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Which car is more sustainable, an all-electric Tesla Model 3 or a gas-powered Prius?

Operation You can use AFLEET, the Alternative Fuel Life-Cycle Environmental and Economic Transportation tool, from Argonne National Laboratory, to quickly do this analysis. Using the US average ...
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3 votes
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What is the typical embodied energy of a solar photovoltaic panel?

According to the Wikipedia article on EROI, 585 kWh/m2 is a median value for the embodied energy of a photovoltaic panel, rated based on surface area. The "energy invested" critically depends on ...
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3 votes

What is the typical embodied energy of a solar photovoltaic panel?

Energy payback in 1-6 years Taking manufacturing variables into account basically gives you a range of time from 1.25 - 6.5 years based on 5 sunny days out of seven and an average of 6-8 hours of sun ...
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2 votes

What is the typical embodied energy of a solar photovoltaic panel?

Typical period would be 2 years for embodied energy payback, using a nominal 200 peak watt per square meter and 600 kWh embodied energy. Sunny regions have over 5 peak solar hours per day and more ...
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2 votes

What is the typical embodied energy of a solar photovoltaic panel?

If the "embodied energy" of photo-voltaic tech is ~585kWh/m^2 and it generates ~0.2 kW/m^2 then; the answer to the question seems to be that the photo-voltaic tech will need to run for: ~(...
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2 votes

More sustainable pick-me-up: can of coke or cup of tea/coffee?

TL;DR -- The best option, per liter, is tea. Soda is about twice as "bad," and coffee is two times worse than that. To compare the environmental impact of various beverages we need to perform a life-...
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2 votes

More sustainable pick-me-up: can of coke or cup of tea/coffee?

Sustainability isn’t just about energy. It also involves other pollutants and water usage. Tea uses 100 times the volume you drink to be produced. [1] And according to this [2] it takes 65 times ...
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