[Micele]

Oorspronkelijk geplaatst door Aurora_Borealis

Die 200 kg CO2 uitstoot per kWh productie is inderdaad de bovengrens van de analyse, 50 kg CO2 per kWh is ergens de ondergrens....maar veel hangt af van kathode samenstelling... NMC (wat Tesla/Panasonic gebruikt) is een van de meer CO2 intensieve processen...

Maar de productielijn batterijen en... (volledige aandrijflijn) in Gigafactory gaat wel in afzienbare tijd zoveel mogelijk op groene stroom gebeuren. Dus van grondstoffen tot afgewerkt accupack. E-motoren enz... maken ze ook daar, recyclage is daar ook gepland enz...

https://www.theverge.com/2017/1/11/1...op-70-megawatt

Tesla will power its Gigafactory with a 70-megawatt solar farm.

Tesla plans to power its Gigafactory in Nevada with a 70-megawatt solar farm, according to a company investor relations document obtained by Electrek. The document, which The Verge confirmed was genuine, was given to analysts at a tour of the Gigafactory last week. At the same time, Tesla announced that it had started production of battery cells at the facility.

The 70-megawatt solar array installation planned for the roof is the biggest news, and Tesla claims it will be seven times larger than the world’s next biggest rooftop solar installation. The plan is for the Gigafactory to not directly consume any fossil fuels, and for the solar installation to provide most of the power needed by the facility. Any excess power generated during the day will be stored by Tesla Powerpack power storage batteries for use at other times. It’s likely that the solar panels will be produced by SolarCity, which Tesla acquired late last year.

Tja hoeveel blijft er dan nog over van die 50 kg CO2 per kWh? Oeps hebben ze dat even vergeten zeg...

Naast PV gaan ze ook wind en geothermie gebruiken, en niet alleen het dak gaan ze volzetten met PV panelen er is daar plaats genoeg rondom of in de heuvels, ook voor wind:

https://www.ecowatch.com/teslas-mass...882120175.html
Tesla's Massive Gigafactory Will Be Net Zero Energy, Powered by 100% Renewables

As reported by CleanTechnica (thanks to tipster Renaud Janson), Tesla’s Co-founder and Chief Technical Officer JB Straubel elaborated last week on the Gigafactory's net zero plans during a talk at the University of Nevada, Reno:

The Gigafactory is maybe the best example we can talk about with this. You know, from the get-go, from the first concept of this factory, we wanted to make it a net-zero facility. So, you know, the most visible thing we are doing is covering the entire site with solar power. The whole roof of the Gigafactory was designed from the beginning with solar in mind. We kept all of the mechanical equipment off the roof. We didn’t put extra, sorta, penetrations through the roof that we didn’t need to and it’s a very, very clean surface that we can completely cover in solar. But that’s not enough solar, though. So we have also gone to the surrounding hillsides that we can’t use for other functions and we’re adding solar to those.

Tesla wants operations to be completely carbon neutral, or have zero emissions just like the company's namesake electric vehicle. According to Straubel, the Gigafactory isn't even hooked up to gas:

The other interesting thing is we wanted to manage the emissions from the Gigafactory. Solar power can do some of that, but we took kind of a radical move in the beginning and said we are not going to burn any fossil fuels in the factory. You know, zero emissions. We are going to build a zero-emissions factory—just like the car. So, instead of kind of fighting this battle in hindsight, we just said we are not even going to have a natural gas pipeline coming to the factory, so we didn’t even build it. And it kind of forced the issue. When you don’t have natural gas, you know, none of the engineers can say, “Oh, but it will be more efficient, let me use just a little bit.” Sorry, we don’t even have it.

So it’s kind of been a fun activity and just, a lot of challenges that come up. But in every single step of the process, we have been able to reinvent and come up with solutions. There’s a heat pump technology that actually ends up way more efficient than just burning natural gas for steam. And then, we have a facility that has basically no emissions. The only emissions are related to the vehicles that might go there that aren’t electric or things like that. But we’ll try to attack that one piece at a time. ...]

https://www.sprout.nl/artikel/innova...as-gigafactory

6. Alleen groene energie

De volledige fabriek draait uiteindelijk op duurzame energie. De daken worden uitgerust met zonnepanelen, er komen extra zonnepanelen op de heuvels in de omgeving en het bedrijf maakt gebruik van windenergie. Ook de hitte van de grond zelf, de zogeheten geothermische energie, benut de Gigafactory.