To light up a 1 kw continuously will require a lot of power. That is 1000 watts an hour for 24 hours , which equals 24 kWh's a day of power.

Most solar cells in full sun are about 15% efficient. Of course you have cloudy days and dark periods and short days in winter.

The sun at best puts out about 1000 watts/ m^2, so if you get 15% of this, you get about 150 watts per square meter.

1000 watt light bulb/ 150 watts = about 7 square meters of 15% efficient panels to run thru the day.

To run thru the night and cloudy periods, count on at least 300-400% storage capacity in batteries and charge inverters to give power back.

So about 21-25 square meters of panels would probably be good. Go to a solar manufacturer website to get specifics. With light trackers and concentrators you can do much better.

It is probably better to get DC powered lights rather than AC lights, so you can use the power directly without an AC inverter and the losses it comes with and costs.

When dealing with solar, you go with solar heat for heating water and space, that is the cheapest use of solar. Then you go with DC lighting and battery storage. Only use an inverter for appliances that require AC specifically, like TV's and computers

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