You could be rich like me, here's the investment secret.

First you have to accept saving money can be as good a source for money as making it, in fact it's better, since your money stays home with you instead of being sent off to the utility company where the owners take it to hire professional coaches for their kids private schools to kick your public school kids ass in football and debate.

OK CFL, buy those curly lights in a box of 6 or more at big box store for under $2 each now, payback used 1 hour a day 207 days, 4 hrs is 45 days, 12 hours is 18 days.  After that your investement is paid, and your making money.  15 or 20 in a house will make you a couple hundred dollars a year.

Programmable thermostat, set the temp comfortable for only the hours you are home, the rest of the time it drifts.  Pay back about 6 months if you work it seriously and are gone for most the day,  this can make you a hundred dollars a year, if your fuel bills are real high it may be much much more.

Calking cracks around windows, in corners, around doors, gaps in siding.   Wide open here, the calking is real cheap, a few dollars and may save a lot, it may save so little you are not aware, but it saves money.

Solar PV panels.  This is a major expense that I can't invest in due to local covenants yet to be updated.  This could run you a few thousand up to 30k for a big system in a big house.  They pay off is hugh with current prices falling.   But it's only 6 years for most buyers to break even.  Then the next 20 years you keep (with the big unit) $100,000 from the utility, or if you sell what an asset to sell with the house, free energy.

Thats my secret, how I became a 1%er.   My electric bill is about 100 a month while some neighbors tell me they are 400+.  So, lest see, 3,600 a year less, and I ain't humped up in a parka neither, the house is probably only 2 or 3 degrees off theirs in temp.  Good luck, hope you get rich and join me pretending to give a shit about the poor at the charity auction.