According to the gateway, the savings are making a major impact on the airport’s cost base, and will grow further as it moves into the most productive months of the year.
The solar farm is located a third of a mile from the airport’s terminal building and is believed to be the largest solar energy connection to an airport in the UK and Ireland.
The airport reveals that the solar farm is generating over one quarter of its annual electricity needs.
And, at certain peak generation times, the airport has run on solar electricity alone for almost nine hours.
Crookedstone Solar Farm cost in the region of £5m to build, with significant local input in the construction of the project.
The entire project was funded, installed and operated by Lightsource, with Belfast International Airport buying the clean electricity produced by the solar farm through a 25-year Power Purchase Agreement (PPA).
In addition to the money that Belfast International Airport has saved from choosing to procure solar power, the development is also improving the airports environmental performance.
It is estimated that the energy from the new solar farm has saved 2,100 tonnes of carbon emissions each year – equivalent to taking 469 cars off the road. This ‘win – win’ for the Airport has pleased airport chiefs.
Belfast International Airport's operations director, Alan Whiteside, says: "The solar farm project has exceeded all expectations.
"From switch-on in March to the end of the year, the 'ballpark' savings were over £100,000.
"The project has won critical acclaim, and a few prestigious awards, namely the Sustainable Ireland award won by Lightsource and the Airport Operators Association ‘Best Environmental Initiative” award.
"The project is consistently delivering a reliable 'green' and cost-saving energy supply for the airport. No other airport in either the rest of the UK or Ireland has a similar energy source and we're delighted with its operation."
Welcoming the news, Nick Boyle, CEO of Lightsource, says: “We are really thrilled that Belfast International Airport are being rewarded for the vision that they showed in switching to solar energy with Lightsource. We worked hand in hand with the team at Belfast to deliver a project which would meet their needs.
"Not only has this project significantly reduced their emissions, it has significantly improved their bottom line. That’s the benefit that a Lightsource Private Wire agreement can deliver for a business.”