Mark Z. Jacobson Profile Banner
Mark Z. Jacobson Profile
Mark Z. Jacobson

@mzjacobson

45,873
Followers
414
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476
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31,267
Statuses

Prof-Civil & Env Eng; Director-Atmosphere/Energy Prog; Research-climate, air pollution & clean/renewable energy; Cofounder-Solutions Project/100% Movement

Stanford University
Joined February 2010
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@mzjacobson
Mark Z. Jacobson
5 years
The scientific bases for all U.S. state laws and proposed laws to go to 100% renewable, clean, 0-C, and/or 0-emissions & the #GreenNewDeal The only way to do any of these is with #WindWaterSolar
@mzjacobson
Mark Z. Jacobson
6 years
The scientific basis for #California 's #SB100 (Effectively #100 % renewable electricity by 2045) & Exec Order B-55-18 (effectively 100% renewable all-energy by 2045 to eliminate air pollution+GHGs) #GCAS2018 @GovPressOffice @StanfordEnergy @StanfordWoods @100isNow @350 @TheRE100
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@mzjacobson
Mark Z. Jacobson
5 years
This is quite spectacular The largest electric vehicle on Earth, a monster dump truck, never has to recharge because it moves uphill empty but downhill full, and regenerative braking with a full load provides enough electricity for it to go uphill again.
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@mzjacobson
Mark Z. Jacobson
4 years
Who says batteries can't replace natural gas for peaking, gap-filling? “Big battery” in #Australia becoming a bigger nightmare for fossil fuel power generators as it saved consumers $76 million in 2019, an increase from $26 mil in 2018 @Tesla @Teslarati
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@mzjacobson
Mark Z. Jacobson
1 year
Costa Rica exceeds 98% renewable electricity generation for the eighth consecutive year Meets 99.25% of production and 98.68% of demand with RE #WindWaterSolar #WWS
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@mzjacobson
Mark Z. Jacobson
1 year
If this cost pans out, little barrier remains for the world to go to 100% #WindWaterSolar by 2035 Iron-air batteries ($20/kWh), about 1/5th-1/10th cost of lithium-ion batteries ($100-$200/kWh) for grid elec storage, set for commercial production in 2024.
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@mzjacobson
Mark Z. Jacobson
6 months
Portugal just ran on 100% #WindWaterSolar for 6.2 days in a row, Oct. 31-Nov. 6, 2023 "149 consecutive hours in which ​'energy from renewable sources exceeded the industrial and household consumption needs across the country'" @CanaryMediaInc #WWS
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@mzjacobson
Mark Z. Jacobson
1 year
At least one country now realizes how easy it is to replace fossils+nuclear France legislates 10-nuclear-reactors-worth of solar to cover parking lots with more than 80 spaces within 3-5 yr @electrekco @ProfStrachan @BrianVad @ChristianOnRE #WWS
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@mzjacobson
Mark Z. Jacobson
1 year
Win-win Building solar PV at a specific height above crops can reduce surface temperatures by up to 10 °C, vs panels on ground Solar panels handle heat better when they’re combined with crops @AnthropoceneMag
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@mzjacobson
Mark Z. Jacobson
2 years
Switching The World To Renewable Energy Will Cost $62 Trillion, But The Payback Would Take Just 6 Years @cleantechnica
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@mzjacobson
Mark Z. Jacobson
4 years
As a researcher on #climate , #airpollution and solutions to these horrendous problems, I can state that @SenSanders plan for tackling these problems will be far more effective than those of @JoeBiden . We have no time to waste on weak solutions @DNC @sunrisemvmt @AOC #GreenNewDeal
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@mzjacobson
Mark Z. Jacobson
2 years
Hawaii Gets Its Last Shipment of Coal, Ever It’s the end of a dirty era in #Hawaii . The state’s last-ever #coal shipment arrived in Oahu on Wednesday. In 2014, the state pledged to get to 100% renewable energy by 2045, the first state to pledge
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@mzjacobson
Mark Z. Jacobson
5 months
Batteries starting to replace fossil gas plants worldwide "Giant batteries that ensure stable power..becoming cheap enough to make developers abandon projects for gas-fired generation" 1st half 2023 "68 gas projects put on hold or cancelled globally"
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@mzjacobson
Mark Z. Jacobson
10 months
Given that scientists who study 100% renewable energy systems are unanimous that it can be done, why do we hear daily on twitter and everywhere else by those who don't study such systems that it can't be done?
@mzjacobson
Mark Z. Jacobson
10 months
Although 100s more exist, here are 89 papers by 37 groups & >210 authors finding 100% renewable grids feasible worldwide without fossils, nuclear, CCUSP, blue H2 @ChristianOnRE @BrianVad @ProfStrachan @AukeHoekstra @ChristineMilne @howarth_cornell
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@mzjacobson
Mark Z. Jacobson
4 months
This fact has not changed during the year. We don't need miracle techs to address climate. We need to deploy, deploy, deploy existing techs as fast as possible. ‘No miracles needed’: Prof Mark Jacobson on how wind, sun and water can power the world
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@mzjacobson
Mark Z. Jacobson
11 months
World's largest windfarm (1.53 GW), and built without subsidy, took just 2 years for construction and will be generating power before end of 2023. Consists of 139 11-MW turbines with 200-m rotor diameter blades @WindEurope @USCleanPower @SiemensGamesa
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@mzjacobson
Mark Z. Jacobson
11 months
For lawmakers: $35 billion buys either... 2.23 GW nuclear that takes 18 years between planning and operation or.... 54.1 GW in wind that takes 1-3 years -->wind provides 24.6x the peak output and 10x the annual output for the same money, and 15-17 years faster
@mzjacobson
Mark Z. Jacobson
11 months
Global wind turbine orders surge 27% to record 23.5 GW ($15.2 b) Q1 2023 That's $0.65/W on average New nuc? $15.5/W (24x that) @TheNationalNews @GWECGlobalWind @WindEurope @USCleanPower @ProfStrachan @BrianVad @ChristianOnRE @howarth_cornell @CKemfert
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@mzjacobson
Mark Z. Jacobson
21 days
'It's wild that this isn't getting more news coverage' California has set a benchmark for renewable energy, with wind, solar & hydro providing 100% of the state's energy demand for a part of 25 out of last 32 days (& counting). @the_cool_down_
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@mzjacobson
Mark Z. Jacobson
3 years
Joint declaration by 46 scientists: "A world based on 100% renewables is possible and we are able to transform the energy system fast enough to avoid climate catastrophe" @EickeRWeber @BrianVad @HJFell @ChristianOnRE @tonyseba @MichaelEMann @SvenTeske
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@mzjacobson
Mark Z. Jacobson
3 years
And please put the @EPA back on track and unleash the potential of U.S. offshore #wind power
@JoeBiden
Joe Biden
4 years
Today, the Trump Administration officially left the Paris Climate Agreement. And in exactly 77 days, a Biden Administration will rejoin it.
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@mzjacobson
Mark Z. Jacobson
11 months
About time! UK bans ‘misleading’ fossil fuel ads that overemphasize renewables "adverts from Shell, Repsol & Petronas were banned...for touting investments in renewables without mentioning the extent of each company’s polluting activities" @ProfStrachan
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@mzjacobson
Mark Z. Jacobson
2 years
Portugal bets all on renewables after abandoning coal Planning for 80% renewable electricity by 2026 @FRANCE24 #WWS #WindWaterSolar
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@mzjacobson
Mark Z. Jacobson
5 years
100% RE NY is almost law: NY lawmakers reach deal to go 70% renewable electricity by 2030 & 100% by 2040 while eliminating 85% of all-sector GHG emissions by 2050 & offsetting rest by 2050. @100isNow @howarth_cornell @joshfoxfilm @timnose @MarkRuffalo
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@mzjacobson
Mark Z. Jacobson
8 months
The solution is simple: Electrify everything (eliminate combustion); Provide the electricity with #WindWaterSolar ; Deploy what we have as fast as possible; Keep our eyes on the ball (don't get distracted with weak- or non-solutions).
@mzjacobson
Mark Z. Jacobson
8 months
"We have wind, solar, geothermal, hydro, electric cars. We have batteries, heat pumps, energy efficiency. We have 95% of the technologies right now that we need to solve the problem." #NoMiraclesNeed @Daikinuk @StanfordEng @stanforddoerr @StanfordAlumni
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@mzjacobson
Mark Z. Jacobson
7 years
Victory against climate deniers and trolls: Climate scientist wins major court battle to pursue defamation claims
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@mzjacobson
Mark Z. Jacobson
4 years
Italy to make climate change a compulsory school subject
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@mzjacobson
Mark Z. Jacobson
4 years
Scotland to reach 100% renewables in time to host 2020 climate summit It's only remaining fossil source now is one gas plant. This will be superseded with Seagreen wind farm, which will power 1 million more homes @renew_economy
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@mzjacobson
Mark Z. Jacobson
11 months
Synthetic carbon capture and direct air capture are scams that increase CO2e, pollution, fossil mining & infrastructure & social cost and should not be used for any purpose CCS is ‘no free lunch’, warns climate chief
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@mzjacobson
Mark Z. Jacobson
5 years
There are now 7 countries representing 32.6 million people running on 95-113% #WWS ( #WindWaterSolar ) electricity Iceland Norway Costa Rica Albania Paraguay Uruguay Tajikistan and 2 others (55.1 million) there by 2020 Scotland Kenya
@mzjacobson
Mark Z. Jacobson
5 years
Forget 100% clean, renewable #WWS electricity. #Uruguay , so far this year, has produced 113% (67.6% hydro, 41.8% wind, 3.7% PV) of its domestic electricity from #WindWaterSolar (and an additional 10% from biomass+thermal). Excess over 100% was exported
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@mzjacobson
Mark Z. Jacobson
8 months
Battery cell prices plunge to $98.2/kWh, close to tipping point for end of internal-combustion-engine vehicles When they drop to $80/kWh, vehicle battery packs will be ~$100/kWh, low enough to clobber ICEs NCM811 may already be $82.6/kWh in China
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@mzjacobson
Mark Z. Jacobson
7 years
The age of incompetence and idiocy begins
@ggreenwald
Glenn Greenwald
7 years
Trump Picks Top Climate Skeptic to Lead EPA Transition
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Mark Z. Jacobson
7 years
Marches for Science Outdraw Donald Trump's Inauguration via @politicususa
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@mzjacobson
Mark Z. Jacobson
5 years
So much for "renewables increase natural gas" The world's largest solar-battery plant will replace two natural gas plants. Florida utility to close natural gas plants, build massive solar-powered battery #WindWaterSolar
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@mzjacobson
Mark Z. Jacobson
3 months
Gas guzzler lovers are not going to like this Electric vehicles fail less in extreme cold than fuel-powered cars
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@mzjacobson
Mark Z. Jacobson
5 months
You can't beat this coal, gas, or nuclear: World's biggest wind turbine (16 MW) installed in record-breaking 24 hours, reducing construction costs and providing clean power faster “Vital breakthrough for scaling up offshore wind potential” @ElectrekCo
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@mzjacobson
Mark Z. Jacobson
2 years
Let the bans begin! Austrian government bans the installation of natural gas boilers for air and water heating in new buildings starting in 2023 In addition, "any broken oil or coal heating systems may only be replaced by renewable heating systems" #WWS
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@mzjacobson
Mark Z. Jacobson
1 year
Gas can’t compete with wind, solar and storage, even in world’s biggest market The latest levelized cost of energy assessment by Lazard confirms that wind & solar, even “firmed” by battery storage, still beat the fossil fuel competition @renew_economy
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@mzjacobson
Mark Z. Jacobson
5 months
"We are on the right track" Almost 52% of Germany' gross electricity consumption will have been produced by renewable electricity in 2023. An increase of 5% in one year First time over 50% Goal of 80% by 2030; 100% by 2035
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@mzjacobson
Mark Z. Jacobson
8 months
So, when anyone says "we need new nuclear," just reply "investing the same money instead in solar PV produces 5.3 x the energy over 65 years" That is due to the higher capital cost (15.7 x) and longer delays between planning + operation (17-20 y vs 1-3 y) of nuclear
@mzjacobson
Mark Z. Jacobson
8 months
@herrbrendan $35 bil buys 35 GW of PV x 8760h/y x 23.2% CF in GA= 71.1 TWh/yr of PV 2.23 GW of nuc x 8,760h/y x 0.9 CF = 17.6 TWh/yr of nuc -> Vogtle has cost Georgia 53.5 TWh/y going forward, and 71.1 TWh/y for the past 15 y since Vogtle was planned 2006+PV could have started 2008
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@mzjacobson
Mark Z. Jacobson
11 months
Taiwan legislators require "all newly built, expanded, or altered structures that meet specific conditions to have rooftop solar panels incorporated into the building's design and installed"
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@mzjacobson
Mark Z. Jacobson
2 months
This drop in battery cost to below $60/kWh in 2024 will allow the wholesale transition of the world to 100% #WindWaterSolar at low cost faster than predicted @AssaadRazzouk @ProfStrachan @AukeHoekstra @ChristianOnRE @BrianVad @ChristineMilne
@AssaadRazzouk
Assaad Razzouk
2 months
World's largest EV battery maker says prices in 2024 will drop 50% to $56/kWh This is gargantuan - and will accelerate EV cars, trucks, trains, ships, planes and BESS Sit back and watch oil running for the exit by 2030 (chart via @RockyMtnInst )
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@mzjacobson
Mark Z. Jacobson
2 years
Paraguay disconnects its last fossil fuel electricity generator from the grid Now, it trulyproduces 100% clean, renewable electricity Other countries at 100% #WWS #WindWaterSolar
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@mzjacobson
Mark Z. Jacobson
5 years
#SanJose to become largest city to ban #naturalgas Council approved proposal for ordinance barring natgas in new single-family homes, low-rise multifamily buildings+detached granny flats by 2020 @HowarthCornell @joshfoxfilm @MarkRuffalo @KrapelsMarco
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@mzjacobson
Mark Z. Jacobson
4 years
History has been made. "For the first time, an aircraft that carries paying passengers took off with an electric motor." And the "fuel" cost was $6-$12 for electricity versus $300 if it were jet fuel. @FortuneMagazine
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@mzjacobson
Mark Z. Jacobson
4 years
"We have 95% of the technology we need already" to transition all energy economies of the world to clean, renewable #WindWaterSolar Electrifying everything will also reduce power demand by ~57% Nuclear, biofuels & carbon capture will not help
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@mzjacobson
Mark Z. Jacobson
7 months
Wow! World CO2 emis did not rise Jan-Jun 2023 due to 12% growth in wind+solar, "the only two electricity sources that significantly increased in the global power mix" Wind+solar produced 14.3% of world electricity H1 2023, a 1.5% increase @windpower_m
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@mzjacobson
Mark Z. Jacobson
4 years
For those who doubt 100% #WindWaterSolar is possible, here is proof it works in world's harshest climate Antarctic station runs only on solar, wind electricity+insulation Antarctica's 1st 0-emis research station shows sustainable living possible anywhere
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@mzjacobson
Mark Z. Jacobson
14 days
Okay, this is crazy Today, California met 148.3% of demand with #WindWaterSolar & 122.7% of demand with solar alone at 14:15 CA met >100% of demand with #WWS for 9.25 hours And the 24-h average WWS was 85.4% of demand The 36th of 44 days with WWS>100% This is just the start
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@mzjacobson
Mark Z. Jacobson
1 year
Common sense Los Angeles Will Require All New Buildings To Be Electric-Only in 2023 -Induction cooktops instead of gas stoves -Heat pumps instead of traditional heat and air conditioning -No fireplaces or outdoor fire pits that burn gas
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@mzjacobson
Mark Z. Jacobson
5 years
Breaking. Norway’s $1trillion oil fund, the world’s largest sovereign wealth fund, is to plunge billions of dollars into wind and solar power projects. @guardianeco @Clara_Vondrich @billmckibben
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@mzjacobson
Mark Z. Jacobson
12 days
California just went 9.25 hours using only renewable energy "The state now has nearly 47 gigawatts of solar, both on rooftops and in farms. Rooftop solar helps reduce demand from the grid, since homeowners can use that power directly" @FastCompany
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@mzjacobson
Mark Z. Jacobson
5 months
Germany plows ahead toward its goal of 100% renewable electricity: Adds 11.7 GW of solar and 2.46 GW of onshore wind and 0.229 GW of offshore wind during first 10 months of 2023 #WindWaterSolar #WWS #NoMiraclesNeeded
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Mark Z. Jacobson
10 months
And yet the lights stayed on... Portugal generated 103% of its electricity consumed from renewables for full month of March Daily variation of RE during March was 86-143% of consumption Hydro 55% Wind 42% Other RE 6% @qz #WWS #WindWaterSolar
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@mzjacobson
Mark Z. Jacobson
6 months
This all-electric hydrofoil ferry saves energy by going airborne and "barely makes a sound as it glides over a metre above water" Carries 30 passengers at 30 knots, reducing "energy per passenger-km by 95%" vs diesel ships transporting passengers
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@mzjacobson
Mark Z. Jacobson
2 years
We have 95% of the technologies we need for a 100% transition of the whole U.S.. by 2035, with 80% by 2030. The main barriers are social and political, not technical or economic.
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@mzjacobson
Mark Z. Jacobson
2 years
Study finds that we can power every state and grid region in the U.S. with just clean, renewable energy (no carbon capture, direct air capture, bioenergy, natural gas, blue hydrogen, or nuclear) @tveitdal @AssaadRazzouk @KatyTurNBC @BiancaJagger @thedavidcrosby @DrShepherd2013
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@mzjacobson
Mark Z. Jacobson
7 years
Wind turbines in Sweden just generated as much power as six nuclear power stations
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@mzjacobson
Mark Z. Jacobson
5 years
1 solar PV panel produces 20x the energy as a #biofuel crop on the same land 1 solar panel drives an #electriccar 80x the distance that ethanol or biodiesel grown on same land drive a car #California farmers planting solar panels as water supplies dry up
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@mzjacobson
Mark Z. Jacobson
8 months
Electric trucks in mass production Volvo opens its fourth electric truck factory - this one in Belgium Has orders for 6,000 trucks globally @Volvo
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@mzjacobson
Mark Z. Jacobson
1 year
Tokyo will require all new homes built 2025 or later to have solar panels.
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@mzjacobson
Mark Z. Jacobson
8 years
"There is a thing called clean coal" Really @realDonaldTrump ? Doesn't exist. 60 x more CO2, 150 times more air pollution per kW than wind.
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@mzjacobson
Mark Z. Jacobson
4 years
Here's a first. Fully-electric, solar-powered 600-unit apartment complex, where each unit has its own battery controlled by the utility, which uses it as a virtual power plant. 100 electric-car chargers to boot. @FastCompany #WWS #WindWaterSolar
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Mark Z. Jacobson
2 years
We found that the overall upfront cost to replace all energy in the 145 countries, which emit 99.7 percent of world CO2, is about $62 trillion. However, due to the $11 trillion annual energy cost savings, the payback time for the new system is less than six years.
@mzjacobson
Mark Z. Jacobson
2 years
On top of that, a #WindWaterSolar energy system reduces cost per unit energy by another 12% , resulting in a 63% lower annual energy cost worldwide. Adding health and climate cost savings gives a 92% reduction in social costs of #WWS relative to the current system
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@mzjacobson
Mark Z. Jacobson
21 days
This is not an anomaly. It is the new reality. The percentages will only increase each year Once again, California exceeds 100% of demand on its main grid with #WindWaterSolar This is the 30TH OF THE PAST 38 DAYS that #WWS supply has exceeded demand for 0.25-6 h per day.
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@mzjacobson
Mark Z. Jacobson
21 days
'It's wild that this isn't getting more news coverage' California has set a benchmark for renewable energy, with wind, solar & hydro providing 100% of the state's energy demand for a part of 25 out of last 32 days (& counting). @the_cool_down_
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@mzjacobson
Mark Z. Jacobson
7 months
The chance of a gasoline or diesel passenger vehicle catching fire is 20-80 times that of a battery-electric passenger vehicle (BEV) catching fire. Only 393 recorded BEV fires out of 30 mil BEVs (0.0013% rate) versus 0.08% rate for fossil vehicles
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@mzjacobson
Mark Z. Jacobson
1 year
Is carbon capture essential to fighting climate change? No. CCUS is a scam. It increases CO2, air pollution, fossil mining & infrastructure and is entirely a tool to keep the fossil industry alive @OpentoDebateOrg Actual data
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@mzjacobson
Mark Z. Jacobson
5 years
The energy revolution accelerates. #Menlo Park California votes unanimously to eliminate natural gas from new commercial & residential buildings @MarkRuffalo ⁩ ⁦ @joshfoxfilm ⁩ ⁦ @howarth_cornell ⁩ ⁦ @ProfStrachan ⁩ ⁦ @AirResources ⁩ ⁦ @MichaelEMann
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@mzjacobson
Mark Z. Jacobson
5 years
@AOC
Alexandria Ocasio-Cortez
5 years
Many people ask what a Green New Deal entails. We are calling for a wartime-level, just economic mobilization plan to get to 100% renewable energy ASAP. To read more, check out - that’s our resolution text. Read Section #6 for our detailed scope & scale.
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Mark Z. Jacobson
1 month
New study shows steep decrease in renewable energy costs with no signs of slowing "the cost of solar power has dropped 87% and battery storage by 85% in the past decade" @Yahoo
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Mark Z. Jacobson
4 years
He's got the right idea “When I am president,...We will pass a #GreenNewDeal that gets us to 100% renewable energy by no later than 2030 and complete decarbonization by 2050” @BernieSanders vows to follow in #NewZealand 's footsteps if elected president
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@mzjacobson
Mark Z. Jacobson
4 years
Two of America's biggest #coal plants closed this month 2.25 GW Navajo Station in Arizona (20 million tonnes CO2/yr) 2.7 GW Bruce Mansfield Unit in Pennsylvania (16.4 million tonnes CO2/yr) @howarth_cornell @EIAgov @350 @SierraClub @100isNow
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Mark Z. Jacobson
10 months
First time ever California reaches 98.5% #WindWaterSolar during a summer day (& 20 GW #WWS produced) 15:40 June 25, 2023 Solar-66.95% Wind-19.87 Geothermal-3.96 Small hydro-1.69 Large hydro-4.62 Batt-1.40 Tot-98.49% >80% WWS for 9.75 h >95% for 1 h
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@mzjacobson
Mark Z. Jacobson
8 months
Using Direct Air Capture to solve climate crisis is "complete nonsense." It increases CO2, air pollution, fossil mining & fossil infrastructure. Planting trees decreases CO2 Bill Gates Says Planting Trees to Solve Climate Crisis Is 'Complete Nonsense'
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@mzjacobson
Mark Z. Jacobson
2 months
Remarkable savings made possible by clean energy transition: 'Reliable and inexpensive' "the study found that the 145 countries looked at could reduce their annual energy costs by 61% by fully transitioning to clean, renewable energy"
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@mzjacobson
Mark Z. Jacobson
6 years
Global cooling due to wind turbines Here is how to power the world minute-by-minute w/100% #wind , water, solar & storage and cool planet w/turbines at same time @ProfStrachan @ProfRayWills @BrianVad @howarth_cornell @MarkRuffalo
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@mzjacobson
Mark Z. Jacobson
3 months
Its about time people making false and defamatory claims about scientific work are brought to justice US climate scientist @MichaelEMann wins $1m in defamation lawsuit
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@mzjacobson
Mark Z. Jacobson
1 year
Breaking! G7 ministers agreed to cut natural gas consumption and increase electricity from renewable sources while phasing out fossil-fuels faster and building no new coal-fired plants G7=Canada, France, Germany, Italy, Japan, UK, US, EU @G7
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@mzjacobson
Mark Z. Jacobson
3 years
This afternoon Feb 27 at 2:25 PM, 82% of all of California's electricity production was from #WindWaterSolar Solar: 53.2% Wind: 21.6% Large hydro: 1.6% Small hydro: 0.6% Geothermal: 5.0% @TheScottLove @CalEnergy @californiapuc @California_ISO #WWS
@mzjacobson
Mark Z. Jacobson
3 years
Nice to see 77% of all electricity in California right now is from #WindWaterSolar (solar, wind, large+small hydro, geothermal) + batteries This will only grow over time until we are beyond 100% #WWS within a few years. @TheScottLove @MichaelEMann @CalEnergy @California_ISO
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