Nicolas Fulghum
@nicolasfulghum.bsky.social
Senior Energy and Climate Data Analyst @emberenergy.bsky.social
Finding, curating and explaining the data behind the global energy⚡️transition.
Finding, curating and explaining the data behind the global energy⚡️transition.
NEW DATA | Solar generation in 2025 has already exceeded the 2024 total as of September ☀️⚡️
A 31% increase in Q1-Q3 2025, has pushed solar beyond the full year output for 2024, with three months left in 2025.
A 31% increase in Q1-Q3 2025, has pushed solar beyond the full year output for 2024, with three months left in 2025.
November 13, 2025 at 11:12 AM
NEW DATA | Solar generation in 2025 has already exceeded the 2024 total as of September ☀️⚡️
A 31% increase in Q1-Q3 2025, has pushed solar beyond the full year output for 2024, with three months left in 2025.
A 31% increase in Q1-Q3 2025, has pushed solar beyond the full year output for 2024, with three months left in 2025.
NEW | No growth for fossil fuels in global electricity generation expected in 2025 🔥❌
Ember forecasts no increase in fossil generation as wind and solar are growing fast enough to meet all new electricity demand.
Ember forecasts no increase in fossil generation as wind and solar are growing fast enough to meet all new electricity demand.
November 13, 2025 at 8:36 AM
NEW | No growth for fossil fuels in global electricity generation expected in 2025 🔥❌
Ember forecasts no increase in fossil generation as wind and solar are growing fast enough to meet all new electricity demand.
Ember forecasts no increase in fossil generation as wind and solar are growing fast enough to meet all new electricity demand.
NEW data | Less than 50% of Australia's electricity generation came from fossil fuels in October 🇦🇺⚡️
This was the first month ever where renewables have overtaken fossil fuels in Australia's electricity mix.
10 years ago, in October 2015, fossil fuels made up 86%.
This was the first month ever where renewables have overtaken fossil fuels in Australia's electricity mix.
10 years ago, in October 2015, fossil fuels made up 86%.
November 10, 2025 at 11:08 AM
NEW data | Less than 50% of Australia's electricity generation came from fossil fuels in October 🇦🇺⚡️
This was the first month ever where renewables have overtaken fossil fuels in Australia's electricity mix.
10 years ago, in October 2015, fossil fuels made up 86%.
This was the first month ever where renewables have overtaken fossil fuels in Australia's electricity mix.
10 years ago, in October 2015, fossil fuels made up 86%.
LATEST DATA | Strong solar additions and favourable hydro conditions in China pushed coal power down 5.4% in September compared to 2024 🇨🇳⚡️
Year-to-date, coal power remains down 1.4%.
Year-to-date, coal power remains down 1.4%.
October 28, 2025 at 4:59 PM
LATEST DATA | Strong solar additions and favourable hydro conditions in China pushed coal power down 5.4% in September compared to 2024 🇨🇳⚡️
Year-to-date, coal power remains down 1.4%.
Year-to-date, coal power remains down 1.4%.
Another new record for batteries in California 🔋⚡️
Batteries met a record high 37.2% of load at 6:25pm yesterday, Oct 12.
The share of load remained at >30% for two whole hours from 5:50 to 7:50 during peak demand and discharged late into the night, reducing gas and imports.
Batteries met a record high 37.2% of load at 6:25pm yesterday, Oct 12.
The share of load remained at >30% for two whole hours from 5:50 to 7:50 during peak demand and discharged late into the night, reducing gas and imports.
October 13, 2025 at 3:28 PM
Another new record for batteries in California 🔋⚡️
Batteries met a record high 37.2% of load at 6:25pm yesterday, Oct 12.
The share of load remained at >30% for two whole hours from 5:50 to 7:50 during peak demand and discharged late into the night, reducing gas and imports.
Batteries met a record high 37.2% of load at 6:25pm yesterday, Oct 12.
The share of load remained at >30% for two whole hours from 5:50 to 7:50 during peak demand and discharged late into the night, reducing gas and imports.
NEW | EU solar generation has already exceeded its 2024 total as of September ☀️🇪🇺
Solar is by far the fastest growing source of electricity in the EU, up 20% year-on-year.
Solar is by far the fastest growing source of electricity in the EU, up 20% year-on-year.
October 11, 2025 at 10:10 AM
NEW | EU solar generation has already exceeded its 2024 total as of September ☀️🇪🇺
Solar is by far the fastest growing source of electricity in the EU, up 20% year-on-year.
Solar is by far the fastest growing source of electricity in the EU, up 20% year-on-year.
NEW DATA | For the first time ever, wind and solar produced more than 50% of the UK's electricity ☀️🍃🇬🇧
🏆 In September, wind and solar generation reached a share of 50.4%
Both wind and solar generation also reached new absolute output records for the month of September:
Wind: 7.7 TWh
Solar: 1.7 TWh
🏆 In September, wind and solar generation reached a share of 50.4%
Both wind and solar generation also reached new absolute output records for the month of September:
Wind: 7.7 TWh
Solar: 1.7 TWh
October 9, 2025 at 5:52 PM
NEW DATA | For the first time ever, wind and solar produced more than 50% of the UK's electricity ☀️🍃🇬🇧
🏆 In September, wind and solar generation reached a share of 50.4%
Both wind and solar generation also reached new absolute output records for the month of September:
Wind: 7.7 TWh
Solar: 1.7 TWh
🏆 In September, wind and solar generation reached a share of 50.4%
Both wind and solar generation also reached new absolute output records for the month of September:
Wind: 7.7 TWh
Solar: 1.7 TWh
NEW @ember-energy.org report out today | Renewables now produce more electricity than coal worldwide ⚡️
Renewables produced 5,072 TWh (34.4% share) in the first half of 2025 overtaking coal for the first time which stood at 4,896 TWh (33.1%.)
Renewables produced 5,072 TWh (34.4% share) in the first half of 2025 overtaking coal for the first time which stood at 4,896 TWh (33.1%.)
October 7, 2025 at 4:10 PM
NEW @ember-energy.org report out today | Renewables now produce more electricity than coal worldwide ⚡️
Renewables produced 5,072 TWh (34.4% share) in the first half of 2025 overtaking coal for the first time which stood at 4,896 TWh (33.1%.)
Renewables produced 5,072 TWh (34.4% share) in the first half of 2025 overtaking coal for the first time which stood at 4,896 TWh (33.1%.)
More than 5% isn't possible...more than 10% isn't possible...
Solar was already at 8.8% of GLOBAL electricity generation in the first half of 2025, more than doubling since 2021 (3.8%). ☀️
I guess 30% is the new limit??
🇭🇺Hungary: 29.7%
🇬🇷Greece: 26.3%
🇳🇱Netherlands: 25.7%
Solar was already at 8.8% of GLOBAL electricity generation in the first half of 2025, more than doubling since 2021 (3.8%). ☀️
I guess 30% is the new limit??
🇭🇺Hungary: 29.7%
🇬🇷Greece: 26.3%
🇳🇱Netherlands: 25.7%
October 7, 2025 at 3:20 PM
More than 5% isn't possible...more than 10% isn't possible...
Solar was already at 8.8% of GLOBAL electricity generation in the first half of 2025, more than doubling since 2021 (3.8%). ☀️
I guess 30% is the new limit??
🇭🇺Hungary: 29.7%
🇬🇷Greece: 26.3%
🇳🇱Netherlands: 25.7%
Solar was already at 8.8% of GLOBAL electricity generation in the first half of 2025, more than doubling since 2021 (3.8%). ☀️
I guess 30% is the new limit??
🇭🇺Hungary: 29.7%
🇬🇷Greece: 26.3%
🇳🇱Netherlands: 25.7%
NEW | Electricity generation from fossil fuels fell in China and India in the first half of 2025 🔥📉
This marks a reversal from previous trends.
Simultaneously, there was a small uptick in the US and in the EU.
A thread 🧵
This marks a reversal from previous trends.
Simultaneously, there was a small uptick in the US and in the EU.
A thread 🧵
October 7, 2025 at 7:16 AM
NEW | Electricity generation from fossil fuels fell in China and India in the first half of 2025 🔥📉
This marks a reversal from previous trends.
Simultaneously, there was a small uptick in the US and in the EU.
A thread 🧵
This marks a reversal from previous trends.
Simultaneously, there was a small uptick in the US and in the EU.
A thread 🧵
NEW DATA | China's exports of clean technologies exceeded 20 billion USD for the first time in August📈
We just published a new @ember-energy.org data tool to track exports of EVs, batteries, gridtech etc. on top of our existing tracking of solar exports.
🧵
We just published a new @ember-energy.org data tool to track exports of EVs, batteries, gridtech etc. on top of our existing tracking of solar exports.
🧵
October 6, 2025 at 8:22 AM
NEW DATA | China's exports of clean technologies exceeded 20 billion USD for the first time in August📈
We just published a new @ember-energy.org data tool to track exports of EVs, batteries, gridtech etc. on top of our existing tracking of solar exports.
🧵
We just published a new @ember-energy.org data tool to track exports of EVs, batteries, gridtech etc. on top of our existing tracking of solar exports.
🧵
It's astonishing how wide the battery curve has gotten in California.
Last Tuesday, batteries consistently supplied more than 20% of demand for 4 hours from 6pm to 10pm.
Price signals are working well.
Last Tuesday, batteries consistently supplied more than 20% of demand for 4 hours from 6pm to 10pm.
Price signals are working well.
October 4, 2025 at 2:49 PM
It's astonishing how wide the battery curve has gotten in California.
Last Tuesday, batteries consistently supplied more than 20% of demand for 4 hours from 6pm to 10pm.
Price signals are working well.
Last Tuesday, batteries consistently supplied more than 20% of demand for 4 hours from 6pm to 10pm.
Price signals are working well.
NEW DATA | US solar power surpasses 2024 full year output in September 🇺🇸☀️
With three months left in 2025, solar generation reached 310 TWh, already surpassing the 2024 total of 302 TWh.
Solar generation is up 30% in 2025 so far.
With three months left in 2025, solar generation reached 310 TWh, already surpassing the 2024 total of 302 TWh.
Solar generation is up 30% in 2025 so far.
October 3, 2025 at 6:29 PM
NEW DATA | US solar power surpasses 2024 full year output in September 🇺🇸☀️
With three months left in 2025, solar generation reached 310 TWh, already surpassing the 2024 total of 302 TWh.
Solar generation is up 30% in 2025 so far.
With three months left in 2025, solar generation reached 310 TWh, already surpassing the 2024 total of 302 TWh.
Solar generation is up 30% in 2025 so far.
NEW ANALYSIS | Spain is successfully decoupling electricity prices from gas power costs 🇪🇸⚡️
Spain reduced the number of hours where electricity prices exceed gas costs by 75% since 2019.
As a result, Spain's electricity prices were 32% lower than the EU average in H1-2025.
Spain reduced the number of hours where electricity prices exceed gas costs by 75% since 2019.
As a result, Spain's electricity prices were 32% lower than the EU average in H1-2025.
October 2, 2025 at 9:21 AM
NEW ANALYSIS | Spain is successfully decoupling electricity prices from gas power costs 🇪🇸⚡️
Spain reduced the number of hours where electricity prices exceed gas costs by 75% since 2019.
As a result, Spain's electricity prices were 32% lower than the EU average in H1-2025.
Spain reduced the number of hours where electricity prices exceed gas costs by 75% since 2019.
As a result, Spain's electricity prices were 32% lower than the EU average in H1-2025.
Another new battery record in Australia's National Electricity market 🔋🇦🇺
Battery net output reached 2,132 MW at 6:50 PM on Tuesday 30th September.
And this is just the beginning...
Battery net output reached 2,132 MW at 6:50 PM on Tuesday 30th September.
And this is just the beginning...
October 1, 2025 at 9:24 PM
Another new battery record in Australia's National Electricity market 🔋🇦🇺
Battery net output reached 2,132 MW at 6:50 PM on Tuesday 30th September.
And this is just the beginning...
Battery net output reached 2,132 MW at 6:50 PM on Tuesday 30th September.
And this is just the beginning...
Reposted by Nicolas Fulghum
☀️ In July 2024, 40 US states set new all-time monthly highs for solar generation, building on June's record of 38 states.
The trend shows that solar continues to be an important contributor to the US power mix, despite recent moves by the US government to restrict clean power deployment.
The trend shows that solar continues to be an important contributor to the US power mix, despite recent moves by the US government to restrict clean power deployment.
September 26, 2025 at 4:06 PM
☀️ In July 2024, 40 US states set new all-time monthly highs for solar generation, building on June's record of 38 states.
The trend shows that solar continues to be an important contributor to the US power mix, despite recent moves by the US government to restrict clean power deployment.
The trend shows that solar continues to be an important contributor to the US power mix, despite recent moves by the US government to restrict clean power deployment.
While Trump is telling the UN that solar is a scam, the reality in the US looks very different.
A sunny July saw 40 US states break their all-time high for solar generation in a single month 🇺🇸☀️
Just one month earlier, in June, 38 states had set new all-time records.
A sunny July saw 40 US states break their all-time high for solar generation in a single month 🇺🇸☀️
Just one month earlier, in June, 38 states had set new all-time records.
September 26, 2025 at 11:34 AM
While Trump is telling the UN that solar is a scam, the reality in the US looks very different.
A sunny July saw 40 US states break their all-time high for solar generation in a single month 🇺🇸☀️
Just one month earlier, in June, 38 states had set new all-time records.
A sunny July saw 40 US states break their all-time high for solar generation in a single month 🇺🇸☀️
Just one month earlier, in June, 38 states had set new all-time records.
NEW DATA | China's incredible solar growth continues in August 🇨🇳☀️
Solar power reached 124 TWh in August according to the latest Ember data released today.
This was a 39% increased compared to August 2024.
Solar power reached 124 TWh in August according to the latest Ember data released today.
This was a 39% increased compared to August 2024.
September 25, 2025 at 7:53 PM
NEW DATA | China's incredible solar growth continues in August 🇨🇳☀️
Solar power reached 124 TWh in August according to the latest Ember data released today.
This was a 39% increased compared to August 2024.
Solar power reached 124 TWh in August according to the latest Ember data released today.
This was a 39% increased compared to August 2024.
The latest grid to charge ahead with batteries: Victoria, Australia 🇦🇺🔋
After a slow build-up over the last few years, 2025 has seen a rapid acceleration, with another new record today at just under 1 GW discharge.
After a slow build-up over the last few years, 2025 has seen a rapid acceleration, with another new record today at just under 1 GW discharge.
September 25, 2025 at 6:33 PM
The latest grid to charge ahead with batteries: Victoria, Australia 🇦🇺🔋
After a slow build-up over the last few years, 2025 has seen a rapid acceleration, with another new record today at just under 1 GW discharge.
After a slow build-up over the last few years, 2025 has seen a rapid acceleration, with another new record today at just under 1 GW discharge.
Reposted by Nicolas Fulghum
Good thread about Brazil's dynamic of hydro+wind+solar.
Here in the EU we're not really going to build anymore hydro dams.
But adding pumped hydro storage to existing facilities? That plays so well with loads of wind and solar.
Here in the EU we're not really going to build anymore hydro dams.
But adding pumped hydro storage to existing facilities? That plays so well with loads of wind and solar.
Wind and solar power now make up around 30% of electricity generation in Brazil.
But are they really useful in a hydro dominated system?
A thread on why they play an increasingly important role in Brazil's power sector 🧵🇧🇷
But are they really useful in a hydro dominated system?
A thread on why they play an increasingly important role in Brazil's power sector 🧵🇧🇷
September 24, 2025 at 6:22 PM
Good thread about Brazil's dynamic of hydro+wind+solar.
Here in the EU we're not really going to build anymore hydro dams.
But adding pumped hydro storage to existing facilities? That plays so well with loads of wind and solar.
Here in the EU we're not really going to build anymore hydro dams.
But adding pumped hydro storage to existing facilities? That plays so well with loads of wind and solar.
Wind and solar power now make up around 30% of electricity generation in Brazil.
But are they really useful in a hydro dominated system?
A thread on why they play an increasingly important role in Brazil's power sector 🧵🇧🇷
But are they really useful in a hydro dominated system?
A thread on why they play an increasingly important role in Brazil's power sector 🧵🇧🇷
September 24, 2025 at 6:16 PM
Wind and solar power now make up around 30% of electricity generation in Brazil.
But are they really useful in a hydro dominated system?
A thread on why they play an increasingly important role in Brazil's power sector 🧵🇧🇷
But are they really useful in a hydro dominated system?
A thread on why they play an increasingly important role in Brazil's power sector 🧵🇧🇷
Despite the Trump administration's anti-solar stance, solar power in the US remains a markedly non-partisan story.
California, Texas, Missouri, Florida ... it's growing everywhere.
12 out of the top 20 states with the largest share increase over the last year were won by Trump.
California, Texas, Missouri, Florida ... it's growing everywhere.
12 out of the top 20 states with the largest share increase over the last year were won by Trump.
September 23, 2025 at 9:07 PM
Despite the Trump administration's anti-solar stance, solar power in the US remains a markedly non-partisan story.
California, Texas, Missouri, Florida ... it's growing everywhere.
12 out of the top 20 states with the largest share increase over the last year were won by Trump.
California, Texas, Missouri, Florida ... it's growing everywhere.
12 out of the top 20 states with the largest share increase over the last year were won by Trump.
The latest US state electricity data for July 2025 is out 🇺🇸⚡️
Texas solar generation reached another all-time high at 6,758 GWh.
This was a massive 46% year-on-year increase, compared to July 2024 📈
Texas solar generation reached another all-time high at 6,758 GWh.
This was a massive 46% year-on-year increase, compared to July 2024 📈
September 23, 2025 at 5:33 PM
The latest US state electricity data for July 2025 is out 🇺🇸⚡️
Texas solar generation reached another all-time high at 6,758 GWh.
This was a massive 46% year-on-year increase, compared to July 2024 📈
Texas solar generation reached another all-time high at 6,758 GWh.
This was a massive 46% year-on-year increase, compared to July 2024 📈
Replacing the fossil fuel based system with wind and solar, EVs and heat pumps does not mean swapping like for like. We don't have to meet exajoule with exajoule.
An energy system based on modern, electrified technologies powered by renewables is vastly more efficient.
An energy system based on modern, electrified technologies powered by renewables is vastly more efficient.
September 23, 2025 at 3:38 PM
Replacing the fossil fuel based system with wind and solar, EVs and heat pumps does not mean swapping like for like. We don't have to meet exajoule with exajoule.
An energy system based on modern, electrified technologies powered by renewables is vastly more efficient.
An energy system based on modern, electrified technologies powered by renewables is vastly more efficient.
Power system planning in the EU is complex 🇪🇺
National grid needs, EU grid needs, system flexibility, different planning workstreams happening at the same time, overlaps, intersections, misalignment...
Beautifully illustrated by my colleagues Reynaldo Dizon and Elisabeth Cremona
National grid needs, EU grid needs, system flexibility, different planning workstreams happening at the same time, overlaps, intersections, misalignment...
Beautifully illustrated by my colleagues Reynaldo Dizon and Elisabeth Cremona
September 23, 2025 at 11:30 AM
Power system planning in the EU is complex 🇪🇺
National grid needs, EU grid needs, system flexibility, different planning workstreams happening at the same time, overlaps, intersections, misalignment...
Beautifully illustrated by my colleagues Reynaldo Dizon and Elisabeth Cremona
National grid needs, EU grid needs, system flexibility, different planning workstreams happening at the same time, overlaps, intersections, misalignment...
Beautifully illustrated by my colleagues Reynaldo Dizon and Elisabeth Cremona