Without running AC or electric heat, a 10 kWh battery alone can power the critical electrical systems in an average house for at least 24 hours, and longer with careful budgeting. When paired with solar panels.
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The government subsidies for solar power energy projects have been considered "unsustainable" as the costs of subsidizing a rapidly growing industry are massive and some of China's struggles dealing with the costs have become visible. The renewable energy fund, which is paid by consumers, has a 100 billion yuan deficit while tariff payments have occasionally been paid late. Government subsidies for solar power have also been attributed to over construction, as many.
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