Chapter 5-Solar Electric VS. Solar hot water

There are two things to consider when choosing between solar hot water and solar electric panels-climate and payback time.

Solar electric panels tend to have a longer payback time.On the other hand,they last longer  than the solar hot water panels.Solar electric panels are often warrantied for 25years,but they have been known to contivue working for 40years,with less than 20%drop in energy production.

If you live in a hot and sunny climate,solar hot water is considered an excellent investment.It can break even in 3-8 years,and in some climates will supply 70% of your winter hot water needs and 90% of your summer needs.

Solar hot water is less expensive than solar electric,and can work even in states with colder climates,For example,many solar hot water panels have been successfully installed in New york,New Jersey and Canada,all places where it snows in winter.

Solar electric panels work slightly better in cold and sunny climates.As they are harvesting sunlight energy rather than heat,Low temperatures are not a problem.

The advantage of solar electric is that is not only supplies you power,you can sell excess power back to the grid.The peak production time for solar panels is from 10-3pm.This is when most people are out of the house.

During this time,your solar panels are producing energy that isn't being used-if you're out,the lights are off,appliances aren't running.So this excess power can be sold back to the grid.If you have batteries,this power can then charge your batteries.

You could also invest in solar hot water and solar electric.If you are building a new house,this may prove very cost effective.