Sustainable energy system with zero emissions of GHG for cities and countries

• Energy supply problems in old and new cities, environmental issue.
• Replacement of present fossil fuel based on “Sustainable energy system”.
• Basic characteristics of a new system and justification of the proposal.
• Only three main energy carriers: renewable electricity, sin-methane and sin-methanol.
• Coexistence with present energy system and economics.

Many documents in EU and other countries in the world are dealing with changes in energy system, with final goal of attaining greenhouse gases (GHG) emissions reduction. Vision of the new Sustainable Energy System (SES) is based on the carbon recycling using solar and planetary energy. SES is based on the existing infrastructure and known chemical reactions. With regards to available renewable energy resources (RES) it is unrestricted in comparison to present fossil fuels use.The proposed SES consists of the three main energy carriers, needed in any settlement: electricity from RES, synthetic methane (CH4) and synthetic methanol (CH3OH). The last two are the only energy carriers in nature with one carbon (in our case from biomass) with four hydrogen's (coming in the future from electrolysis of water or other solar processes). To these two, we can add transitional hybrid fuels dimethylether (CH3OCH3 – consisting of one oxygen and two methyl groups – two carbons and six hydrogen atoms) and synthetic diesel, produced from cities’ organic waste and biomass. All these energy carriers can be used in the existing energy transformation equipment in industry, transportation and buildings. SES has no GHG emissions, because CO2 and water are recycled in nature.