The hidden costs of powering civilization //

I want to ask you a question we don’t usually think about when we flip a light switch or fill up a tank…and that is, where does the energy actually come from?

Sure, sunlight, wind, and even coal and gas are technically free, they are energy sources just sitting there in nature to be used… some facing more limitations than others. But turning them into power we can actually use to run Santa Claus’ chocolate factory or light our christmas trees? That’s a whole different story.

This is where the idea of primary energy comes in. It’s actually not about the electricity we see listed on our bills, but is really about all the raw energy we have to pull from nature, to process, convert, and deliver before we get anything useful, such as 24/7/365 electricity, every single second we need it. And once you start looking at energy this way, things get a lot clearer.

We often hear that solar and wind energy is “clean” and basically “free” and it does not have thermal losses like a nuclear or gas-fired power plant. But to make this wind and solar energy usable and reliable in the real world, we have to build enormous support systems, mine rare minerals, manufacture components, build storage, upgrade the grid, maintain everything, and then, eventually, dispose of it. It’s not just about a solar panel and a little breeze blowing over a turbine blade.

Now compare that to conventional fuels like coal or gas or oil… they might lose more energy during combustion in power plants or engines, but the upfront infrastructure is simpler, and the systems last much longer, with the average coal or gas plant running for a good 30-60 years, nuclear usually far longer. That is not nothing and this should be considered when speaking of “free” energy.

Understanding primary energy helps cut through the feel-good stats and get down to the physics. It assists in showing us the full cost of electricity (FCOE), time, money and materials used in making any source truly usable…and once you see it, you can’t unsee it.

That is why looking at the real problem with the “Primary Energy Fallacy” often used by supporters of grid-scale wind and solar, is worth it! //

The “Primary Energy Fallacy” a term coined eloquently by many, is the idea that all primary energy from fossil fuels must be replaced by an equivalent amount of “renewable” energy. However, those people say, this would not be necessary because more than two-thirds of primary energy is lost as wasted heat during the conversion processes.

The misunderstanding occurs in the belief that wind and solar generate electricity without any losses (a secondary or tertiary form of energy) while coal, gas, uranium may have a high energy content but have “thermal losses” ~60-70% during processing. This PE fallacy argument is used for power generation and also for internal combustion engine vehicles (ICE) in a slightly adjusted form.

• Stated Primary Energy Fallacy 1: “The conversion of gas and coal to power results in a loss of around 60%. This means that one unit of primary energy from wind or solar, replaces two units of that of gas/coal”
• Stated Primary Energy Fallacy 2: “The conversion losses during end use in internal combustions engines ICE are also high. Electric motors are much more efficient. Most car engines ‘lose’ 70% of fuel energy, which means that one final energy unit of electricity replaces three units of gasoline/diesel”