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Prof. Mark Jacobson – new research for 100% global renewable energy

Environmental Research Web 21st April 2018 , Dave Elliott: Prof. Mark Jacobson and his team at Stanford University got some flack for their 100% global renewable energy study last year. It said
139 countries around the world could obtain 100% of their energy from wind,
water and solar (WWS) sources by 2050.

It had been based on their 2015
study that examined the ability of 48 US states to meet all their energy
needs stably from these renewables. Some said their approach was flawed,
and, for example, relied too heavily on energy storage solutions and on
adding turbines to existing hydroelectric dams to get extra power.

In response, Jacobson and colleagues at Stanford, the University of California
at Berkeley and Aalborg University in Denmark have now produced a new
study, focusing on 20 global regions encompassing the 139 countries, with
supply and demand matching modelled for a range of storage/backup options
over the period 2050-54.

The team is adamant that there would be no major
problems with balancing. They note that many previous studies had examined
matching time-dependent demand with supply for up to 100% renewable
electricity and some has looked at all-energy matching. All had found that
‘time-dependent supply can match demand at high penetrations of renewable
energy without nuclear power, natural gas, or fossil fuels with carbon
capture’. So had they.

But they claim to have added more certainty: in
their new scenarios they say ‘100% of all end-use energy, rather than
100% of just electricity (which is ~20% of total end use energy), is
decarbonized’ with balancing solutions found ‘by considering many
storage options, namely heat storage in rocks and water; cold storage in
water and ice; electricity storage in CSP-storage, pumped hydropower,
existing hydropower reservoirs, and batteries; and hydrogen storage; and by
considering demand response and, in one scenario, heat pumps’.

http://blog.environmentalresearchweb.org/2018/04/21/jacobsons-new-100-renewables-model-aims-to-rebut-critics/

April 22, 2018 Posted by Christina Macpherson | 2 WORLD, renewable | Leave a comment

In 2017 Solar Power Investment Outstripped Coal, Gas And Nuclear Combined

Solar Power Investment Outstripped Coal, Gas And Nuclear Combined In 2017  Mike Scott , CONTRIBUTOR https://www.forbes.com/sites/mikescott/2018/04/09/solar-power-investment-outstripped-coal-gas-and-nuclear-combined-in-2017/#7b702bfd1237

• 
  The world added more solar capacity than coal, gas, and nuclear plants combined
• a complete energy transformation goes beyond electricity to include the end-use sectors of heating, cooling and transportation, where there is substantial opportunity for growth of renewables

• More money was invested in solar power in 2017 than in coal, gas and nuclear power combined, according to a new report for the United Nations Environment Programme (UNEP).

  The report says that global investment in solar rose 18% to $160.8 billion, driven by the Chinese market, which was responsible for more than half of the world’s 98GW of new solar capacity.

  Solar power made up 57% of last year’s total for all renewables (excluding large hydro) of $279.8 billion, and it towered above new investment in coal and gas generation capacity, at an estimated $103 billion.

  A record 157GW of renewable power were commissioned last year, up from 143GW in 2016 and far higher than the net 70GW of fossil-fuel generating capacity added (after adjusting for the closure of some existing plants) during the same period.

  The Global Trends in Renewable Energy Investment 2018 report, released by UNEP and Bloomberg New Energy Finance, finds that falling costs for solar electricity, and to some extent wind power, are continuing to drive deployment of renewable technologies.

  A separate report from the International Renewable Energy Agency said that renewable capacity including large hydro grew 167GW, or 8.3%.

  “ The world added more solar capacity than coal, gas, and nuclear plants combined ,” said Nils Stieglitz, President of Frankfurt School of Finance & Management. “This shows where we are heading, although the fact that renewables altogether are still far from providing the majority of electricity means that we still have a long way to go.” In addition to the rapid growth of the solar PV market, the amount of wind power capacity grew by 10%, IRENA said.

  Last year was the eighth in a row in which global investment in renewables, excluding large hydropower, exceeded $200 billion – and since 2004, the world has invested $2.9 trillion in these green energy sources, the study found.

  “This latest data confirms that the global energy transition continues to move forward at a fast pace, thanks to rapidly falling prices, technology improvements and an increasingly favourable policy environment, said IRENA Director-General Adnan Z. Amin. “Renewable energy is now the solution for countries looking to support economic growth and job creation, just as it is for those seeking to limit carbon emissions, expand energy access, reduce air pollution and improve energy security.”

  Chinese investment in solar jumped by 58% to $86.5 billion, leading to the addition of 53GW of capacity. China, the world’s biggest emitter, has set itself the target of sourcing a fifth of its electricity by 2030. Its investment in all renewable technologies was a record $126.6 billion, 31% higher than the year before.

  Asia as a whole accounted for almost two thirds of new capacity, with a tenth of the global total coming from India, mostly in solar and wind.

  The burgeoning renewable power market came in spite of the anti-clean energy sentiment of the administration of President Donald Trump and significant falls in investment in markets such as the UK. US investment fell 6% to $40.5 billion while European funding slipped by 36% to $40.9 billion, mainly because of a 65% drop-off in the U.K. to $7.6 billion and a 35% decline to $10.4 billion in Germany. Japan followed a similar trend in Japan, which dropped off 28% to $13.4 billion.

  As well as the Chinese surge, this was compensated for by sharp increases in investment in Australia (up 147% to $8.5 billion), Mexico (up 810% to $6 billion), and in Sweden (up 127 per cent to $3.7 billion).

  Angus McCrone, Chief Editor of Bloomberg New Energy Finance and lead author of the UNEP report, said: “In countries that saw lower investment, it generally reflected a mixture of changes in policy support, the timing of large project financings, such as in offshore wind, and lower capital costs per megawatt.”

  The $2.7 trillion invested in clean energy from 2007 to 2017 have increased the proportion of electricity generated by wind, solar, biomass and waste-to-energy, geothermal, marine and small hydro globally to more than 12%, from 5.2% in 2007, BNEF said, and has avoided the emission of about 1.8 gigatonnes of CO2, about the same as is emitted by the entire US transportation system.

  UN Environment head Erik Solheim said that “the extraordinary surge in solar investment shows how the global energy map is changing and, more importantly, what the economic benefits are of such a shift. Investments in renewables bring more people into the economy, they deliver more jobs, better quality jobs and better paid jobs. Clean energy also means less pollution, which means healthier, happier development.”

  However, IRENA’s Amin added that “despite this clear evidence of strength in the power generation sector, a complete energy transformation goes beyond electricity to include the end-use sectors of heating, cooling and transportation, where there is substantial opportunity for growth of renewables

April 11, 2018 Posted by Christina Macpherson | 2 WORLD, renewable | Leave a comment