply chain resources, we all agree we are most in need of end-users.  Not just people to buy parts, but industry partners that share an equal passion to address the pain points and bring harvesting (and related) technologies to the mainstream to deliver the perpetually self-powered IoT ecosystem.

Proceedings are already available on the EnerHarv website to attendees and will become publicly available within the next 6-8 months. To get a taste for what you missed, the proceedings of the inaugural EnerHarv 2018 are available on the website ( EnerHarv 2024 is likely to return to Europe by which time we hope a future evolution of EnABLES will be in place to continue to build our power IoT community.

We would like to take this opportunity to thank our EnerHarv Workshop Committee (EWC), Organizer and Financial Sponsor PSMA, our Industry Sponsors Analog DevicesUBITO and Wurth Elektronik, Technical Co-sponsors EnABLES, ASSIST, IEEE PELS & CPSS as well as our Media Sponsors Bodo's Power Systems and How2Power.

Many seeds were sown for future collaborations and we look forward to 'harvesting' these at future EnerHarv workshops!

Provided by:
PSMA Energy Harvesting Committee Co-Chairs

Mike Hayes
Mike Hayes
Tyndall National Institute

Brian Zahnstecher
Brian Zahnstecher

5-7 April 2022
ASSIST Center, North Carolina State University

"Building the Ecosystem for Powering the Internet of Things"

The inaugural, EnerHarv2018 International Workshop on Energy Harvesting and Micro-Power Management, created by the PSMA Energy Harvesting committee, was hailed as a major success. Participants (and indeed those who missed it!) have been eagerly and persistently asking "when is the next EnerHarv?" Initial plans were to make it a biennial event, and EnerHarv 2020 was scheduled to be held in Raleigh North Carolina, USA, hosted by North Carolina State University (NCSU), but this was put on ice due to COVID-19. After a long wait we now pleased to announce that EnerHarv2022 will held from 5th to 7th April 2022, retaining the same host and venue. EnerHarv2018 showed the value in bringing a broader range of stakeholders to our ecosystem (e.g. packaging, software, industrial design) and the critical need to bring in more end users across multiple applications including building management, medical technologies, assisted living, environmental, conditional monitoring of equipment, systems, power supplies. This strongly influenced our decision to host the event in the Raleigh/Durham area which is a hotbed of industrial and academic activity and has a collaborative ecosystem already in place via the ASSIST Research Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies that is hosted by NCSU.

The mission remains unchanged from EnerHarv 2018, to create "a focal point for a community of experts and users of energy harvesting & related technologies to share knowledge, best practices, roadmaps, experiences and create opportunities for collaboration." The 2018 workshop demonstrated a need for technology and thought leadership in this sector and the potential benefits of emerging technologies, if properly guided and integrated. It cross connects not just suppliers and developers of power electronics components and systems but also demonstrates the value of collaboration when experts from power electronics, ICT and MEMS co-develop standardized, inter-operable and system optimized solutions for real life applications. To date the ecosystem has already grown substantially, addressing the challenge of powering one trillion sensors that the world will have by 2025 which offers unprecedented growth opportunities for developers and integrators of power electronics parts and systems.

EnerHarv 2022 will mainly (but not exclusively) be dedicated to making portable power sources last longer for ultra-low power IoT edge devices. Ideally, devices can be powered indefinitely by using energy harvesting, where ambient energies are available, but at the very least embedding technologies that will minimize the power consumption and maximize the conversion efficiencies.

Workshop attendees will learn of the many constituents of an existing, energy harvesting/micro-power management product ecosystem and how to apply these products to their application requirements in a system optimized way.  They will also learn valuable information to drive optimal design execution and address common pain points in bringing a variety of products to market will enable a dramatic penetration of energy harvesting solutions into a broader range of applications. Through networking, attending tutorials, viewing real life demonstrations and participating in discussions developers will gain a step function increase in their knowledge and ability to gain access to energy harvesting powered solutions. The workshop will demonstrate examples of successful energy harvesting products already created via synergies between the energy harvesting source and the load demand developers.

EnerHarv2022 will be supported the EU EnABLES project which has already built an international 'power IoT' community comprising over 500 academic and industry stakeholders.

EnerHarv 2022 is an opportunity not to be missed for anyone interested in 'powering the internet of things.' In future newsletters we will provide further details including the organizing and technical committees, sponsors, outline program an initial speaker line up. In the interim please if you would like to learn more or get involved please contact the PSMA Energy Harvesting committee co-chairs Mike Hayes ( or Brian Zahnstecher (

EnerHarv2018 proceedings

EnerHarv 2018 proceedings are available from the EnerHarv website

The The EnerHarv2018 Workshop was an initiative created by the PSMA Energy Harvesting Committee that addressed the opportunities to tap into the forecasted 1 trillion IoT device market projected for 2025 and the need for energy harvesting and micro-power management technology development to 'power the Internet of Things'.

EnerHarv chairs Mike Hayes & Brian Zahstecher thank sponsor PSMA and 
coordinator Áine Murphy Tyndall for their wonderful support 


Over 80 people attended this inaugural event, hosted by Tyndall National Institute in Cork, Ireland, one of Europe's leading industry-led IoT research centers, with over forty percent industry participation from companies in Europe, North America and Asia. According to attendees, the workshop more than lived up to its promise to create 'an ecosystem for experts and users of energy harvesting and related technologies to share knowledge, best practices, roadmaps, experiences and create opportunities for collaboration'. A key message from the workshop is that emerging technologies, if properly guided and integrated by our ecosystem and driven by the end users, will enable a dramatic penetration of energy harvesting and power management solutions into a broad range of applications

The Keynote speakers Yogesh Ramadass from Texas Instruments and Eric Yeatman from Imperial College London set the stage and inspired the audience by sharing their perspectives, some history and their applications led vision for powering the internet of things. This was followed by an outstanding line up of speakers on technology, applications and panel sessions from Analog Devices, Carnegie Mellon, ST Micro, Ilika, ARM, UNIST (Korea), Cambridge Display Technologies, Fraunhofer, IMTEK-University of Freiburg, Tyndall, MCCI, NCSU (North Carolina), Boston Scientific, Cap-XX, University of Southampton & United Technologies. One of the most unique and successful elements of EnerHarv2018 Workshop was the 16 demos from research and industry demonstrating many real life applications (e.g. wearables, asset tracking, condition monitoring, agri-tech) where energy harvesting solutions have already been developed. In addition, 19 posters were on display stimulating discussions, awareness and synergies between delegates. Ample time was allowed to enable the attendees to interact, learn, form partnership and be motivated and inspired to develop impactful solutions. The increase in the level of interaction between attendees was remarkable by the end of the workshop with a clear appetite for more events such as this. A testament to the interest levels and interest from the audience was the number of attendees that remained through to the afternoon sessions on the 3rd day and the level of stimulating audience participation in all sessions.

Yogesh Ramadass (TI) delivers opening keynote 

Presenters Dhiman Mallick (Tyndall), Ausrine Bartasyte (FEMTO-ST) & Jane Cornett (Analog Devices) at the transducer session
Alex Weddell (Univ. of Southampton/ARM) & Gerd vom Bögel (Fraunhofer IMS) in discussions at the live demo session

It’s lunchtime day 3 are we are all still here!
Joe Horzepa, PSMA’s Executive Director donates a copy of PSMA’s 2017 Technology Roadmap to Dr. Maeve Duffy, NUIG Galway, Ireland

We would like to take this opportunity to thank event sponsor and owner PSMA, host Tyndall, our technical sponsors (IEEE PELS, ECPE, CONNECT, How2Power and CPSS), presenters and session chairs, the EnerHarv2018 Workshop and PSMA Energy Harvesting Committees and all who he in putting such an inspiring and impactful workshop together.

Finally, EnerHarv2018 Workshop was only the first step in the creation of our ecosystem. The committee have released the proceedings to attendees and undertaken a survey to gather feedback on what went well, how future EnerHarv workshops can be improved in future in terms of content, structure, location, timing, etc. If you missed the EnerHarv2018 Workshop but would like to learn more or are interested in PSMA 'powering the internet of things' initiatives please visit or contact PSMA Energy Harvesting Committee chairs Mike Hayes ( or Brian Zahnstecher ( to learn more.

Provided by

General Chair
Mike Hayes, Tyndall National Institute

Technical Program Chair
Brian Zahnstecher, PowerRox