SciFidea has simplified and clarified the rules for the Dyson Sphere Science Fiction Writing Contest. You can find all the information here.
In brief, though:
There will be ten grand prizes of $20,000 each for a science fiction work of 30,000 to 100,000 words dealing with a Dyson Sphere. Works that are short-listed but do not win a grand prize will receive $2,000 each.
You have until August 31 of this year to submit your novella or novel.
This is good money. If you're smart and can write fast, it's a terrific opportunity. Don't forget to read every word of the terms, though.
And I should add . . .
You will note that there is NO entrance fee for this contest. Entrance fees are always a sign to employ due diligence. The best way to do this is to check out SFWA's Writer Beware website. You can find a helpful list of their services (with direct links) here.
It goes without saying, but I'll say it again, that SciFidea's Dyson Sphere Writing Contest is the real thing.