Hacker News Reader

Comment by peterjs | Hacker News Reader

Is it? Intel has been purchasing large quantities of green energy for years. In the last few year it has been 100% of the their overall consumption [1]. Is there any difference in what the two companies are trying to achieve?

[1] https://www.epa.gov/greenpower/green-power-partnership-natio...

View on HN

Google has better PR.

(I still think their goal and actions are admirable. There are many companies that have been jump started by a major customer pre-buying a product so the company can ramp up manufacturing to fulfill that and other orders. I much prefer this model over government-driven investment as I have more confidence this demonstrates true demand.)

Biomass is considered "green energy"? Why?!

Also that chart is US-only, while the story about Google here is that Google will go 100% renewable energy globally.

Depends on how the biomass is generated, but stuff that was just going to decompose anyway, like pig slurry, might as well be processed into a form that can be burnt for energy.

This is not my area of expertise but is burning something the same as letting it decompose naturally? Seems like burning could release different emissions than just the natural decomposition. How is it processed into a burnable form using 0 (renewable? clean?) energy?

One of the differences is that decomposing happens in the form of Methane, which is a potent greenhouse gas (21x as potent as CO2).

Capturing and burning the methane "downgrades" the potency of the emissions, now only emitting CO2.

Also not my area of expertise, but I think the idea behind the biomass == carbon neutral is that the carbon in those fuels was already in the atmosphere a few year ago, so you are not really tapping into the fosil fuels stored in the Earth's manttle. You can consider this a form of low-tech solar, since the biomass had to ultimatelly use photosyntesis to accumulate energy.

Also, if done sustainably, you have to keep sustaining life forms that keep doing the photosyntesis trick for you every year. i.e. All those carbon atoms in this year's crop of Christmas Trees were in the atmosphere a couple of years ago, and we are potentially breathing out at least part of the crops from the next few years... But if someone goes and cuts down a big chunk of the Amazonas in order to make "bio-fuels", yeah, that's dishonest, stupid and self defeating.

Reply on news.ycombinator.com