The GEMINI principle: double usage of land

No better solar power plant, no better housing possible on the same ground is the ultimate target of the GEMINI principle.






Single family homes vs. big houses Single family homes vs. big houses
Based on energy demand for heating and mobility, the idea evolved that apartment blocks are good and single-family houses are bad.
Contemporary 16 apartment building block
We have to end the time when our energy came mostly from coal mines, oil wells, and gas extraction. So from where should all the energy come from?
Conventional usage with housing and open field PV seperated Conventional usage with housing and open field PV seperated
Let's put the 16 apartment block somewhere on 0.12 ha of land and somewhere else 0.88 ha of open-field photovoltaic systems. 1,670 south-oriented photovoltaic modules with 1.094 MW peak.
Optimized usage for better housing, more energy, and fewer costs Optimized usage for better housing, more energy, and fewer costs
Now let's compare this with an energy-optimized village like the one presented in my paper for CORP 2025.
GEMINI next Generation house type 60 and 70 GEMINI next Generation house type 60 and 70
The number in the house type represents the number of 1,134 mm × 2,378 mm solar modules. We have designed types 50, 60, 70, 72, 80, and 84.
Other advantages: floodproof up to 70 cm and “Option Venezia” Other advantages: floodproof up to 70 cm and “Option Venezia”
Most homeowners will make the decision based on insurance tariffs: What is cheaper, the down payment for “Option Venezia” or the flood insurance?
Compare conventional vs. energy optimized settlements Compare conventional vs. energy optimized settlements
Point-for-point compare why the energy-optimized settlement is far cheaper than the conventional approach. Let's start underground with the underground garage.


  Download:   CORP paper PDF     Slides PDF     Video 189 MB  

  Cost optimization — the key to energy transition and climate protection
Paper written for the CORP.at conference March 22 to 25, 2026, in Vienna. My 2025 participation was a last-minute action, but now I have much time to prepare the paper.

Abstract
To meet the necessary cost optimization targets, we cannot hold the energy problem separate from all other problems: another major problem is housing.
Introduction
Many imaginations about our future had been created in the past with completely different parameters. Unchecked conclusions from the past endanger our future with unbearable costs.
My personal experience with a profitability transition My personal experience with a profitability transition
Birds can fly without knowing all the terms of aerodynamics. I reacted with my design change to an ongoing “profitability transition” without knowing the term at this time.
Energy transition
The long way from random electricity from sun and wind towards 24×365 electricity. Overseen profitability transitions have to be considered as major accidents.
Solar yield and conversion to 24×365 electricity
The wide range of solar yield becomes much wider after the conversion of gross yield to 24×365 electricity. 6 examples from our research of 50 locations.
Off-grid fast charging settlements Off-grid fast charging settlements
It can start small, somewhere in a village, with a single GEMINI house with a big PV carport and 100 kW DC charging.
Energy-intensive industry
I once developed a scale for off-grid solar possibilities depending on photovoltaic size. But now is to make a big jump upwards on this scale: running, energy-intensive industry.
Agriculture: How many square meters does a human need for his food? Agriculture: How many square meters does a human need for his food?
Mankind started as hunters and gatherers. 12,000 years ago, 500,000 m² to 2,500,000 m² per human. With the agricultural revolution, the land use was reduced by 2 magnitudes.
Conclusion
All parameters are in a constant state of change. We have to check all the parameters and predict the development for the predictable future.
References
Roland Mösl: Energy Optimised Settlements – Enabler for Necessary Civilization Targets, Graz 2025


          The GEMINI principle: double usage of land: No better solar power plant, no better housing possible on the same ground is the ultimate target of the GEMINI principle. https://climate.pege.org/2026/gemini.htm