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Archive for the category “renewable”

“Coal is Dead and Oil is Heading for Peak Demand”

[source]

That’s not us saying so, but the world’s largest investment group BlackRock. These people are not particularly concerned with depleting resources, deteriorating environment or climate change, but in hard money only.

BlackRock, the world’s largest investment group, with $5 trillion in assets — more than the world’s largest banks — has begun to bet on clean energy. Why? “The thing that has changed fundamentally the whole picture is that renewables have gotten so cheap,” said [Jim] Barry.

President Trump is betting on reviving America’s coal industry, but BlackRock considers that to be a mistake.

The economic reality is that cheap fracked gas and plummeting prices for clean energy has squeezed both coal production and coal consumption to levels not seen for decades…
Because of the rapidly improving performance and cost of batteries, Barry is “bullish” on electric vehicles. And as a result, he is bearish on oil demand, noting that “there was always this historic view on oil about peak supply but it’s about peak demand being an equal dynamic.”

[thinkprogress.org] – ‘Coal is dead’ and oil faces ‘peak demand,’ says world’s largest investment group
[wikipedia.org] – BlackRock

Sustainable Energy in China

[docsonline.tv] – Full documentary (paywall)

Ocean Thermal Energy Conversion (OTEC)

Essence: convert a vertical ocean temperature gradient in electricity

[wikipedia.org] – Ocean thermal energy conversion
[bluerise.nl] – Blue Rise company home page
[oceanenergy.tudelft.nl] – TU Delft Ocean Energy department
[google.com] – Blue Rise picture carousel
[Luis Vega OTEC Summary] – OTEC: Electricity and Desalinated Water Production – Luis A. Vega, Ph.D. (pdf, 29p)

Operation: ocean vertical temperature gradient of 25 degrees Celsius. Continuous production of electricity has been demonstrated in pilot projects, like Hawaii 210 kW plant between 1993-1998. Minimum capital cost: 6$/Watt for a 50 MW plant. If only 10 km offshore, $4.2/Watt and $0.07/kWh is achievable. Hawaii could generate 100% of its electricity needs from OTEC.


Global potential

Read more…

Smart Grid Denmark

New German Renewable Record

During past Sunday April 30, a breezy and sunny day, German coal-fired power stations produced an all-time capacity low; between 15-16 hour less than 8 GW (coal 1.8 GW, lignite 6.2 GW). Nuclear 5 GW. Solar and wind produced 55.2 GW at 12:00. Between 13:00-15:00 the renewable share was 85%.

This situation will be the new normal by 2030, 13 years from now. By 2022 nuclear will be completely phased out.

[agora-energiewende.de] – Ein Sonntag fast ohne Kohlestrom

Under Water Kites

Youtube text:

Minesto develops a new concept for tidal power plants called Deep Green. Deep Green is based on a fundamentally new principle for electricity generation from tidal currents. The power plant is applicable in areas where no other known technology can operate cost effectively due to its unique ability to operate in low velocities. Minesto expands the total marine energy potential and offers a step change in cost for tidal energy.

The principle of the technology can be explained as a two stage process.

The first stage increases the relative flow speed entering a turbine. When the tide hits the wing it creates a lift force, since the kite is mounted to the ocean bed with a tether and is controlled by a rudder, the kite can be taken in the desired trajectory, here in an eight formed path. The method increases the flow velocity into the turbine by 10 times, compared to the actual stream velocity.

The second stage uses a generator to convert kinetic energy into electrical power.

The net result is increased power from a smaller package. The planned normal full size weighs only 7 tons excluding anchoring which gives an energetic payback time of 3 weeks, compared to 8 months for onshore wind.

The test confirms power production of the plant at Marin in Holland.

Potential: 800 kW per kite
First project: Anglesey, Wales/UK (Holyhead Deep)
Project size: eventually 80 MW
Span width kite: 12 meter
Argument pro under water kite: one needs 15 times less material per generated kWh as compared to wind turbines

[wikipedia.org] – Tidal kite turbines
[minesto.com] – Minesto Holyhead Deep, 30 million euro project
[trouw.nl] – Een onderwater-vlieger haalt stroom uit de stroming

Smurfit Kappa – Radical Recycling in the Paper Industry

Paper-mill Smurfit-Kappa in Roermond, the Netherlands, wants to replace the role of natural gas with “green heat”. The paper industry is doing fine, not because of digitization of society (“paperless office”), but because retail is going online and now everything needs to be packaged, in carton, which is good news for Smurfit Kappa.

Every day no less than 110 trucks arrive at the mill to dump their load of used paper for recycling into “mother roles” of 18,000 kilo each, a process that takes 8 days. Usually paper that lands in the trash can is converted into new paper in a matter of 6 weeks.

For the production process you need a lot of warm water to produce “paper soup”. The company is thinking of pumping up hot water from a depth of no less than 7 km. Alternatively, the company is investigating the possibilities of producing paper without so much hot water. Paper recycling still requires 10% new wood, for quality reasons, acquired from Scandinavia and France.

[wikipedia.org] – Smurfit Kappa Group
[trouw.nl] – Papierfabriek zoekt groene warmte

90 Professoren Willen Groene Draai Geven aan Kabinets-formatie

[source]

90 hoogleraren van 16 nederlandse universiteiten hebben een brief geschreven naar de formateur met het verzoek om in het aanstaande regeringsakkoord opgenomen te krijgen dat Nederland koploper moet moet worden in de worsteling voor een groene economie, ipv Europese hekkesluiter te blijven.

Hoogtepunten:

…de vijf overgebleven kolencentrales in Nederland uiterlijk in 2020 sluiten. Verder vragen ze om snelle invoering van een kilometerheffing in het verkeer. Ze bepleiten een CO2-belasting voor de Nederlandse industrie, los van het gebrekkig werkende Europese systeem van CO2-beprijzing. Ze willen hoge fiscale heffingen op milieubelastende en energie-intensieve productie en consumptie. En ze vragen om een investeringsfonds voor duurzame innovaties.

[trouw.nl] – Hoogleraren: zet alles op alles voor een groene economie

Hydrogen – Fuelling our Future?

Can hydrogen be the successor of petrol and natural gas after all?

[wikipedia.org] – Hydrogen

Four Phases in Variable Renewable Energy Integration

Four phases in variable renewable energy (VRE) technologies integration.

IEA article addresses the issue of renewable energy variability and how to deal with it and identifies four phases, hand in hand with the level of renewable energy penetration in a society.

  1. No impact. You can add new renewable energy capacity without having to worry about variability at all
  2. Focus shifts to managing first instances of grid congestion and to incorporate forecasts of VRE generation in the scheduling and dispatch of other generators.
  3. In the last two phases, wind and solar start to affect the overall grid and other generators. As the share of VRE grows, the challenges that power systems face will relate both to system flexibility – relating to supply and demand in the face of higher uncertainty and variability – and system stability – the ability of the of power systems to withstand disturbances on a very short time scale.

[iea.org] – Getting wind and sun onto the grid

30,000 Solar Panels Will be Installed Every Hour Globally Over the Next 5 Years

International Energy Agency, October last year:

The International Energy Agency said today that it was significantly increasing its five-year growth forecast for renewables thanks to strong policy support in key countries and sharp cost reductions. Renewables have surpassed coal last year to become the largest source of installed power capacity in the world.

The latest edition of the IEA’s Medium-Term Renewable Market Report now sees renewables growing 13% more between 2015 and 2021 than it did in last year’s forecast, due mostly to stronger policy backing in the United States, China, India and Mexico. Over the forecast period, costs are expected to drop by a quarter in solar PV and 15 percent for onshore wind.

Last year marked a turning point for renewables. Led by wind and solar, renewables represented more than half the new power capacity around the world, reaching a record 153 Gigawatt (GW), 15% more than the previous year. Most of these gains were driven by record-level wind additions of 66 GW and solar PV additions of 49 GW…

Over the next five years, renewables will remain the fastest-growing source of electricity generation, with their share growing to 28% in 2021 from 23% in 2015.

[iea.org] – IEA raises 5-year renewable forecast as 2015 marks record year

Saudi-Arabia 10% Renewable in 2023

Ask people which country they identify most with oil, chances are they will answer “Saudi-Arabia”. Yet this country of 33 million inhabitants has announced that it wants to invest a majestic sum of $30-50 billion until 2023 and realize 10 GW in renewable energy capacity, or 10% share of the overall electricity budget, up from less than 1% now. Even oil champ Saudi-Arabia is investing huge sums of money in oil’s successor. It is difficult to find a better indicator that the end of oil age is in sight.

[arabnews.com] – Saudi Arabia to invest $30-50bn in renewable energy by 2023
[wikipedia.org.] – Energy in Saudi Arabia

Germany 41% Electricity Renewable in March 2017

New monthly record in renewable electricity production in Germany: 41% or 19.5 TWh, where the nuclear power share fell to its lowest level since 1970. Additionally a new peak power record was broken on March 18 of 38.5 GW, topping the old one of 38 GW (Feb 22).

[energytransition.org] – March was a record month for renewable power in Germany

The Netherlands Fossil Free in 2030

“A new world”. Dutch economist and politician Herman Wijffels about the necessity of a global sustainable transition.

There is pressure mounting in the Netherlands that the country should speed up the implementation of the Paris accords and EU energy policy of “Europe fossil free by 2050” and get the country largely fossil-free as early as 2030. The public financial position of the Netherlands is good (surplus) and there is broad popular support for the 2030 policy objective. And last but not least: there is a large commercial advantage if you are able to offer energy services to the rest of a world-in-transition. The idea is to influence the program of the new government, the formation of which is yet underway.

[en.wikipedia.org] – Herman Wijffels
[energiecommissie.nl] – Sign the petition for The Netherlands fossil free by 2030.
[drift.eur.nl] – Oproep aan nieuw kabinet: Nederland fossielvrij in 2030
[deepresource] – Netherlands Sustainable by 2030
[gewoon-duurzaam.nl] – Manifest Jan Terlouw voor een duurzamer Nederland

[gewoon-duurzaam.nl] – New Dutch national energy commissioner Ruud Koornstra.
[duurzaam-ondernemen.nl] – Ruud Koornstra eerste Energiecommissaris van Nederland

Dutch Island Ameland Energy Independent in 2020

Ferry to Ameland. Every Dutchman has positive associations with the island of Ameland. Ameland: that’s beaches, dunes, birds, holiday, cycling trips.

The ambitious mayor of Ameland wants to bring his island energy independence with solar panels, fuel cells, heat pumps, energy storage and bio gas. No wind turbines.

[en.wikipedia.org] – Ameland
[duurzaamameland.nl]

[source]

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German Voice Against Energy Wende

Youtube text:

Published 3 nov. 2014

Universitätsöffentlicher Vortrag von Prof. Dr. Dr. h.c. mult. Hans-Werner Sinn, Präsident des ifo Instituts, 16. Dezember 2013

[ifo.de] – Energiewende ins Nichts

Wir haben ein Klimaproblem: 85 Prozent des Endenergiebedarfs der OECD-Länder und auch der Bundesrepublik Deutschland werden aus fossilen Brennstoffen gewonnen. Davon müssen wir weg. Bislang schien die Atomkraft den Weg in eine klimaneutrale Energieversorgung zu ermöglichen. Mit der Energiewende und ihrem Ausstieg aus der Atomkraft und den fossilen Energien steht man nun mit ziemlich leeren Händen da. Die Vorstellung, die Energieversorgung Deutschlands mit Wind- und Sonnenstrom aus heimischen Quellen zu sichern, ist eine Illusion. Die unsichere Versorgungssituation ist Gift für die Investitionsplanung der deutschen Industriefirmen. Die deutsche Politik sollte umsteuern und ihren nationalen Alleingang aufgeben. Professor Hans-Werner Sinn erläutert in einem universitätsöffentlichen Vortrag in der Großen Aula der Ludwig-Maximilians-Universität die Konsequenzen der aktuellen Energiepolitik.

[de.wikipedia.org] – Hans-Werner_Sinn

Power to Gas

Storage of intermittent renewable energy is one of the core challenges that needs to be addressed to make the energy transition away from fossil fuel work. Pumped hydro is a reliable method, but this requires the presence of mountains and valleys and these are in overpopulated Europe in short supply. Another approach is the conversion of renewable electricity into gas, like H2, CH4, CO, etc. “Power-to-gas”.

Read more…

Blueprint for 100% Renewable Energy Base in Germany

d-erneuerbar[Source]Share renewable energy Germany timeline

The renowned German Fraunhofer research institute presented in 2012 a blueprint of how a 100% renewable energy base could be realized in Germany. From the summary (p31):

It is possible for Germany to have a 100% renewable energy base (electricity and space heating) with a cost comparable with today and equal electricity consumption. Assumed though is a reduction of 50% of energy required for space heating through insulation measures. Wind power opportunities need to be completely exhausted. Long term energy buffering can be done with methane gas produced from renewable electricity. Warm water production from solar collectors and industrial waste heat, combined with seasonal storage. Installed PV: 200 GW (1250 million m2), solar-thermal: 130 GW (190 million m2). 75% can be installed on existing building roof tops. Additional required surface area: 400 km2 (20 x 20 km) or 0.011% of Germany.

[ise.fraunhofer.de] – 100 % Erneuerbare Energien fuer Strom und Waerme in Deutschland (German)

Scotland Gearing Up For 50% Renewable Energy by 2030

wind-scotland
[source]

The government of Scotland aims to increase the speed with which it wants to implement new renewable energy capcity to the tune of 50% by 2030. This involves overall energy consumption, including heat and transport, so not just electricity.

[news.gov.scot] – The future of energy in Scotland
[cleantechnica.com] – Scotland Aims For 50% Renewable Energy By 2030

790 GW Renewable Energy Potential SE-Europe

renewable-energy-potential-south-east-europe

The report underscores that SEE possesses vast technical renewable energy potential – equal to some 740 GW.” This renewable energy potential is dominated by wind and solar. “The region’s wind energy (532 GW) and solar PV (120 GW) potential is largely untapped, and 127 GW of this overall renewable energy potential could be implemented in a cost-competitive way today.”

[irena.org] – Cost-competitive renewable power generation: Potential across South East Europe (pdf 124p)
[cleantechnica.com] – 790 Gigawatts of Cost-Cutting Renewable Energy Potential in South East Europe

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