Biomethane (RNG) is also becoming a reality in Puerto Rico thanks to the Humacao project, the first biomethane/RNG plant in the Caribbean, capable of producing 450,000 MMBtu annually from local waste. This energy source could represent a strategic opportunity for cogeneration (CHP) plants, currently powered by liquefied natural gas, that could reduce emissions by adopting the renewable alternative. However, the high cost of biomethane/RNG and the non-transferability of the 25% tax credits for the use of renewable energy hinder the spread of the technology. A regulatory intervention could be crucial to promoting the island’s energy transition.