Green Energy
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solar PV → heat pump → water heater; direct, no A/C or intermediate components. Practical? Feasible?
Heat pump water heaters already exist. These are hybrid things where a traditional electric water heater is fitted with a heat pump. The heat pump can increase the water temp but cannot deliver enough, so heating elements are still needed to reach a usable temp.
I’m wondering if that design can be improved on this way: instead of powering the heat pump from the wall, the heat pump can be connected directly to a PV. I think that would be more efficient and cheaper because PV output is not normally directly usable. IIUC, it’s variable D/C which must be regulated and/or inverted to A/C involving more hardware, conversion, and waste. But exceptionally, I’ve heard that a PV can directly power a compressor with no middleware. Any reasons this would be infeasible or uninteresting?
Of course the tank still needs wall power for the heating elements, but would use less wall power and entail less conversion loss.
- solar.lowtechmagazine.com How to Escape From the Iron Age?
We cannot lower carbon emissions if we keep producing steel with fossil fuels.
The link is from the-most-solarpunk-website and is mostly about steel in general, but I wanted to pull out that one fact.
Wind and solar energy are not "good for the environment"; they pollute; it's just that we hope they pollute less than the alternative. One major reason they pollute is because they require a lot of steel to build. But the household-scale or village-scale ones use less
de Decker is citing: Topham, Eva, et al. “Recycling offshore wind farms at decommissioning stage.” Energy policy 129 (2019): 698-709.
- • 96%www.ess-news.com China connects its first large-scale flywheel storage project to grid - Energy Storage
The 30 MW plant is the first utility-scale, grid-connected flywheel energy storage project in China and the largest one in the world.
- • 95%www.pv-magazine.com New solar carport opens at 4,300 meters on Mount Everest
Chinese module maker Aiko Solar says it has built a 150 kW off-grid solar carport at an altitude of 4,300 meters on Mount Everest, featuring 645 W bifacial dual-glass modules and 200 kWh of battery storage.
- • 97%theconversation.com Wind powers a record summer for renewable energy in Britain
A blustery August saw gas generation more than halve compared with 2023.
- • 93%www.tucsonsentinel.com Interior Sec touts 'New ERA' loans to Southern Az electrical coops
Agriculture Secretary Tom Vilsack highlighed more than $600 million in recent financing to support renewable energy in rural Arizona, including $83.5 million to Trico Electric Cooperative to expand battery storage and increase the reliability of electricity for residents on the Pascua Yaqui Reservat...
cross-posted from: https://tucson.social/post/1067292 > > > > Agriculture Secretary Tom Vilsack highlighed more than $600 million in recent financing to support renewable energy in rural Arizona, including $83.5 million to Trico Electric Cooperative to expand battery storage and increase the reliability of electricity for residents on the Pascua Yaqui Reservation. >
- www.pv-magazine.com India’s solar pump market set to expand
Gopal Kabra, the founder and CEO of GK Energy, speaks to <b>pv magazine</b> about India's solar pump market, its key drivers, and future outlook.
- https:// www.ft.com /content/aa3c8928-e66f-4006-ad90-d2faa72c99d1
This post uses a gift link which may limit the number of times it can be loaded. When it runs out, there is an archived copy of the article
Renewable Energy has many parts, and some of them can do jobs that others cannot do. It is important to work together to bring the best renewable Energy to the world that we can hope to achieve.
This diagram represents a short overview over different elements of a renewable energy network, and what the different parts can do, and what not.
For example, Hydropower can be both an energy source (flowing water through a turbine) but also a means of energy storage (by keeping the water behind the dam). Renewable Biomass can be stored well, but can also be turned into a renewable source of energy. Batteries can store energy well, but cannot produce energy.
Thoughts, comments, likes :-)
- • 98%www.canarymedia.com US solar manufacturing capacity has quadrupled thanks to climate law
The Inflation Reduction Act has sparked a boom in domestic solar panel manufacturing, though the U.S. still depends on China for certain steps of the supply chain.
- • 100%www.canarymedia.com Here’s a blueprint for building virtual power plants in every state
Utilities could save billions by tapping customers’ solar systems, EVs, and electric appliances. These firms and advocates have a plan to make it happen.
- aeon.co Could we learn to love the wind turbine as we did the windmill? | Aeon Essays
Windmills were once just machines on the land but now seem delightfully bucolic. Could wind turbines win us over too?
- www.theguardian.com How China and a tariffs row cast a shadow over booming US solar power
The source of new renewable energy is also a battleground over China’s cheap exports of panels that has split US firms
- www.carbonbrief.org In-depth: China’s finance for African renewables rebounds after two-year lull - Carbon Brief
New data reveals a rebound in Chinese financing of renewable energy projects in Africa in...
- youtube.com - YouTube
Auf YouTube findest du die angesagtesten Videos und Tracks. Außerdem kannst du eigene Inhalte hochladen und mit Freunden oder gleich der ganzen Welt teilen.
- • 100%electrek.co Massachusetts & Rhode Island make history with largest offshore wind projects yet
Massachusetts and Rhode Island have selected 2,878 megawatts (MW) of offshore wind power in the region’s first-ever coordinated procurement.
- www.nytimes.com Solar Farms Have a Superpower Beyond Clean Energy
The sites fight climate change and can help with another global crisis: the collapse of nature. But so far, efforts to nurture wildlife habitat have been spotty.
- • 98%climate.benjames.io Solar will get too cheap to connect to the power grid.
The cost of solar panels is plummeting, and this will flood the power grid with cheap electricity. But that’s just Act 1. We won’t stop building solar at the limits of the grid - we’ll build a lot more. This post explains why we'll keep building more,
Only evening hours actually, but pretty cool idea.
- • 100%www.kpbs.org California energy grid tries to adapt as state moves to renewables
The California energy grid is balancing renewable supply while an energy test bed at UC San Diego looks for ways consumers can optimize it.
- wapo.st How ancient healing hot springs could fuel a clean energy future
One hot spring town shows how Japan could turn its underground cauldron of geothermal heat into clean energy, without risking its centuries-old onsen tradition.
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- hackaday.com Swiss Researchers May Have Solved Hydrogen Storage
If you follow the world of clean energy, you will probably have read all about the so-called hydrogen future and the hydrogen economy. The gas can easily be made from water by electrolysis from gre…
Not only are nuclear build outs typically associated with weapons grade enrichment by design (yes I know they in theory don't have to be, but all the US ones do) but of course the US has to further exploit and steal from the indigenous to do so. Nuclear power is the golden calf of the green energy movement.
- papers.ssrn.com The Impact of Large-scale Solar Development on Farmland Values: Evidence from New York State
The renewable energy transition could have important land use implications in the US and beyond. Large-scale solar energy projects compete for land with agricul
- • 99%www.cbsnews.com U.S. is seeing a boom in clean energy jobs
Hiring across America's green energy sector is surging, a new Department of Energy report shows.
- www.canarymedia.com Chart: Solar power is shattering global records
A staggering 428 gigawatts of solar capacity was installed last year — more than in the previous two years combined.
- • 100%www.bbc.com New Shetland windfarm could power nearly 500,000 homes
The islands are the windiest part of the UK, which means it will be rare for the turbines not to be spinning.
- • 97%grist.org Oakland’s new school buses don’t just reduce pollution — they double as giant batteries
A new fleet of buses can send power back to the grid, stabilizing it instead of straining it.
- • 97%renewablerevolution.substack.com The Rise of Batteries in Six Charts and Not Too Many Numbers
The unstoppable rise of batteries is leading to a domino effect that puts half of global fossil fuel demand at risk
- https:// messaging-custom-newsletters.nytimes.com /dynamic/render
Title taken from the article version of this newsletter; posting the newsletter version because that has no paywall.
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Connections confirmed between ‘grassroots’ Ohio solar opposition and dark-money natural gas group
ohiocapitaljournal.com Connections confirmed between ‘grassroots’ Ohio solar opposition and dark-money natural gas group • Ohio Capital JournalThe leader of a local anti-solar energy group admitted to Ohio regulators last week that a well-connected natural gas executive is among the group’s largest donors.
- • 70%electrek.co Tesla is now capable of producing 700,000 Powerwalls per year
Tesla is now capable of producing 700,000 Powerwalls or 10 GWh worth per year, according to a new video. The...
- energyinnovation.org Hydrogen Policy's Narrow Path: Delusions And Solutions - Energy Innovation: Policy and Technology
Hydrogen policy that isn't carefully designed can reverse, delay, or raise emission reduction costs while failing environmental justice goals, potentially dooming the hydrogen industry.
