#4 -
Renewable Energy > RE General Discussion > Re: Renewable City Generation
Robert, to answer your question from my personal perspective, I would love to have a grid-tied system because for every kWh I would put back into the grid, that's 1-3 kWh worth of fossil fuel not being burned at the power plant. As it stands, I have a tiny off-grid system that I am playing with, but can't power much with it.
Also, being tied to the grid, enables you to install a smaller system that only supports part of your load. That system can be expanded over time to meet all of your needs, but many places don't have enough usable solar area to meet their needs. Grid-tie systems (at least those without battery backup) require less maintenance than a system with batteries that need to be replaced every 5 or so years. They are also easier to design because you do not have to meet your load precisely or provide backup generators when the sun isn't enough.
Loosing power once in a while is not a big deal for most people. My electric company shut down power for about an hour for maintenance this past week and even though I was aware, I forgot to do anything about it. All I had to do to recover from the outage was power on one computer (DVR) and reset the clocks on the microwave and oven.
And finally, I would consider it helping out the local community by providing them with clean power when my production exceeds my load.
I hope this helps you see the bigger picture and you can sleep better.