Because it's false? Nothing is emissions-free: making solar panels and wind turbines create emissions, and since they are all made in China, just transporting them around the world where they are used cause emissions as well. And when they become garbage they are shipped once more around the world to be disposed (and not recycled). So it's only "emissions-free" if you ignore the whole supply chain.
> So it's only "emissions-free" if you ignore the whole supply chain.
Actually, burning natural gas does result in emissions of nearly all types of air pollutants and carbon dioxide (CO2).
About 117 pounds of CO2 are produced per million British thermal units (MMBtu) equivalent of natural gas compared with more than 200 pounds of CO2 per MMBtu of coal and more than 160 pounds per MMBtu of distillate fuel oil.
The article also specifically says that natural gas is not emissions-free: "The explosive growth of natural gas in the US has been a big environmental win, since it creates the least particulate pollution of all the fossil fuels, as well as the lowest carbon emissions per unit of electricity. But its use is going to need to start dropping soon if the US is to meet its climate goals, so it will be critical to see whether its growth flat lines over the next few years."
Well everything that burns fossil fuels also needs to be built, therefore also is part of the problem, the difference is they have ongoing emissions where as something like a wind turbine doesn’t.
This argument lacks substance. Are you suggesting the benefits of emissions-free operation are set-off, wholly or to a substantial degree, by the emissions produced in the manufacture of those products? The answer is clearly "no". There is a net benefit. That is all that is needed, and it's not a marginal benefit, it's significant.
I think this concern is often vastly exaggerated. Even with current "dirty" production and transport, renewables have orders of magnitude lower lifetime emissions than fossil fuels. And this will only get better once production and transport increasingly use renewable energy.
I don't understand the arguments that "solar panels and wind turbines use mined resources and are transported around the world". And coal, oil, and gas waft down into our arms from trees in the backyard?
The argument being made is that solar and wind aren't "emission free" .. that they don't waft into our neighbourhood from trees in our backyard.
Everybody (one would hope) understands that about coal, oil, and natural gas.
Many people (it seems) overlook that for wind, solar, and battery technology.
It's akin to ignoring | being wilfully ignorant of what happens to material in the recycle bin.
Think of it more as a plea to remember that all this clean energy comes with a boatload of waste that needs addressing, that is often in other people's backyards, and the you don't get $64 billion US worth of copper without the digging up of what some consider to be sacred ground.
What is the action this realization is supposed to help us come to though? Should we stop the transition to cleaner energy until we find a 100% clean energy source throughout its life cycle before we begin the transition? It is simple really. Wind, solar, and so on are cleaner than fossil fuel sources of energy, so we should gradually transition to them. Cleaner mining and responsible recycling and reuse of the infra we build can be worked on over time.
We are where we are because the 1970s kicked a can down the road rather than take action on C02 when it was clear there was a problem.
In another 50 years we will have a pile of toxic waste as a direct result of scaling solar and wind up from the sliver it is now to enough to replace fossil fuels in world electricty production and replace fossil fuels in transport and build out enough batteries to ride out at least 10 hours of global demand.
> Cleaner mining and responsible recycling and reuse of the infra we build can be worked on over time.
How's that going so far - I can point to a few examples of mine reclaimation .. these are dwarfed by the majority that are left as problems for later on.
It's simple really, high consumers should consume less and as resources are used there should be focus on remediation and harm reduction from the outset.
Typically the worst offenders greenwash the nasty away and tut-tut about waste piling up in third world | southernn economies.
Most wind turbines are made in China, because China is installing most wind turbines. Nobody ships 120m long blades around the world, it's hard enough to ship them within one country.
China produces about 80% of all solar panels in the world. Coindicentally or not, it is also the #1 country by coal production; it has the largest number of coal plants of any country (in absolute terms), and the government has recently been ramping up the rate of new coal plant construction after a few years of trying to keep it more or less in check. Most of electricity in China comes from coal (>60%, compared to US’s <20%).
Because it's false? Nothing is emissions-free: making solar panels and wind turbines create emissions, and since they are all made in China, just transporting them around the world where they are used cause emissions as well. And when they become garbage they are shipped once more around the world to be disposed (and not recycled). So it's only "emissions-free" if you ignore the whole supply chain.