Through our Natural Catastrophe (NatCat) Resiliency Framework, we completed 24 targets for 11 Landslide Mitigation Projects, six Typhoonproofing Projects, two Cooling Tower Replacements, and five sites implemented with Forest Fire Control Measures. We ensured this level of safety and resiliency were observed in all our sites by following the NatCat framework supervised by the NatCat Site Technical Teams. In promoting timely and accurate information dissemination critical to our operations, we implemented SMS alert notifications. These equipped our teams with better weather forecasts and met, slope, and earthquake data. Through these initiatives, we enhanced our capacity to prevent prolonged outages and safety incidents due to natural catastrophes such as typhoons, landslides, earthquakes, and forest fires.
Our manufactured capital generated a total energy of 7,490 GWh. We further strengthened this through improved equipment reliability and availability, effective asset management practices, increased generation resulting from high and low-pressure steam segregation, and enhanced efficiency from regular monitoring and preventive maintenance. We also expanded our generated energy from reduced plant consumption of auxiliary steam (hybrid GRS) and the significant increase in ancillary service revenue resulting from control system upgrade compliant to AGC (Automatic Governor Control).
Further, our explorations and drilling of new wells provided us with additional steam capacity, while the upgraded cooling structures improved plant availability and enhanced our facilities’ typhoon resiliency.
Equipment upgrade and adoption of new technologies remain a priority in our geothermal resource, along with initiatives to add revenue and improve our efficiency in power generation. In our geothermal reservoirs, we optimized geothermal resources by developing new pads and Fluid Collection and Recycling System (FCRS) interconnection. We also conducted Technical Due Diligence in various local and international geothermal assets for possible acquisitions or joint venture opportunities.
EDC made significant progress on its binary plant projects, with both the 29MW Palayan Binary Power Plan (PBPP) and Mindanao 3 (M3) binary plant commencing site work in 2021. As evidence of our commitment to upholding rigorous safety standards across our sites, the Palayan plant recorded 1 million safe working hours. The Mindanao plant noted 500,000 safe working hours without a losttime incident as of December.
The 20MW Tanawon geothermal power plant was awarded a grant from the Joint Crediting Mechanism (JCM) of Japan amounting to JPY1.6 billion (PHP 640 million) in September 2021. Throughout the year, the Tanawon plant project underwent contract negotiations for contractors and gained conditional approval before finally being endorsed by Sorsogon City in December.
Lastly, the 36MW Mahanagdong geothermal brine optimization plant gained approvals from the Department of Environment and Natural Resources (DENR) and National Grid Corporation of the Philippines (NGCP) for its ECC and facility study. Its brine nomination has been confirmed at 500 kilograms per second.