REPP CREST was created through the merger of the Renewable Energy Project (REPP) and the Centre for Renewable Energy and Sustainable Technology (CREST) in 1999. The non-profit organisation supported the growth of sustainable energy solutions through policy research and raising public awareness.


Founded in 1993, the Centre for Renewable Energy and Sustainable Technology (CREST) produced educational materials and ran Solstice, an award-winning online hub to promote renewable energy and sustainable living.

Launched in June 1994, Solstice was one of the first online resources on renewable energy and its efficiency and sustainability. The website became an educational tool for both industry experts and people new to green energy.

With the internet and email still in their infancy, CREST brought more than 70 renewable energy advocate organisations online to create a virtual community for sustainable development.


The Renewable Energy Policy Project (REPP) was created with support from the Energy Foundation and the United States Department of Energy in 1995 to explore methods to increase awareness and take-up of renewable energy.

Based in Washington, DC, the non-profit organisation worked with both states and private businesses to develop renewable portfolios in an effort to improve energy efficiency and cut down on emissions on their path to net-zero.

The organisation advised in all areas, from policy and individual markets to public demand and manufacturing. It aimed to increase awareness of sustainable energy through research and publication, and hosting energy discussion groups involving policymakers and environmental advocates.


REPP acquired CREST in 1999 to become REPP CREST. By pooling the resources of both organisations, it became a major platform for research and publication of timely information regarding sustainable energy.


REPP CREST published over 30 research reports and issue briefs and more than 15 interactive CD-ROMs and other web-based tools. REPP CREST also sponsored green initiatives, hosted seminars and worked with government, industry, and educational institutions to promote renewable and sustainable energy solutions.

Global Energy Marketplace

Much like Solstice, REPP CREST’s Global Energy Marketplace (GEM) was a database hosting sustainable energy information, documents and contacts. Users were able to browse or search for information under the following topics:

REPP CREST Discussion Groups

As one of the first sustainable energy groups to utilise the internet’s early potential, REPP CREST hosted online discussion groups with message boards starting in the mid-90s.

These groups gave the renewable energy movement a place to connect, share ideas and learn about environmental issues around the world. Discussion lists were grouped under the following:

  • Bioenergy: General
  • Bioenergia: General (En Español)
  • Bioenergy: Topics on Bioconversion
  • Bioenergy: Topics on Digestion
  • Bioenergy: Topics on Gasification
  • Bioenergy: Stoves
  • Greenbuilding
  • Green Power
  • PV users
  • Strawbale Construction
  • Powering the South
  • EV Archive

REPP-CREST: A potted history

1993: The Centre for Renewable Energy and Sustainable Technology (CREST) is formed to promote new advances in renewable energy.

1994: Solstice, an online database of renewable energy goes online.

1995: Renewable Energy Policy Project (REPP) launched with support from the Energy Foundation and the United States Department of Energy.

1996: REPP publishes its first report, under the title ‘The Environmental Imperative: A Driving Force in the Development and Deployment of Renewable Energy Technologies.

1999: REPP and CREST merge, the joint organisation now coming under the banner REPP-CREST.

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