Guided by the company’s Environmental & Social (E&S) Policy, ACEN is committed to protecting and conserving biodiversity throughout the lifecycle of its power plants. The Environmental and Social Management System (ESMS) serves as ACEN’s manual to implement the appropriate assessments, mitigation efforts, and management plans across the different stages of a power plant’s lifecycle.

Read more about ACEN’s E&S Policy

Biodiversity Protection

The forest patches inside our wind farms in Ilocos Norte serve as home to 117 species of birds, seven species of bats, seven species of snakes, and four species of rodents – one of which is the endemic Northern Luzon giant cloud rat. To properly monitor the ecological health of our area within Ilocos Norte, the Company has invested in studies to assess the baseline biodiversity indicators. ACEN continues to conserve the area through a comprehensive forest protection program. Furthermore, a state-of-the-art bioacoustics deterrence system was put in place to help prevent potential harm to wildlife in the operations of the wind farms.

In Batangas, the South Luzon Thermal Energy Corporation (SLTEC) inked an agreement with the DENR Region IV-A for the adoption of a 10-hectare mangrove plantation in Calatagan for enhancement and rehabilitation. SLTEC has committed to implementing effective management practices and the use of appropriate science-based strategic actions through the assistance of the University of the Philippines Los Baños College of Forestry and Natural Resources (CFNR). SLTEC will work with a local people’s organization to maintain a mangrove nursery to house an initial 10,000 mangrove saplings in preparation of tree planting activities in 2022.

ACEN’s marine turtle “Pawikan” Conservation Program along the coast of Bangui and Pagudpud in Ilocos Norte is conducted in partnership with the Marine Wildlife Watch of the Philippines (MWWP). The program aims to protect marine turtles in the region by providing technical guidance on pawikan conservation to five coastal barangays and local government organizations such as DENR – CENRO (Department of Environment and Natural Resources – Community Environment and Natural Resources Office), MENRO ( Municipal Environment and Natural Resources Office), PNP (Philippine National Police), BFP (Bureau of Fire Protection), the coast guard, Pagudpud Pawikan Conservation Group, and barangay officials. Since 2013, the collaboration of different stakeholders has resulted in 26 Pawikan nests recorded, 32 Pawikans rescued and released, and 1,465 Pawikan hatchlings released to the wild.

Meanwhile, ACEN’s Guimaras Wind in Visayas is spearheading the establishment of a fish sanctuary with the Local Government Unit of Dumangas through the placement of Artificial Reefs (ARs) to supplement the habitat of marine life in the area. The establishment of ARs is part of our strategy for resource enhancement and integration of a stronger sense of environmental awareness, accountability, and stewardship among coastal communities. ARs serve as barriers against active fishing gear to protect fish nurseries and act as refuge and feeding grounds of various aquatic organisms. ARs contribute not only to protecting marine biodiversity but also in creating jobs in the community through the promotion of eco-tourism, and supporting the maintenance of sustainable food sources.

Nature-Based Solutions

Since 2014, we have provided alternative sources of income to local communities. Our environmental program empowers locals through agro-forestry and reforestation, and the protection of biodiversity. As of 2021, we have established 1,275 hectares of forest protected and ~527,000 trees planted. This is equivalent to approximately 31,875 metric tons of carbon sink per year.*

ACEN aims to plant 1 million trees by 2025 in locations where we have a presence.


Hectares protected

~ 527,000

Trees planted


Species protected

*Based on internal carbon capture estimate of 25 MT per hectare per year.