Pubblicato in: Cina, Devoluzione socialismo, Energie Alternative

Cina. Energie alternative solo se più economiche. Fine delle sovvenzioni.

Giuseppe Sandro Mela.

2019-01-16.

cina

L’annuncio dato dalla Cina è sobrio, esaustivo e sembrerebbe essere con i piedi bene sulla terra.

China: No Wind Or Solar If It Can’t Beat Coal On Price

«China has said it will not approve wind and solar power projects unless they can compete with coal power prices.

Beijing pulled the plug on support for large solar projects, which had been receiving a per kWh payment, in late May. That news came immediately after the country’s largest solar industry event and caught everyone by surprise.

Officials are understood to have been frustrated at seeing Chinese suppliers and engineering firms building solar projects overseas that delivered electricity at prices far below what was available back home.

The country also has its own issues with grid logjams. These have caused power from wind and solar projects to be wasted due to a lack of capacity on the network to transmit and distribute it. In 2017 12% of wind generation and 6% of solar was curtailed.

In the plans announced on Thursday, the National Development and Reform Commission (NDRC), the top strategic planning authority, and the National Energy Administration (NEA) set out a series of conditions under which new solar and wind projects would be approved from now till the end of 2020.

Chief among these is that the price matches or undercuts the national coal benchmark, something that happened for the first time ever just last month.

Projects will also have to show that the grid can handle their output. Technical specifications will ensure that the highest standards are met on that front.

Local governments have been told they are free to offer their own subsidies to projects if they wish.

In the past, provincial authorities have spent heavily to bankroll uncompetitive solar manufacturers. Thursday’s announcement warned that any attempt to use project subsidies to invest in “local factories” or to make the use of locally made components a condition of the subsidy.

Also included in the wide-ranging changes is the introduction of a green certificate scheme. A small trial of such a scheme was undertaken in 2017. It would work in a similar way to renewable energy certificates schemes in the U.S. and elsewhere. A certificate is created for each unit of electricity generated. These are then traded among utilities who may have targets to meet as determined by regulators or purchased by an end user to demonstrate their use of “clean” power. Details on the mechanics of the certificate scheme have not yet been released.»

Riassumiamo.

«China has said it will not approve wind and solar power projects unless they can compete with coal power prices»

*

«Beijing pulled the plug on support for large solar projects»

*

«The country also has its own issues with grid logjams. These have caused power from wind and solar projects to be wasted due to a lack of capacity on the network to transmit and distribute it. In 2017 12% of wind generation and 6% of solar was curtailed.»

*

«Projects will also have to show that the grid can handle their output»

*

«Projects will also have to show that the grid can handle their output. Technical specifications will ensure that the highest standards are met on that front.»

* * * * * * * *

Se è vero che la corrente elettrica è prodotta nelle centrali, sarebbe altrettanto vero ricordare come da queste debba essere portata ai consumatori tramite gli elettrodotti, che dissipano energia.

Il costo deve essere contabilizzato su quanto alla fine arriva al consumatore.

Non solo, ma si deve anche tener conto del costo di impianto, di manutenzione e di rinnovo.

In linea generale, più le centrali sono piccole e sparpagliate e minore è la necessità di disporre di reti a lunga percorrenza: maggiore la lunghezza dell’elettrodotto, maggiore la dispersione

Della corrente eolica prodotta sul Baltico ne arriva in Baviera, luogo di consumo industriale, appena il 50%. Questo vuol dire raddoppiare i costi per kwh.

Infine, e cosa non da poco, l’eolico produce corrente solo quando tira vento ed il solare solo quando c’è il sole.

Queste centrali entrano in produzione a capriccio meteorologico, non dietro esplicita richiesta dei consumatori.

Per ultimo ma non certo per ultimo, quando queste centrali alternative entrano in funzione immettono grandi quantità di energia nel grid, che se ne va regolarmente in sovraccarico.

* * * * * * * *

L’arte di saper fare di conto non è poi impresa impossibile.


Climate Dispatch. 2019-01-12. China: No More Wind Or Solar If It Can’t Beat Coal On Price

China has said it will not approve wind and solar power projects unless they can compete with coal power prices. Beijing pulled the plug on support for large solar projects, which had been receiving a per kWh payment, in late May. That news came immediately after the country’s largest solar industry event and caught everyone by surprise. –John Parnell, Forbes, 10 January 2018

Shares in China’s new energy vehicle (NEV) makers and other firms in the industry chain are pummelled, after media reports that Beijing this year could continue to cut subsidies for NEVs. —The Economic Times, 9 January 2019

Saudi Arabia is nearing a deal to invest in U.S. liquefied natural gas, a landmark decision for the kingdom, which in the past had been a huge supplier of energy to America. America’s shale revolution has broken years of dependence on Middle Eastern oil, to the extent that the International Energy Agency expects the U.S. to become a net energy exporter by 2023. —The Wall Street Journal, 9 January 2019

China National Petroleum Company (CNPC) reported that shale gas production from its Sichuan Basin project increased by 40% between 2017 and 2018. Total gas output was pegged at 4.27 billion cubic meters (bcm), with a daily output amounting to 20 million cubic meters (mcm). The figures are record highs, the company said. —JPT Digital, 10 January 2019

Support in German Chancellor Angela Merkel’s coalition for a major new Russian gas pipeline is slipping as frustration with the Kremlin’s brinkmanship grows and pressure from U.S. President Donald Trump starts to bite. —Bloomberg, 7 January 2019

BP discovers 1 billion barrels of oil at its Thunder Horse field in the Gulf of Mexico. The oil giant also says it will spend $1.3 billion to develop the third phase of its Atlantis offshore field south of New Orleans. BP credits its investment in advanced seismic technology for speeding up its ability to confirm the discoveries. —CNBC, 8 January 2019

Annunci