Greg Schivley
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gschivley.bsky.social
Greg Schivley
@gschivley.bsky.social
Energy systems data, code, hiking, bikes, and more. Building stuff in the ZERO Lab at Princeton.
X1 TLR here, not that I know the difference. More that I needed something wider (40mm) and with some tread for rides on rail trails with my daughter on the back.
October 5, 2025 at 12:27 AM
Apparently EIA's method results in an over-smoothed distribution of energy across the year, especially for smaller dams. Figure from an earlier paper by the same authors showing how Hoover and Glen Canyon profiles are applied to other dams in the region.

www.nature.com/articles/s41...
September 3, 2025 at 7:50 PM
Using dam release or streamflow is more accurate than surveyed plants. They provide generation estimates using both historical capacity (where plant cap has changed over time) and *current* capacity, which is useful for power system models representing today's capacity in historical weather years.
September 3, 2025 at 6:50 PM
If they're actually LIB, any reason to believe that charge rates are much lower than discharge rates? I wouldn't expect them to be but suppose they could be setting operational limits.
August 14, 2025 at 6:03 PM
Chasing fireflies with the kids was enough to get me sweating tonight. Then I realized the Porto/Al Ahly game was just up the road 🥵
June 24, 2025 at 3:42 AM
75kWh also makes the fuel over $12/gal at residential rates. Not including whatever it costs to buy the unit.
June 18, 2025 at 2:18 PM
Reposted by Greg Schivley
And again, the measles vaccine is estimated to have saved more than 90 million lives globally in the last 50 years.

ourworldindata.org/measles-vacc...
June 16, 2025 at 2:05 PM