Swanson's law Swanson's law Swanson's law is the observation that the price of solar photovoltaic modules tends to drop 20 percent for every doubling of cumulative shipped volume. At present rates, costs halve about every 10 years. It is named after Richard Swanson, the founder of SunPower Corporation, a solar panel manufacturer. Swanson's law has been compared to Moore's law, which predicts the growing computing power of processors. Crystalline silicon photovoltaic cell prices have fallen from $76.67 per watt in 1977 to $0.36 per watt in 2014. Plotting the module price (in $/Wp) versus time shows a dropping by 10% per year.
Unocal Corp. v. Mesa Petroleum Co. Unocal Corp. v. Mesa Petroleum Co. Unocal v. Mesa Petroleum Co., 493 A.2d 946 (Del. 1985) is a landmark decision of the Delaware Supreme Court on corporate defensive tactics against take-over bids. Until the Unocal decision in 1985, the Delaware courts had applied the business judgment rule, when appropriate, to takeover defenses, mergers, and sales. In Unocal, the Court held that a board of directors may only try to prevent a take-over where it can be shown that there was a threat to corporate policy and the defensive measure adopted was proportional and reasonable given the nature of the threat.