Seventeen Delta-Engine runs on temperature records, the energy transition, and the 2025 solar revolution
Across seventeen verification runs on global temperature and the energy transition, UVRN recorded its first CONSENSUS result — all five major agencies confirmed 2024 as the hottest year on record — and watched 2025 bring a second near-consensus: five independent agencies placed 2025 as the third hottest year within a 0.04°C band (deltaFinal 0.07). The solar build-out added a chapter of its own: 2025 was the first year global installations topped 500 GW, pushing cumulative capacity past 3 terawatts, and U.S. solar surpassed wind for the first time in installed capacity. Sixteen of seventeen runs returned INDETERMINATE — not because the facts are in doubt, but because how agencies count installations, rank years, and frame thresholds diverges enough that no single headline number is safe to quote without naming its source.
On the big questions — is the planet warming, was 2024 the hottest year, is solar winning — the world's monitoring agencies speak with one voice. The latest run produced UVRN's first CONSENSUS result: all five major agencies confirmed 2024 as the warmest year in the instrumental record, averaging 1.46–1.62°C above pre-industrial baseline, with a deltaFinal of 0.02 against the 0.05 threshold. That agreement is now receipt-grade certainty.
The divergence is downstream of the fact. When the Delta Engine scored how independent sources report the specifics — the exact anomaly, the year's rank, whether a symbolic threshold was crossed, how new solar capacity is counted — the numbers stopped lining up. The fact is settled; the scoreboard isn't.
Each entry below is a separate Delta-Engine run with its own ledger receipt.
All six agencies agree 2024 was the warmest on record (~1.46°C above pre-industrial).
Agencies split on whether 2024 was the first calendar year to cross the Paris 1.5°C threshold.
Datasets disagree on whether 2025 ranked second or third hottest — a ranking dispute, not a temperature one.
Five sources confirm renewables crossed ~24% of U.S. generation in 2024; wind led at 10.3%.
FERC, EIA and independent labs agree utility-scale solar added the most new U.S. capacity in 2024.
Industry and government sources diverge on how to count solar's ~50 GW / 66%-of-additions record.
IRENA, IEA, Ember and BloombergNEF all confirm a record 2025 — but publish different totals.
50 GW installed in 2024 — the largest single-year addition by any energy technology on the US grid in over two decades, accounting for 66% of all new U.S. capacity.
Solar crossed 2 TW cumulative capacity in 2024. The second terawatt arrived in two years; the first took 68 years to build (1954–2022).
All five authoritative monitoring agencies — NASA, NOAA, Copernicus, WMO, and Berkeley Earth — issued coordinated headline confirmations of 2024 as the warmest year on record, each reporting an anomaly above 1.5°C. The deltaFinal of 0.0208 is well inside the 0.05 consensus threshold. A single year above 1.5°C does not breach the Paris Agreement's 30-year average target, but it marks a major monitoring milestone in climate science.
Every run above emitted a DRVC3 receipt. The hashes:
sha256:05d367ad…604573ef
sha256:fc9198a8…657ac6682
sha256:49149b3a…ac5d4ea78
sha256:bf4c2482…cb03ddb6
sha256:c69c7f40…43c03af8
sha256:5f9a4141…4983f3dc
sha256:e01ae088…3c4e4867
sha256:b98c3f04…8085aecf
sha256:5325f899…9847457b
sha256:3f17e56d…f849c981
sha256:cb541009…095cbf84
sha256:bd377d62…02bc3c95
sha256:18453320…6e77d46f
sha256:2b167d63…06fa359c
sha256:39fb427d…4d71f83d
sha256:e2fc1fdd…0aedc5cf
sha256:c384ed43…4424ad61
Seven new Delta-Engine runs from the 2025 research log, each with its own ledger receipt.
IEA: 605 GW added in 2025. IRENA: 511 GW. Both confirm a first — but sources diverge by nearly 100 GW on the headline total.
2025 pushed cumulative global solar past 3 TW. The third terawatt arrived in roughly one year; the first took 68 years (1954–2022).
For the first time, U.S. installed solar capacity exceeded wind: 164.5 GW vs 161.1 GW. A structural crossover, not a rounding quirk.
U.S. wind and solar combined generated 760,000 GWh in 2025 — 17% of national electricity, ahead of coal and nuclear each.
U.S. grid-scale battery additions jumped 66% in 2024 to 10.4 GW. Cumulative installed reached 26 GW — but reporting methodologies diverge.
Five agencies confirmed 2025 as the third hottest year on record, each reporting 1.43–1.47°C above pre-industrial — a 0.04°C band (deltaFinal 0.07).
Global ocean heat content set its ninth consecutive annual record in 2025: +23 ZJ above 2024, confirmed independently by NOAA, Copernicus, and IAPSO.
The direction is unanimous: 2025 shattered every prior solar installation record. The magnitude is not — IEA and IRENA report a gap of roughly 94 GW on the single-year total, wider than any prior year on record. Both agree the cumulative 3-terawatt threshold was crossed. For any headline citing '600 GW' or '511 GW', the source agency is the essential context.
“In 2022, five agencies split on 2025's rank. By early 2026, all five agreed: third hottest. The deltaFinal fell from 1.32 to 0.07 as the data matured — a convergence in real time, visible in the ledger.”
This is what the receipt model was designed to capture: not just where agencies stand today, but how close the scoreboard is to settling. At deltaFinal 0.07, the 2025 temperature ranking is one or two reporting cycles away from a second CONSENSUS — if the agencies don't diverge again.
Each figure ships with the agency that published it — no orphaned numbers that can't be traced.
Where agencies diverge on rank or threshold, the gap is made explicit instead of averaged away.
Every run pins to a public receipt, so a reader can re-check the consensus without trusting us.
For a buyer, regulator, or model ingesting this data, the lesson is precise: cite the agency, not just the number. UVRN's value here isn't to declare a winner among the figures — it's to surface, with a verifiable receipt, exactly where independent sources stop agreeing.
Related research
UVRN uses analytics to understand page and worklog usage. Ad storage and personalization stay off.