SWEET PATHFNDR: PATHways to an Efficient Future Energy System through Flexibility aND SectoR Coupling

The Swiss Federal Office of Energy (SFOE) launched the funding programme SWEET in 2020 to boost innovative approaches towards implementing Switzerland’s Energy Strategy 2050. Nexus-e is the central tool for one of the four selected consortia “PATHFNDR”. PATHFNDR focuses on improving renewable energy system efficiency through flexibility and sector coupling. As the central tool for the consortium, Nexus-e will provide the scenarios, considering technical, economic, and social constraints for the national scale and regional scale. In this project, Nexus-e will be extended to represent the entire Swiss energy system.

The role of bio-energy with carbon capture and storage to deliver net-zero emissions in Switzerland

Negative emission technologies will likely play a critical role in reaching the goal of net-zero carbon emissions. In this project, we will analyze the technical and environmental feasibility of carbon removal with Bio-Energy with Carbon Capture and Storage (BECCS), based on the availability of biomass, bioenergy potential, and of the infrastructure for CO2 capture and sequestration.

The role of flexibility providers in shaping the future energy system

As part of the development of the Nexus-​e platform, this first study sponsored by the Swiss Federal Office of Energy implements the Nexus-​e core modules to research the role of flexibility providers in shaping the future Swiss electricity system.

SCCER-FURIES: Modeling of the Swiss bulk energy system

The stability and reliability of the energy system are of critical importance for all aspects of modern life. These issues encompass the electrical infrastructure, but also other energy carriers like gas, heat and water. For the planning, operation and economic evaluation of the Swiss multi-energy system, Nexus-e provides a detailed representation of the Swiss transmission system as a basis for the bulk multi-​energy grid model.

CH2040: Systems analysis to support rapid complete Swiss decarbonization

We analyze the feasibility of the Swiss decarbonization by combining the detailed representation of the Swiss electricity market of Nexus-e with the pan-European, energy sector–wide perspective of Calliope, an energy system model developed by the Climate Policy group at ETH Zurich. The collaboration with Calliope will provide Nexus-e with new scenarios of electricity demand and energy system cost. Calliope in turn profits from Nexus-e’s feedback about what its assumptions about generation capacities mean for electricity markets and for the Swiss transmission grid.

Coupling with the City Energy Analyst: modeling high-resolution demand profiles for Switzerland

Addressing climate change and achieving the 1.5°C target requires a transition from a centralized, fossil-fuel-based towards a decentralized, renewable-based energy system. Long-term, large-scale energy systems models, such as Nexus-e, are useful in improving our understanding of such transitions and are seeing increased relevance in the face of stringent climate policy, energy security, and economic development concerns. However, they often lack appropriate spatiotemporal resolutions to capture the broad scope of economic and technical challenges. In this project, we collaborate with Prof. Arno Schlüter and the Singapore-ETH Center to tackle current energy system modeling limitations by coupling the City Energy Analyst tool with Nexus-e.