According to the data from the National Energy Control Center (CENCE), Costa Rica generated 99.35% of its electricity with renewable resources during the first half of 2017. This percentage is higher than any annual average from the last 30 years.
Between January 1st and June 30th, the National Electricity System (SEN) produced 5,575.61 gigawatts per hour with the five renewable sources of the national matrix: water (74.85%), geothermal energy (11.10%), Wind (11.92%), biomass (1.47%) and sun (0.01%). The thermal backup represented 0.65%.
At the end of the first half of 2017, Costa Rica accumulated 160 days with 100% renewable electricity and in the same period the SEN exported 93.5 gigawatts per hour to the Regional Electricity Market (MER).
Historically, the first half of the year - which includes the dry season, from January to April – had the highest thermal generation. It is projected that between July and December this percentage will remain stable.