Fast track solutions for gas and power supply in the small & mid-scale sectors

Rodrigo Moreno's picture
Rodrigo Moreno, Corporate Business Development, ACS Industrial Services
Comments: 0

The LNG market is growing worldwide, with a special focus on gas-to-power projects. Planned new power plants and existing ones, aiming to switch to a cleaner fuel such as LNG, are striving to reach a final investment decision (FID).

In many cases the projects are located in islands, archipelagic countries, emerging countries, or in general are intended to supply the demand of new consumers willing to purchase relatively reduced amounts of LNG.

However current solutions for the supply of LNG have been developed for larger consumers. It is the case of the standard FSRUs, with LNG storage and regasification capacities from around 145,000m3 and 300mmscfd respectively. The cost and time-to-market of these solutions represent a major obstacle when it comes to reaching FID in a small or mid-scale project. Mainly in those projects where the time to first gas is vital and also when the price of the gas delivered to the consumers competes with alternative sources of power generation.

ACS Industrial is developing in-house technology, consisting of small/mid-scale offshore concrete import terminals for the storage and regasification of LNG. The floating terminals can be deployed in different configurations (floating or as gravity based solutions, GBS) depending on the specific conditions of each project, and can be relocated if necessary.  The key drivers of the solution proposed are:

  • Concrete as main material reducing CAPEX and OPEX due to the durability of the concrete in marine environments VS steel
  • Modular construction and design, and simplified geometry to improve the time-to-market
  • Flexible solution that can be relocated. Even the terminals deployed in GBS configuration can be relocated by de-ballasting of the terminal and towing
  • Ballast system: permanent and / or removable ballast, which allows for modifying the operation draft according to the met-ocean conditions at any time, for reducing the draft if necessary when entering/leaving the construction port, for relocating the terminals and for modifying the total deadweight in case extreme weather events are foreseen (e.g: hurricanes or typhoons)
  • De-risking the construction phase by teaming up with top-tier design, technological and construction partners

The operation configuration is chosen mainly according to the met-ocean conditions and water depth of the site. The designs carried out include different LNG storage solutions and regasification technologies. The values per module allow for reaching storage and regasification capacities of up to 25.000m3 and 100mmscfd respectively. According to the specific requirements of each project, the previous capacities can be down-scaled or even up-scaled, by adding additional modules.

In conclusion, offshore solutions defined by modular, cost-effective and shortened delivery time parameters would be very much beneficial for the gas and energy markets and would facilitate that new projects come to happen especially in the small and mid-scale sectors.
On top of the previous storage and regasification facilities, current designs allow for including power generation facilities on deck, reaching a plug-and-play concept where the imported LNG is converted into electricity to be exported to the grid. The current designs include different alternatives with gas turbines and engines, with installed capacities that can reach up to 100MW per module.

If you would like to hear more on global floating LNG developments, be sure to register to attend the 2018 Gastech Exhibition and Conference and gain exclusive market insights by market experts. 

Image courtesy of Flickr