DeepResource

Observing the world of renewable energy and sustainable living

Archive for the category “solar”

The State of Solar

[worldatlas.com] – Countries That Use The Most Solar Power
[energy-charts.de] – Electricity-production in Germany

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There is Still Potential in Thermal Solar

[ingenieur.de] – Solarthermie: Effizienter durch neue Techniken

Liquid Solar

Solar window covers.

[theepochtimes.com] – Liquid Solar Technology Could Be Next Gen of Renewable Energy

[solarwindow.com]

Solar Panel Array Automatic Cleaning

This is NOT what you want, because of the water:

Thermal Solar Wood Chips Drying

Total collector size: 348 m2, used to dry 4,000 m3 wood chips per year.

Note how thin the collector really is

[cona.at] – Hackschnitzeltrocknung

Solar Road in China

[cleantechnica.com] – China Opens 1-Kilometer Long Solar Road

Printing Solar Cells

Solliance from Eindhoven, The Netherlands, wants to mover away from standard solar panels towards thin film solar and apply those to surfaces like cars, windows, curved building surfaces or even glasshouses:

They are close to printing cheap roles of hundreds of meters of solar thin film cells, with a conversion efficiency of 12.2-13.5 % on the basis of perovskites.

[hightechcampus.com] – Solliance dichterbij drukmachine voor zonnecellen op rol

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New Utility Solar Price Record

[source]

A developer of a 300 MW solar park in Saudi-Arabia, Masdar/Abu Dhabi, is willing to accept the world record low price of 1.79 dollar cent/kWh. There were initially 27 applicants for this tender.

[wattisduurzaam.nl] – Nieuw record: Zonnestroom tegen 1,5 eurocent/kWh voor Saudi’s

Solar Panel Automation Production Line

Solar Driving – State of the Art

Darwin-Adelaide 3021 km (Stuart Highway)

Available data World Solar Challenge 2017:

[worldsolarchallenge.org] – The 41 teams
[worldsolarchallenge.org] – Dashboard, timing

Speed racing

Nuna Solar Team TU Delft: 3021 km, 14:10:41, average speed 81.2 km/h

Cruising

Solar Team TU Eindhoven: average speed 69 km/h, 6 charges, 10197 person-km, 45.7 kWh external energy, average passengers: 3.4, energy efficiency (person-km/kWh) 223.2

Note that the external energy was necessary due to the long distance of 3021 km in merely 6 days. If the available time would have been 12 days, no extra electricity would have been required. In other words, the daily range without external (grid) charging (but “24h” solar charging) under Australian conditions in October would be ca. 250 km with 5 persons.

Eindhoven btw drove with 5 persons until a major technical malfunction occurred, after which no risks were taken and a single driver-passenger completed the race alone, which pressed down the passenger average. If you offset these 250 km with a daily average distance of merely 37 km in an industrialized country like Holland, you can verify that an energy-autonomous car is not a pipe-dream at all.

[wikipedia.org] – Stuart Highway

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LG 365 Watt Solar Panel

LG Efficiency breakthrough 21.1% resulting in a 365 Watt panel or 26% more power than the regular 290 Watt panels of the same size (1686 x 1016 x 40 mm / 66.38 x 40 x 1.57 inch).

Power output warranty:

First 5 years : 95%
After 5th year : 0.4% annual degradation
25 years : 87.0%

[solarelectricsupply.com] – LG NeON R LG365Q1C-A5 365W Solar Panel
[solarpowerworldonline.com] – LG introduces 365-W solar panel to residential market
[wikipedia.org] – LG Corporation

2015 World Solar Challenge Award Ceremony Closing Video

One month to go to the Solar Challenge 2017 in Australia.

Dutch participants:

Technical University Eindhoven

Technical University Delft

Technical University Twente

Solar Challenge 2017 – Sonnenwagen Aachen

Presentation of the Sonnenwagen (solar car), created by the students of the Technical University of Aachen, Germany, who will participate in te Solar Challenge 2017 (8-15 October) in Australia.

[sonnenwagen.org] – Sonnenwagen official site
[rwth-aachen.de] – Rheinisch-Westfälische Technische Hochschule Aachen
[worldsolarchallenge.org] – Solar Challenge official site

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SolarStratus

The Swiss team that traveled around the globe in a solar plane, now wants to reach the stratosphere with a solar plane next year.

[solarstratos.com] – Official project site
[de.wikipedia.org] – SolarStratos

Nuna 9 Revealed

The Delft University has revealed its new model to participate in the Australian Solar Challenge cross continental race in less than two months time.

[news.vattenfall.com] – Nuna9 – A lion in the shape of a solar car
[wikipedia.org] – World Solar Challenge
[nl.wikipedia.org] – Nuon Solar Team
[deepresource] – TU-Eindhoven Presents Stella Vie
[worldsolarchallenge.org]

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Solar EROI

Detractors of renewable energy like to state that the Energy Return on Energy Investment (EROI/EROEI) to too low to be workable. And it is true that the EROI of the installed base of solar panels is much lower than that of say hydro power or 1950s oil from Saudi-Arabia. Our estimate would say around EROI=10.

However, there are developments in the works that should make it clear that a vast improvement of EROI is very well possible, if not realized already. Thin film solar is basically an extremely thin layer of a few nanometers active material on an ultra-cheap substrate of for instance plastic. It is not difficult to understand that the energy input of thin film solar will require much less energy than old-school silicium crystal-based solar cells.

As the graph shows EROI values realized for thin film solar is already in the 34 range with further improvement to be expected.

[wikipedia.org] – Energy returned on energy invested
[wikipedia.org] – Thin-film solar cell
[wikipedia.org] – Cadmium telluride photovoltaics

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Stanford on the State of Solar Technology

Upbeat assessment about the state of photo-voltaic technology from Stanford University in California. Solar efficiencies of 33% at a price of $100/m2 becoming the norm soon.

Solar is doing fine in the “sunshine state” California: from 0 to 5 GW in 15 years, with exponential growth and no end in sight.

[qz.com] – California is getting so much power from solar that wholesale electricity prices are turning negative

WattWay

In Tourouvre, Normandy, NW-France the road building company Solas has constructed one km of solaroad, this time for cars, not just bicycles like in the Netherlands. The “photovoltaic road” comes two years after the completion of the solaroad project in Krommenie in the Netherlands.

The French government (#MakeThePlanetGreatAgain) has ambitious plans to construct 1000 km solaroad over the next five years.

[wattwaybycolas.com] – Wattway/Colas company site
[wikipedia.org] – Smart highway
[zmescience.com] – France announces plans to pave 1,000 kilometers of road with solar panels

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SolaRoad Project Still Alive

Space is scarce in the Netherlands, one of the most densely populated countries in the world, hence the drive to push back water and acclaim new land. But still…

From this background it is understandable that a company by the name of “SolaRoad” came up with the idea to add a new function to bicycle paths: electricity generation via built-in solar cells. The Solaroad is a 73 m bicyclepath, inaugurated in 2014 by the Dutch minister of economic affairs, Henk Kamp. Since then the project has been expanded to include thin film solar cells. Additionally several stretches consist of coating only to study wear. Expected yield: 11700 kWh/year or 70 kWh/m2/year.

In a period of a year 150,000 bicycles passed the Solaroad, leading to considerable wear of the top layer that partially needed to be replaced with better materials.

A competing idea is to cover roads or rail tracks with a solar roof, like has happened in South-Korea and Belgium.

Meanwhile the Solaroad consortium has a solaroad-kit on offer, that is standard stretches of 10 m long bikepaths, aimed at municipalities keen on giving their communities a “green image”. In the province of Groningen a similar bike path has been installed.

The US state of California has signed a letter of intent to have a solaroad constructed there as well.

[cleantechnica.com] – Dutch Solar Bike Path SolaRoad Successful & Expanding
[wikipedia.org] – SolaRoad

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Transparant Solar Panels

Dutch language video

prof. dr. Dave Blank explains his work on transparant solar panels, where he made considerable progress. Means: nano-technology. Vision: windows and roof tiles as solar panels.

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