Here’s what you need to know.
Green Hydrogen: This fuel is also touted as a cleaner alternative because it can be obtained from sources such as water rather than fossil fuels, and is produced with renewable energy. But the fuel is still in the development stage, and some experts say that using solar or wind power to produce yet another fuel is a waste of precious renewable energy. Green hydrogen is widely recognized as suitable for heavy industry and large vehicles such as aircraft and ships.
heat pump: becoming a popular choice. There are two main types – air source heat pumps, which remove heat from the air, and ground source heat pumps, which extract heat from the ground – and both essentially work like the reverse of a refrigerator.
“If the government wants a chance to catch up, it needs a proper strategy and enough cash to clean our homes in a big way. That means enough subsidies for heat pump installations, especially for the poorest households. For, the removal of VAT on green home technologies. and a phase out of gas boilers by the beginning of the next decade,” said Doug Parr, Policy Director, Greenpeace UK.
Ahead of the COP26 summit, the UK government is due to set out its plans to cut carbon emissions from households in a policy paper in the coming weeks.
Despite this increase, heat pumps still meet less than 5% of global heating needs in buildings, the IEA said.
Gas is getting expensive, but is it worsening the climate crisis?
While some countries, such as the UK, celebrate their phase out of coal, they are using more gas – but natural gas isn’t exactly a low-emission fuel either.
One issue affecting the urgency with which people view the need to move away from natural gas is as simple as it can be named.
“The findings suggest that climate communicators should describe natural gas, which is the main component of this energy source, using the terms “methane gas” or “methane,” the researchers concluded.
The IEA has stated that no new fossil fuel boilers should be sold globally from 2025 if the world is to achieve net-zero greenhouse gas emissions by 2050, where the amount of emissions does not exceed those removed from the atmosphere.
This would require a major change. As many countries distance themselves from coal – which is generally the largest emitter of all widely used fossil fuels – they continue to play a large role in the energy mix as a “bridging fuel” during the transition to renewable energy. switching to natural gas.
Why is it so hard to access these options?
People may not necessarily have that much power over the energy sources of their homes unless they are wealthy enough. It also depends on where you live – some countries have done more than others to help homes go off gas.
Plus, if you’re in a block of flats with as many people as there are people, you may have less than say.
The UK government has said it plans to ban gas boilers in new-built homes from 2025, with low-carbon heating systems replacing them. It also intends to stop the sale of new gas boilers from 2035.
But heat pumps remain expensive and their installation often requires extensive changes inside the property, said Katherine Ellsworth-Krebs, senior research associate in sustainability at the University of Lancaster, UK. As well as replacing their individual gas boilers, people may need to install larger radiators and underfloor heating to ensure that their homes are warm enough.
Ground source heat pumps require a place to either bury a pipe in a loop under the garden or dig a deep borehole. This is not always realistic in urban areas, where air source heat pumps – which look like air conditioning units – are a better option. “They don’t need as much space, but they’re not as efficient,” Ellsworth-Krebs told Granthshala.
That said, many of the country’s older, draftier homes also present a hindrance, as heat pumps produce a lower, continuous form of heating that works best with a tight building fabric.
The UK government has been accused of flip-flopping over its policies on solar panels and heat pumps, which have been waived and then withdrawn. Its flagship “Green Homes Grant” – which was supposed to help hundreds of thousands of homes improve their insulation and install low-carbon heating such as heat pumps – was scrapped in March after just six months.
“I think it shouldn’t be on you as a homeowner, or as a landlord, to have one of these big investments,” she said.
Granthshala’s Angela Dewan contributed to this report.
Credit : www.cnn.com