energiaalueen
Energia-alueen is the genitive form of energia-alue, a Finnish term used to refer to the energy sector or energy domain. The base compound energia-alue combines energia (energy) and alue (area, region) and is commonly hyphenated to form a single noun in technical and policy language. The genitive energia-alueen is used to indicate possession or description, for example energia-alueen kehittäminen (development of the energy sector) or energia-alueen sääntely (regulation of the energy sector).
It is a generic, non-official designation rather than a specific geographic region. The term appears in policy
Grammatical notes: energia-alueen functions as the genitive of energia-alue and can combine with adjectives or nouns
See also: energiapolitiikka, energiamarkkinat, Energiavirasto (Finnish Energy Authority), energia-alan kehittäminen.