Observatory-K

DATA

Live feeds refresh every 15 min. Snapshots do not. Last check 2026-10-08 10:34 UTC.

Energy-Charts
CONNECTED
European solar and wind
Every 15 min · 2026-10-08
ENTSO-E
OFF
German solar and wind, if a token is set
Every 15 min · —
Launch Library 2
STALE
Upcoming launches
Every 15 min · 2026-10-08
Energy Institute
SNAPSHOT
Measured anchor, 2023
Does not refresh · 2023
Ember monthly electricity
ESTIMATE
World generation, trailing 12 months
Daily job · scripts/refresh-k-monthly.mjs · 2026-08 · 2026-10-08
IEA Global Energy Review 2025
SNAPSHOT
Energy demand vs electricity demand
Does not refresh · 2025
Ember
SNAPSHOT
World electricity mix
Does not refresh · 2025
TOP500
SNAPSHOT
El Capitan, HPL
Does not refresh · 2025-06
Epoch AI
SNAPSHOT
Frontier training compute
Daily job · scripts/refresh-epoch.mjs · 2026-09-03
Green500
SNAPSHOT
FLOPs per watt, list #1
scripts/refresh-green500.mjs · 2026-06
IEA Energy and AI
SNAPSHOT
Data-centre electricity
Does not refresh · 2025
Country table
SNAPSHOT
Energy per person, mix, growth
Does not refresh · Compiled

SOURCE	FEEDS	STATUS	REFRESH	UPDATED
Energy-Charts	European solar and wind	CONNECTED	Every 15 min	2026-10-08
ENTSO-E	German solar and wind, if a token is set	OFF	Every 15 min	—
Launch Library 2	Upcoming launches	STALE	Every 15 min	2026-10-08
Energy Institute	Measured anchor, 2023	SNAPSHOT	Does not refresh	2023
Ember monthly electricity	World generation, trailing 12 months	ESTIMATE	Daily job · scripts/refresh-k-monthly.mjs	2026-08 · 2026-10-08
IEA Global Energy Review 2025	Energy demand vs electricity demand	SNAPSHOT	Does not refresh	2025
Ember	World electricity mix	SNAPSHOT	Does not refresh	2025
TOP500	El Capitan, HPL	SNAPSHOT	Does not refresh	2025-06
Epoch AI	Frontier training compute	SNAPSHOT	Daily job · scripts/refresh-epoch.mjs	2026-09-03
Green500	FLOPs per watt, list #1	SNAPSHOT	scripts/refresh-green500.mjs	2026-06
IEA Energy and AI	Data-centre electricity	SNAPSHOT	Does not refresh	2025
Country table	Energy per person, mix, growth	SNAPSHOT	Does not refresh	Compiled

WATTS ADDED 2025

/watts

IRENA · IRENA Renewable Capacity Statistics 2026MEASURED
2026-03 · net capacity change, AC where reported
GEM coal · Global Energy Monitor — Boom and Bust Coal 2026MEASURED
2026 · gross, newly commissioned
GEM gas · Global Energy Monitor — Global Oil and Gas Plant Tracker (January 2026)MEASURED
2026-01 · gross, newly commissioned
WNISR · World Nuclear Industry Status Report — Number of operating reactors drops (21 Jan 2026)MEASURED
2026-01-21 · gross grid connections; closures listed separately
BNEF · BloombergNEF — Energy storage enters the 100-gigawatt era (7 May 2026)ESTIMATE
2026-05-07 · new deployments, excludes pumped hydro
IEA PVPS Trends report, as reported by Solarplaza · IEA PVPS Trends report, as reported by SolarplazaMEASURED
2026 · PV installations, IEA PVPS method

MONTHLY K ESTIMATE · METHOD

P(m) = P2023 × (TTM(m) / G2023) ^ e

P(m) = P2023 * (TTM(m) / G2023)^e. P2023 is 620 EJ in 2023 converted to watts. TTM is Ember world total electricity generation for the 12 months ending at m. e is 0.5; the range uses 0.25 and 0.75 because IEA finds primary energy demand grows about half as fast as electricity.

G2023 · 28905.076 TWh · Ember world total generation, calendar 2023
P2023 · 620 EJ · K 0.7293 · measured anchor
e · 0.5 · range 0.25–0.75
Latest TTM · AUG 2026 · 31640.216 TWh
K · 0.7313 · range 0.7303–0.7323

DATA

Energy-Charts

ENTSO-E

Launch Library 2

Energy Institute

Ember monthly electricity

IEA Global Energy Review 2025

Ember

TOP500

Epoch AI

Green500

IEA Energy and AI

Country table

WATTS ADDED 2025

MONTHLY K ESTIMATE · METHOD