This is a very interesting question, and I don't think there is an easy answer. If you look at past home trends, "contemporary" styled homes that are not too outrageous are not all that unusual. In fact, open floorplans, a hallmark of the early contemporary style, are a great selling point. I agree with Angela, though, the more unique any home is, the more difficult it is to find comparisons and often to find buyers. Older homes with energy efficient features and their resale vary widely- old solar panels, now outdated by newer technologies and often either in need of repair or not functioning at all, are not a good resale. Older homes with a very energy efficient insulation or roof system are always popular.
How long do you plan to own your home before selling it? In the next 10 years energy efficient technology will probably not change dramatically. In the next 50 years? Obviously some things will be outdated, but you will have saved considerable money (and had a smaller carbon footprint) for a long time.
I would suggest searching area listings to see what kind of contemporary homes are on the market. Look at what green improvements are being advertised most heavily in those listings. Unusual or expensive things, like geo-thermal heat, may catch on more slowly. More common improvements, solar hot water, alternative heat sources or energy efficient green landscaping seem more popular and may have a longer, simpler resale. High quality, energy efficient siding, windows, roofing and foundations are always a great idea.
Best of luck!