The European Union has announced a raft of climate change proposals aimed at pushing it towards its goal of becoming carbon neutral by 2050.
A dozen draft proposals, which still need to be approved by the bloc's 27 member states and the EU parliament, were announced on Wednesday.
They include plans to tax jet fuel and effectively ban the sale of petrol and diesel powered cars within 20 years.
The proposals, however, could face years of negotiations.
The plans triggered serious infighting at the European Commission, the bloc's administrative arm, as the final tweaks were being made, sources told the AFP news agency.
"By acting now we can do things another way ... and choose a better, healthier and more prosperous way for the future," European Commission President Ursula von der Leyen said on Wednesday.
"It is our generational task... [to secure] the wellbeing of not only our generation, but of our children and grandchildren. Europe is ready to lead the way."
The measures are likely to push up household heating bills, as well as increase the cost of flights in the EU. Financial assistance will be available for people to install insulation and make other long-term changes to their homes.
"We're going to ask a lot of our citizens," EU climate policy chief Frans Timmermans said. "We're also going to ask a lot of our industries, but we do it for good cause. We do it to give humanity a fighting chance."
Opposition is also expected from some industry leaders, such as airlines and vehicle manufacturers, as well as from eastern member states that rely heavily on coal.
One EU diplomat told Reuters that the success of the package would rest on its ability to be realistic and socially fair, while also not destabilising the economy.
"The aim is to put the economy on a new level, not to stop it," they said.
The measures, billed as the EU's most ambitious plan yet to tackle climate change, have been named the Fit for 55 package because they would put the bloc on track to meet its 2030 goal of reducing emissions by 55 percent from 1990 levels.
By 2019, the EU had cut its emissions by 24 percent from 1990 levels.
Some of the key proposals include:
- Tighter emission limits for cars, which are expected to effectively end new petrol and diesel vehicle sales by 2035
- A tax on aviation fuel, and a 10-year tax holiday for low-carbon alternatives
- A so-called carbon border tariff, which would require manufacturers from outside the EU to pay more for importing materials like steel and concrete
- More ambitious targets for expanding renewable energy around the bloc
- A requirement for countries to more quickly renovate buildings that are not deemed energy efficient
Corporate lobby BusinessEurope denounced the plan, saying it "risks destabilising the investment outlook" for sectors such as steel, cement, aluminium, fertilisers and electric power "enormously".
International Air Transport Association director general Willie Walsh said: "Aviation is committed to decarbonisation as a global industry. We don't need persuading, or punitive measures like taxes to motivate change."
At the same time, environmentalist campaigners have said the proposals don't go far enough.
"Celebrating these policies is like a high-jumper claiming a medal for running under the bar," Greenpeace EU director Jorgo Riss said in a statement.
"This whole package is based on a target that is too low, doesn't stand up to science, and won't stop the destruction of our planet's life-support systems."
Climate campaigner Greta Thunberg said that unless the EU "tears up" its proposals, "the world will not stand a chance of staying below 1.5C of global heating".
media captionWhat is climate change?
In September the EU Commission set out its blueprint for reaching the 55 percent reduction by 2030, and said at least 30 percent of the EU's €1.8tn (£1.64tn; $2.2tn) long-term budget would be spent on climate-related measures.
The targets are part of a global effort to tackle climate change by cutting atmospheric pollution, especially carbon dioxide (CO2) emissions.
The Paris climate deal, signed in 2016, aims to keep global temperature rise well under 2C, and preferably within a maximum rise of 1.5C, to prevent the worst effects of climate change.