The 2019 Mayors Forum (part of IREC held in Seoul in October) featured Seoul’s 1 GWp Solar City Initiative. FREE helped the City to design this ambitious program as part of the FREE-Seoul Metropolitan Government (SMG) Memorandum of Understanding (MOU). Dr,Byrne delivered the keynote at the Forum, which drew 37 mayors from 25 countries. Mayor Park Won Soon chaired the Forum.

Seoul Metropolitan Government (SMG) plans to invest $1.5 billion in their strategy to deploy 1 gigawatt (GWp) of solar energy by 2022. As part of the MOU, FREE has provided the modeling and technical assessment of the city’s rooftop potential as hosts of a distributed solar power plant. FREE also calculated the economics of the project and used a financing structure it has developed for city-scale investment in such a project. (FREE has published results of it modeling and financing approach for 5 cities in addition to Seoul: New York City, London, Munich, Amsterdam, and Tokyo.)

In November 2017, Seoul Metropolitan Government (SMG) declared its intention to deploy 1 gigawatt of rooftop solar as part of its “Solar City Seoul” master plan. Over the next five years, Seoul city government plans to invest $1.5 billion to make the project a reality. This is a significant step forward in the future of Seoul’s sustainability contribution and follows in the wake of the very successful first stages of the city’s One Less Nuclear Power Plant (OLNPP) initiative. 1 Under initiatives like the OLNPP, Seoul focused heavily on promoting energy conservation and efficiency improvement. With this new Solar City Seoul plan, the city is ramping up investment in energy production as well. FREE applauds this direction chartered by the Mayor of Seoul, Mr. Park Won-soon.

FREE has been actively advising the city for five years on the prospects of becoming a “solar city.” As part of the Seoul International Energy Advisory Council (SIEAC), Dr. John Byrne has described to city officials the potential of rooftop solar across the 10-million people strong city. FREE has also published several refereed articles analyzing the emergent role of the solar city concept coupled with new priorities, such as policy effectiveness, solar financing support, and market mechanisms available to Seoul to explore this potential in detail. 2 For example, research we have conducted shows Seoul has a full deployment potential of about 10 gigawatts. 3

FREE attended the launch of the initiative. Mayor Park Won-soon and Dr. Byrne were interviewed by leading Korean newspapers on the strategy. During an interview with Kyunghyang Shinmun, Mayor Park underscored FREE’s role, noting that he “had an opportunity to take a view of the downtown area in Seoul from Namsan Mountain with Prof. Byrne. As I talked with him, I realized that Seoul has a significant PV technical potential.” 4

A striking feature of the Solar City Seoul plan is the commitment to increase household-level PV deployment through miniature solar generators installed on rooftops and verandas or so-called “mini-PV” technology. This prong of the plan will engage more than 100,000 households in helping to supply solar energy to the city! This is exactly in tune with the Mayor’s original pursuit of the idea that “citizens are energy.” The initiative will make solar energy a part of the everyday life of Seoul’s citizens and businesses.

FREE has worked extensively on the concept of the “solar city” – the citywide deployment of rooftop solar energy. Our work shows not only that Seoul has significant potential to develop itself as a solar city but that cities like New York, Tokyo, London, Amsterdam, and Munich possess similar resources. 5 Indeed, a paper published in the International Journal of Urban Sciences by the FREE research team highlights the fact that this opportunity is common to most cities around the world. 6 An investigation of the market, finance, and policy considerations associated with solar city deployment found that the concept is not only technically feasible but it also creates practical economic benefits, including job creation and expansion of local green industries, and results in significant environmental benefits by shrinking the city’s carbon footprint by more than 10 percent. 7

“I will make Seoul a place where PV can be found everywhere”, the Mayor said. The FREE team will be there to continue to help make this ambition become unavoidable reality.

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1. FREE published a blog article on the OLNPP initiative which can be accessed at: https://freefutures.org/one-less-nuclear-power-plant-seouls-commitment-to-a-low-carbon-and-non-nuclear-city/
2. For more information on our publications, please see freefutures.org/publications
3. Byrne, J., Taminiau, J., Kurdgelashvili, L., & Kim, K. N. (2015). A review of the solar city concept and methods to assess rooftop solar electric potential, with an illustrative application to the city of Seoul. Renewable and Sustainable Energy Reviews, 41, 830-844. doi://dx.doi.org/10.1016/j.rser.2014.08.023
4. Translated from the Korean newspaper Kyunghyang (article, in Korean, can be found at: https://news.khan.co.kr/kh_news/khan_art_view.html?artid=201712072105005&code=100100
5. Byrne, J., Taminiau, J., Kim, K. N., Seo, J., & Lee, J. (2016). A solar city strategy applied to six municipalities: Integrating market, finance, and policy factors for infrastructure-scale photovoltaic development in Amsterdam, London, Munich, New York, Seoul, and Tokyo. Wiley Interdisciplinary Reviews: Energy and Environment, 5(1), 68-88. doi:10.1002/wene.182
6. Byrne, J., Taminiau, J., Seo, J., Lee, J., & Shin, S. (2017). Are solar cities feasible? A review of current research. International Journal of Urban Sciences, 1-18. doi:10.1080/12265934.2017.1331750
7. Byrne, J., Taminiau, J., Kim, K. N., Lee, J., & Seo, J. (2017). Multivariate analysis of solar city economics: Impact of energy prices, policy, finance, and cost on urban photovoltaic power plant implementation. Wiley Interdisciplinary Reviews: Energy and Environment, , n/a. doi:10.1002/wene.241

FREE facilitated a coast-to-coast tour of innovative energy applications for a delegation from the Seoul Energy Corporation (SEC). Spearheaded by CEO Jin Sub Park, the visiting team included: Jung Min Yu, Chang Woo Cho, and Yong Dae Kim.

SEC is responsible for the supervision of and investment in energy policy programs in South Korea’s capital city of Seoul. In particular, the SEC leads the implementation of the innovative One Less Nuclear Power Plant (OLNPP) initiative which pursues energy reduction targets equal to the production of a nuclear power plant. The visit by the SEC delegation had the goal of observing and learning about innovative, ‘best practice’ energy technology, policy, and financing applications. Lessons learned from this tour might find their way into SEC programming in Seoul.

The tour began with a visit to the San Francisco Department of Environment to go over San Francisco’s climate goals and programming, with a special focus on the CleanPowerSF initiative and new efforts to integrate solar power and storage. CleanPowerSF is the city’s Community Choice Aggregation (CCA) program, which allows cities and counties to partner with their utility to offer clean energy at competitive rates to residents and businesses.

The SEC’s next destination was Philadelphia where it was hosted by FREE at the office of Drinker Biddle & Reath, LLP. The Deputy Treasurer of the Commonwealth of Pennsylvania provided a warm welcome letter to the delegation, encouraging the SEC to consider the Pennsylvania Sustainable Energy Finance Program (PennSEF) as a model that could be implemented in Seoul – PennSEF is a partnership program between the Pennsylvania Treasury and FREE.  To illustrate how the work done by FREE could inform the operations of the SEC, FREE team members presented the lessons learned in setting up large-scale energy efficiency, on-site renewable energy, and microgrid applications such as the Delaware Energy Efficiency Bond Series, the PennSEF program’s LED Street Lighting Initiative, and a Philadelphia Solar 86 MWp Finance Opportunity. Specific attention was paid to financing and policy challenges facing the SEC delegation and how some of the innovative elements of FREE’s work could potentially help overcome these challenges. FREE made several suggestions regarding the organization of research for SEC’s Research Institute to consider, based on FREE’s own efforts to integrate a research arm into the foundation’s institutional structure. A copy of FREE’s presentation is included here.

The SEC delegation and the FREE team in Philadelphia. From bottom left to bottom right: Baird Brown, Jin Sub Park, John Byrne, Joohee Lee. From top left to top right: Jeongseok Seo, Chang Woo Cho, Yong Dae Kim, Job Taminiau, Soojin Shin, Jung Min Yu.

Members of the FREE team then accompanied the SEC delegation to Princeton University to discuss their microgrid application and thermal energy storage strategy. The Princeton microgrid system includes a district energy system that provides electricity, steam, and chilled water to power, heat, and cool the buildings on the university campus. In emergency situations, the microgrid can operate independently from the grid – during the 2012 Hurricane Sandy, the system was able to continue operation while the rest of the grid was down.  A key innovation of the Princeton facility is its capacity to sell ancillary services to the utility grid based on an automated control system that calculates optimum economic benefit of the range of services available from its microgrid.

The final leg of the tour involved a visit to an innovative community energy governance model in New York City. The Brooklyn Microgrid is a network of neighborhood relationships which relies on peer-to-peer transactions built on blockchain technology. Operated by start-up LO3 Energy, the transactive system allows for direct interaction between neighbors in trading power to each other without requiring involvement from the utility.

It was an honor for FREE to host the SEC delegation and we look forward to working together in the future.