Green building - Irish zero carbon home creates surplus energy

You can go green and conserve energy, and the planet, without going extreme, by making the house airtight.

First of all, air tight homes have serious problems with moisture, which Ireland has a lot of. Moisture causes black mold which is a serious problem in America. Another problem is radon, or radition, which is caused by lack of ventilation. Radon can cause cancer. Next is dry rot. Lack of ventilation causes dry rote in wood. In the 70's, I work on a job, where the house was sealed up as tight as a drum, we had to remove the entire roof rafters and joist. I have a rule of thumb for green tech. It too expensive, and does not work.

I don't think it looks attractive either.But I guess it was an experiment to get as close to zero use of energy as possible given that unique position.

Some explanation to the design is needed. It could not be described as attractive, if near zero energy. There is no need to have a home look like a warehouse to obtain these efficiencies.