LED prices are much more competitive than you put in your calculation. Almost every LED that I see can be had for $5 or less. Best selling on Amazon is a good quality, non-dimming LED for $1.39 when you buy a 16 pack ($22.22 for the pack) https://www.amazon.com/Philips-Non-Dimmable-Frosted-Light-Bulb/dp/B01CAL1EMY/ So LEDs are barely more expensive than household incandescents. The incandescents that I see are now a small Halogen capsule that looks a lot like a G4 pinned bulb, with the pins welded to two metal rods that connect to the round screw base of the typical A style bulb such as A19. You can read this in the description of this bulb for example: https://www.homedepot.com/p/EcoSmart-40-Watt-Equivalent-Eco-Incandescent-A19-Soft-White-Dimmable-Light-Bulb-4-Pack-52601/204848836
So, even incandescents are now “40W equivalent” because of federal law, they had to increase their efficiency and only Halogens are still allowed for regular bulbs (appliance bulbs and some decorative bulbs can still be old style) I have mostly Philips Slimstyle bulbs throughout my house, they are dimmable and consequently they are made to be switched frequently, so whenever not in use, they should be turned off. Being a solid state device, a LED has no problem switching millions of times per second for years on end – that is how you receive your internet data. Cor. Sent from Mail for Windows 10 From: Roger Stockton via EV Sent: Sunday, July 29, 2018 11:56 PM To: 'Electric Vehicle Discussion List' Cc: Roger Stockton Subject: Re: [EVDL] Charging load on the grid (NOT) David Roden wrote: > Incandescents that are used daily burn out fast, and get replaced with > modern CF or LED retrofits. My experience is that if you are in the habit of turning a light on when you enter a room and off when you leave, that CFLs will die *faster* than incandescents. If you leave a CFL on continuously, it will last much longer than if it is switched on and off frequently. I don't yet know if LED bulbs will outlast CFLs or incandscents when they are switched on and off frequently. (See, for instance, <http://wavelengthlighting.com/blog/2013/12/2/lights-out-the-practical-life-expectancy-of-leds>.) > For something like this argument to hit home and get them off their > duffs, they have to able to nod and think, "Sure, that makes sense for > us." > Whether it's accurate or not, does "LEDs pay for the EV's energy" really > do that, do you think? When I was trying to convince my strata corporation to allow me to charge my EV (a conversion), what I found was that many people cannot understand the amount of energy that an EV consumes. They see an extremely large "appliance" and assume that it will consume so much electricity that the lights in the building will dim when it is plugged in, and the electric bill will go through the roof, etc. So, I think the challenge will be in making them understand/appreciate that the energy savings associated with a few lightbulbs can really save enough energy to allow an EV to drive some miles each day. As to the "accurate or not", I think it is not trivial to get an accurate idea of the possible savings. Due to the difficulty buying household incandescents now, I tried a couple of apples-to-apples comparisons using Home Depot (Canada)'s online catalog: 50W GU10 halogen vs 5W LED: - halogen $15.97/6, so $31.94/12; LED $107.88/12. - LEDs cost $75.94 more; at $0.10/kWh, this is the cost of 759.4kWh of electricity - LEDs save 540W/h of use; so it will take 1406.29h, or 281.25 days (0.77yr) at 5h/day with all 12 LEDs on before any saved electricity is available for the EV. - after the breakeven point, each LED bulb used 5h/day will save 225Wh/day, or about 1mi of range 23W CFL vs 14W LED (both 100W equivalent): - CFL $15.97/4, LED $12.97/2, so $25.94/4 - LEDs cost $9.97 more; at $0.10/kWh, this is the cost of 99.7kWh of electricity - LEDs save 36W/h of use; so it will take 2769.4h, or 553.8 days (1.5yr) at 5h/day with all 4 LEDs on before any saved electricity is available for the EV. - after the breakeven point, each LED bulb used 5h/day will save 45Wh/day, or about 1/5mi of range While it is fairly unarguable that *any* amount of electricity saved in our everyday non-EV use lives will allow us to drive an EV *some* distance without increasing our utility bill, I think it is still unclear that there is an economic benefit, which is unfortunate since more people understand dollars than watt-hours or miles of range ;^> Cheers, Roger. _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20180730/e8d5cc6d/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
