That's what high quality sizing data looks like! Sadly had to sell my home with a hybrid heat pump, but the new house is a great opportunity fully electrify with high quality load data! Think I can do 1.5 tons with no backup! #heatpumps

I don’t have a great baseline of what our electric 240V dryer + washer used to pull, but I was pretty surprised to see our #heatpump combo washer/dryer only uses $0.25 cents per load in electricity. And eliminated a building envelope penetration further improving our heating load. #energysky

Using a heat pump dryer/washer combo is an awesome way to help simplify electrification projects! Though I am increasingly an advocate of avoiding heat kits if possible in Canada to minimize peak load.

Chris Taggart 🏡 ⚡️ 🔌@christaggart.com · 8mo ago

We took great pleasure in being able to free up our 240V dryer breaker for heatpump heat kit capacity.

There's so much room to keep innovating in PV - it never stops amazing me.

Commercial Solar Guy@commercialsolarguy.com · 8mo ago

‘New racking places modules in an east-west orientation…new rail mounting system…no longer has maintenance walkways between panels…trolley that moves over the solar modules…load capacity of 300 kg and with a maximum speed of 5 km/h’

It's a very interesting calculus for agrivoltaics, since land opex for PV is already so low and it will typically boost the cost of PV all things equal, but also potentially doubles the value of the land as an asset. It's gotta be designed ag first, and PV second for that reason I think.

On the train all day, a good day to get back into posting nerdy energy commentary. Will start blocking more aggressively for anyone who calls me a fossil fuel shill.

Ah, the problem is not that we fail to provide everyone with adequate housing or services for people with addiction, the *real problem* is that the rest of us are forced to see the results of these things, under the label "social decay". Got it.

Mike Farwell@farwell570.bsky.social · 9mo ago

"The longer visible signs of social decay are allowed to fester, the more inclined those with means will be to simply check out ... leaving those without the ability to relocate to deal with playgrounds littered with drug paraphernalia." www.theglobeandmail.com/opinion/arti...

Of course the fossil fuel sector has slowed the transition, but climate advocacy has also failed by any measure. Digging into old strategies won't work. Time for a rethink. #energysky #climatesky

Michael Liebreich@mliebreich.bsky.social · last yr.

There will be more detail on the failures in part II. In essence it's about exaggerating the science, over-reaching on the solutions, and feeding polarization. Niaru gave a perfect example of blaming "the fossil fuel sector", when it's all of us who buy from them. BTW, I love your and Glen's work!

No. The climate community needs to stop blaming other people for its own failures.

This is the best heat pump explainer video I've ever seen! Great work Drew Tozer! If you like it, bookmark it and share when you see an opportunity! #2wayac #heatpump #HVAC bit.ly/BestHPexplai...

Heat Pumps, Explained (And Why Everyone’s Switching)

What's a Heat Pump? | Simple Animated Explainer 👉 Wondering how a heat pump works? In this short, animated video, we break down the basics of heat pumps--and explain why so many homeowners are switching. In this video, you’ll learn: What a heat pump is How heat pumps work in both summer and winter How heat pumps get heat from cold air How they compare to furnaces and air conditioners Why they're better for home comfort Thinking about installing a heat pump? Visit https://www.foundryheatpumps.ca to get more information. Or buy a copy of Drew Tozer's Amazon #1 Best Seller, Feel-Good Homes: https://www.amazon.ca/dp/1781339163/ #heatpumps #howheatpumpswork #energyefficienthomes #sustainableheating #greenerhomes #hvacexplainer #airsourceheatpump #homecomfort #cleanenergy #netzero #electrification #decarbonization

bit.ly

Please don't do this to your #heatpump...

Vertical configuration helps keep the panels clean. Since 2022, the owners have not cleaned the panels, aided by frequent rainfall and soil that is not dry. Vertical production profiles produce at times when the hourly price of electricity is highest. #AgPV 🔌💡 www.pv-magazine.com/2025/07/11/a...

Winning the AI race won’t hinge on whether hyperscale data centers have uninterrupted power to train foundational models between 6-9am during polar vortexes

Perfection. @costasamaras.com @brendan.bsky.social @kcboyce.bsky.social

Suggesting specific failures in DAC facilities discredits the need for DAC is like discrediting solar power because solar thermal and concentrating solar were found to be cost-ineffective. 🔌💡

David Roberts@volts.wtf · last yr.

Oooof. Those direct air capture machines built by Climeworks in Iceland, to pull carbon dioxide out of the air? Turns out ... they have generated more CO2 than they have captured.

Counterpoint: Techno-optimism alone will fix climate change 😂 Absurdity of both points aside, I think it's important to recognize the very high cost of non-technology solutions that are referenced by this statement. While reducing consumption can help, we can't pretend it's free or painless. 🔌💡

Dr Paul Dorfman @drpauldorfman.bsky.social · last yr.

Techno-optimism alone won’t fix climate change blogs.sussex.ac.uk/sussexenergy...

🚨🚨🚨 The numbers are in! We have #SMR costs estimates back by a regulatory approval! 300MW FOAK is ~$20/W 😳 Total cost: $20.9B/1200MW, or 17.4/W but includes FOAK. So last 900MW are $15/W. Hard to see how it can beat AP1000 at these costs... 🔌💡 www.theglobeandmail.com/business/art...

Ontario’s Darlington SMR project to cost nearly $21-billion

The price is far greater than independent observers deem necessary to spark widespread adoption

theglobeandmail.com

There are lots of things that warrant discussion & debate about AI, but "it uses too much energy" is a short-sighted critique that will appear silly in retrospect.

What's the carbon footprint of using ChatGPT?

Very small compared to most of the other stuff you do.

sustainabilitybynumbers.com

More brilliant insight on the marginal cost of installing heat pumps from Shreyas, and why hybrids can look very attractive to contractors. 🔌💡 #heatpumps

Shreyas Sudhakar@shreyassudhakar.com · last yr.

I was recently looking through the ducted product line chart of Lennox, a large HVAC equipment manufacturer. What stood out to me? There's 17 furnaces, but only 5 heat pump air handlers. 8 one-way ACs, but only 5 heat pumps. 🧵

To coordinate all comms between SPAN cloud systems & the hardware they install. If not, would make it hard for utility to switch aggregators/intermediaries if they (or regulators) decided some other firm could do that at better value. The financial incentive for aggregaotr is get big slice o value

Love to see this. Was too expensive to add 200A service so it drove the decision to use a more advanced, load-reactive EV charger. We really don't need 200A upgrades for electrification folks! 🔌💡

Michael Burjack 🇨🇦@michael.burjack.com · last yr.

Instead, I’m going to peruse a charger that auto-adjusts to available load, which compiles with code for even a 100A service but will charge at whatever spare capacity is available (up to 60A). There are a few options in this space. A made-in-Canada one is evdutystore.elmec.ca/products/sma...

120v low-peak-power electric appliances have a bright future. There still room for innovation in this space, imo.

Harris Berton@harrisberton.bsky.social · last yr.

I don't think we'll ever get to the point where home electrification feels quick and easy. The best path to making cases like this easier are 120V appliances (in this case, a 120V heat pump dryer).

I don't think we'll ever get to the point where home electrification feels quick and easy. The best path to making cases like this easier are 120V appliances (in this case, a 120V heat pump dryer).

Richard Waite@waiterich.bsky.social · last yr.

The number of technicians and steps involved, and cost, were both significant barriers. Hopefully we can soon get to a policy environment where we make it easier for US households to transition off fossil fuels.

I went to my engineering professor's office hours in grad school to learn what reactive power meant. By the end, he said "I dunno Harris...it's just magic..." 🤣 From a policy perspective (which was the angle I was learning engineering from) we settled on it as an aspect of "power quality." 🔌💡

Jesse D. Jenkins@jessedjenkins.com · last yr.

(* or supply/consume reactive power to change real power injection & voltage, but nobody understands reactive power...)

Uncontroversial? • High % renewables bring new grid stability risks. • Those risks seem manageable, but necessary policies/tech/regs are still in flux. • The 🇪🇸/🇵🇹 event was almost certainly multifactorial. Untangling will take time, but… • Early data does imply VRE instability as one contributor.

I spent a lot of happy hours in DC arguing that the idea that industry was "hard to decarbonize" was driven in part by folks misreading the modeling. A 🧵 1/8

Byron nuclear plant in Illinois to undergo $355 million uprate. 6 low pressure turbines will be replaced by two with higher pressure, to increase the power generation by 80 megawatts. $4.4 / watt. The lowest hanging fruit of clean firm power! 🔌💡 www.shawlocal.com/sauk-valley/...

Byron’s 40-year-old nuclear plant to undergo $355M project to increase power output

Constellation Energy, owner of the Byron Nuclear Power Station, plans to invest about $355 million in a lengthy project that will increase the site's power output and extend the life of the facility a...

shawlocal.com

Great post on LinkedIn from @shreyassudhakar.com Anyone thinking through how to lower the cost of heat pumps needs to keep the business model in mind. This is not an equipment cost problem, and opportunities to leverage this structure like midstream programs exist. #heatpumps 🔌💡

Drove through rural southwestern Ontario this morning. Drove by this wind farm with all the blades turned into the wind so they're motionless, despite all the surrounding ones going full tilt. Sure enough, IESO grid is overloaded with wind, cool to see curtailment in practice. 🔌💡

🤦‍♂️ PSA: any existing hydroelectric capacity (or any generating capacity in general) is already spoken for. Even if you are talking new capacity, the number of cheap potential hydro sites is very low, and they are also spoken for. www.bnnbloomberg.ca/business/tec...

Canada has answer to energy needs in AI race, ex-Google CEO says

Canada’s abundant hydroelectricity offers the best way to power booming artificial intelligence servers and win the global AI race — if the country is able to cooperate with the US amid a trade war wi...

bnnbloomberg.ca