Christmas tree power

Index, feed.

[ Date | 2025-11-30 22:59 -0500 ]

I have a Christmas tree. It gets lit on a shedule:

Period On time Off time
Morning 7:00 8:00
Lunch (weekdays) 11:30 12:30
Evening 16:00 23:00
(fallback) 0:00

It can also be turned on or off manually, hence the midnight fallback turn-off action, in case I’m up after 11PM and turn it back on.

That’s nine hours per week day, eight per week-end day, so 9×5+8×2=619 \times 5 + 8 \times 2 = 61 hours per week.

The tree consumes about 165W when lit.

Christmas tree power consumption over a 12-hour period on a late November days

A tree season is about 31 days, or 31/731/7 weeks. Over a season, it’s this many kWh:

0.165×61×31744.6kWh 0.165 \times 61 \times \frac{31}{7} \approx 44.6 \text{kWh}

At Hydro-Québec’s Tarif D of 6,905 ¢/kWh (as of this posting), that’s about $3.08 before tax; not something that is likely to blow the season’s budget. That cost is also probably partially offset by a corresponding reduction in need for heating during what is the cold season.

www.kurokatta.org


www.kurokatta.org

Quick links:

Photos
Montréal
Oregon
Paris
Camp info 2007
Camp Faécum 2007
--more--
Doc
Jussieu
Japanese adjectives
Muttrc
Bcc
Montréal
Couleurs LTP
French English words
Petites arnaques
--more--
Hacks
Statmail
DSC-W17 patch
Scarab: dictionnaire de Scrabble
Sigpue
Recipes
Omelette soufflée au sirop d'érable
Camembert fondu au sirop d'érable
La Mona de Tata Zineb
Cake aux bananes, au beurre de cacahuètes et aux pépites de chocolat
*