Yes, the Lattice Standalone
Power Estimator/Power Calculator requires license. You can use the license of the Lattice
Radiant or Diamond Software for the same. To generate free license for Lattice Diamond Software, visit
http://www.latticesemi.com/en/Support/Licensing.aspx
Go to www.latticesemi.com -> Support -> Licensing -> Lattice Diamond Design Software -> Lattice Diamond Free License -> Click Request a Free License.