It's looking increasingly unwise to place dams for hydropower in lists of "renewable" energy. Yes, the historic patterns and types of precipitation have made hydrower seem renewable.
And yet, there has been a steady stream of reasonably good evidence that at least some regions, including the Mediterranean of which Spain is part, will likely have to adapt to water levels that will only be renewed at significantly declining levels. If water's availability only at declining levels is defined as "renewable," we need an overhaul of the lexicon.

I agree with Lance. The bills on the table for a federal renewable standard do not include large hydro in the 25% by 2025 goal. Not counting large hydropower, the United States only has 3% from renewable resources. It's going to take an incredible amount of growth in wind to meet these requirements.

The main idea is to create renewable energy infrastructures that work for the US. Weather is solar, hydro, wind, better biofuels, etc. It has to work for us and we need to learn how to adapt to it. Other countries like Spain and Brazil are doing it and adapting, while we sit and watch.

Things look bigger when seen from below. There are so many other incredible ways to reach these objectives. And meet other objectives like Kyoto agreements etc. There is even Kite energy generation.
There are so many things we got to discover. But now we are at a war without a war. climate change is s a huge crisis. and inflation will give is us a cauda venenum. Everything is reneweable, we must open our eyes.

How about saving 30% of the energy need with energy efficiency?

We saved 36% last year with a $1000 investment. Payback 2.2 years. Crank up your own efforts people!