New, energy-efficient technologies for sustainable production Before  After Company name: Romvelli OÜ Company description: Põnka Guesthouse in Soomaa National Park offers eco-friendly accommodation and catering, promoting sustainability through natural products, Green Key and Europark certifications, and plans to implement geothermal energy for heating and cooling as a model for sustainable rural tourism in Estonia. ID number on Grant  platform: 2593 …