Hydropower is a clean renewable energy source. Snow and rainfall, creating streams and rivers, renew the source.

Buying Guarantees of Origin from hydropower guarantees that the renewable energy consumed is from this source.

Historically people have used rivers for agriculture and to power watermills and sawmills for example. Today, rivers are re-directed through hydro generators to produce electricity.

Hydropower categories include:

Reservoir production: Water is stored in reservoirs, with the flow controlled to produce an even supply. Pump storage plants pump water upstream during periods of low demand. The water is released when demand is increases.

Run-of-River uses natural river flows, not reservoirs or water storage.

Small Scale Origin hydropower plants are those with less than 20 MW capacity.

A large share of the world’s power production comes from hydropower. In Norway, hydropower represents approximately 95% of the total electric power production. With typically about 125 TWh per annum, this is the highest volume in Europe.

Norway has more than 100 years’ experience and world-class competence in building and operating hydropower plants. Over the past decades, older installations have been upgraded to increase operational efficiency. The operations are also designed to reduce the impact on the environment and help improve local biodiversity.

An estimated 31 GW of new hydropower capacity was commissioned in 2016, bringing total global capacity to more than 1,100 GW. China installed the most capacity, followed by Ecuador, Ethiopia, Vietnam and Turkey.


Meet an environmental standard of your choice

Consume renewable energy meeting requirements of specific standards or ecolabels. Buy Guarantees of Origin from power plants that meet stricter environmental standards and are verified by an external auditor. Choose between national or international ecolabels and standards, document the age and type of the power plant, technology and unique operational focus, and raise funds for renewable energy projects.


International ecolabel for renewable electricity with strict criteria for environmental impact, and that directs funds to new renewable energy projects


German ecolabel for renewable electricity from new or upgraded power plants


An international ecolabel empowering women in developing countries. W+ measures impact on women’s lives.


German ecolabel for renewable electricity from new power plants, with a mix of technologies and fund allocation

Bra Miljöval

Swedish ecolabel with strict environmental criteria

Naturemade Star

Swiss ecolabel with strict environmental criteria

Green-e Energy

Green-e is North America’s leading certification program for renewable energy.


Global standard for design, construction and operation of high-performance green buildings


European environmental building standard for the construction industry

Customise to fit your specific needs

Consume renewable energy with specific characteristics. ECOHZ provides access to a comprehensive portfolio of more than 200 power plants, located across five continents. This enables you to choose specific power plants with distinct characteristics, including choice of technology, location, age, size, and owner profile.