Windspire FAQ

Noise is not an issue for the Windspire. The sound output is 6 dBA above ambient at 15 mph wind, 6 ft from base. For comparison, light leaf rustling or calm breathing is 10 dBA.

The Windspire rotates at a lower speed than most wind turbines and is more visible to flying birds. So far, we have had no reports of collisions – and we have had one report of a nest built under an active unit.

The total height of the standard Windspire is 30 ft (9.1 m). The rotor height is 20 ft (6.1 m) and the pole base is 10 ft (3 m).

The diameter of the rotor is 4 ft (1.2 m).

Pole bases from 18 inches to 10 ft are available.

Any Windspire can be heightened with a 5 ft , 10 ft, 15 ft (5 ft + 10 ft) or 20 ft (2 x 10 ft) pole extensions. These require larger foundations.

A Windspire site requires land with unobstructed wind and adequate space for installation. The Windspire also needs at least class two winds – ideally class three (an average of 12 mph) – and a tie to the power grid.

The currently available Windspire is grid-tie, which requires the unit to be tied into the local utility grid.

The Windspire is independently tested at Windward Engineering in Spanish Forks, Utah. This testing allows customers to know what level of power production to expect from specific wind ranges. The Windspire received ETL certification as of March 2008 for the U.S. and Canada, which includes UL and IEEE testing.

Warranty Coverage

Mariah Power Inc. warrants the Windspire and all components of the Windspire generating system to be free from defects in material and/or workmanship for a 5-year warranty period, beginning on the date of delivery. This warranty covers the generating equipment against breakdown or degradation of electrical output of not more than 10% from the originally rated output. Should any of the above components fail during the specified warranty period, Mariah Power Inc. will, upon prompt notice and at no cost to the CUSTOMER, diagnose and repair or replace the malfunctioning component of the Windspire or, at the discretion of Mariah Power Inc., repair or replace the entire Windspire structure.

This warranty extends to the original purchaser and to any subsequent purchasers or owners at the same location during the warranty period. For the purpose of this warranty, the terms “purchaser,” “subsequent owner,” and “purchase” include a lessee, assignee of a lease, and a lease transaction.

The Windspire requires no scheduled maintenance, with moving parts designed for a 20+ year life and ball bearings that are greased for life. Durable construction enables it to produce power for 20+ years. A dual-layer paint coat, rust proof spray, and zinc plating are applied for weather protection.