For years, clean energy developers could look to only a small handful of corporations as project partners or customers for their power. Mostly, there was Google, and a few other high-tech companies that worked directly with wind and solar developers to help green their energy use.

Now, that appears to be changing. On Tuesday, Hewlett-Packard announced a 12-year contract to buy 112 megawatts from a wind farm that SunEdison is expanding in Texas. That is enough, HP said, to operate its data centers there, the equivalent of powering 42,600 homes each year.

The deal follows a flurry of other recent agreements. In February, Kaiser Permanente announced a 20-year contract to buy 153 megawatts of wind and solar power from two California farms. A month later, Dow Chemical said that it would buy 200 megawatts of wind power in Texas.

And last week, Amazon Web Services said that it was contracting with Iberdrola Renewables to build and operate a 208-megawatt wind farm in North Carolina, the state’s first at utility scale.