Was curious what the actual energy available for Voyager 1 & 2 actually is, so I went and looked. Ended up finding much greater amount than I actually planned to.<p>At 43.9151 years (September 5, 1977), Voyager 1 is now at 49.14% (last report) of what used to be a 471 watt power supply at start of mission.<p>At 43.5263 years (August 20, 1977), Voyager 2 is now at 49.09% (last report) of what used to be a 476 watt power supply at start of mission.<p>The data was found from a kind of humorous paper and dataset publication on the subject that actually covers every RTG that was ever launched and used to only be available on "The Graph."<p>The publication version of "The Graph": <a href="https://www.tandfonline.com/cms/asset/cdf5f3b7-d619-4b10-93ba-dd928398cf8c/unct_a_2410606_f0003_oc.jpg" rel="nofollow">https://www.tandfonline.com/cms/asset/cdf5f3b7-d619-4b10-93b...</a><p>The full dataset has RTG data from: Transit 5BN-1, Transit 5BN-2, Nimbus III, Pioneer 10, Pioneer 11, Viking 1, Viking 2, Apollo 12, Apollo 14, Apollo 15, Apollo 16, Apollo 17, Triad-01-1X, LES 8, LES 9, Voyager 1, Voyager 2, Galileo, Ulysses (F-3), Cassini, New Horizons, Curiosity, and Perseverance<p>Paper: <a href="https://www.tandfonline.com/doi/full/10.1080/00295450.2024.2410606#abstract" rel="nofollow">https://www.tandfonline.com/doi/full/10.1080/00295450.2024.2...</a><p>Dataset: <a href="https://datadryad.org/dataset/doi:10.5061/dryad.1zcrjdfw2" rel="nofollow">https://datadryad.org/dataset/doi:10.5061/dryad.1zcrjdfw2</a><p>The authors request the following reference for the use: C.E. Whiting and D.F. Woerner, "Chapter 8: Lifetime Performance of Spaceborne RTGs," The Technology of Discovery: Radioisotope Thermoelectric Generators and Thermoelectric Technologies for Space Exploration, D.F. Woerner, Ed., John Wiley & Sons, 2023. ISBN: 9781119811367