Ray Hohenstein
@rchohenstein.bsky.social
Here for Energy Twitter 2.0
Don’t take fishy smells lightly!
July 7, 2025 at 4:53 PM
Don’t take fishy smells lightly!
We had been plugging our PHEV into a garage outlet w/ a level 1 charger. Noticed a fishy smell in our house. Thought maybe it was a dead mouse. Turns out it was melting insulation from an overloaded circuit. Could have easily caused a house fire.
July 7, 2025 at 4:53 PM
We had been plugging our PHEV into a garage outlet w/ a level 1 charger. Noticed a fishy smell in our house. Thought maybe it was a dead mouse. Turns out it was melting insulation from an overloaded circuit. Could have easily caused a house fire.
I look forward to your reply
March 13, 2025 at 6:24 PM
I look forward to your reply
And yes - fully agree - the pace of the duration change is a key consideration. One thing I see is that, given how fast $/kWh storage costs have come down, longer duration needs are coming up rapidly. 8hour durations seems finally to be a real demand in many countries.
November 22, 2024 at 8:48 PM
And yes - fully agree - the pace of the duration change is a key consideration. One thing I see is that, given how fast $/kWh storage costs have come down, longer duration needs are coming up rapidly. 8hour durations seems finally to be a real demand in many countries.
When energy markets begin to incentivize longer durations more consistently, we will see products that are optimized for longer durations (so lower $/kWh)... because building a 4h battery when you only need 24h is a lot of extra power conversion, fusing, busbar, etc. cost for no benefit.
November 22, 2024 at 8:48 PM
When energy markets begin to incentivize longer durations more consistently, we will see products that are optimized for longer durations (so lower $/kWh)... because building a 4h battery when you only need 24h is a lot of extra power conversion, fusing, busbar, etc. cost for no benefit.
No, the hardware doesn't need to change to achieve longer durations. A 2h or 4h duration battery can also discharge more slowly, 10h or 12h or 24h, with the same equipment.
You can consider a 4h battery to also be a 24h battery, with the ability to boost power when needed.
$/kWh will be the same
You can consider a 4h battery to also be a 24h battery, with the ability to boost power when needed.
$/kWh will be the same
November 22, 2024 at 8:48 PM
No, the hardware doesn't need to change to achieve longer durations. A 2h or 4h duration battery can also discharge more slowly, 10h or 12h or 24h, with the same equipment.
You can consider a 4h battery to also be a 24h battery, with the ability to boost power when needed.
$/kWh will be the same
You can consider a 4h battery to also be a 24h battery, with the ability to boost power when needed.
$/kWh will be the same
I'm rooting Element on, for the good of so many things I would love to see them succeed!
November 22, 2024 at 7:38 PM
I'm rooting Element on, for the good of so many things I would love to see them succeed!
What is the technical diligence behind the current state of health of these batteries, and how trustworthy is the performance guarantee?
Whose balance sheet backs the warranty?
How do the economics net out vs. new batteries and vs. recycling?
Whose balance sheet backs the warranty?
How do the economics net out vs. new batteries and vs. recycling?
November 22, 2024 at 7:38 PM
What is the technical diligence behind the current state of health of these batteries, and how trustworthy is the performance guarantee?
Whose balance sheet backs the warranty?
How do the economics net out vs. new batteries and vs. recycling?
Whose balance sheet backs the warranty?
How do the economics net out vs. new batteries and vs. recycling?
Yes and we won't need paid actors to do it either
November 22, 2024 at 5:58 PM
Yes and we won't need paid actors to do it either
And thanks to @praveenkathpal.bsky.social for framing the question to me over chat the other day
November 22, 2024 at 5:39 PM
And thanks to @praveenkathpal.bsky.social for framing the question to me over chat the other day
Essential reading on this topic from @colleen-lueken.bsky.social , and keep in mind the economics are an order of magnitude better today vs. 5 years ago: blog.fluenceenergy.com/fluence-ener...
Beyond Peaker Replacement: Solar+Storage Finds a New Job
Utility-scale solar-plus-storage is an economically viable alternative to natural gas peaker plants. Fluence teamed up with a group of MBA students from Carnegie Mellon University to detail solar plus...
blog.fluenceenergy.com
November 22, 2024 at 5:39 PM
Essential reading on this topic from @colleen-lueken.bsky.social , and keep in mind the economics are an order of magnitude better today vs. 5 years ago: blog.fluenceenergy.com/fluence-ener...
Think about it this way, you can get a >10+ hour duration storage system today at $1,600/kW, with the added feature of a "power boost" mode that 5x's your MWs for up to 2 hours, to take advantage of those shorter term price spikes. Not a bad deal!
November 22, 2024 at 5:39 PM
Think about it this way, you can get a >10+ hour duration storage system today at $1,600/kW, with the added feature of a "power boost" mode that 5x's your MWs for up to 2 hours, to take advantage of those shorter term price spikes. Not a bad deal!
Not seeing a publicly-available datapoint I can point to that's not too expensive. But let's just say, if you're active in real storage transactions today, your answer will be well north of 10 hours
November 22, 2024 at 5:39 PM
Not seeing a publicly-available datapoint I can point to that's not too expensive. But let's just say, if you're active in real storage transactions today, your answer will be well north of 10 hours