The beloved brand significantly boosted one of its bestselling folders without obnoxiously jacking up the price.

However, the performance of VAWTs is lacking compared to HAWTs due to low turbine efficiency at downstream caused by large wake vortices generated by advancing blades in the upstream position.

The six-way variable-angle pitch blade on the DD130 is about 12 feet wide. Customers get a choice of a standard 4.6-cubic-yard blade or optional 5.5 cubic yards.