Stumbled upon Fair Isle, the most remote island off of Great Britain, with 68 year round residents. They are using wind for much of their power production, and use two separate grids for constant power and for flexible power, used for heating and non-essential uses.
links at Wikipedia and Fair Isle Electricity . There may be something for us to learn there.
I have been reading Withouthotair.com which has a very good book about renewable energy. Read about Fair Isle on page 198 of the pdf download. If you use the page numbers in Adobe Reader, it is located on p. 211 (out of 383)