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UL 3700 Explained: The Safety Standard That Makes Plug-In Solar Legal | PlugInSolarUS

UL 3700 is the safety certification every plug-in solar law references. Learn what it covers, why it matters, which systems are certified, and how it differs from UL 1741.

pluginsolarus.com

A story of cause and effect: Last November, Ontario banned cities from using speed safety cameras to issue tickets. Reckless speeding immediately surged in Toronto, Ottawa, Guelph, and cities throughout the province. A 🧵 about my latest in Bloomberg (gift link)

What Happens When Speed Cameras Get Shut Off

In 2025, Ontario banned automated traffic enforcement. Now the number of drivers exceeding the speed limit has surged, according to traffic data.

bloomberg.com

Today, August 4, 2026, is the setting of Ray Bradbury’s short story “There Will Come Soft Rains” about a fully automated house continuing on after the family who lived there and the world around it died in a nuclear blast.

There's a Nathan W. Pyle comic for that

FuzzyWuzzy in Toronto🇨🇦@fuzzywuzzyto.bsky.social · 3d ago

When you watch the spoon sink slowly into your bowl of chili and disappear.

Anyone casting doubt on the effectiveness of filtration on the reduction of respiratory diseases ought to have a word with pig farmers because pigs get appropriately sized air filters in crowded spaces porkgateway.org/resource/pri...

Principles of Air Filtration for Swine Facilities - Pork Information Gateway

Air filtration is a commonly used biosecurity practice to minimize the spread of airborne diseases. Common airborne diseases include Porcine Reproductive and Respiratory Syndrome Virus (PRRSV), Mycopl...

porkgateway.org

When we booked our Algonquin backcountry trip I was disappointed because a full moon would make for poor stargazing. Had NO idea the full moon would rise in the east opposite in the sky from the sunset an hour earlier. Absolutely stunning. Photos can't really capture it.

Reminder to get out and touch moss

Attention single-stair/missing middle people: as part of OBC review, the Province has opened a consultation on the Building Code, seeking to “identify ways to reduce unnecessary costs, delays, complexity, and administrative burden”. Runs to August 14. ero.ontario.ca/notice/026-0744

There's still six Tuesdays before August 30. That's six T.A.C.O. Tuesday opportunities.

Unusual failure mode to have a vehicle split in half. Is that intentional, or a consequence of other design choices?

Cybertruck Split In Half After Moving Truck Slams Into 10 Cars On Highway

A chaotic multi-vehicle pileup in Silver Spring, Maryland left a trail of mangled metal on Saturday afternoon, and one of the more eye-catching casualties was a Tesla Cybertruck that ended up torn cle...

yahoo.com

Use PM2.5 µg/m3 metrics to compare. Excellent: Air Quality Ontario www.airqualityontario.com/aqhi/locatio... Very good: QuantAQ - use Desktop mode app.quant-aq.com/map Good: Purple Air - map.purpleair.com/air-quality-... & IQAir www.iqair.com/ca/air-quali...

A Redditor put together some instructions on on how to make an optimized 1-filter air cleaner using a box fan from my experimentation several years ago. It's in a Google drive folder here: drive.google.com/drive/folder...

Working outdoors? Child at outdoor day camp? Anyone outside for 6 hours today in Southern Ontario will be effectively smoking three cigarettes during that time. More if you're active. Twelve cigarettes over a full day. map.purpleair.com/air-quality-...

Don't forget your respirator if you're going outside — Toronto currently has the second-worst air quality on the planet. Temperatures are also expected to reach a high of 29 and the UV index will be at nine, which is very high, according to Environment Canada. Follow here for live updates:

Toronto air quality live: Ontario wildfire smoke continues to smother the city; orange-level warning persists

Toronto is currently ranked third for most polluted air in the world on IQAir.

thestar.com

Brantford is now at 500 μg/m3!! GET INSIDE!

Sarnia is unaffected by wildfires as the Minister makes his speech about sovereign energy pipelines there. Meanwhile, Kitchener's air is downright hazardous.

Jenny Lee Shee@jennyleeshee.bsky.social · 3w ago

In case you were wondering what Stephen Lecce, Minister of Energy and Mines, is doing today as wildfires rage across the province, he's complaining about the heat while making a pipeline announcement. www.youtube.com/watch?v=Eplp...

LOL www.ft.com/content/3a02...

Brantford has the worst air quality of all Ontario Ministry of Environment stations right now at 220 μg/m3 Wear an N95 or equivalent mask there!

Forest fire smoke in Ontario has cut air temperature 4-5°C than forecast, greatly reducing electricity demand today. You can see the areas with clear sky in Norfolk County near Lake Erie are around 32°C while Toronto is 28°C. Normally Toronto is one or two degrees warmer.

or check out additional data from our network of low-cost sensors from QuantAQ Modulair sensors in the GTA app.quant-aq.com/map

Reminder that ASHRAE has a page dedicated to protecting building occupants from wildfire smoke. www.ashrae.org/technical-re...

The definitive government source for ground level pollutant measurements in Ontario is down, presumably due to high traffic volume. www.airqualityontario.com/history/poll...

Hey Toronto area forest fire followers and air quality nerds, there's a new data set for local PM10, PM2.5, and CO measurements at U of T sites, using QuantAQ sensors: tame.physics.utoronto.ca/surface-aq-d... /1

Canada's NWT is 🔥 firesmoke.ca

That was fast! Pedantry isn't necessarily bad. My work here is done 👍

David Elfstrom 🍁@davidelfstrom.bsky.social · 3w ago

Ontario has scheduled the Save on Energy demand response programs to activate between 5 and 8 PM EDT. Picky nerd alert—it's megawatt, not megawatt-second, so please don't add the 's' on the end of the unit, IESO. 🤓 /5

Why I’m a fan of the Oxford comma.

Despite most of solar power generation in Ontario being hidden to IESO, the control room can still see the impact of weather (such as clouds) moving over populated areas with distributed solar PV generation. If you get an opportunity to tour the control room, do so! Very impressive.

IESO Control Room B-Roll

YouTube video by Ontario IESO

youtube.com

Adam Scott@adamscott.bsky.social · 3w ago

A reminder to all following along: IESO has no visibility on the majority of installed solar #PV in Ontario, as it's mostly on the distribution grid (and IESO only tracks transmission generation) There is roughly 2500MW of installed PV capacity which is invisible and appears only as lower demand

Good morning Ontario gridwatchers on the hottest day of the year. Let's see how this plays out. /1

Opened this up expecting to see Northfield Drive in Waterloo, and wasn't disappointed bsky.app/profile/davi...

Momentum Magazine@momentummag.bsky.social · 3w ago

30 of the World’s Worst Bike Lanes That Should Never Have Been Built. Bike lanes should not make things worse, but they often do by going nowhere, by leading bike commuters into trouble areas and by encourage cyclists with the promise of safety then not delivering. momentummag.com/30-of-the-wo...

I pictured a modern art installation when reading my daughter's packing list