OverviewSecond-generation technologiesBackgroundFirst-generation technologiesThird-generation technologiesRenewable energy industryNon-technical barriers to acceptancePublic policy landscape
Second‑generation technologies have shifted from niche interests to a significant economic sector in countries including Germany, Spain, the United States, and Japan. Large industrial companies and financial institutions now participate in this area, and the ongoing challenge is to expand the market base to support continued global growth.