wrolpi/scripts
lrnselfreliance cc8afa5370
Add a Solar calculator (#778)
* Add a Solar calculator with offline NASA POWER data

Estimates a solar array's typical-year production from a location and the
panels; everything else has defaults under an optional "Fine-tune" section.

The model works from 12 monthly averages: Klein's average day per month, the
Erbs monthly diffuse fraction, Collares-Pereira & Rabl / Liu & Jordan hourly
split, HDKR transposition for fixed, single-axis and dual-axis arrays, then
PVWatts' ASHRAE incidence loss, SAPM cell temperature, DC power, system
losses and optional inverter.  "Best for the year" and "Best for winter" sweep
the tilt.

Sunlight, diffuse, albedo and temperature come from NASA POWER's 2001-2020
climatology on a 1 degree grid, packed into app/public/data (3.1 MB, ~1 MB
gzipped) by scripts/build_solar_climatology.py and fetched only when the
calculator opens.  Users can replace it with their own monthly values.

Every setting lives in the URL, with defaults left out, so the Share button
shares the whole configuration.

Against PVWatts v8 for a 1 kW fixed array: Phoenix +0.6%, Seattle +8.8%,
Anchorage +8.0% annually; these are recorded as tests.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Open the Solar calculator from the map, pins and current location

The map's right-click (or long-press) menu gains "Calculate Solar
Performance", and each saved pin a sun button; both open the calculator at
that location.  A button beside Latitude fills in the browser's current
location.  Locations are rounded to 4 decimals, and longitudes from a map
panned around the world are wrapped back to -180..180.

The map removed lat/lon/z from the URL when it closed, even after navigating
to another page, which stripped the calculator's location from its URL (and
from links shared with the Share button).  It now only cleans up while the
URL is still a map page.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Add off-grid sizing to the Solar calculator

A new "Off-grid sizing" tab sizes a battery system for the darkest month
from a list of devices (watts x hours per day):

- Battery bank for a number of days without sun, for LiFePO4 or lead-acid,
  at 12, 24 or 48 V.  Outdoor lead-acid is enlarged for the cold; outdoor
  lithium warns against charging below 0 C.
- Panels needed, from the worst month's DC production per kW at the chosen
  angle, with a button to apply the count.  A PWM controller's loss (battery
  voltage over the panel's Vmp) raises the count.
- Charge controller current, and the string voltage on the coldest morning
  against the controller's limit, since cold panels exceed their rated Voc.
  The coldest morning defaults to 25 C below the coldest monthly average.

All inputs live in the URL like the rest of the calculator.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Bump wrolpi-help for the Solar calculator help page

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Credit NASA POWER as it asks, and say how the data was changed

- The calculator gains a "Data attribution" link under the location with
  NASA POWER's requested acknowledgment, the data reference (Climatology API
  v2.10.0, downloaded 2026/10/04), the CC BY 4.0 license, and how WROLPi
  modified the data (rounded to one byte per value, temperature averaged
  into 1 degree cells, interpolated between cells), which CC BY 4.0 requires.
- The build script writes the same text to solar-climatology.LICENSE.txt
  beside the data, with the API version taken from NASA's responses and the
  date the tiles were downloaded.  A test keeps the page and file in step.
- Bumps wrolpi-help for the updated attribution in the help page.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Solar: fix PWM sizing, Voc sign, unit switching and loading on review

- PWM usable power now uses the string's voltage (Vmp x panels in series),
  delivers nothing when the charging voltage is at or above the string's Voc,
  and falls off between Vmp and Voc.  The "too little voltage" warning covers
  PWM as well as MPPT.  Previously two panels in series counted double, and a
  panel that could not charge a 48 V bank counted as fully usable.
- A Voc temperature coefficient entered without its minus sign is treated as
  negative, in the math, the URL and the input, so the cold-morning check
  cannot be made too generous.
- Switching Fahrenheit on or off converts the entered temperatures instead
  of reinterpreting them.
- While the sunlight data downloads, the off-grid tab shows a loader rather
  than asking for a location, and holds the cold-morning verdict until the
  site's temperatures are known or one has been entered.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Solar: move the data attribution to the bottom of the page

The full NASA POWER acknowledgment, license and changes now sit in a small
"Data attribution" section at the end of the calculator, always visible,
instead of behind a link under the location.  The source line under the
location points to it.  Bumps wrolpi-help to match.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Solar: drop the data source line under the location

The attribution at the bottom of the page is enough.  The line under the
location now only appears to report the data's state: loading, failed to
load, or replaced by the user's own values.  Bumps wrolpi-help for the
refreshed screenshot.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-04 18:36:45 -06:00
..
api_perf.py files: SQL FileGroup compare, stem column, drop unused discovery path (#713) 2026-09-18 08:57:56 -06:00
api_perf_compare.py Fix API stalls: non-blocking switch worker, threaded searches, indexed Videos page (#678) 2026-08-29 16:17:53 -06:00
api_perf_hosts.example.json Fix API stalls: non-blocking switch worker, threaded searches, indexed Videos page (#678) 2026-08-29 16:17:53 -06:00
build_app.sh Bake the app build into images; rebuild on-device only when stale (#536) 2026-07-15 15:19:25 -06:00
build_solar_climatology.py Add a Solar calculator (#778) 2026-10-04 18:36:45 -06:00
check_database_integrity.sh check_database_integrity.sh: address greptile review 2026-07-22 19:47:48 -06:00
cleanup_orphaned_tags.py Creating script to clean up orphaned tag files. 2026-02-28 17:05:02 -07:00
delete_downloads.py Many fixes split out from the feature/unified-query branch. Installing diagnostic tools in the built images. Displaying video comment statistics. Echoing error when install.sh fails. 2024-04-14 13:13:30 -06:00
delete_similarly_named_videos.py scripts: set exec bit on delete_similarly_named_videos.py 2026-07-22 19:47:35 -06:00
dev_build.sh Postgres -> SQLite hard cutover: the database moves into the media directory. 2026-07-12 14:09:37 -06:00
find_and_convert_srt_to_vtt.py Adding option to ignore errors in find_and_convert_srt_to_vtt.py. 2023-08-04 08:36:30 -06:00
find_and_rename_orphan_video_files.py Bumping version for new feature. 2022-12-07 18:15:28 -07:00
find_corrupt_videos.py Postgres -> SQLite hard cutover: the database moves into the media directory. 2026-07-12 14:09:37 -06:00
fix_media_permissions.sh File permissions fix script checks for exfat and other file systems before trying to repair, displays a warning and gives advice on how to fix the issue. 2026-03-05 18:18:53 -07:00
generate_certificates.sh Certificates: only include SANs permitted by the Root CA name constraints. 2026-07-05 12:38:08 -06:00
generate_subtitles.py Creating script which finds all SRT files and converts them to VTT. 2023-08-03 22:36:11 -06:00
install_debian_12.sh install: always install serve; resolve it via PATH in wrolpi-app 2026-07-23 18:21:58 -06:00
install_help_service.sh Replacing Tag names with escaped tag names to avoid errors in Tags Directory. 2024-10-16 18:56:10 -06:00
install_protomaps.sh Remove stale Postgres references after SQLite cutover. 2026-07-18 13:28:54 -06:00
install_raspberrypios.sh install: always install serve; resolve it via PATH in wrolpi-app 2026-07-23 18:21:58 -06:00
renew_certificates.sh Certificates: help.sh validates the CA and leaf certs; fix renew exec bit. 2026-07-09 16:00:43 -06:00
reset_api_db.sh Postgres -> SQLite hard cutover: the database moves into the media directory. 2026-07-12 14:09:37 -06:00
reset_tags.sh Postgres -> SQLite hard cutover: the database moves into the media directory. 2026-07-12 14:09:37 -06:00
reset_virtual_environments.sh upgrade: rebuild venvs after a Python major-version change 2026-07-20 09:08:30 -06:00
search_order_perf.py search: don't COUNT(*) OVER() the page query (#702) 2026-09-12 14:44:30 -06:00
singlefile_browser_wrapper.sh Single file deno (#478) 2026-06-12 17:07:28 -06:00
singlefile_to_archive.py A Channel can be tagged with a single Tag. The Channel can be moved into a Tag Directory according to the config. 2024-10-16 18:56:19 -06:00
start_kiwix_serve.sh zim: address PR review — config race, YAML null, path traversal, pinned build 2026-07-20 19:10:09 -06:00
upgrade.sh upgrade: rebuild venvs after a Python major-version change 2026-07-20 09:08:30 -06:00
upgrade_yt-dlp.sh Creating script which updates yt-dlp in the wrolpi venv to the latest available. 2025-01-23 17:46:37 -07:00
wrolpi-usb.sh Docs: recommend Raspberry Pi Imager instead of Etcher. 2026-07-03 18:58:54 -06:00