Green, ethical, energy issues in the news

Martyn1981 · 9 February 2018 at 8:59AM

This is an update article on an earlier one that discussed the Stanford study giving a roadmap to show how 139 countries could operate 100% on WWS (wind, water & sun) by 2050.

New Mark Z. Jacobson Study Draws A Roadmap To 100% Renewable Energy

And here is the original study, showing the UK needs a lot of wind. Note the figures are the percentage from each source, not the capacity in GW's.

lstar337 · 9 February 2018 at 10:04AM

Martyn1981 wrote: »

And here is the original study, showing the UK needs a lot of wind.

Better get eating those sprouts!

Martyn1981 · 13 February 2018 at 12:37PM

Sounds really interesting:-

UK’s first solar-powered ‘Energiesprong’ homes nearing completion

Once finished, the homes will all adhere to the Energiesprong principles of housing developments which stem from the Netherlands. Translating as ‘Energy Leap’, houses built to this standard are effectively net zero energy, generating sufficient energy to meet its demand.

To this end, Melius Homes has tasked Cambridge-based Viridian Solar to supply rooftop solar panels for the refurbishment.

Other principles of the Energiesprong approach require renovation works to be completed within one week while simultaneously allowing residents to remain in their properties. All works are covered by a 30-year warranty for the climate and energy performance and they must effectively pay for themselves through combined savings from energy bills and maintenance.

Martyn1981 · 15 February 2018 at 1:26PM

I think this article is more appropriate to a green energy issue, than to the domestic storage thread.

‘Explosive’ battery storage growth to be driven by falling costs, renewables co-location

Over 9,000MWh of battery energy storage could be deployed in Britain over the next five years as the sector enjoys a trend towards “explosive growth” driven largely by the country's clean energy transition, a market analyst has said.

For an example of scale, that would be equal to a 3GW drop for the evening peak for 3hrs, or around 5%+.

This next paragraph gives an idea of the speed the industry might develop at:

In megawatt-hours, battery energy storage capacities installed in the UK by the end of 2022 will be 50 times what they were as 2017 ended. The report also covers a predicted trend towards longer duration storage in future, comprehensive evaluations of leading players in the industry and analysis of stakeholders.

Martyn1981 · 15 February 2018 at 1:34PM

Fun article looking at 50 years of Danish wind. The chart comparing number of turbines to capacity is interesting. Today there are slightly less WT's than in 2001, but capacity has doubled as ever larger WT's are deployed and the smaller, older ones are decommissioned.

Total Wind Capacity Surges While Total Number Of Turbines May Soon Plummet: Indulging In 4 Decades Of Danish Wind Energy Data

In fact, the oldest 48 turbines keep going strong from the late 1970s despite having a combined capacity of only 2 megawatts. Compare that to the standard Vestas V164 turbine introduced in 2013 with a capacity of 7 — 9 megawatts (MW). That’s a 200-fold improvement!

zeupater · 15 February 2018 at 2:27PM

Martyn1981 wrote: »

... For an example of scale, that would be equal to a 3GW drop for the evening peak for 3hrs, or around 5%+ ...

Hi

To help put this into context ... that describes approx the same level of generation as half of the current nuclear capacity, half of the difference between daytime demand & evening peak, half of peak coal generation so far this winter, the proposed capacity of HinckleyC ... quite amazing really, and all likely to be in place in a quarter of the time it takes to plan & build [STRIKE]a nuc[/STRIKE] some other forms of generation ...

... and all this on top of an annual reduction in energy demand of around 1% over the last few years ...

HTH
Z

Martyn1981 · 15 February 2018 at 4:18PM

zeupater wrote: »

Hi

To help put this into context ... that describes approx the same level of generation as half of the current nuclear capacity, half of the difference between daytime demand & evening peak, half of peak coal generation so far this winter, the proposed capacity of HinckleyC ... quite amazing really, and all likely to be in place in a quarter of the time it takes to plan & build [STRIKE]a nuc[/STRIKE] some other forms of generation ...

... and all this on top of an annual reduction in energy demand of around 1% over the last few years ...

HTH
Z

Thanks. I mentioned context because I have to admit that at first I thought 9GWh doesn't sound much, but in context, and assuming deployment keeps accelerating ..... it's actually quite a different picture.

So whilst it may not all be available at all times, I'm sure a morning boost for the kettle and shower peak plus an evening boost for the longer and higher peak, would be greatly appreciated, and probably have a significant impact on peak prices and peak carbon intensity in the evening - low hanging fruit, and all that.

michaels · 15 February 2018 at 5:01PM

Martyn1981 wrote: »

Thanks. I mentioned context because I have to admit that at first I thought 9GWh doesn't sound much, but in context, and assuming deployment keeps accelerating ..... it's actually quite a different picture.

So whilst it may not all be available at all times, I'm sure a morning boost for the kettle and shower peak plus an evening boost for the longer and higher peak, would be greatly appreciated, and probably have a significant impact on peak prices and peak carbon intensity in the evening - low hanging fruit, and all that.

Problem is, if you cover the peak too effectively then you get rid of the peak pricing which was the factor that made the battery investment make sense in the first place....

Martyn1981 · 15 February 2018 at 7:15PM

There's now over half a TW of wind capacity in the world.

Global Wind Installations Reach 52.5 Gigawatts In 2017, Brings Total To 539.5 Gigawatts

NigeWick · 16 February 2018 at 10:18AM

michaels wrote: »

Problem is, if you cover the peak too effectively then you get rid of the peak pricing which was the factor that made the battery investment make sense in the first place....

Apart from, when local solar and battery backup is less than the cost of grid transmission.

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