Meghalaya is one of India’s eight states making up the country's rich bio- and ethnically-diverse northeastern region.  Since 2013 HPNET members have worked to advance community-scale hydro in Meghalaya for last-mile energy access:

• In 2013, International Rivers and the Nagaland Empowerment of People thru EnergyDevelopment (NEPeD) hosted a micro hydro exchange event focusing on NE India, which connected HPNET to the Meghalaya Basin Development Agency (MBDA).
  
• In 2015, HPNET enabled India practitioners to attend HPNET’s Members Gathering held in Indonesia at the Hydropower Competence Center (HYCOM), connecting them to Pt entec Indonesia.
  
• In 2016, MBDA and HPNET held a regional exchange in Meghalaya, with VillageRES and PT entec Indonesia as co-facilitators.
  
• In mid-2019, International Rivers and partners, including HPNET, hosted a tri-country dialogue in Meghalaya, with CSOs and local practitioners from Nepal, Myanmar, and India.
  
• In late 2019, HPNET supported a reconnaissance field visit to understand field-based challenges to pico hydro scale up in NE India.
  
• In 2021, HPNET and International Rivers held a three-part virtual exchange focusing on  Ganges, Brahmaputra, Meghna, and Salween (GBMS) Rivers, providing regional inspiration from across S/SE Asia and customized capacity building.  
  
• The 2021 event included a special keynote by Mr. Augustus Suting, Special Officer at MBDA.
  

In between each of these milestones have been strategy dialogue among members. As such, when MBDA released a tender to accelerate pico hydro for rural electrification, HPNET members already had working relationships and a keen understanding of challenges and key solutions to leverage the opportunity.
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Below Mr. Ramasubramanian Vaidhyanathan (“Rams”), who has long been committed to the sub-region, provides a brief and exciting update on the most recent technical developments brought forth by a partnership between HPNET members VillageRES and Pt entec Indonesia.

To date an estimated 1000 villages remain unelectrified in the northeastern state of Meghalaya in India, out of approximately 6000 villages.  In 2022, MBDA identified about 200+ micro hydro sites for implementation located throughout the state in communities of the Khasi, Jaintia and Garo ethnic tribes.  The identified potential for most of the sites was 3 kW.  A few had a much higher potential but for this tender, projects were limited to 5 kW.

VillageRES (Village Renewable Energy Systems India Private limited) participated in the tender in partnership with EMSYS Electronics Private limited, a solar energy company based in Bangalore. The consortium was awarded 45 sites located throughout Meghalaya.   
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VillageRES entered into a manufacturing license agreement with PT entec Indonesia to manufacture their new cross flow turbine design with 150mm diameter runners. The turbine is called CFT 150/21.

The fabrication began in July 2022.  Pt entec Director, Mr. Gerhard Fischer, and the team helped us a lot with fabricating the first few pieces – updating drawings, dimensions, a few design corrections, etc. We fabricated the units in the south Indian industrial hub of Coimbatore, in the state of Tamil Nadu. 
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We are very pleased with the results: the turbines have come out very well made and were cost effective to fabricate. We also tested a few of the turbines at a site in Meghalaya and the performance was fantastic. We will be assessing the performance of this model more thoroughly once all the units are installed.

During the installation process, we found that many of the sites were situated right next to a waterfall and the penstock was installed at nearly a 90 degree angle without any proper support. While it was logical and easier to select sites that had an obvious sufficient head, other aspects, such as the design of the intake structure, penstock route, and penstock support appeared to have been completely overlooked. We realised that the on-site assessment methodology that we utilize in training has to be much more detailed and maybe periodically conducted to continue to build the capacity of the sector’s local personnel. Unless this is carried out, the project sites are prone to failure within a year or two of the installation.

For nearly four decades, SIBAT (Sibol Ng Agham At Teknolohiya)  has supported sustainable rural development throughout the Philippines, including through the advancement of community-based renewable energy solutions.  SIBAT has always championed a highly collaborative approach prioritizing community involvement and leadership at every stage of the micro hydro project lifecycle, from project initiation to completion and beyond.  The following provides a glimpse into some of SIBAT’s micro hydro endeavours from 2022 with communities in the Cordillera region of Luzon. 

System Upgrade in Brgy. Mataragan, Malibcong, Abra

In January 2021, SIBAT began working with the community of Brgy. Mataragan, Malibcong, Abra to install a new micro hydropower system (MHP). This new system will be an alternate system for their existing system during summer.  The pre-existing and new system have the same source and forebay but have different penstocks and powerhouses. The old system has a higher head but cannot accommodate their needs for irrigation during Summer, since its tailrace goes directly to the river. On the other hand, the new system has a smaller head but can accommodate the community’s needs for irrigation since the tailrace will be connected to their irrigation system. The old system’s capacity is 25kW while the new system can only produce up to 15kW.  The project is nearing completion following unforeseen delays in 2022.

Crossflow Turbine Fabrication - Sitio Saltan Brgy. Balbalasang

SIBAT has also been supporting an ongoing project to install a new micro hydro system in Sitio Saltan Brgy. Balbalasang, Balbalan Kalinga.  A machinist at SIBAT completed the fabrication of the crossflow turbine for the new system at SIBAT's Center for Renewable Energy and Appropriate Technology (CREATech).  The new system has a design power output of 15KW which will power the whole sitio (i.e. hamlet/territorial enclave).  It is hoped that the installation of a system separate from the Brgy. Balbalasang micro hydro will completely allow the communities to power their other appliances and machinery.

Operator’s Training - Apayao Cluster

From April 20-21, 2022, SIBAT ran an Operator’s Training in Apayao Province, in the Cordillera mountains of Northern Luzon.  As part of the training, 50 participants were grouped into small teams of 5 members each to disassemble and reassemble a crossflow turbine, in order to learn its components. They were guided by SIBAT staff.

​The 6-wheeler truck of the Katablangan Indigenous Farmer’s Association (KIFA) did not survive the challenges the road posed on the journey to Upper Katablangan, Conner, Apayao. Thus, SIBAT’s 4WD pickup truck helped to haul the materials. After the 15km travel (approximately two hours), materials needed to be transferred again since the materials can only be hauled by a motorcycle or by manually carrying them because of a narrow road. It took four round trips for SIBAT’s pickup truck to haul all the materials since it is not that big.

Operator's Training - Kalinga Cluster

From October 20-21, 2022 SIBAT held another Operator’s Training in the Kalinga Province, which involved both theoretical and hands-on lessons to train local micro hydro operators on calibration and troubleshooting for synchronous alternators. 50 operators and officers attended the training from 10 different communities in Kalinga Province. 

​In addition, a separate workshop was conducted for the officers of the MHPs. The workshop was attended by officers with operating MHPs and non-operating MHPs. During the workshop, officers of non-operating MHPs shared the reasons why their systems shut down and indicated that they want to rehabilitate their MHPs to operate again. Officers of operating MHPs also shared what are the current issues and problems they are encountering in operating and maintaining the MHPs. Before the workshop was finished, the whole group formulated solutions to prevent shutdowns and solve the current and future issues that they might encounter.

Rehabilitation of Brgy. Talalang, Balbalan, Kalinga Micro Hydro System

Finally, a success was celebrated in Brgy. Talalang, Balbalan, where the community’s MHP system was successfully rehabilitated. After 2 decades of frequent shutdowns and 8 hrs/ per day operation, the Talalang MHP system almost shutdown for good, but with the help of SIBAT, the system now operates for 24 hrs/day. 

The small-scale hydro sector for energy access in Nepal has achieved immense success over the last fifty years, with over 3000 communities electrified using mostly localized technology.  Amidst new challenges and opportunities, policy, technology, and institutional solutions continue to emerge from Nepal’s long committed and experienced ecosystem of stakeholders.

Such a vibrant, living localized sector in Nepal has been made possible thanks to the pioneers who sacrificed professionally and personally to advance the sector as a whole.  One such early pioneer of micro and mini hydro development in Nepal is the late Mr. Shyam Raj Pradhan, the founder of Nepal Yantra Shala Energy (NYSE), now the leading small-scale hydro manufacturer and service provider in Nepal and in South Asia, serving the sector globally. ​

​Public, non-government, and private sector actors each play important roles in the small-scale hydropower landscape.  We are often inspired by the tenacity of locally-rooted, private entrepreneurs who are unperturbed by the challenges that come with establishing and running a financially viable business that also serves rural communities.  In this guest blog post, we hear from Mr. Komarudin, an entrepreneur who wears many hats as a manufacturer, developer, technical consultant, and micro hydro champion in Bandung, Indonesia.  He introduces us to his business, Protel Multi Energy (PME), which has been supporting rural energy access for over a decade. 

Protel Multi Energy focuses on the manufacturing of affordable Digital Electronic Load Controllers (ELCs), as well as micro hydro and pico hydro turbines (crossflow and Pelton) for rural electrification all over the world. Besides product manufacturing we also assist villagers and project owners in planning and designing micro hydro schemes. Sometimes we offer technical supervision on construction and installation. We are also able to do turnkey projects under certain circumstances.

Nowadays, especially in Indonesia, we are developing many micro hydro projects through Dana Desa (village funds). We often provide support for each stage, starting from site survey, to planning and design, project supervision, supply of equipment and post-installation management. Due to their lack of knowledge and experience, we assist villagers to develop their project as their own responsibility, under our supervision to make sure it runs well with a sustainable approach and reliable equipment.

To learn more about PME and access many useful tutorial videos, visit our YouTube channel!

Since 1984, SIBAT has fostered a network of dedicated, local champions committed to advancing sustainable solutions in their communities. A country-wide Filipino people’s network, SIBAT supports renewable energy applications, sustainable agriculture techniques, and water access solutions.

SIBAT’s community-based, sustainable approach has enabled long-lasting energy access for many communities in Abra, Philippines. Last year, SIBAT upgraded the Barangay Dulao micro hydro system, which had been in operation for 25 years! Local capacity building is an important element of their sustainable approach, and is supported through training offered at SIBAT’s Center for Renewable Energy and Appropriate Technology (CREATech) in Capas, Tarlac, Philippines. In fact, SIBAT takes part in knowledge sharing to build capacity across the region; for instance, in 2019, practitioners from Philippines and Malaysia gathered for a training session on Pelton micro hydro turbine fabrication, organized by SIBAT and HPNET.

To stay in the loop on SIBAT’s inspiring community-centred work, we encourage you to scroll through and ‘like’ SIBAT’s Facebook page. There you’ll find insightful updates on technical training for local community members, open source mini-grid management tools, videos featuring socio-economic impacts of energy access, and much more. Recently, SIBAT has shared updates on their efforts to distribute facemasks and supplies to vulnerable, indigenous communities. Be sure to ‘like’ SIBAT’s page to show your support and learn about their ongoing initiatives.
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We’re excited to share the new edition of our video podcast series Streamside Chats!  The platform allows us to dialogue with experienced practitioners about their in-depth experiences in developing sustainable hydro mini-grids. It brings together grassroots innovators and international experts, providing firsthand insights from the field, framed within multi-thematic analysis. 

Intro to Speakers

Dipti Vaghela, the Manager of the Hydro Empowerment Network (HPNET), introduces the speakers, Bikash Pandey, Director of Clean Energy at Winrock International, and Bir Bahadur Ghale, Founder and Managing Director of Hydro Concern Pvt. Ltd. and provides an overview of the topic.  Both speakers are renown for their pioneering work of over 35 years.
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PART 1:  Start up and scale up of hydro mini-grids in Nepal

Dipti chats with Bikash about the key actors that paved the way for micro hydro development in Nepal and the stages through which the sector evolved over the past four decades.  The micro hydro sector is known to have its earliest roots in Nepal within the S/SE Asia region.  In this discussion, we delve into the pivotal reasons for which the country has one of the most dynamic micro hydro programs around the world.  Tune in to hear how multi-actor collaboration resulted in an ecosystem that scaled-up hydro mini grids, enabling energy access in over 3000 communities in rural Nepal. 
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PART 2:  Impact of a social enterprise approach

Bikash dialogues with Bir Bahadur, taking us on a journey of the renown Barpak hydro mini-grid, developed by Bir Bahadur Ghale in his home village 1991, when he was 24 years of age.  Being his first project and having no previous experience, he shares the obstacles he encountered and how he overcame them, including acquiring technical and financial skills to go onto developing hundreds of projects to date.  We also learn about the impact of the devastating 7.8 magnitude earthquake in Barpak, the epicenter of the disaster, the rehabilitation of the micro hydro project, and the critical role it played in rebuilding the village and its economy.  Established using a social enterprise approach, 30 years later the Barpak project is a prime example of a hydro mini-grid that is self-sustainable, providing electricity to over 1200 and many village-based enterprises. Bir Bahadur Ghale's approach has transformed the economic resilience of the community.
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PART 3:  Best practices for economic resilience

In this final part of the 3-part dialogue, we learn about Bir Bahadur Ghale's journey beyond Barpak, gaining insight on how energy access can be accelerated by proven developers.  The dialogue also discusses different types of ownership models and the factors for success of each.  The conversation concludes with policy recommendations to accelerate energy access in Nepal, and the role of energy access in pandemic era economic recovery. 
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Join the discussion!​

Over the next few days, we’ll be posting the questions below, in our post-Chat social media forum.  Share your insights on Twitter, Facebook, and LinkedIn.
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• How can governments better support local manufacturers, producing local jobs and enhancing skill sets?
• What are the different roles that subsidies and loans have in scaling up mini-grids?  Can they complement each other?
• What can help enable communities to identify financially viable productive end use?
• What productive end uses can especially be leveraged by and benefit women?  
• How have mini-grids played a role in economic recovery and resilience of communities in the pandemic age ? 
• What types of policies can support community-private partnerships to accelerate energy access?

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In case you missed it
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Check out our first edition of StreamSide Chats in which we discussed the role of micro hydro in contributing to long term rural economic recovery and resilience in the pandemic era. 

📽️:  StreamSide Chats - Edition 1, Recovery & Resilience

Locally-developed micro hydropower

AIDER has built eight MHPs, ranging from 7.5 kW to 100 kW, electrifying a total of about 450 households in rural municipalities of the Analamanga and Atsimo Andrefana regions.  Five of the projects are owned and operated by AIDER.  All of the systems use turbines that have been locally manufactured by AIDER, thereby having generated local employment.  In addition to providing reliable electricity to households, the MHPs power town halls, police stations, clinics, churches, schools, and street lighting. ​

Last quarter HPNET Board of Representatives member Biraj Gautam described our project, shared about the development of a Turgo turbine design, appropriate for local manufacturing in Nepal.

While common in larger scale hydropower and with some off-the-shelf products available, the Turgo turbine is not currently manufactured by micro-hydropower companies in Nepal. As a medium head turbine, the Turgo offers a viable option for sites where the characteristics make the choice between Pelton and Cross-flow turbines difficult.

This article developed by ​Joe Butchers, PhD candidate at the University of Bristol, provides an update on our progress in the project so far.                                                 

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Site Visit

Unfortunately, the ongoing coronavirus pandemic has prevented PEEDA staff from visiting the field site. A feasibility study is required to find out the technical and socio-economic features of the site and the community. Technically, we need to evaluate the current status of the civil structures and installed equipment. In addition, we require measurements of the powerhouse layout so that the new turbine can interface with existing components. From a socio-economic perspective, we want to understand how the plant is managed, whether the plant generates sufficient income, and assess the opportunity to maximise the plant’s capacity factor. It is important that we ensure that the plant is sustainable in delivering electricity to the community. We continue to monitor the coronavirus situation and hope to be able to visit the site when it is safe to do so. 

3D CAD Design
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Using the head and flow rate from the site and our scaling model, it has been possible to begin the detailed design of the Turgo turbine. The long-term intention is to develop a range of Turgo turbine designs appropriate for sites across the micro-hydropower range. We have been developing calculation sheets for all of the key components which allow dimensions to be determined. We have developed a parametric 3D CAD model that is linked to the calculation sheets. This allows us to quickly adapt the design depending on inputs into the calculation sheet. The 3D design is taking place collaboratively between the Electrical Energy Management Group at the  University of Bristol and Nepal Yantra Shala Energy. The design objective is to produce a design that can be readily manufactured in Nepal with existing machinery and readily available materials. It is expected that detailed design will be completed soon allowing the production of engineering drawings to begin. Initially, the focus is on developing a complete design package for the site in Taplejung. This will include 2D engineering drawings, bill of materials, and supporting 3D CAD files allowing the design to be manufactured in Nepal. Subsequently, we will use the parametric 3D model to generate multiple design packages for the complete operational range.​​
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​This article was written by Joe Butchers, PhD candidate at the University of Bristol. The project is titled Upscaling locally manufactured Turgo Turbine: Dissemination and Demonstration includes the Electrical Energy Management Group at the University of Bristol, PEEDA, Nepal Yantra Shala Energy, Turbine Testing Laboratory at Kathmandu University and HPNET as project partners, and is funded by Energize Nepal.  The work undertaken by the University of Bristol is also funded through an EPSRC Impact Acceleration Account titled Development of an open-source Turgo turbine design tool.

​The unit has been installed in Naubise, Dhading which is about 22 km from Kathmandu Valley. This unit is available for anyone interested to see it in operation.

To introduce a new micro hydropower technology to Nepal, it was important to understand the capability of micro hydro companies and the manufacturing processes that are available. This information can be used to ensure that the design of all components for a new type of turbine is appropriate for manufacture in the context of Nepal. A thorough study was conducted of the Nepali manufacturing companies which are based in Kathmandu and Butwal, central Nepal. Our study showed that manufacturers in Nepal tend to have access to the same equipment and materials, meaning that the processes for fabricating Turgo turbines tends to be very similar. However, as casting is an external process, the interface between the micro hydro companies and casting companies is a potential risk to the quality and accuracy of the Turgo cups. ​

Next Steps

The next steps for the project are to increase the technology readiness level of the Turgo turbine in Nepal. This will enable manufacturers to be equipped with all of the necessary information to design, manufacture and install Turgo turbines. A joint effort of all the partners,  including HPNET, will be facilitated to improve technology readiness. There are two parts to this future research:

• Workshop on Turgo Design and Manufacture

This workshop will provide the information needed for key stakeholders to be able to identify potential sites for the Turgo turbine, size and design the turbine system, manufacture the Turgo runner, and install and test the system. Both theoretical and practical support will be delivered in the workshop to ensure that a good understanding of the turbine is developed in the Nepalese micro hydropower manufacturing community.
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• Open-Source Repository of Turgo Turbine System Design and Webinar

The scalable tools and drawings for the Turgo turbine will be placed in an open and free web-based repository, enabling access for any stakeholder that is interested in the Turgo turbine. This will allow micro-hydropower manufacturers, in Nepal and worldwide, access to the necessary details to construct a complete Turgo turbine system. Alongside the drawings, guides will be developed to enable the knowledge generated from both projects to be shared with the audience, for example key constraints in casting Turgo cups, jigs required to assemble the runner, and how to select an appropriate site for the turbine.
The project team will also install a micro hydropower scale Turgo turbine at a site to demonstrate its potential for the future. With these plans in place, we hope the future for the Turgo turbine in Nepal is bright!

This article was written by guest blogger and HPNET Board of Representatives Member, Biraj Gautam, who is the Research Team Leader of the project and Chief Executive Officer at People, Energy and Environment Development Association (PEEDA) in Kathmandu, Nepal.

Last month, practitioners from Philippines and Malaysia gathered for a training session on Pelton micro hydro turbine fabrication. The session was the second part of a two-part training organized by HPNET and Sibol Ng Agham At Teknolohiya (SIBAT), to strengthen local capacities in fabrication and manufacturing.

The training responded to the knowledge exchange needs of HPNET Members in the Philippines and Malaysia who require skills to design and build Pelton micro hydro turbines.

Following an online training in November, the in-person training ran from December 2 - 7 and was held at SIBAT's Center for Renewable Energy and Appropriate Technology (CREATech) in Capas, Tarlac, Philippines. The overall aim was for participants to acquire knowledge of the design, manufacturing and testing of Pelton turbines, including fabrication of the Pelton runner assembly.
Participants benefited from an opportunity for hands-on learning, in addition to technical and theoretical presentations. 

Within Pelton Turbine Design, sub-topics covered included:

• Single and multi jet turbines;
• Vertical and horizontal axis turbines;
• Direct and belt drive systems;
• Net head calculations and shaft calculations;
• Pelton runner sizing;
• Bearing and belt selection;
• Other components.

The resource person for this training was HPNET Member Mr. Ajith Kumara from Simple Engineering, a senior micro and mini hydropower specialist based in Sri Lanka. Mr. Kumara has extensive experience training practitioners in design and fabrication aspects of various electro-mechanical components of small-scale hydropower.

This training was made possible by SIBAT, WISIONS and Simple Engineering.

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Last week, HPNET members in Indonesia and Malaysia came together to share their micro hydropower expertise and support each other's important work in energy access. HPNET Board members Gerhard Fischer and Ardi Nugraha of PT Entec Indonesia visited the TONIBUNG team at CREATE in Sabah, Malaysia to provide input on turbine design and fabrication techniques.

TONIBUNG has pioneered community-based micro hydro in Malaysia, working in partnership with  remote, indigenous communities for over 25 years. Despite their ample experience and expertise, the team is always looking for opportunities to improve their techniques and expand their impact.

HPNET facilitated the start of the partnership between TONIBUNG and PT Entec, way back when, and the network has benefited immensely from the ongoing contributions of both organizations. It is great to see continuous knowledge exchange (often self-initiated, as in this case) between these long-standing HPNET Members.

Things progress quickly at Tonibung, and by March 2015, we had a site selected for crossflow implementation in a remote Murut village of the Bornean interior called Saliku. Pulling once again from HPNET’s wealth of knowledge and resources, we contacted a legendary (and prominently open source) turbine designer, Owen Schumacher, whose 20+ years working in Afghanistan yielded the implementation of hundreds of community micro hydro sites. Owen graciously afforded us personal, in-depth design guidance, recommending a crossflow design branded the “Traditional Mill Turbine”, or TMT, by his organization, Remote HydroLight.

Fabrication of Tonibung’s first crossflow turbine for real-world application began with the TMT-100 (so named for its 100mm effective width) in late April 2015 and continues to this time of writing, with fabrication expected to be completed by July 2015. You can stay informed about CREATE’s crossflow fabrication, and all other Tonibung activites, on their Facebook page. The open source nature of Owen’s simple TMT design allows for, and necessarily encourages, modification by workshop technicians around the world according to their local context and conditions. A complete list of Remote HydroLight’s open source turbine offerings can be found here, and their contribution to the field of open source Electronic Load Controllers (ELCs) can be found here.

Certainly, there is not enough space in a single blog post to identify all, or even most, of the influencers who have blazed the trail for me to pursue community micro hydro, but suffice it to say that my experience and good fortune has depended principally on the kindness of mentors, peers, and role models to help me find each new rung of the ladder. If one thing is certain, Laurent’s assurance to me lo those 5 years ago still holds as true today as it ever did. “All are welcome in this field -- the technology is built for everyone. There are many people who will guide you along the way, if only you show the dedication.”


By Patrick Pawletko, HPNET member