Rethink Zero / Sustainable energy engineer - Arctic specialty / Aero engineer / Energy and power systems (policy) development / Looking for a PhD pos. /
Jul 8, 2020 • 10 tweets • 4 min read
(1/9) Within the same article, a politician casually brings forward that changing the energy supply of Tata-steel (from coal to hydrogen) would be a major aid in reducing Dutch CO2-emissions. I did those calculations a while ago and it is, of course, not as easy as 1-2-3.
First, the background. Tata-steel-(IJmuiden) is a steel manufacturer, utilizing, among others, a blast furnace and steel mill. Energy consumption (2013): 4.1 million metric tons of coal
314 million m³ of natural gas 2.1 TWh.
We can use these numbers for ball-park estimates.
May 17, 2020 • 8 tweets • 3 min read
Based on this article and conversation with Thijs, I wondered how things actually stacked up with regard to raw materials usage per TWh of energy delivered.
Most people know this image:
It shows how many 1,000 tons per TWh of energy is used. Though this is a bit deceiving.
A. Tons of material does not equate ton tons of raw materials.
B. It doesn't show the impact of fuel use
The original table is presented (from the DOE QTR 2015)
Apr 13, 2020 • 41 tweets • 8 min read
A long-read focused on energy prices, specifically negative electricity prices.
I’ve seen many posts and opinions about this subject, both right and wrong, often used to persuade a reader of a specific point.
Strap in for a long read on energy-pricing!
Quick examples: (1) Nuclear(-inflexibility) would cost the tax-payer dearly:
