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Kilohour4d ago • 3 min read
How a power station runtime estimate is computed (and why it rounds down)
A portable power station says "1,000 Wh" on the box, but nobody gets 1,000 Wh of AC output from it.....
#javascript#webdev#showdev#energy
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munimv23d ago • 2 min read
Planned U.S. power plants rarely move backward in EIA's monthly survey. When they do, it matters
Every month, EIA's survey of planned generators (EIA-860M) gives each project a status: planned,...
#energy#datascience#opensource#python
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munimv2Oct 16, 2026 • 2 min read
No U.S. coal unit has retired in 2026 so far. Here is what happened to the 6.4 GW that was planned
In February, EIA said 6.4 GW of U.S. coal capacity was scheduled to retire in 2026. I went through.....
#energy#datascience#opensource#python
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munimv23d ago • 2 min read
When a planned U.S. power plant drops out of EIA's monthly survey, it rarely comes back under a new name
EIA's monthly survey of planned generators (EIA-860M) has no "cancelled" status. A dropped plan just...
#energy#datascience#opensource#python
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munimv25d ago • 2 min read
Solar, wind, batteries and gas each lost about a quarter of their 2026 plan by August
In February, EIA said developers planned to add a record 86 GW of generating capacity to the U.S....
#energy#datascience#opensource#python
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munimv26d ago • 2 min read
I billed every U.S. utility's standard residential tariff in NREL's URDB and compared it with what households actually paid
NREL's Utility Rate Database (URDB) is where REopt, SAM, dGen and most bill calculators get their...
#energy#datascience#opensource#python
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munimv23d ago • 2 min read
For a planned U.S. power plant, the construction stage says more than the calendar
Every month, EIA's survey of planned generators (EIA-860M) lists each project's status (planned,...
#energy#datascience#opensource#python
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munimv22d ago • 2 min read
When a U.S. power plant's status changes back, PUDL's EIA-860M changelog misses it
Catalyst Cooperative's PUDL project publishes a monthly changelog of EIA-860M generator records, one...
#energy#datascience#opensource#python
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munimv25d ago • 3 min read
The retirement dates EIA lists for the coal plants DOE holds open are the emergency-order expiry dates
Since May 2025 the U.S. Department of Energy has used Federal Power Act section 202(c) to keep eight...
#energy#datascience#opensource#python
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munimv21d ago • 2 min read
PUDL's EIA-860M changelog has kept stale U.S. power plant statuses since 2016
Earlier this week I found that Catalyst Cooperative's PUDL changelog of EIA-860M generator records.....
#energy#datascience#opensource#python
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munimv21d ago • 2 min read
EIA's November 2024 generator file leaves out 277 retired U.S. units that the months around it list
While rebuilding a month-to-month changelog from all 134 of EIA's monthly EIA-860M workbooks (July.....
#energy#datascience#opensource#python
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munimv25d ago • 2 min read
Batteries at U.S. solar plants slipped with their solar, never without it
In February, EIA said developers planned to add 24 GW of utility-scale battery storage in 2026. Its....
#energy#datascience#opensource#python
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munimv24d ago • 2 min read
Every DOE 202(c) emergency order of 2025-2026 in one CSV: 66 this year, and emergency orders in force on 76 days
The U.S. Department of Energy can order a utility or grid operator to keep running generation under....
#energy#datascience#opensource#python
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munimv24d ago • 2 min read
Why EIA says 78% of the capacity planned for 2017 came online and the monthly survey says 64%: the two surveys listed different projects
In my last post, January's EIA-860M plans for 2017-2025 delivered 62% of their capacity in the...
#energy#datascience#opensource#python
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munimv23d ago • 3 min read
Which EIA 'planned capacity' are you quoting? Two surveys, two lists, two delivery rates
"How much of the capacity planned for this year actually gets built?" is a question people answer...
#energy#datascience#opensource#python
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munimv22d ago • 2 min read
A planned U.S. power plant that misses its date by more than a year is more often late than dropped
EIA's monthly survey of planned generators (EIA-860M) gives each generator a planned month. MV2's...
#energy#datascience#opensource#python
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Evgenii Konkin22h ago • 2 min read
Chilled Water Delta-T: How a 5-Degree Drop Cut Chiller Capacity in Half
In a chilled water system, delta-T is the temperature difference between return water (warm) and...
#hvac#engineering#energy#tutorial
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munimv25d ago • 2 min read
The 2026 U.S. solar plan barely moved. A quarter of it was replaced underneath
In December 2025, EIA's monthly generator inventory (Form EIA-860M) had 43.65 GW of utility-scale...
#energy#datascience#opensource#python
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munimv22d ago • 2 min read
Some planned U.S. power plants enter EIA's annual file during the year, not before it
EIA's annual survey of power plants, EIA-860, comes out twice for each year: an early release in...
#energy#datascience#opensource#python
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Hacks.gr4d ago • 2 min read
Amazon is funding a new nuclear power plant in Indiana for its data centers
Amazon is funding a 960-megawatt nuclear plant in Indiana utilizing 12 small modular reactors from X...
#amazon#xenergy#cloudinfrastructure#energy
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munimv23d ago • 3 min read
The projects only EIA's annual survey planned for 2017 were mostly ones the monthly survey first listed that year
In my last post, EIA's annual survey and its monthly survey (EIA-860M) listed different projects as....
#energy#datascience#opensource#python
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munimv25d ago • 3 min read
EIA's January "forecast" of this year's solar additions was the developers' plan, 2020-2024
Every January EIA publishes two numbers for how much utility-scale solar will be added that year....
#energy#datascience#opensource#python
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Karen Miller3d ago • 1 min read
AI Boom Sparks Unprecedented Nuclear Restart: 2.25 GW of Clean Power for Data Centers
AI Boom Sparks Unprecedented Nuclear Restart: 2.25 GW of Clean Power for Data Centers In a...
#ai#energy#infrastructure
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munimv24d ago • 2 min read
DOE's rulings on rehearing of its 202(c) power plant orders have all come after the orders expired
Under section 202(c) of the Federal Power Act, the U.S. Department of Energy has kept eight power...
#energy#datascience#opensource#python
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