4.1 MW biogas capacity added in 2024. ZERA annual report. 0.01%. 9.31. $13.33. 5. Energy Efficiency Improvements: Agriculture: 12% savings (2030 compared to baseline scenario); Commercial: 16% savings; Domestic: 22.08% savings; Manufacturing: 18.63% savings; Mining: 8% savings. ZERA energy efficiency audit. 2.72%. 2048. $633.91. 6.