Nova Scotia Power says 30 per cent of the electricity it produced in 2018 came from renewable sources such as wind power.
The utility says 18 per cent came from wind turbines, nine per cent from hydroelectric and tidal turbines and three per cent by burning biomass.
However, over half of the province's electrical generation still comes from the burning of coal or petroleum coke. Another 13 per cent come from burning natural gas and five per cent from imports.
The utility says that since 2007, the province's reliance on coal-fired plants has dropped from 76 per cent of electricity generated to 52 per cent last year.
It says it expects to meet the province's legislated renewable target of 40 per cent in 2020, when it begins accessing hydroelectricity from the Muskrat Falls project in Labrador.
"We have made greener, cleaner energy a priority," utility president and CEO Karen Hutt said in a news release.
"As we continue to achieve new records in renewable electricity, we remain focused on ensuring electricity prices stay predictable and affordable for our customers."
Nova Scotia Power also projects achieving a 58 per cent reduction in carbon emissions from 2005 levels by 2030.