Copenhagen Energy Islands (CEI) is a new independent company carved out of CIP, dedicated to early-stage development of energy islands globally. Copenhagen Energy Islands will focus on developing energy island projects from origination and initial concept development through early-stage development before divesting them to infrastructure funds for mid- to late-stage development and construction. Copenhagen Energy Islands is currently developing a portfolio of around 10 energy island projects around the North Sea, the Baltic Sea and South-East Asia.

Energy islands are large-scale offshore energy hubs, which will enable the massive scaling required for the next generation of offshore wind deployment globally. Energy islands combine existing, proven technologies in a new and innovative way and at a significantly larger scale, allowing for a cost-efficient build-out and integration of offshore wind.

Energy islands address three main challenges to the build-out of offshore wind:

• Enable significant cost savings

  Costs are reduced as there are significant scaling benefits e.g. building one energy island to host 10GW of offshore wind is cheaper compared to traditional high-voltage direct current converters on offshore platforms - simply because building each additional steel jacket is more expensive that each additional hectare on the island. On-island hydrogen production will also significantly lower transmission costs as hydrogen pipelines only cost ~20% of high-voltage direct current cables.

• Accelerate rate of deployment

  The build-out of offshore wind can be accelerated as the energy island relies on a local supply chain already existing for other offshore infrastructure such as harbours, bridges, and tunnels, and can therefore easily be mobilised and expanded, creating local jobs and activities. Establishing an island for hosting 10GW offshore wind is much faster than building offshore converter platforms.

• Reduce grid constraints

  Grid constraints can be reduced as on-island hydrogen production will increase the utilisation of power cables and significantly reduce the need for power grid build-out and reduce offshore wind curtailment. On-island hydrogen production enables harvesting most value from the wind resource by using wind power for on-island hydrogen production when power prices are low and for power export when power prices are high.

As the global energy mix shifts towards renewable power and hydrogen to achieve a net zero scenario by 2050, the global renewable electricity supply needs to increase around five times compared to 2022, according to the International Energy Agency. While governments and businesses are increasingly committed to decarbonisation targets, energy markets face extreme volatility driven by geopolitical tensions. Gas prices across Europe spiked in 2022 but have subsequently fallen. The volatility has highlighted the need for energy flexibility, security, and independence. This development leads to fundamental structural changes on the global energy system and increases the need for solutions that enables large-scale production, storage and flexibility.

Offshore wind will be a key technology to support the goal of net zero greenhouse gas emissions by 2050. Compared to onshore wind, offshore wind can be built at a larger scale, using materially larger turbines, which can help to reduce the cost of energy production. Additionally, wind speeds are typically stronger and more consistent at sea compared to land, resulting in higher electricity generation. Thirdly, land availability constraints are reduced compared to onshore technologies, particularly close to large load centres where real estate regulations and land costs create obstacles for developing renewables. 

Decarbonising power production and electrification can only deliver part of the solution towards reaching the net zero target by 2050. For the hard-to-abate sectors such as steel, petrochemicals, maritime transportation, aviation, etc., indirect electrification via Power-to-X will be key. With increasing capacities of intermittent renewables in the energy system, another challenge is balancing the production and consumption of electricity. Power-to-X can provide large-scale flexibility and balancing of the power grid, reduce grid reinforcements and lessen curtailment of renewable energy. Today, nearly all hydrogen production is based on fossil fuels such as coal (brown hydrogen) and natural gas (grey hydrogen). In the future, hydrogen production will be green, with global demand forecasted to be between 100-140 Mt in 2030 (BNEF and DNV GL).

Offshore wind is expected to play a key role in reaching the green hydrogen production targets. However, with offshore wind deployment increasingly moving further from shore, as near-shore sites become depleted, this creates challenges related to the transport of energy over longer distances to shore. Transporting energy over long distances (+100km) in the form of electricity requires HVDC transmission, which is costly. As an alternative, energy can be converted into hydrogen offshore and transported to shore via hydrogen pipelines. Hydrogen pipelines are significantly more cost-efficient compared to HVDC transmission, allowing for transportation of higher volumes of energy with lower losses. This enables a lower levelised cost of hydrogen (LCOH) compared to onshore hydrogen production from offshore wind.