Generating News for your website will develop and build over time. Stepping back and assessing what is going on in the organisation helps to focus on what to write about. If your organisation has several departments then ask one person of each department to suggest something that is happening in the organisation that is worth celebrating and broadcasting. News doesn't have to be in-depth, it has to be relevant and of interest.
Here are a couple of ideas and tips you may want to consider:
Whats happening inside the organisation:
Always try to include some photography in relation to your article. This makes for a more interesting viewing and sometimes more eye-catching for people to take interest.
Then don't forget to Tweet or Facebook a strapline of your news article and link it back to your news page on your website.