Mangrove Cultivation Method in Rembang Powerplant as an ABCDE Solution

Abstract

PT PLN Nusantara UP Rembang is a powerplant produces Greenhouse Gas (GHG) emissions, seeking to increase the amount of CO2 absorbtion by increasing the Open Green Space Area. GeHa Apung (Green House Float) is an anti-failure method of mangrove cultivation that is specifically made in the sea by utilizing the tides of seawater so that water needs are met and seeds are more adaptive. The roof of GeHa Apung uses a top cover that is placed in the middle zone because the paranet regulates the level of sunlight so as to reduce pest attacks and protect the seedlings from garbage. The GeHa Apung foundation uses rigid and hollow tetrapod by utilizing fly ash and bottom ash waste. The frame uses wood and bamboo waste so that it is safe from waves. With the innovation of GeHa apung, the planting success rate produced is 60-80%. GeHa Apung has succeeded in cultivating mangrove seedlings with a planting success rate of 77.9%, reducing the level of coastal abrasion at the Rembang coal-fired power plant by 1 cm from 2022 to 2023, increasing the biodiversity index (H’) from 1,66 (in 2022) to 1.68 (in 2023), mangrove carbon stock/blue carbon by 2,308. 31 ton of CO2, mangrove growth rate of about 7 cm within 5 years can be known to have carbon absorption in 2033 of 2.66% of total coal-fired power plant emissions Rembang in 2023, increasing green Open Space Area in the Rembang PLTU Area through mangrove afforestation by 1.1%, successfully absorbing CO2 of 623.44 tons of CO2 or 0.015% of the GHG emissions generation of PLTU Rembang in 2023 and supporting the acquisition of Gold PROPER points for PT PLN Nusantara Power UP Rembang in terms of biodiversity by 1.54% and contribution to NZE Moonshot or Growth Moonshot.