Renewables boost in Germany: turning the corner after a bad year?
DAVID TOKE, SEP 15, 2023 https://davidtoke.substack.com/p/renewables-boost-in-germany-turning
Germany could be turning a corner after a bad year in 2022 as renewables increase and solar power deployment dramatically increases. 2022 saw coal electricity production increase driven by a mixture of the need to substitute for Russian natural gas and the phase-out of nuclear power. In the first half of 2023 compared to the same period in 2022 coal production as a proportion of electricity fell back from 31 per cent to 27 per cent. Renewable energy increased from 48 per cent to 53 per cent. See here.
On top of that solar pv deployment is surging ahead at the rate of over 1 GW a month according to PVMagazine. To put this in context this means that solar pv’s share of electricity production increases by somewhat over 2 per cent per annum. Of course, that’s certainly not enough on its own, but it is a start. Energy Minister Habeck hopes that planning reforms he oversaw will dramatically increase wind power deployment rates. These have been flagging in recent years.
The production of renewable energy is higher in Germany compared to other countries. Rapid progress in renewables growth is set to resume with reforms introduced by the current Government in which the Green Party’s Robert Habeck holds the Economic Affairs and Climate Action portfolio. However Germany is still to recover from the impact of the shutdown of Nordstream 1 gas pipeline from Russia and the big increase in energy costs involved in the pivot away from Russian gas.
Certainly, the embrace of Russia was not a choice favoured by Greens, who argued for energy conservation and renewables instead. But the geopolitical blunder, led by the the SDP’s former Chancellor, Gerhard Schroader, is costing Germany dearly. By contrast there was much greater consensus on phasing out nuclear power after the Fukushima accident in 2011.
The strength of coal interest in Germany has continued, with a completed phase-out now set for 2038. The strength of coal interests in Germany has been much higher compared to the UK because the UK has had (at least in the past) greater availability of cheap gas from the North Sea. Natural gas prices rose for the UK after 2006, but by then most of the coal electricity production had been replaced by natural gas.
There has been a big struggle recently over a heating law. The opposition was fiercely opposed to a mandatory phase-out of gas boilers by 2025. This was ultimately watered down so that, in effect, consumers can still replace gas boilers if there is no provision for local district heating networks.
The provision of district heatimng networks, already a lot more common than in the UK, is to be radically increased. They will be supplied by large-scale heat pumps. It should be mentioned that a law since 2021 effectively bans gas boilers in new buildings – something that is not yet the case in the UK.
Solar energy boost for France
CNR is leading a consortium in the development of “Ombrières
PHotovoltaïquE grand LIneAire”, a solar shading project along the
ViaRhôna cycling route in southern France’s Caderousse department,
alongside the Rhône River.
The pilot project aims to evaluate the
integration of a PV facility into the landscape and assess its energy
performance. The project partners include French cable supplier Nexans,
Schneider Electric, railway operator SNCF, and the SuperGrid Institute.
The PV system will span 900 meters in length and have an installed capacity of
900 kW. It will consist of 30 shaded structures with west-east oriented
solar panels. The consortium will conduct tests on the system’s overall
architecture and the equipment needed for transporting medium voltage
direct current (MVDC) electricity to the delivery point. Construction and
testing are scheduled for the 2025-28 period, following a three-year phase
of engineering studies, research and development (R&D), and prototyping.
PV Magazine 13th Sept 2023
https://www.pv-magazine.com/2023/09/13/french-consortium-plans-900-kw-solar-cycling-path/
In Australia, big batteries and solar push new boundaries on the grid
The rapid evolution of Australia’s energy system continues apace as the
mild weather of spring and new production benchmarks give voice to the new
capacity that has been added over the past 12 months. As noted earlier this
week, spring is the season for new records because of the good conditions
and moderate demand.
In South Australia on Sunday, solar set a new record
of 120 per cent of local demand in the state (the excess was exported to
Victoria) and on Wednesday and Thursday it was the turn of wind and battery
storage. Wind hit a peak of 141.4 per cent of local demand at 4.35am on
Thursday morning. That wasn’t a record in itself, but the big share of
wind and later solar during the daytime was accompanied by a record amount
of activity from the state’s growing fleet of big batteries.
Renew Economy 14th Sept 2023
Ukraine plans up to 1GW wind farm in Chernobyl nuclear disaster zone
Five years after a small solar farm was built at the site, Ukraine has
unveiled plans to develop a potentially huge wind power plant in the
Chernobyl exclusion zone – the site of the worst nuclear power plant
disaster in world history. Der Spiegel reports that a declaration of intent
was signed this week between German-based developer Notus Energy, the
Ukrainian government and electricity transmission system operator
Ukrenergo, to build an up to 1,000MW wind farm, capable of supplying power
to around 800,000 homes – including in the capital Kyiv.
Renew Economy 13th Sept 2023
Endless energy use needed for endless data storage – so, small nuclear reactors for Sweden
Nuclear-powered campus in Sweden will power data centers
Small modular player Kärnfull Next plans commercial campus at Nyköping
September 11, 2023 By Peter Judge
Swedish nuclear company Kärnfull Next has announced plans for a campus of small modular reactors (SMRs) on the Swedish coast, which will power data centers.
The company plans to build the campus at a site in Nyköping, on the east coast of Sweden, where nuclear software firm Studsvik currently operates test reactors. It is planned to come on stream in 2030.
DCD has asked Kärnfull for more details, including the type of data center partners the company hopes to engage with…………………………………………
The company is still checking on aspects such as financing, permitting, and the possibility of power purchase agreements with power off-takers, and expects to finalize some decisions on all that towards the end of 2024……………………………………………………………. https://www.datacenterdynamics.com/en/news/nuclear-powered-campus-in-sweden-will-power-data-centers/
Windfarm bid withdrawn after Ministry of Defence raises nuclear testing station concerns
Midlothian View, by Local Democracy Reporter, Paul Kelly, Wednesday September 13th 2023
A bid for a domestic windfarm in Hawick has been withdrawn after the Ministry of Defence (MoD) raised concerns over its potential impact on a nearby nuclear testing station.
Scottish Borders Council received a planning application for the erection of a 10.4m high turbine on land south east Of Wynburgh Cottage at Langburnshiels.
But the MoD objected to the application due to its potential impact on the Eskdalemuir Seismological Recording Station.
The normally unmanned station was established by the UK Atomic Energy Authority in 1962 as the British contribution to an international network intended to identify and locate underground nuclear tests and, later, monitor compliance with the Comprehensive Nuclear Test Ban Treaty…………………………more https://www.midlothianview.com/news/windfarm-bid-withdrawn-after-mod-raises-nuclear-testing-station-concerns
Could new nuclear kill one of the world’s most promising offshore windmarkets?
Sweden is slated to host some of the biggest projects at sea
globally but its government is talking up the virtues of atomic power,
writes Bernd Radowitz.
Recharge 5th Sept 2023
How a nuclear disaster spurred Fukushima to become a renewables leader
Japan Times, BY FRANCESCO BASSETTI, MINAMISOMA, FUKUSHIMA PREF. – 5 Sept 23
As you reach the coast on Fukushima Prefectural Route 74, which runs between the towns of Minamisoma and Soma, scenes typical of the Japanese countryside — rice paddies and hills blanketed by lush green forests — undergo a swift transformation.
Now, expanses of metal, glass and silicon shimmer in the midday sun, stretching out to a horizon dotted with four white wind turbines, blades humming as they turn in the summer breeze.
Following the 2011 triple disaster — and the subsequent cratering of support for nuclear energy — Fukushima Prefecture has positioned itself at the forefront of Japan’s low-carbon transition.
Few projects better exemplify that than the Minamisoma Mano-Migita-Ebi solar power plant, which was the largest in Fukushima Prefecture until 2019 and is made up of 220,000 solar panels that, if laid end to end, would cover 350 kilometers — roughly the distance between Nagoya and Tokyo. The panels can generate up to 60 megawatts of electricity, enough to power 20,000 households.
Because of projects like the Minamisoma facility, Fukushima Prefecture has claimed the crown as the Tohoku region’s leader in cumulative solar power generation since 2013, and this is a direct consequence of the reconstruction policies that were put in place after the March 2011 earthquake, tsunami and nuclear disaster.
But today, grid connection issues, opposition by incumbent energy companies and a return to nuclear energy in some parts of the country are slowing progress in Fukushima and beyond. In 2022 almost 80% of the increase in total electricity generation in Japan came via fossil fuels — a worrying signal that, although renewable energy generation continues to increase, it is not keeping up with the pace of electrification.
Renewable recovery
Particularly in the coastal areas of Fukushima Prefecture, solar panels have a strong presence: They cover fields, occupy clearings that have been carved out of forests and hillsides, and rest on the rooftops of houses. Cars and trucks brandishing the names of the companies that operate them are a regular feature as they carry equipment and workers along well-kept roads…………………………………………………………………………………………………………………….
“Recovery plans have always been tied to developing a society that is no longer dependent on nuclear power,” says Masaki Moroi, deputy director of Fukushima Prefecture’s Energy Division.
By the end of 2021, Fukushima Prefecture had covered 47% of its energy demand with renewables, compared with just 23.7% in 2011. That’s a particularly impressive feat when compared with Japan’s national average of just 22.7% in 2022.
“Fukushima took the lead after 2011 because of its direct experience with disaster and clear commitment by policymakers to quit nuclear energy and back renewables,” says Hikaru Hiranuma of the Tokyo Foundation for Policy Research.
According to Hiranuma, the single most influential policy in the initial boom in renewable energy was the introduction of a feed-in-tariff program by the Ministry of Economy, Trade and Industry in July 2012………………………………………………………………………………………..
Beyond Minamisoma, Fukushima Prefecture implemented policies promoting renewable energy projects in areas affected by the tsunami and nuclear fallout where there were high rates of abandoned land………………………………………………………………………………………………………………………. more https://www.japantimes.co.jp/environment/2023/09/05/fukushima-renewable-energy-leader/
Focus on renewables, not nuclear, to fuel Canada’s electric needs
Relying on nuclear power goes against the evidence. The smart money is on renewables. Solar and wind energy make much more sense.
Policy Options, by Martin Bush, September 1, 2023
The demand for electricity continues to rise as countries transition to an electrified economy. To ensure an adequate and reliable supply during peak hours, governments must decide which energy technologies should be prioritized and developed to help with this transition.
Nuclear power is certainly in the running for providing this essential service, but it’s not the best option. Refurbishing aging CANDU reactors and investing in unproven nuclear technology, such as small nuclear reactors (SMRs), will waste money that could otherwise be invested in renewable energy solutions.
That’s where the smart money is – renewables – and all the evidence points to why. Electricity from nuclear energy is too expensive.
According to the World Nuclear Industry 2022 Status Report, nuclear energy’s share of global electricity generation in 2021 was 9.8 per cent – its lowest level in four decades – and substantially below its peak of 17.5 per cent in 1996.
Nuclear energy is being outpaced by non-hydro renewables, which in 2021 increased their share of global power generation to 12.8 per cent.
Between 2009 and 2021, utility-scale solar energy costs plummeted by 90 per cent, while similar wind energy costs dropped by 72 per cent. In contrast, nuclear costs increased by 36 per cent.
The cost of electricity generated by solar and onshore wind is in the range of 2.4 to 9.6 U.S. cents per kilowatt hour, (¢/kWh) while the cost of electricity from nuclear is estimated as anywhere between 14 and 22 ¢/kWh. It’s not even close.
In 2021, total investment in non-hydro renewable electricity capacity reached a record US$366 billion, 15 times the reported global investment in nuclear power plants of US$24 billion. Investments in solar energy were 8.5 times and wind six times the investments in nuclear energy.
Globally, the cost of renewable-produced electricity is now significantly below not only nuclear power but also gas. According to an analysis by Bloomberg New Energy Finance, wind and solar power are now the cheapest form of new electricity in most countries, including Canada. Bloomberg anticipates it will be more expensive to operate existing coal or fossil gas power plants within five years than to build new solar or wind farms.
Unsurprisingly, it is wind farms and large solar installations that are being built in record numbers……………………………………………………………………………………… more https://policyoptions.irpp.org/magazines/september-2023/renewables-not-nuclear-electric-canada/
French energy regulator: Nuclear alone not enough for carbon neutrality
“renewable energies to be brought on stream as quickly as possible, as there will be no new reactors in operation by 2035” to meet the need to decarbonise the energy mix.
By Clara Bauer-Babef and Paul Messad | EURACTIV.fr 27 Aug 23 https://www.euractiv.com/section/politics/news/french-energy-regulator-nuclear-alone-not-enough-for-carbon-neutrality/
If France is to achieve carbon neutrality by 2050, it must integrate renewables into its energy mix, according to the head of the country’s energy regulator, RTE, who believes nuclear power alone will not be enough.
As part of its EU targets, France has pledged to become carbon neutral by 2050 and contribute to the bloc’s efforts to cut greenhouse gases by 55% by 2030.
“To achieve carbon neutrality by 2050, nuclear power alone will not be enough,” said Xavier Piechaczyk, Chairman of RTE, on France Inter radio on Saturday.
Instead, France needs to diversify further its energy mix, which is currently 40% nuclear, 28% oil, 16% natural gas, 14% renewables and 2% coal, according to the French Ministry for Ecological Transition.
All the more so as “energy consumption will fall, but electricity consumption will rise to replace fossil fuels”, with a 25% increase in decarbonised electricity, writes RTE in its reference report on the French energy mix in 2050.
As such, Piechaczyk calls for “renewable energies to be brought on stream as quickly as possible, as there will be no new reactors in operation by 2035” to meet the need to decarbonise the energy mix.
France plans to build six new small nuclear reactors (EPR), although these will not be operational until 2035. Construction for the first reactor is only set to start in 2027.
“France is struck by a pathology, which is to spend its time arguing between nuclear versus renewable: it’s not the first question to be asked”, Piechaczyk said.
Piechaczyk referred in particular to the conflict between the radical left and ecologists, who are opposed to nuclear power, and the presidential majority and the right, supported by the Communists, who favour the development of nuclear power.
(Paul Messad & Clara Bauer-Babef | EURACTIV.fr)
Power-starved North Korea turns to solar energy to keep the lights on
1North Korea is increasingly turning to solar power to help meet its energy
needs, as the isolated regime seeks to reduce its dependence on imported
fossil fuels amid chronic power shortages. Prices of solar panels have
dropped in recent years thanks to an influx of cheap Chinese imports and a
rise in domestic assembly of panels within North Korea, according to the
Stimson Center think-tank in Washington.
This has allowed many North
Koreans to install small solar panels costing as little as $15-$50,
bypassing the state electricity grid that routinely leaves them without
reliable power for months. Larger solar installations have also sprung up
at factories and government buildings over the past decade.
FT 27th Aug 2023
https://www.ft.com/content/cff0639f-e095-465c-a6e9-3e418a7e30cf
Degrowthers Gain Support as Planet Cooks. Can They Ally With Green New Dealers?
Degrowth and its opponents recognize the necessity of mass movements and system change to address the climate emergency. By Gareth Dale , TRUTHOUT 27Aug 23
egrowth, a movement advocating reductions in energy and resource use across the Global North, is finding new audiences. In Japan, Kohei Saito’s degrowth manifesto Capital in the Anthropocene became a bestseller. In Europe, members of the European Parliament sponsored a three-day “Beyond Growth” conference. In the U.S., the socialist journal Monthly Review has come around to degrowth. In recent weeks, the topic has been covered by New Statesman, The New Yorker, Jacobin, the British Medical Journal and The New York Times, among others.
Writing in New Statesman, economist Hans Stegeman proposes that the debates between degrowth and green growth are already outdated. In the present era of low GDP growth, there is no meaningful choice between the two. Instead, at least in the absence of any radical reordering of society, economies are by default transitioning toward a post-growth model.
In The New Yorker, environmental activist Bill McKibben presents degrowth as a call to reduce consumption, in contrast to the Green New Deal (GND), which emphasizes production. Evenhandedly, he opposes “endless” growth but parts company with degrowthers when they, citing the ecological costs of all the mining required, refuse to support “an all-out push for electric vehicles (EVs), heat pumps, solar panels and wind turbines.” Why not do both, he asks: Invest in renewables and EVs while also restricting “wasteful consumerism”?………………………………………………………………………………………………………………………more https://truthout.org/articles/degrowthers-gain-support-as-planet-cooks-can-they-ally-with-green-new-dealers/?utm_source=Truthout&utm_campaign=c6c53059c2-EMAIL_CAMPAIGN_3_20_2023_13_41_COPY_05&utm_medium=email&utm_term=0_bbb541a1db-c6c53059c2-650192793&mc_cid=c6c53059c2&mc_eid=73e1cd43d0
The digital data industry is an energy and water guzzling climate disaster.
Energy-hungry AI could pose a challenge for data centre ESG
The Age By Tim Biggs, August 5, 2023
Sustainability experts have warned of a crunch ahead for the booming data centre industry, as increasing energy usage amid demand for new artificial intelligence-powered technologies crosses paths with a hotter, drier climate.
Data centres are becoming an asset-class part of infrastructure, as AI powers a boom in growth and demand for data while investment managers and superannuation funds increase their stakes. Late last year, US asset manager DigitalBridge and Melbourne-based IFM investors acquired data centre leader Switch for $US11 billion ($16.83 billion).
Meanwhile the International Energy Agency estimates that software-related activities currently account for about 5 per cent of global greenhouse gas emissions, which may rise to 14 per cent by 2040. Data centres and transmission networks specifically account for around 1 per cent, but some estimates predict that to rise rapidly to more than 3 per cent in a matter of years.
……….. a recent report from the University of Technology Sydney’s Institute for Sustainable Futures suggested the data centre industry was “exposed to significant ESG (environmental, social, and corporate governance) risks that have largely escaped our collective attention”, including the increasing need for cooling combined with huge demands for data.
“This all comes at the same time as we’re seeing a shift in our weather patterns. We’re heading for days of peak heat events,” said researcher Gordon Noble, who led the UTS study.
“So the challenge is, we have 45-degree days in the western suburbs of Sydney and Melbourne, where data centres will need to increase the demand for energy to ensure that they’re delivering their services. At a time when households will also be wanting to make sure that they’ve got cool homes.”
The study, which was commissioned by data centre technology provider Pure Storage, also surveyed experts in charge of sustainability at their organisations, of whom only five per cent said they were getting detailed sustainability information from their data centre provider.
As record heat waves affect parts of Europe, recent figures have shown data centres in Ireland consume 18 per cent of the country’s electricity, around the same as homes. Ireland is the European home of several tech giants, but some of the nation’s politicians have said the power-hungry data centres put pressure on the national grid, increase electricity prices for everyone and will make it impossible to hit emissions targets.
“From an Australian perspective, data centres need to be on the sustainability agenda,” Noble said.
“It’s probably fair to say other issues have been in the limelight. But we’ve got increasing demand for data, which is only going to exacerbate because of the investments that we’re seeing in new technology like AI. We need to understand where we’re located, particularly in the context of El Nino.”
RMIT University school of computing dean Professor Karin Verspoor said AI – like blockchain technology and cryptocurrency mining before it – was getting a lot of attention from developers and investors, but there was not enough discussion of the exponentially increasing amounts of energy it used.
Some researchers have calculated that training a single medium-sized generative AI model could consume electricity and energy equivalent to 626,000 tons of CO2 emissions, around what five American cars would use throughout their lifetimes, including manufacturing.
“These are huge models, and they’re only getting bigger, and there’s more of them. Massive quantities of data are involved in training,” Verspoor said, adding this was on top of the ongoing energy costs once users are hitting data centres constantly to use the generative AI product.
“And it’s not just energy actually, it’s also water because water is used often to cool the data centres. So, there are these sorts of secondary climate impacts.”
While Verspoor agreed data centre providers could help mitigate the impacts with more energy-efficient technologies and offsets, she said the developers and consumers of AI products also had to take some responsibility…………………………………….
AI company Hugging Face has run experiments in low-power AI development using nuclear energy, but still found its development of a large language model produced around 50 metric tons of carbon dioxide emissions, or the equivalent of an individual taking 60 flights between London and New York. It estimated that OpenAI, when developing its last-generation ChatGPT model, may have produced 500 metric tonnes…………………….. more https://www.theage.com.au/technology/energy-hungry-ai-could-pose-a-challenge-for-data-centre-esg-20230802-p5dtad.html
For Scotland, energy is our best argument for independence
,,,,,,,,,,, the Government’s obsession with nuclear power – the most expensive method ever devised for generating electricity. The Government claims nuclear is renewable. It isn’t. At current rates, there is maybe 90 years’ supply of uranium left – less if we use more. The Government claims it is clean. It isn’t. The toxic radioactive waste needs to be isolated from living things, including us, for centuries. The Government claims it provides energy security. It doesn’t. The UK has no uranium. Yet the UK Government, supported by its Labour opposition, is preparing to rapidly expand nuclear power at vast expense to the taxpayer.
The National, By Tommy Sheppard, 6th August 23
SOMETIMES I wonder what it’s going to take to make the UK Government take climate change seriously. We’ve spent this miserable, sodden Scottish summer watching holiday destinations in the Mediterranean combust. The news is full of floods and typhoons. Records are broken every day. Across the world people are drowning and burning.
All of this is going to get worse. Beyond the headlines, a catastrophe unfolds as the ice melts and sea levels rise. Famine and more mass migration result. The climate emergency is here now.
……………………………….We have created the climate crisis. And we can fix it, but only if our political leaders are prepared to take hard decisions and apply a degree of honesty and common sense which has so far escaped them.
……………….. We need to stop burning oil and gas……………..
Let’s start with new oil and gas exploitation. Of all the utter bollocks talked by Sunak’s government, this takes the biscuit. Despite committing to a policy of reducing oil and gas, we’re told it’s okay to massively increase drilling and extraction in the North Sea. This is an affront to common sense. The dogs in the street know you cannot reduce something by having more of it.
To be clear, what is now being considered is massive. Bigger than before…………………………
And then we’re told that if the UK does not allow this, some other country will, so it’s futile not doing it. This counsel of despair has been rejected by – among others – the Tory chair of the Climate Change Committee, Lord Deben,……………………….
Let’s be clear, the best way to capture carbon is to plant trees. Photosynthesis is how CO2 is taken out of the atmosphere. And one of the factors in rising CO2 levels is that these islands, like most of the world, have lost half the tree cover they used to have.
CARBON capture can never replace nature in sequestering carbon from the atmosphere. …………………………………………………………………………………
We can’t have a conversation about the deceitfulness of UK energy policy without discussing the Government’s obsession with nuclear power – the most expensive method ever devised for generating electricity. The Government claims nuclear is renewable. It isn’t. At current rates, there is maybe 90 years’ supply of uranium left – less if we use more. The Government claims it is clean. It isn’t. The toxic radioactive waste needs to be isolated from living things, including us, for centuries. The Government claims it provides energy security. It doesn’t. The UK has no uranium. Yet the UK Government, supported by its Labour opposition, is preparing to rapidly expand nuclear power at vast expense to the taxpayer.
……………………………………………. More than most countries, Scotland is blessed with renewable energy sources in abundance. We just need the political and financial commitment to develop them at a scale never before seen. That commitment won’t come from this UK Government, nor it seems the next one.
So, perhaps more than any other area of policy, the need for Scotland to have control over its energy production makes a compelling case for our political independence. https://www.thenational.scot/politics/23703825.tommy-sheppard-energy-best-argument-independence/
Military interest in nuclear-powered space travel, but solar-powered is just as good, -and safer.
2 Government, Industry Explore Nuclear, Solar Space Engines
COLORADO SPRINGS, Colorado — More commercial and military activity is taking place in space, and the Defense Department and industry are investing in emerging propulsion technologies to move systems in orbit faster, farther and more efficiently.
……………………………………..In 2021, the Defense Advanced Research Projects Agency selected Lockheed Martin as one of three prime contractors — along with General Atomics and Blue Origin — for Phase 1 of its Demonstration Rocket for Agile Cislunar Operations, or DRACO, program to showcase the potential of a nuclear thermal propulsion system in space, a DARPA release said.
This January, NASA announced it had partnered with DARPA on the DRACO program, describing a nuclear thermal rocket engine as “an enabling capability for NASA crewed missions to Mars.” The goal is to demonstrate the system in orbit in fiscal year 2027, with the Space Force providing the launch vehicle for the DRACO mission, a DARPA statement said.
The program is about to enter Phase 2, which “will primarily involve building and testing on the non-nuclear components of the engine” such as valves, pumps, the nozzle and “a representative core without the nuclear materials in it,” DARPA’s program manager for DRACO Tabitha Dodson said during a panel discussion at the Space Foundation’s Space Symposium in April. Dodson said then a Phase 2 decision is “quite close.” However, at press time in mid-July, no contracts have been awarded.
…………………………………“There are no facilities on Earth that we could use for our DRACO reactor’s power test … so we’ve always baselined doing our power test for the reactor in space,” Dodson said. Once in space, DARPA will “very gradually” ramp up the system to “full power thrust,” she said…………………………………………………………………………………………………………………………………………
Despite DARPA’s commitment to safety, nuclear propulsion systems face an uphill battle getting deployed on spacecraft at scale, said Joel Sercel, founder and CEO of TransAstra, a space technology company.
………………………………………………………………………………..In May, the Space Force awarded TransAstra a Phase One Small Business Innovation Research contract to explore new applications for the company’s propellant-agnostic Omnivore thruster.
The Omnivore thruster uses solar reflectors to focus sunlight onto a solar absorber, which then superheats the system’s propellant to generate thrust “typically six times faster and eight times cheaper than electric systems,” a company release said.
Additionally, TransAstra calculated an Omnivore thruster “using liquid hydrogen propellant … will perform similarly to nuclear rockets, but without nuclear materials, costs or risk.”
Sercel said Omnivore has “80 percent of the performance of nuclear at 1 percent of the cost.” The system is essentially nuclear powered, “but the nuclear reactor in question is the fusion reactor at the center of the solar system called the Sun,” he added.
“The nice thing about nuclear reactors is that you have a small, compact reactor versus large deployable solar reflectors, but the basic performance of solar thermal rockets and nuclear rockets is about the same,” he said. And with Omnivore “you don’t have all these safety concerns and radioactive material and reactor control issues and so on. So, we think it’s a much more practical approach.”
Omnivore could have multiple mission applications for the Defense Department, Sercel said. Using liquid hydrogen propellant, the thruster “can deliver hundreds of kilograms” of spacecraft to geosynchronous orbit “on small launch vehicles, and the Space Force seems to be very excited about this,” he said. The system could also deliver spacecraft weighing more than 100 kilograms to cislunar space, he said.
Additionally, TransAstra has an Omnivore variant that uses water as the propellant, the solar absorber superheating the water vapor and releasing the gas through a nozzle to generate thrust.
The water-based variant can be placed on the company’s Worker Bee small orbital transfer vehicles, about 25 of which can fit on a single Falcon 9 rocket, Sercel said.
“Each [Worker Bee] could deliver up to six small [satellites] to their orbital destinations. So, we can deliver a full constellation of 100 small or micro [satellites] to all different inclinations, and you would get global coverage in one launch.”…………………………………………………………more https://www.nationaldefensemagazine.org/articles/2023/7/31/government-industry-explore-nuclear-solar-space-engines
1 This Month
23 April – WEBINAR – Why new nuclear reactors are the wrong tools for decarbonization Thursday, April 23 • 1 AM – 2 AM AEST
Pine Ridge Uranium is the real threat, not Tehran- Tell Burgum: Stop the Extraction.
Chernobyl: The Lost Tapes – A good documentary on Chernobyl on SBS available On Demand for the next 3 weeks– https://www.sbs.com.au/ondemand/tv-program/chernobyl-the-lost-tapes/2352741955560
To see nuclear-related stories in greater depth and intensity – go to https://nuclearinformation.wordpress.com
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