ziga

6 ms·

1.
by ziga 27d ago
To avoid these Claudisms, I asked Claude to add instructions to my AGENTS.md. The first line it added: Avoid the stock LLM register. Sigh.
2.
by ziga 6mo ago
Unless you add battery storage, which is increasingly the case: https://pv-magazine-usa.com/2026/02/25/solar-and-storage-to-...
3.
by ziga 1y ago
> Oh, and also batteries such as the tesla power wall can only be charged and discharged about 1000 times before they have lost a lot of capacity. Powerwall's cycle life is much better than 1000. The Powerwall warranty guarantees 70
4.
by ziga 1y ago
Ah, those are wholesale prices. And the form factor will increasingly be prismatic LFP packs, not cylindrical cells. For buying LFP cells, I would start here: https://diysolarforum.com/
5.
by ziga 1y ago
Grid-scale storage (and increasingly EVs) use lithium-iron-phosphate battery cells, which don't require cobalt/nickel/manganese.
6.
by ziga 1y ago
https://about.bnef.com/insights/commodities/lithium-ion-batt...
7.
by ziga 1y ago
I think 12 years is an underestimate. Lithium-ion batteries will degrade, but they still have usable capacity. There are Tesla Roadsters still going strong, 15 years in. And the battery cell chemistry has since shifted to LFP, which has lon
8.
Analysis of Powerwall Battery Retention(netzero.energy)
2 points by ziga 2y ago|0 comments
9.
by ziga 2y ago
You can't really generalize cycles based on chemistry alone. Battery management and usage matters. But two examples with NCA/NMC chemistry: - The Tesla Powerwall 2 battery warranty[1] is for effectively 3650 cycles (daily cycle fo
10.
by ziga 2y ago
> It accounts for 20% of California’s renewable energy. That doesn't sound right. It seems to come from Wikipedia with a 2019 date, but even then: The Geysers produced 5,543 GWh in 2022 [1]. California generation from renewables: 20
11.
by ziga 2y ago
We need all the renewables we can get, and I think you can have both -- utility-scale and rooftop. Rooftop solar (and battery storage) just needs to be cost efficient to offset the rising cost of electricity and make it a good return on inv
12.
by ziga 2y ago
I agree about home batteries being too expensive, hopefully prices will come down with scale. But the part about battery degradation is not true. Tesla Powerwall has a 10 year warranty[1] with 70% capacity retention. This means that Tesla h
13.
by ziga 2y ago
Dynamic tariffs (aka real-time or wholesale plans) are becoming more common in the UK an EU. These are usually priced by 30-min periods and announced 24h in advance. More modern utilities will offer apps that control when your car is char
14.
by ziga 3y ago
I wanted a better dashboard for my Tesla solar/battery system: https://www.netzeroapp.io/
15.
by ziga 3y ago
PVWatts is a good resource to estimate solar production based on location, system size, roof orientation, etc: https://pvwatts.nrel.gov/pvwatts.php
16.
by ziga 3y ago
Tesla Powerwall is probably the most commercially successful home battery. It comes with a warranty guaranteeing 70% capacity after 10 years, which is not to say it has a 10 year lifetime. It's still early to determine its actual lif
17.
by ziga 3y ago
Lots of variables in sizing a battery system: - Is your goal battery backup or load shifting? - How much backup do you need? - What is your energy usage and peak demand during that time? Peak demand is a big factor: a single Tesla Powerwall
18.
by ziga 3y ago
In case your system is from Tesla: I wrote an app that you can load on a tablet and stare at that energy flow all day :) https://www.netzeroapp.io
19.
by ziga 5y ago
The dbt community will frequently run Snowflake, and its SQL engine is very good. https://medium.com/@jthandy/how-compatible-are-redshift-and-...
20.
by ziga 5y ago
I had the same problem and built this: https://zigam.github.io/ginkgo/
21.
by ziga 6y ago
Also did something similar and generalized it across languages by using Metaphone phonetic encoding (which is biased towards English pronunciation however): https://github.com/zigam/ginkgo/blob/gh-pages/R
22.
by ziga 6y ago
43% according to NYT (includes residents and workers): https://www.nytimes.com/interactive/2020/us/coronavirus-nurs... 55k+ deaths, 296k+ cases, staggering numbers. Out of a 1.3M nursing home population (
23.
by ziga 6y ago
> Less than 1% of the US population is confirmed to have contracted the virus CDC estimates based on seroprevalence data that for every case reported there are actually 10 other infections: https://www.cdc.gov/coronavirus
24.
by ziga 6y ago
Imperial College report showing mobility trends explain over 80% of observed variations in transmission: https://www.imperial.ac.uk/media/imperial-college/medicine/m...
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by ziga 6y ago
> Geeky entrepreneur https://www.linkedin.com/in/bert-hubert-b05452/
26.
by ziga 6y ago
https://www.firecalc.com/ is a good retirement calculator.
27.
by ziga 6y ago
In this study they tracked 104 patients from the cruise ship, from Feb 11 to Feb 25. Started with 43 asymptomatic (41%), went down to 33 asymptomatic (32%). https://www.medrxiv.org/content/10.1101/2020.03.18.20038
28.
by ziga 6y ago
Here’s a paper from the Broad Institute: https://www.biorxiv.org/content/10.1101/2020.04.06.025635v1
29.
by ziga 6y ago
> More than 50% of the people infected with SARS-CoV-19 are asymptomatic (i.e. they have no illness). Note: asymptomatic at the time of testing. They may still develop symptoms over time. https://www.icelandreview.com/sc
30.
An Algorithm for Naming Babies(github.com)
1 points by ziga 7y ago|0 comments

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