While the total installed price of solar has continued to decline, the price of the solar panels or modules themselves has remained relatively flat since 2012, indicating a decline in non-module costs. Credit: LBNL.
defense. 1  the denial or pleading of the defendant in answer to the claim or charge that has been made. 2  the proceedings adopted by a defendant, or the defendant's legal agents, for defending against the charges that have been made. 3  a defendant and his or her counsel.
Collective defence means that an attack against one Ally is considered as an attack against all Allies. The principle of collective defence is enshrined in Article 5 of the Washington Treaty. NATO invoked Article 5 for the first time in its history after the 9/11 terrorist attacks against the United States.