4.5 Article

Offshore versus onshore: The underestimated impact of onshore wind and solar photovoltaics for the energy transition of the British Isles

Journal

IET RENEWABLE POWER GENERATION
Volume -, Issue -, Pages -

Publisher

INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/rpg2.12840

Keywords

hybrid renewable energy systems; renewable energy policy; renewable energy sources; solar energy conversion; sustainable development; technological forecasting; wave and tidal energy; wind power

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This study investigated the British Isles' transition to 100% renewable energy by 2050. Three pathways for the entire energy system were examined in 5-year time steps and hourly resolution. The results showed that transitioning to 100% renewable energy is more economically attractive than the government's strategy involving nuclear power and carbon capture. Increasing the share of onshore wind and solar photovoltaics further reduced costs and avoided the risks of nuclear technology.
The British Isles, consisting of the United Kingdom and the Republic of Ireland, were investigated for a sustainable energy system transition towards 100% renewable energy in 2050. Under given framework conditions, three pathways comprising the entire energy system were investigated in 5-year time steps and hourly resolution applying an advanced energy system modelling tool and identifying the lowest cost solutions. The British Isles were structured into 10 sub-national regions. Special attention was paid to the high offshore wind potential of the British Isles, as well as the limited societal acceptance for onshore wind in the United Kingdom. The results indicate that a transition to 100% renewable energy is economically more attractive than the governmental strategy that involves nuclear power and fossil carbon capture and storage. The total annualised system costs can decrease to 63 beuro and a levelised cost of electricity of 40 euro/MWh if onshore wind and solar photovoltaics are allowed to be built to a higher extend. High levels of electrification and sector coupling are the main reasons for decreasing primary energy demand. The multiple risks of nuclear technology can be avoided if dedicated action towards 100% renewable energy is taken. A cost-optimisation model has been used to investigate energy transition pathways for the British Isles across the power, heat and transport sectors in hourly resolution. The results indicate that a 100% renewable energy system is economically more attractive than the governmental approach. Increasing the share of onshore wind and solar photovoltaics further reduces costs.image

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