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电力行业-学习笔记

  • 2026-04-13 19:24:19
电力行业-学习笔记
    想了解电力行业主要是因为长江电力,水电生意模式是不错的,长期来看技术的优势很难维持住,而资源是可以的,未来在AI时代,电力资源也是紧缺的,系统性的把行业了解一下。
电网公司
电网公司不负责发电,主要作用市输电、配电、售电,市电网运营商,类似于平台及物流。
    国内电网公司主要包括:
    1、国家电网,央企,总部北京,覆盖26个省、自治区、直辖市、内蒙古东部蒙东电网,供电人口超过11亿,下属省级电力公司27家;
    2、南方电网,央企,总部广州,覆盖广东、广西、云南、贵州、海南五省,供电人口约2.3亿,下属省级电力公司5家;
    3、内蒙古电力,蒙西电网,地方国企,总部呼和浩特,覆盖内蒙古西部6市,独立调度,部署于国网及南网;
    各电力公司下属电力交易中心包括北京和广州两个国家级电力交易中心和33家省级电力交易中心。
发电环节
  国内发电企业比较多,核心市5大6小共11家央企,另有一些地方国企、民企于外企。5大发电集团分别为:国家能源(全球最大火电)、中国华能集团、中国华电集团、中国大唐集团、国家电力投资集团。6小发电集团分别为:长江三峡集团(全球最大水电运营商)、中广核(国内最大核电)、中国核工业集团、国投电力、华润电力、中国节能环保集团。其他发电企业,地方能源国企:浙能电力、京能电力、内蒙华电、陕西能源等。民企及外资,隆基绿能,信义能源等(以新能源为主)。2024年5大发电集团合计发电4.37万亿千瓦时,占全国43.3%,6小发电集团合计发电1.55万亿千瓦时,占全国15.4%,原国企整体占比58.7%。
价格机制
2015年后,国内用户用电价格分为居民生活、农业生产及工商业用电3类,个别地区工商业又可以细分为大工业及一般工商业用电,居民生活和农业生产用电执行目录销售电价政策,最低档居民目录销售电价介于0.3771元/度(青海)和0.617元/度(上海)之间,农业生产电价按电压等级定价,低于当地居民目录销售电价。
     工商业用电已经取消了工商业目录销售电价,按照市场价格购电,工商业用户采用3种方式进入市场,1、与发电企业直接参与批发市场交易;2、售电公司开展零售市场交易;3、通过电网代理购电;
    用电价格是双轨并行,居民、农业用电政府定价,工商业市场定价。
发电结构
 2025年,全国总装机(最大发电能力)达到了38.9亿千瓦,其中新能源占据主要位置:
    1、太阳能发电(光伏),装机容量12亿千瓦,占比30.9%;
    2、风电,装机容量6.4亿千瓦,占比16.5%;
    3、水电,4.5亿千瓦,占比11.5%;
    4、煤电,12.6亿千瓦,占比32.4%;
    5、核电,0.6亿千瓦,占比1.6%;
     2025年,全国总发电量约为10.5万亿千瓦,各类占比分别为:
    1、煤电,发电量占比51.1%;
    2、水电,发电量占比15%;
    3、风电,发电量占比10%;
    4、太阳能,发电量占比8%;
    5、核电,发电量占比5%;
    发电量来看,风和光发电是间歇性的,煤电仍然占据一半以上的位置,水电占比第二。
    各类能源上网电价:
    1、煤电,全国均价区间为0.33-0.415元/度;
    2、风电,全国均价区间为0.21-0.415元/度;
    3、光伏,全国均价区间为0.15-0.415元/度;
    4、水电,全国均价区间为0.25-0.35元/度;
    5、核电,全国均价区间为0.34-0.38元/度;
海外市场
美国发电市场以火电、核电为主,气电发电量持续提升,煤电持续降低,气电占比43%、核电占比19%、煤电占比16%。
    欧洲电网包括大陆同步电网、北欧同步电网、波罗的海同步电网、英国电网和爱尔兰电网五个同步网络,通过直流联络线形成欧洲互联电网。
澳大利亚电力市场,有两个电力市场,澳大利亚国家电力市场、西澳大利亚电力市场。煤电发电量占比52.7%,与我国类似,新能源占比31.6%。
总结
我们富煤(占全球探明煤炭总储量的13.3%,全球排名第4,中国产量占全球50%以上,消费量占全球55%以上,美国储量排名第1,全球占比23.2%),贫油,少气,决定了煤炭依旧是重要的基础能源。
    水电的度电成本相对较低,大约在0.07到0.1元之间,煤电大约在0.3到0.4元,核电在0.4元左右,光伏在0.25到0.3元之间,风电在0.2到0.3元之间,水电的成本是最低的。
    水电燃料成本很低,水是免费原料,前期投入大,折旧为主,折旧期后,成本接近于零,大坝的寿命长,运维费用也低,优质的流域资源稀缺,天然垄断,供给端不会大幅扩张,壁垒高。
    后面主要把水电的龙头长江电力仔细了解一下,煤炭作为资源处于产能收缩的阶段,也值得一看。

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  1. CONNECT:[ UseTime:0.000509s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000800s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000311s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000286s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000608s ]
  6. SELECT * FROM `set` [ RunTime:0.000245s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000715s ]
  8. SELECT * FROM `article` WHERE `id` = 480578 LIMIT 1 [ RunTime:0.005103s ]
  9. UPDATE `article` SET `lasttime` = 1776083689 WHERE `id` = 480578 [ RunTime:0.002076s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000274s ]
  11. SELECT * FROM `article` WHERE `id` < 480578 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000505s ]
  12. SELECT * FROM `article` WHERE `id` > 480578 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000498s ]
  13. SELECT * FROM `article` WHERE `id` < 480578 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.007944s ]
  14. SELECT * FROM `article` WHERE `id` < 480578 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.007509s ]
  15. SELECT * FROM `article` WHERE `id` < 480578 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004708s ]
0.105924s