HPH337: Wind power and solar power - past, present and future
Oct 25, 2023
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Dr. Derek Taylor discusses the progress in wind and solar power over the last 50 years. He explores the historical use and advancements in solar power, including the development of solar photovoltaics. The podcast also covers the history and challenges of wind power, and reflects on the growth and potential of these renewable energy sources.
Wind and solar power have seen significant growth in the UK, with over a million roofs and around 8,000 land-based wind turbines adorned with photovoltaic panels, highlighting their potential in meeting a substantial portion of Britain's energy needs.
The historical use of wind power for propelling ships and boats, along with the early Greek and Roman practices of orienting buildings for optimal solar exposure, showcases the long-standing presence and continuous advancements in wind and solar power technologies.
Deep dives
Advances in Wind and Solar Power
Dr. Derek Taylor, an expert in renewable energy, discusses the significant progress made in wind and solar power over the last 50 years. He explains that his interest in renewable energy began in the 1970s during the environmental and alternative technology movements. Dr. Taylor emphasizes the complementary nature of wind and solar power and their potential to meet a substantial portion of Britain's energy needs. He highlights the historical use of wind power for propelling ships and boats, as well as the early Greek and Roman practices of orienting buildings for optimal solar exposure. Dr. Taylor also explores the technologies and materials used in modern solar panels, the factors to consider when installing photovoltaic arrays, and the potential use of solar panels in car parks and other unused spaces.
Achievements and Challenges in Renewable Energy
Wind and solar power have experienced significant growth in the UK, with over a million roofs and around 8,000 land-based wind turbines adorned with photovoltaic panels. Dr. Derek Taylor notes that wind power in the UK accounts for about 26% of electricity generation, while solar power is increasingly becoming cost-effective and competitive. He stresses the importance of energy storage and backup systems to compensate for the intermittency of wind and solar energy. Dr. Taylor also discusses the challenges faced in implementing community-level renewable energy projects in the UK, despite their success in Denmark. He concludes by highlighting the need to explore options for heating, as photovoltaics alone may not be sufficient in colder months.
Wind Power through History
Dr. Derek Taylor provides a historical overview of wind power, tracing its origins to ancient times when windmills were used for grinding grain and pumping water. He highlights the innovations in windmill technology, such as the Dutch invention of the fantail and different sail materials. Wind power gained prominence in Britain, with over 10,000 windmills used for various purposes. Today, the focus has shifted to large-scale offshore wind farms, facilitated by Britain's shallow seabeds. Dr. Taylor discusses the potential of floating wind turbines, which could leverage less-constrained deeper waters. He also explores the possibility of combining wind farms with agriculture and utilizing floating solar panels to maximize land use.
Considerations in Wind Power Implementation
Dr. Derek Taylor highlights the ease of implementing land-based wind turbines, noting that their footprint is minimal, with access roads being the primary infrastructure required. He emphasizes that wind turbines generally have minimal impact on animals and can coexist with agricultural activities. Dr. Taylor mentions the feasibility of community-scale wind power projects and the contributing factors for their success. He also addresses transmission losses and discusses the advantages of offshore wind turbines. However, he acknowledges the challenges posed by governmental policies and the necessary expertise for successful community-owned wind projects.