| 1977 |
November 1977 - RURAL ELECTRIFICATION PROGRAM STARTED WHEN NEA'S SENIOR COOPERATIVE DEVELOPMENT OFFICER PEDRO H. FRONDA CAME TO TABLAS AND ORGANIZED THE DISTRICT ELECTRIFICATION COMMITTEE (DECOM) IN THE NINE MUNICIPALITIES COVERING TABLAS ISLAND. |
| 1978 |
January 28, 1978 - Romblon Electric Cooperative was the first name of the electric cooperative but was later change to Tablas Island Electric Cooperative, Inc. (TIELCO). The articles of Incorporation was acknowledge and notarized |
| 1978 |
February 6, 1978 - It was registered with NEA |
| 1979 |
July 31, 1979 - A televised signing of loan agreement between TIELCO and NEA was held in Manila with the presence of National and Provincial officials |
| 1982 |
September 1982 - NEA designated TIELCO's first acting General Manager in the person of Engr. Edgar Agliam |
| 1982 |
November 1982 - TIELCO opened its first headquarters at Odiongan, Romblon |
| 1983 |
September 11, 1983 - the Municipality of Odiongan was energized and after a month the Municipality of San Andres was lighted |
| 1984 |
May 10, 1984 - The Municipality of Calatrava was energized |
| 1984 |
September 7, 1984 - the first Annual Membership Meeting was held at Romblon State College |
| 1984 |
December 1984 - The municipality of Alcantara, San Agustin and Sta. Maria were lighted on |
| 1985 |
March 19, July 6, and December 8, 1985 - On the same year, TIELCO extended its operating time from 7.5 hours to 12 hours. |
| 1986 |
January 16, 1986 - the 9 Municipality of Tablas Island was energized. by the end of 1986, a total of 67 barangays were energized with 2,823 energized households. |
