Green Energy

The 600000 € probably include the development cost. Thus, on a larger scale, the cost per unit length will decrease significantly.

2 axis solar trackers are much more efficient, but fixed installation beats them in cost/W in many cases.

Any solar installation gets dirty, the question is do you save labor/equipment cost by having them cleaned by a single solar cleaning train, vs. tons of workers or automated brushes cleaning a large open field installation. Do you need to do cleaning passes after every train? Daily? Monthly? Yearly? Is there an intersection of efficiency loss and cleaning investment that is profitable?

If you could install and maintain them in a fully automated way with just a few specialized trains, I can see why it might be an attractive idea. Question is how automated can you make it really? Do you need to fasten the panels down? How do you tie them into the grid?

If the savings on installation, maintenance and cleaning offsets the loss in revenue from the suboptimal placement and dirt, it might work.

I could see this working out if deployed on large scales, where the up front investment of developing all the specialized process and equipment, like trains, becomes a small part of the cost.

Any such proof of concept installation of an unproven technology will be more expensive than if you really deploy it at scale.

If rail didn't exist today and we had to develop the first train and track and all the necessary infrastructure around it, the first 10km would be ludicrously expensive and would never pay itself off compared to the existing road network or shipping routes.

It's a finetuning and risk taking problem. Does the idea make sense in a vaccum? And does the idea work in competition with existing solutions? Is anyone willing to invest enough money to make it competitve?

I hate it when extremely complex multi-variate problems always get judged based on one or two possibly negligable variables because of ignorance or intellectual laziness. Sometimes you can successfuly jugde things this way, yes, but rarely are things that simple.

Wouldn't it be better to place panels on the train roofs?

Trains drop metal bits pretty often too. A lot of these panels will get shattered

As always with these fancy ideas it is a solution for something that is not a problem: We aren't even close to running out of suitable space to put solar panels. The problems for solar are usually just willingness, bureaucracy, or the electrical grid not being able to handle the additional load.

We've also had proposals for solar bricks for paving roads/parking lots, putting the panels as dividers between highway roads. It just doesn't make sense to overcomplicate things.

Come back once every single parking lot, large roof, unused radom patch of land, or even agricultural land (there are some interesting setups where the shade provided by solar panels is actually beneficial for the plants) is fully utilized. But chances are that at that point we already have more than enough capacity.

It’s free real estate and incredibly efficient use of space. If it works, with all the challenges other have outlined - even at a reduced yield - it’ll still pay off.

These people can get fucked. Everyone can get fucked. We don't need new ideas we need old ones.

We need the market to be able to react. Being able to build on land, fuck the NIMBYs. And being able to connect to the grid quickly, there is different ways to sort this but it comes from government intervention.

Then if you want more progress it's externalities. Tax fossil fuels and use the same money to subsidise renewables and batteries, and grid upgrades.

Or another possibility is mandate shutdowns based on a percentage over time (this will work better for EVs I think than than utility power. "Oh you want tariff on Chinese cars. Well fine you will have that for 10 years and in return 100% of your sales need to be evs in 10 years and to get you moving in 5 years its 25%, 6 40%, 7 55%, 8 70%, 9 75%.")

It's getting so tiring now that they have evidence of what works and instead just talk about how the worlds going to be different in 2050. Start building some fucking grid upgrades then. You know it is going to take 10 years tondo anything meaningful, you know you are 10 years behind, you know if you build it they will come.

Christ

Covered Highways. The benefits of additional PV and the benefits less rain and less sun glare on drivers. You could also install a tram like wires above in one lane for maintaining the EV charge on trucks and buses.

To clean them, simply attach a big brush to the underside of the trains. 👍