Rant: Saw a building cut its power bill big time after a regen drive retrofit

I mean, I was helping with a service call at this office tower last month, and they showed me the numbers from their new regen system. Idk, maybe it's just me, but I had no idea how much juice these things save on the way down. It's like every elevator trip can now put energy back into the building's grid. That's a game changer for cutting costs and being greener, for real.

4 comments

4 Comments

karencampbell28d agoMost Upvoted

Totally believe it. The savings add up way faster than you'd guess.

ryan621mo ago

Yeah that bit about putting energy back into the grid is wild. We have some older lifts in my warehouse and you can just feel the heat they throw off when they stop, which is basically wasted energy going into the air. Seeing the actual numbers from a retrofit really makes it click how much cash that waste adds up to over time. It seems like one of those upgrades that pays for itself faster than people expect.

karen_sanchez1mo ago

That heat Ryan62 mentioned from the old lifts is a sneaky extra cost too. People forget that all that wasted energy warming up the machine room just makes the building's AC work even harder. So a regen system doesn't just save on the lift's power, it also cuts the load on the cooling systems. Ever notice how much hotter those old elevator equipment rooms get?

the_ben1mo ago

My old boss claimed these systems cut energy use by half, but he also said the break room coffee was "gourmet." Ryan62's right about the heat, but it's just warm air in a closed room, not a space heater. How much money are we really talking about saving per month, like a few hundred bucks split across the whole building's bill? It feels like one of those things that sounds amazing on paper but the real world payoff is pretty small. Did they show you the math or just the final number they wanted you to see?