How about ecotourism associations? Don’t they have member directories that anyone can see? Of course they do, though not all are open to views from non-members. But this is one way to do your search.
For example the United Nations World Travel Organization (UNWTO) has an affiliate directory, you can narrow your search by country.
The Rainforest Alliance – http://www.rainforest-alliance.org/faqs/what-does-rainforest-alliance-certified-mean
The EU EcoLabel – http://ec.europa.eu/ecat/hotels-campsites/en
In the UK there are many opportunities for “green” and “organic” vacations. Click here to learn more about a useful directory created by a local writer from Yorkshire –
Here are some national ecotourism organizations with listings of green facilities in their own countries:
For the UK http://www.green-tourism.com/go-green/
For Portugal http://greenstays.pt/shop/?lang=en
For Kenya – http://www.ecotourismkenya.org/facility.php
Coming up in Part 3 – What to Look for in a Green Lodge
Guest Writer Bio: Deborah Regen is the publisher of a website directory and blog dedicated to consumer information about ecotourism and sustainable travel. She also sends out a free monthly e-newsletter to subscribers including notices of giveaways. Site URL = https://www.EcoTourLinQ.com and her email = email@example.com