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A new development in Chiang Mai, Thailand, reportedly solves these problems. It converts excess power to hydrogen and stores it for use later.
There are four family homes in the Phi Suea House development, as well as several other purpose-built buildings. According to project developer CNX Construction, the homes will be the first in the world to run on solar-powered hydrogen storage.
To achieve this, there will eventually be 114 kW of photovoltaic panels generating around 441 kWh of electricity a day, a partial excess of which will be stored in two 2,000-Ah lead-acid battery banks. Electrolyzers will then convert additional excess power into hydrogen gas by applying an electrical current to water. The hydrogen will then be stored until it is needed, typically at night, at which point it will be changed back into electricity via fuel cells.