Why everyone does not use solar panels?

the use of solar panels is limited to cost per kWh of electricity and cost of energy storage.

Solar panels of the size 1 kW can produce at most 25% of installed capacity since we only have effective sunlight at most 6 hr per day. It is suit for peak demand reduction over day time, hence, good for grid connect only. Energy storage in battery is a proved cost ineffective since battery life is limited to about 4 years.

Renewable energy of the future should be base on biomass, hydropower and nuclear when necessary. The solar panels should be use as intermittent power source in combined with wind power.