Over 50 Israeli companies have joined the Autodesk Clean Tech Partner program, gaining access to the company’s 3D engineering software valued at $150,000 for a nominal fee of $50, the company announced Wednesday. The program is intended to give cash-strapped innovators at clean tech start-ups access to some of the most powerful software in the field, which gives the a shot at competing with big companies.“Clean tech innovators should have incredibly powerful design tools for solving the world’s most difficult problems,” says Autodesk CEO Carl Bass.