A Novel Multicriteria Evaluation of Small-Scale LNG Supply Alternatives: The Case of Greece

Abstract

Natural gas as fuel for electricity production has significant advantages, such as the reduction of environmental emissions and the lower operational cost. Due to the flexibility of gas engines, the exploitation of renewable energy sources in an area, can be maximized. The main objective of the present study is to investigate the possibility of LNG supply for sustainable electricity production in insular small-scale electricity systems. A novel multicriteria evaluation model has been developed, based on the methods of Additive Value Model, PROMETHEE and Simos approach. A set of coherent criteria has been selected, that fits perfectly with the demands of this type of problem. The proposed methodology has been implemented in four Greek islands (as they are the most indicative examples and with future perspectives to use natural gas for electricity production) and in one power plant in the mainland (as another typical example of small-scale electricity production). The evaluation process included four supply alternatives that cover the annual fuel demands of the examined regions. The obtaining ranking showed that the development of a network supplying individual small-scale terminals in a roundtrip is preferable, compared to the separate supply of each terminal.

Single-Solution-Based Vortex Search Strategy for Optimal Design of Offshore and Onshore Natural Gas Liquefaction Processes

“…The transportation of NG as LNG is preferred because of its lower cost and high safety compared with a pipeline (gaseous) transportation over long distances [8]. Due to this, the pipeline gas trade has been reduced by seven times than the LNG trade [9]. However, a primary issue with LNG processes is operating expenditure in terms of energy required to liquefy NG.…”

Greek Shipping Industry and Its Development

“…Specifically for Greece, the use of LNG in shipping would reduce dependence on oil, with beneficial effects on the national economy, as long as gas prices remain competitive. However, in order for Greece to exploit LNG, investments will be needed in the ports, in order to make gas available as fuel for those ships that will choose it in the future (Strantzali et al, 2018).…”

Integrated decision support methodology for energy planning in decentralized regions

“…A set of coherent criteria have been adopted, that fall within the economic, technical and environmental dimensions. (Strantzali et al, 2018).…”

“…and. The transport of liquefied natural gas (LNG) began in the 1960s, as a result of increasing energy demand in remoted regions (Strantzali et al, 2018). The transportation of gas by pipelines is preferred up to distances of about 2000 km.…”

“…Thus, LNG-powered land based (islanded) electricity generation plants are expected to dominate in medium to long-term due to the expecting rising of fuel prices, the tightening of legislation requirements concerning the efficiency and emissions of marine (ship) and land (power plants) applications and the discovery and extraction of new gas fields worldwide (Strantzali et al, 2018).…”