Energy Topics

Energy Topics

Sector Coupling & Hydrogen

Hydrogen is the new focus topic for EEHH since 2021. Please find detailed information about projects, partners and events on our microsite

To broaden the use of renewable energies beyond the electricity sector to likewise encompass the mobility sector, thermal sector as well as the industry sector, the “coupling” of each and every sector is a must. In the electricity sector about 50 per cent of energy is currently generated from renewable resources, in transport just 5 per cent and in thermal energy sector 15 per cent. The substantial share of renewables in the electricity sector underlines the unlocked potential for improvements in the other sectors and for sector coupling.

Solutions for the Energy Transition as a Whole

To achieve a complete energy transition across all three sectors, various approaches are being pursued. Numerous pilot projects are currently under way, designed to prove the effectiveness of sector coupling and its technical regulation. Furthermore, legislation and regulatory frameworks play central roles for sector coupling projects, since their economic viability is highly limited by fees and charges for grid utilisation. At the same time, poor charges on carbon emissions most often lead to considerably cheaper costs for fossil-fuelled heating or transportation, when compared to a supply with renewable electricity.

Storage Technologies for Surplus Electricity

Modern storage technologies can help improve the use of energy produced from renewable resources. These include “Power-to-Gas”, the generation of gaseous energy carriers such as hydrogen and methane from renewable electricity through electrolysis. “Power-To-Heat” is another important direction, the use of excess quantities of electricity in the thermal energy market through the use of controllable heating elements in local thermal storage systems and grids. “Combined Heat and Power” is another approach, coupling the generation of electricity and heat, e.g. in cogeneration plants.

Lighthouse projects

The Northern German Living Lab tests the holistic transformation of the energy system in all sectors and develops the path to reach climate neutrality and decarbonization of the model region. In an overall systemic approach sector coupling with hydrogen and energy-/heat optimized districts are being tested. In 25 projects with 22 demonstration plants, including 8 electrolyzers with a hydrogen production capacity of 42 MW, as well as facilities for 700 GWh of waste heat utilisation per year will result in the decarbonization of over 350 - 500 thousand tons of CO2 / year.

53 partners (including 23 funding partners) of economy, science and politics want to create sustainable innovations, trigger economic impulses and strengthen Northern Germany as an industrial location.

Sibyl Scharrer

The Hydrogen economy in the Hamburg metropolitan area needs great international cooperation to unfold its full potential and I am excited to be able to contribute directly to this. Responsible for international networking in the field of hydrogen, I support companies and other organisations in establishing and expanding cooperation with partners abroad through individual assistance, trade fairs and events as well as company missions – to Hamburg and from Hamburg into the world.

Phone: +49 (0)40 69 45 73 – 29, email: