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iLikeMeeces t1_ixy7mam wrote

Reply to comment by BLSmith2112 in Record efficiency of 26.81% for large silicon solar cells by Wagamaga

What?! That is completely untrue.

For a solar farm to equal a nuclear reactor's output (let's say 1000MW) it would require about 40 square miles of land. A nuclear facility requires about 1.5 to 2 for that same output.

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Tomcatjones t1_ixy9u6a wrote

First of all… your figures are incorrect lol

but you are right the size isn’t the same.

The largest solar park is 21 square miles. And it produces 2.5 GW

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7734128 t1_ixyawu1 wrote

There's a greater difference than that. Not that it matters that much, as we have quite a lot of dessert and wasteland globally.

A 2.5 GW solar plant would in reality average between 0.25 and 0.5 GW due to limited capacity factor. A nuclear power plant usually also use multiple reactors, with only limited increase in size.

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BasvanS t1_ixzs6tf wrote

A power plant can’t be built on rooftops. Rooftops also have less inefficiency from grid transmissions. HEMS however have lower efficiency when battery power is used. Nuclear power plants are open to attacks. So is the software of inverters. It’s a messy calculation, but below the line to me the decentralized solution, with solar energy generated close to where it’s used and excesses stored in EVs is the winning combo.

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ukezi t1_ixydbun wrote

That is 2.5 GW peak, average will be a lot lower.

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Tomcatjones t1_ixye4sh wrote

732,874mwh per year

Which is 2000 per day

Pretty damn good. 3.1cents per kWh in 2020

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