Donald Trump's plan to bring back coal appeared to take a hit when a Texan power plant revealed it was making around 70 workers redundant because the fossil fuel not making money.

The US President said he had "ended the war on coal" last month as he vowed to dismantle "job-killing" Environmental Protection Agency regulations and put miners back to work.

He has outlined plans to shift the US away from renewable energy through proposed budget cuts after controversially withdrawing from the landmark Paris agreement on climate change on 1 June.

Trump declares an end to 'war on coal'

But the price of coal remains so high that the Texas Municipal Power Agency (TMPA) said it will have to lay off around 70 workers from a coal-fired electrical plant at Gibbons Creek, Anderson, during the winter months.

The agency claimed it was not economical to keep the facility running all year round and said it would only keep it fully operational between June and September, according to KBTX-TV.

Around 20 people will reportedly stay to maintain safety standards throughout the rest of the year.

The TMPA has been trying to sell the power plant for more than a year and will have to decide whether to shut it down completely if a buyer is not found by September 2018.

The news will come as a blow for Mr Trump, who declared that “the golden era of American energy is now underway” at an event called Unleashing American Energy last month.

The President told energy executives and labour union leaders: “You've gone through eight years of hell.

“We are putting the coal miners back to work just like I promised.

Donald Trump's international Presidential trips Show all 22 1 /22 Donald Trump's international Presidential trips Donald Trump's international Presidential trips French President Emmanuel Macron and US President Donald Trump AFP/Getty Images Donald Trump's international Presidential trips French President Emmanuel Macron and US President Donald Trump talk as they leave the Army Museum at Les Invalides in Paris AFP/Getty Images Donald Trump's international Presidential trips German Chancellor Angela Merkel and US President Donald Trump arrive for the group photo at the G7 Taormina summit on the island of Sicily in May 2017 Getty Images Donald Trump's international Presidential trips Mr Trump was pressed on the subject at the G7 summit in Italy Getty Donald Trump's international Presidential trips US President Donald Trump gives a speeech at the Warsaw Uprising Monument on Krasinski Square Getty Donald Trump's international Presidential trips US President Donald Trump and Britain's Prime Minister Theresa May during a ceremony at the NATO headquarters before the start of a summit in Brussels, Belgium Reuters Donald Trump's international Presidential trips Montenegro's Prime Minister Dusko Markovic is seen to the right of Donald Trump at a Nato summit in Brussels REUTERS Donald Trump's international Presidential trips Pope Francis meeting with US President Donald J. Trump EPA Donald Trump's international Presidential trips Pope Francis poses with US President Donald Trump and First Lady Melania Trump AFP/Getty Images Donald Trump's international Presidential trips US President Donald Trump arrives at Palazzo del Quirinale ahead of the meeting with Italian President Sergio Mattarella Ufficio Stampa Presidenza della via Getty Donald Trump's international Presidential trips US President Donald Trump is seen during a joint press conference with the Palestinian leader at the presidential palace in the West Bank city of Bethlehem AFP/Getty Images Donald Trump's international Presidential trips Palestinian president Mahmoud Abbas meets US President Donald Trump PPO via Getty Donald Trump's international Presidential trips Israeli Prime Minister Benjamin Netanyahu speaks with US President Donald Trump prior to the President's departure GPO via Getty Images Donald Trump's international Presidential trips US President Donald Trump and Israel's Prime Minister Benjamin Netanyahu shake hands after delivering a speech at the Israel Museum AFP/Getty Images Donald Trump's international Presidential trips US President Donald Trump and First Lady Melania Trump lay a wreath in the Hall of Remembrance as White House senior advisor Jared Kushner and Ivanka Trump watch on during a visit to the Yad Vashem Holocaust Memorial museum AFP/Getty Images Donald Trump's international Presidential trips US President Donald Trump visit to Yad Vashem Holocaust museum in Jerusalem accompanied by Prime Minister Benjamin Netanyahu GPO via Getty Images Donald Trump's international Presidential trips US President Donald Trump takes his seat before his speech to the Arab Islamic American Summit in Riyadh in Saudi Arabia Reuters Donald Trump's international Presidential trips Saudi Arabia's King Salman bin Abdulaziz al-Saud, US President Donald Trump and US First Lady Melania Trump look at a display of Saudi modern art at the Saudi Royal Court in Riyadh AFP/Getty Images Donald Trump's international Presidential trips US President Donald Trump and Saudi Arabia's King Salman bin Abdulaziz al-Saud take part in a signing ceremony at the Saudi Royal Court in Riyadh AFP/Getty Images Donald Trump's international Presidential trips King Salman presents Donald Trump with The Collar of Abdulaziz al-Saud Medal at the Royal Court Palace on 20 May AP Donald Trump's international Presidential trips US President Donald Trump is welcomed by Saudi King Salman bin Abdulaziz al-Saud upon arrival at King Khalid International Airport in Riyadh AFP/Getty Images Donald Trump's international Presidential trips U.S. President Donald Trump and first lady Melania Trump walk on the South Lawn prior to their first foreign trip Getty Images

“We are ending the intrusive [Environmental Protection Agency] regulations that raise the price of energy so substantially.”

A global oversupply of oil has actually kept prices of the commodity down in recent years, and the Trump administration’s push for gas exports is likely to continue facing a market glut.

He has already approved the sale of more American natural gas to South Korea as well as the construction of a new petroleum pipeline to Mexico.

“That'll go right under the wall,” Mr Trump joked, referring to the 74-mile long wall he hopes to build along the US-Mexico border.

Mr Trump also intends to approve two applications to export natural gas from the Lake Charles liquefied natural gas terminal in Louisiana and open up a new offshore oil and gas leasing programme.

He said: “We have so much more [energy] than we ever thought possible...We don't want to let other countries take away our sovereignty and tell us what to do...We will be dominant. We will export American energy all around the globe...Job-killing regulations are being removed...like you've never seen before.”

Mr Trump said the Paris Accord had hurt the coal industry and claimed it would prove “too costly” for the country to stick to the agreement to reduce greenhouse gas emissions.

Thirteen states and more than two hundred city mayors have pledged to abide by the Paris goals, despite the President's decision to withdraw from the agreement.