12-11-2009, 03:13 AM
For those of you that don't mind getting a little more hands-on, consider a wood burning water heater. I use mine as a backup for my solar instead of Helco (now requesting a 6% increase!!). Wood is the other solar. We get lots of cloudy and rainy days in Puna and guava, wai'wi and dead ohias are like batteries out in the forest with lots of stored up energy in them. A 5 gallon bucket of split wood will get you 40 gallons of very hot water in about an hour and a half.