SOURCE

const list = [
    {
        "name": "投资大厦21F动力照明001-正向有功电能",
        "dateTime": "2023-12-31 00:00:00",
        "totalEnergy": "0.00",
        "totalExpenses": "0.00",
        "timeList": [
            {
                "time": "00:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "01:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "02:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "03:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "04:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "05:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "06:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "07:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "08:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "09:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "10:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "11:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "12:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "13:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "14:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "15:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "16:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "17:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "18:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "19:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "20:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "21:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "22:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            },
            {
                "time": "23:00:00",
                "energy": "0.00",
                "expenses": "0.00"
            }
        ]
    },
    {
        "name": "投资大厦21F动力照明001-正向有功电能",
        "dateTime": "2024-12-31 00:00:00",
        "totalEnergy": "4598.00",
        "totalExpenses": "7031.20",
        "timeList": [
            {
                "time": "00:00:00",
                "energy": "65.60",
                "expenses": "65.60"
            },
            {
                "time": "01:00:00",
                "energy": "64.40",
                "expenses": "64.40"
            },
            {
                "time": "02:00:00",
                "energy": "68.80",
                "expenses": "68.80"
            },
            {
                "time": "03:00:00",
                "energy": "64.80",
                "expenses": "64.80"
            },
            {
                "time": "04:00:00",
                "energy": "62.00",
                "expenses": "62.00"
            },
            {
                "time": "05:00:00",
                "energy": "63.60",
                "expenses": "63.60"
            },
            {
                "time": "06:00:00",
                "energy": "66.00",
                "expenses": "66.00"
            },
            {
                "time": "07:00:00",
                "energy": "81.20",
                "expenses": "81.20"
            },
            {
                "time": "08:00:00",
                "energy": "186.80",
                "expenses": "186.80"
            },
            {
                "time": "09:00:00",
                "energy": "395.60",
                "expenses": "791.20"
            },
            {
                "time": "10:00:00",
                "energy": "408.80",
                "expenses": "817.60"
            },
            {
                "time": "11:00:00",
                "energy": "394.00",
                "expenses": "788.00"
            },
            {
                "time": "12:00:00",
                "energy": "210.00",
                "expenses": "210.00"
            },
            {
                "time": "13:00:00",
                "energy": "173.60",
                "expenses": "173.60"
            },
            {
                "time": "14:00:00",
                "energy": "372.40",
                "expenses": "372.40"
            },
            {
                "time": "15:00:00",
                "energy": "363.60",
                "expenses": "363.60"
            },
            {
                "time": "16:00:00",
                "energy": "378.80",
                "expenses": "757.60"
            },
            {
                "time": "17:00:00",
                "energy": "374.80",
                "expenses": "749.60"
            },
            {
                "time": "18:00:00",
                "energy": "273.60",
                "expenses": "547.20"
            },
            {
                "time": "19:00:00",
                "energy": "174.00",
                "expenses": "174.00"
            },
            {
                "time": "20:00:00",
                "energy": "117.60",
                "expenses": "235.20"
            },
            {
                "time": "21:00:00",
                "energy": "90.00",
                "expenses": "180.00"
            },
            {
                "time": "22:00:00",
                "energy": "76.40",
                "expenses": "76.40"
            },
            {
                "time": "23:00:00",
                "energy": "71.60",
                "expenses": "71.60"
            }
        ]
    },
]

const consum = list.reduce((acc, cur) => {
    // 累加 totalEnergy 和 totalExpenses
    acc.totalEnergy += parseFloat(cur.totalEnergy);
    acc.totalExpenses += parseFloat(cur.totalExpenses);

    // 初始化 timeList，如果 acc.timeList 为空
    if (acc.timeList.length === 0) {
        for (let timeItem of cur.timeList) {
            acc.timeList.push({
                time: timeItem.time,
                energy: parseFloat(timeItem.energy),
                expenses: parseFloat(timeItem.expenses)
            });
        }
    } else {
        // 确保 acc.timeList 和 cur.timeList 长度相同
        for (let i = 0; i < Math.min(acc.timeList.length, cur.timeList.length); i++) {
            acc.timeList[i].energy += parseFloat(cur.timeList[i].energy);
            acc.timeList[i].expenses += parseFloat(cur.timeList[i].expenses);
        }
    }

    return acc;
}, { 
    name: "总量",
    dateTime: null,
    totalEnergy: 0, 
    totalExpenses: 0,
    timeList: []
});

list.unshift(consum)

console.log(list)