Our project on Renewable Sources of Energy began in September 2018. The partnership consisted of five schools - from Poland, Italy, Spain, Turkey and Norway. As we are all concerned about the climate changes and air pollution, we decided to conduct a project aiming at making alternative sources of energy more popular and better-known among local people, making our students more ecologically aware and contributing to the fight against the air pollution and climate changes in Europe. So, the idea emerged that schools from across Europe, from the North to the South and from the East to the West should create a partnership to exchange good practices. Our school - Zespół Szkół Budowlano-Drzewnych in Żywiec, Poland - looked for similar schools in other EU countries teaching subjects connected with environment protection and RES application. We found schools in Italy, Turkey, Spain and Norway willing to cooperate internationally in order to achieve the assumed goals. About 100 students, aged 14-19, were involved in the project as well as many teachers and experts. We planned and carried out international meetings in every partner school involving different activities, like trainings, classes, lectures, multimedia presentations and workshops connected with presenting, spreading knowledge and popularising the benefits of using the renewable sources of energy.Each partner school organised an international LTT meeting for students and teachers, during which many activities were carried out – visits to companies producing elements of RES and institutions responsible for constructing, implementing and installing them. Not only schools but also many local authorities were involved in actions connected with the project, for example politicians, ecological activists, experts and university scientists. We were guests at Town Halls or Regional and National Members of Parliament were our guest during international LLT meetings. We visited power plants, university departments and natural reserves where we could observe and discuss the benefits of using RES. We took part in many ecological events, for example planting trees or bicycle ride through the city centre showing alternatives to using cars. The first international meeting we organised was the staff training meeting in the Beneficiary's school. All the coordinators and teachers had a chance to discuss different issues regarding the project subject, learn about legal solutions and regulations connected with the topic. We started using social media (Facebook, Instagram, schools' websites) for the purpose of the project results dissemination by creating fan pages and we also started working on eTwinning platform project. Before and after every international LTT meeting, students and teachers worked together on preparations of all the activities, learning about RES advantages and benefits for the environment and also about the culture of the countries involved. Every partner school organised an eco-picnic for parents, students and school employees after the meeting to summarise it and discuss the results as well as to present them to the local society. Students were preparing multimedia presentations, school gazettes and other educational materials for their peers, parents, other school teachers and guests invited to school. They were working on the eTwinning project and published posts on Facebook and Instagram fanpages. Information on the project activities was published on each partner school's webpage and on webpages of local authorities and self-government offices. We gave interviews for local radios and newspapers. Teachers prepared plans of lessons to be used in classes long after the project is finished together with gathered presentations which can also be used in different awareness campaigns in the future. We created a leaflet which can be printed and handed in. At the stage of the project application, we planned that we would exchange our experiences and gain knowledge first and after that we would disseminate the results of our activities. Unfortunately, due to the force majeure – the outbreak of COVID-19 pandemia and, in the result of it, lockdowns and closing of all schools and other institutions, we were not able to perform certain activities, fulfil the plans and reach some of the goals. We were forced to cancel the last summary meeting in Poland, where we planned a huge gathering and presentation of the results to the citizens of our town at a main market square during an eco-picnic for local people and there were supposed to be meetings with local authorities including discussions on the topic of air pollution in our area, visits to hydropower plant, RES department of AGH Kraków University as well as workshops, classes and lectures on heat pumps and geothermal energy among others. After the meeting cancellation, all we could do in this situation was the online cooperation of partners and organising a virtual summary and farewell meeting on the Internet.