Open Position at the Schatz Center: Research Assistant or Engineering Technician

We are currently seeking one or more Research Assistants or Engineering Technicians to work at the Schatz Center in Arcata, California. Based on background skillsets, project needs, and interests, the selected applicant(s) will work in one or more of the following active research areas:

  • Offshore Wind Power: Examine the socioeconomic and policy dimensions of offshore wind power in Northern California by conducting stakeholder outreach and evaluating policies at the local, state, and federal levels.
  • Off-Grid Solar for Rural Electrification – Product Performance Testing: Conduct laboratory and desk-based research, data analysis, and report writing/review to support deployment and quality assurance of off-grid solar electricity and/or solar water pumping systems in Africa and/or South Asia.
  • Off-Grid Solar for Rural Electrification – Analysis of Solar Product Users, Technology, & Impacts: Perform analysis of several nationally representative household energy surveys to characterize solar product users. Model environmental and welfare benefits/impacts of energy transitions. Develop and apply tools and approaches to assess the market-readiness of off-grid solar products.
  • Bioenergy: Analyze the performance of biomass conversion systems with physical testing and data analysis. Assess the quality of biomass and biochar products by conducting laboratory tests and physical assessments. Evaluate the market for biochar by designing and conducting interviews with biochar producers and consumers.
  • Renewable Energy Microgrids: Assist with microgrid and EV charging station design, permitting and regulatory processes. Assist with CAD drawing. Assist with evaluation of system benefits and business model. Construction observation.
  • Clean Transportation: Data processing and analysis of electric vehicle load projections. Perform optimization modeling to develop vehicle charging infrastructure. Review and apply equipment specifications. Contribute to translating analysis results to real world scenarios.

Application Deadline: All application materials must be received by 4 pm Pacific Time (US), Wednesday, December 19, 2018. A six-month commitment is required. Reappointment is desirable but contingent on funding, workload requirements, and performance.

Two technicians work with a solar module

Schatz engineering technicians measure the IV curve of a PV module

Schatz Energy Fall 2018 Newsletter

Page 1 of the Schatz Energy news

Our twice-annual print newsletter is now available to download. Features include:

  • The Schatz Center roof goes solar
  • A message from the Director
  • Project announcements and updates
  • Student research 2018
  • Lighting Global Quality Assurance updates
  • Northern CA coast offshore wind feasibility

Download the Fall 2018 Schatz Energy Newsletter

Open Position at the Schatz Center: Student Research Assistant

We are seeking a Student Research Assistant (SRA) to work on the development of an electric bus charging infrastructure optimization model. This work will involve programming in the R language, data processing and analysis, and basic GIS work.

The anticipated start date is on or near January 16, 2019. A one-year commitment is requested. This position is part-time, with an expected time base of 10 hours per week during the academic year and 20 hours per week during the summer. This is a temporary, non-benefited, non-exempt (hourly), non-state position. Compensation will be $11.28-$17.82 per hour, depending on skills and experience.

Application Deadline: All application materials must be received by 4 pm Pacific Time (US), Monday, December 17, 2018.

Students on the lawn of the Schatz Center

Student fellows, docents, and assistants at the Schatz Energy Research Center

Open Position at the Schatz Center: Research Engineer or Energy Analyst

We are seeking a research engineer or energy analyst to join our team in Arcata, California. The successful applicant will contribute technical and/or analytical content and assist with project implementation in one or more project areas including electric power systems, renewable energy system deployment, clean transportation, energy planning and policy, energy system integration, and/or bioenergy. Depending on skills and experience, the selected candidate may be hired for a mid-level or senior-level position.

This work provides an opportunity to make substantive contributions to the development of clean and renewable energy. (Learn more about our capabilities and our current projects…)

Application Deadline: The position is open until filled. Application materials received by 4 pm Pacific Time (US), Wednesday, December 19, 2018 will receive first consideration.

Schatz Center from above

Director’s Note: November 2018

Headshot of Arne Jacobson

The Camp Fire in Butte County has been the most damaging wildfire in California history. Hurricanes, wildfires, cyclones, floods, and heat waves are taking a heavy toll on communities around the globe. While no single weather event can be linked directly to climate change, weather disasters as a whole are expected to become increasingly common and destructive as climate change progresses.

The Intergovernmental Panel on Climate Change’s (IPCC) recent special report on the prospect of limiting climate change to a 1.5°C global average temperature rise relative to pre-industrial conditions indicates that global net human-caused greenhouse gas emissions need to decline before 2030 by about 45% relative to 2010 levels. It is imperative that we do all we can to make progress toward this goal given the expected damages associated with a failure to do so. Simultaneously, given the climate disruption that is already baked into the system, actions to reduce vulnerability and increase resilience to climate damages are also needed.

Our work at the Schatz Center is strongly motivated by these challenges. Our renewable energy microgrid work combines efforts to integrate more solar power into the electrical grid while increasing resilience for critical infrastructure including emergency response centers, fuel stations, airports, and Coast Guard facilities. Likewise, our upcoming feasibility analysis of offshore wind development along California’s northern coast will explore a large potential new clean energy resource for our state. Through these and other efforts, we continue to promote clean and renewable energy and to otherwise take measures to address global climate change.

Measures to address climate change will be most effective if they are crafted by diverse teams from all walks of life. Over the past six months, we have been doing some introspective work at the Center related to staff diversity and an inclusive work environment. We held an all-day retreat in August that focused on these topics, and we have begun implementing measures identified at the retreat and subsequent staff and subcommittee meetings. As we work to make progress, I appreciate the thoughtfulness and initiative that our team has brought to the table. We are committed for the long haul when it comes to making a positive difference regarding diversity and inclusion. The successes that we achieve will make us a stronger and more effective organization.

A group photo of 35 staff standing outside the Wharfinger Building in Eureka

Schatz team at the August retreat

I will close by welcoming Carisse Geronimo and Grishma Raj Dahal to the Schatz Center. Both are graduate students in the Energy Technology and Policy (ETaP) master’s program, and they joined us in August. Carisse is the first recipient of the Donald and Andrea Tuttle Fellowship for Clean Energy Studies. She is working with Dr. Sintana Vergara and other Schatz Center colleagues on biomass energy, waste management, and associated opportunities to reduce greenhouse gas pollution. Grishma, who received the Schatz Energy Fellowship, is working with our off-grid energy access team on research related to off-grid solar power. We are very glad to have them on our team.

Happy winter holidays, and goodbye until next time.

~ Arne

Northern CA coast offshore wind feasibility study

On October 25, the Schatz Energy Research Center at Humboldt State University was awarded a grant from the California Ocean Protection Council (a division of the California Department of Natural Resources), to study the feasibility of offshore wind generation for the Northern California coast. The $623k grant will assess the environmental impacts, determine the required modifications of coastal infrastructure, examine stakeholder benefits and impacts, and evaluate local, state, and federal policies as they relate to offshore wind development.

A map of the northern CA coastal region included in this analysis, from Fort Bragg to southern Del Norte County. Average wind speeds are shown.

The feasibility analysis will cover selected areas in this region

Offshore wind energy is likely to play an important role in meeting California’s targets for carbon neutrality by 2045. The offshore wind resource near Humboldt Bay is among the best in the nation, with wind speeds often exceeding 10 meters per second at 90 meters above the ocean’s surface (Schwartz 2010), which is the approximate height of wind turbines. The National Renewable Energy Laboratory estimates that the state’s offshore winds have the technical potential to produce 392 TWh per year, about 150% of California’s annual electricity load (Musial 2016).

Analysis of North Coast wind speed data has shown that the wind power is fairly consistent throughout the day (Musial 2016) when compared to other renewable resources such as land-based wind or solar. Offshore wind could provide a more consistent power flow to the grid, which in turn would support increased integration of technologies with highly variable generation throughout the day, such as solar. But California’s deep ocean floor, sensitive ecosystems, seismic activity, and protected coastlines, will require careful research and development in order to responsibly develop offshore wind projects. Engaging California’s coastal communities — who have the most to lose from sea level rise due to climate change — in early research and planning is critical for successful future development efforts.

The project is expected to kickoff in early 2019. For this project, the Schatz Energy Research Center is collaborating with ecological consultants from H.T. Harvey and Associates, coastal engineering specialists from Mott MacDonald, and faculty in the Economics and Environmental Science & Management departments at Humboldt State.

References

Lighting Global Quality Assurance: test method and standards updates

As a growing and dynamic industry, the off-grid solar market encompasses a wide diversity of product quality. Some products are designed and manufactured well, while others fall short of expectations for safety, durability, or performance. In many households, purchasing an off-grid solar product is a major financial decision. Poor quality products can lead to market spoilage — in which consumers lose trust in an entire technology. Product standards and testing provide quality assurance for consumers, and support those companies who follow best practices in manufacturing and design.

Starting in 2007, the Schatz Center, working in collaboration with the Fraunhofer Institute for Solar Energy Systems in Germany, helped develop a set of test methods for evaluating off-grid solar product quality. In 2013, a revised version of these test methods was published by the International Electrotechnical Commission (IEC) under IEC TS 62257-9-5. Since 2009, we have worked closely with Lighting Africa, Lighting Asia and Lighting Global World Bank Group initiatives to develop an international program for quality assurance and consumer protection for LED-based off-grid lighting and power systems.

In the last ten years, over 29 million Lighting Global Quality Verified solar lighting products have been sold, benefitting more than 147 million people.

Recent developments:

  • In 2018, we updated the test methods to include a more robust analysis of ports and appliances. This new version of the IEC TS 62257-9-5 was published in June.
  • The Schatz Center renewed and expanded our ISO 17025 accreditation through the ANSI-ASQ National Accreditation Board (ANAB) to be one of the three off-grid solar testing labs internationally accredited to conduct testing according to the new version of IEC TS 62257-9-5.
  • We recently submitted the Lighting Global Quality Standards to the IEC for adoption. Having these standards published by the IEC will create an easier path for government adoption and will help limit the sale of poor quality products in the market.
Brightly illuminated LED products against a black background

A selection of off-grid solar products that have met the Lighting Global Quality Standards

October 18 lecture: Local water innovation through community-university partnerships

Headshot of Lonny Grafman

This talk will share inspiring solutions for water collection, storage, treatment, and conservation that have been created by community engagement.

Lonny Grafman has worked on and led teams for hundreds of domestic and international projects across a broad spectrum of sustainable design and entrepreneurship — from solar energy to improved cookstoves, micro-hydro power to rainwater catchment, and from earthen construction to plastic bottle schoolrooms. Throughout all these technology implementations, he has found the most vital component to be community. His first book shares stories and strategies for communities coming together To Catch the Rain.

Grafman is an engineering instructor at HSU; the founder of the Practivistas summer abroad, full immersion, resilient community technology program; the project manager of the epi-apocalyptic city art project Swale; the Chief Product Officer of Nexi; Managing Director of the BlueTechValley North Coast Hub; and the President of the Appropedia Foundation, sharing knowledge to build rich, sustainable lives.

Download the event flyer

The Sustainable Futures Speaker Series at Humboldt State creates interdisciplinary discussion, debate, and collaboration around issues related to energy, the environment, and society. Fall 2018 lectures are held on Thursdays from 5:30-7 pm in HSU Siemens Hall 108 (with the exception of Catherine Sandoval’s talk on November 1, which will be held in the Native American Forum / BSS 162). For details on upcoming events or to request accessibility accommodations, visit our series events page or call (707) 826-4345.

A pipe sliced in half to catch rain

A sliced PVC pipe is ready to catch rain at the Pedregal Permaculture Demonstration Center in San Andres Huayapam, Mexico

Student research developments: summer 2018

This summer, thirteen students contributed to Schatz Center research projects in smart grids, bioenergy, wind, and off-grid energy access.

SMART GRIDS

Craig Mitchell provided construction observation at the Solar+ installation, tracking the canopy weight in real-time and serving as an onsite liaison between contractors and the Schatz microgrid team. As part of his observation, Craig recorded the installation’s actual daily labor and equipment requirements, to better define the needs for similar projects in the future. He is currently developing a hardware design toolkit that documents lessons learned in the Solar+ installation.

Solar+ students standing outside the Schatz Center

Solar+ student team: (l to r) Craig Mitchell, Thalia Quinn, Ellen Thompson and Rene DeWees

Thalia Quinn, Ellen Thompson and René DeWees have been developing a model to assess the current and future costs of building microgrids that integrate solar, battery storage, and fast EV charging. This model will help define which sites are good candidates for investment, and identify future research and development opportunities. This summer, the team conducted a detailed literature review to assess current and forecasted cost data: Thalia focused on battery storage, Ellen on electric vehicle charging infrastructure, and René on solar PV. They are now refining their cost model and generating a convenience store survey, to understand how current site owners view microgrids and to better assess installation opportunities.

Smart grid design is also evolving to take advantage of demand response technologies. As part of a collaboration with GE & Southern California Edison, Anh Bui developed an algorithm using Python code for estimating the tension between shifting a customer load to benefit the grid versus shifting a load to reduce their bill. Anh also helped with the installation of our new Schatz Solar Array in September.

Anh Bui tightens a solar module on the Schatz Center roof

Anh Bui installs a module for the new Schatz Solar Array

BIOENERGY

This summer, Sabrinna Rios Romero quantified decay rates for the post-harvest residues of seven agricultural crops: corn, wheat, rice, cotton, almond, walnut and grape. These decay rates will allow us to better assess the greenhouse gas (GHG) emission implications of leaving residues in field versus converting them into electricity. This fall, Sabrinna is surveying state foresters to clarify the fate of forest residues — i.e. whether they are piled, burned, or scattered in the field — information which will allow us to more accurately assess emissions following forest harvest. She has also been analyzing biomass samples using a bomb calorimeter and a thermogravimetric analyzer, to measure the performance of a gasifier system.

Cassidy Barrientos conducted a literature review that characterized GHG emissions from wood chip storage (e.g. chip piles at a power plant). Decomposition during storage — and the resulting emissions — are an area that have not been well-quantified, and may represent an important source of greenhouse gases. In September, Cassidy and Schatz Faculty Research Associate Sintana Vergara presented a poster, “Characterizing greenhouse gas emissions from wood chip storage,” and gave an oral presentation “Waste not: Improving the efficiency of using forestry residues as an energy resource” at the ARI Principal Investigator’s Meeting in Sacramento.

Cassidy Barrientos in front of her poster at the ARI conference

Cassidy Barrientos at the ARI Principal Investigator’s Meeting

Max Blasdel continued his ongoing work for the California Biopower Impacts Project. Max is characterizing the field decomposition of woody biomass residues left behind by forestry operations. His efforts comprise a key component of the business-as-usual case used to evaluate the net climate impacts of biomass removal for electricity generation. Max’s project research will form the basis for his master’s thesis in the Natural Resources program here at Humboldt State.

WIND ENERGY

Karsten Hayes developed an initial cost model (using Python and R) for north coast California offshore wind energy. The model includes associated storage needs, and integrates high-resolution offshore wind resource data from the National Renewable Energy Laboratory with load data for Humboldt County and California, drawn from Pacific Gas & Electric and the California Independent System Operator (CAISO).

OFF-GRID ENERGY ACCESS

Eli Wallach and Chih-Wei Hsu developed a method to estimate the number of fossil fuel generators used in low- and middle-income countries, how much electricity they generate, and how much fuel they consume. Their work supports a larger effort to estimate the economic, environmental and health impacts of fossil fuel generator systems used as a primary or backup source of electricity. To inform their assumptions and approach, they drew from multiple sources of data, including dozens of nationally representative household and business surveys. These data helped them understand the intensity of generator use at the country level, and in which sectors they are being utilized (i.e. commercial, residential). Eli and Chih-Wei’s fuel consumption estimates for over 130 countries are currently being utilized to update a widely used air quality and climate impacts model maintained by project collaborators at the International Institute of Applied Systems Analysis.

Schatz fellow Anamika Singh worked this summer with a team led by Dr. Amol Phadke at Lawrence Berkeley National Laboratory. Her research, which included collaboration with Dr. Phadke and Dr. Nikit Abhyankar, focused on identifying the parity price at which renewable energy technologies become feasible for heavy industries in India. Read more in our Fall 2018 From the Fellows report…

Chih-Wei and Anamika also helped with our Schatz Solar Array installation in September.

Tanya Garcia worked in the Schatz Center’s off-grid solar lab this summer, conducting solar product tests — including durability (drop and ingress), safety, and truth in advertising (light output, max power, full battery run time, etc.). She developed communications templates for the test lab network and edited specifications sheets to clarify product test policies. Tanya also helped test an open source electricity monitor, the EmonPi, and provided energy outreach activities for university and K-12 groups. Tanya is continuing her work in the off-grid solar lab this fall.

Tanya Garcia unpacks a solar module in the Schatz courtyard

Tanya Garcia prepares to test a solar module

The Schatz Center roof goes solar

On the last weekend of September, HSU and Schatz Center alumnus Nate Coleman returned to Humboldt State with a team of solar professionals to lead the installation of a photovoltaic array on the roof of the Schatz Energy Research Center. Dodging between downpours, and assisted by Center staff, students, and HSU Facilities Management personnel, the team heroically completed the installation in two days.

The system is now complete except for the final electrical connections and an inspection, and should be live near the end of October. The 20 kilowatt (DC) array will produce an average of 57 kilowatt-hours per day, enough to completely power the Center’s new West Wing, with 25 kWh left over to power the main building.

The eighty modules of the solar array and the proprietary mounting hardware and connectors were donated to Humboldt State from Zep Solar through the efforts of Coleman and Jack West — a member of the Center’s Advisory Board and also an alumnus of the university.

Ahn and Greg insert a module into its place

Anh Bui and Greg Ball leverage a module into position

Later this year, an array display will be installed outside the Center. Visitors will be able to see a live report of energy generated by the array, plus rooftop weather data that directly impacts array efficiency: solar radiation, air temperature and relative humidity, wind speed and direction, and the temperature of the modules. The monitor will also feature project news from the Schatz Center and data from the onsite EV charging station. The interpretive display has been funded by HEIF, the student-run Humboldt Energy Independence Fund, and NorthCAT, the Northern California Center for Alternative Transportation Fuels and Advanced Vehicle Technologies. HEIF also provided the instrumentation for the data acquisition system.

The Schatz Solar Array installation team included:

  • Solar professionals: Brian Atchley, Greg Ball, Nate Coleman, Marcelo Macedo, and Ryan Woodward
  • HSU Facilities: Charles Day, Travis Fleming, Ray Robinson, and Brian Toroni
  • Students: Anh Bui, Carisse Geronimo, Chih-Wei Hsu, Craig Mitchell, and Anamika Singh
  • Schatz staff: Charles Chamberlin, Nick Lam, Peter Lehman, Marc Marshall, Kyle Palmer, Rich Williams, and Jim Zoellick
Nate and Marcelo on the roof

Nate Coleman and Marcelo Macedo prepare the Schatz roof for module installation

Jim and Carisse set a thermocouple on the white backside of a module

Jim Zoellick shows Carisse Geronimo where to place a thermocouple on the back of a solar panel

Jim, Charles and Ray consult the module layout plan

Jim Zoellick, Charles Chamberlin, and Ray Robinson review the module layout plan

Chih-Wei and Ray remove a panel from the stack on the lift, while Charles holds the remainder

Charles Day delivers solar panels via hydraulic lift to Chih-Wei Hsu and Ray Robinson

Craig twists a module mount near the edge of the roof

Craig Mitchell tightens mounting hardware on the Schatz roof

Charles Chamberlin holds the specialized mounting hardware

“The mounting hardware works like a charm.” – Peter Lehman

Marcelo bends close to the roof to view a connection

Marcelo Macedo inspects hardware connections

Anh works at the base of a rain-covered module

Anh Bui attaches modules to the roof

Travis and Ray transport panels in a hydraulic lift with redwoods behind

Travis Fleming and Ray Robinson lift solar panels from the courtyard to the Schatz roof

Nate, Peter and Craig crimp roof bars

Craig Mitchell, Peter Lehman, and Nate Coleman (l to r) prepare the roof for mounting hardware

The installation team stands on the roof next to the assembled array

The module installation is complete!