Estonia has got a 15-year loan for finishing its back-up gas and liquid fuel power station.
The European Investment Bank is lending €32 million (£26m) to the transmission system operator, Elering.
Based in northern Estonia, Kiisa is the Baltic nation’s first emergency reserve power plant, previously it relied on back up generation from Latvia.
Building is well underway at Kiisa, which is meant to cover unexpected shortages of power within 10 minutes.
Elering’s CEO Taavi Veskimägi said: “It is hard to overestimate the role of the Kiisa emergency reserve power plant for Estonian consumers in the event of any kind of electricity system failure.”
He added the plant is the “last step” in making its underground cable to Finland, EstLink 2, available to the market without restrictions. Elering has already spent €56.7 million (£46m) on Kiisa.