Developing an Ultrasonic Acoustic Bat Deterrent System for the Wind Industry

Wind turbines have been shown to cause direct mortality to bat species, with bat deaths documented at wind energy facilities around the world. Building upon insights from nature and a great deal of previous research, NRG Systems developed its Bat Deterrent System to mitigate the wind industry's impact on bats. This white paper provides an overview of the development of this pioneering solution.

Efficacy of Acoustic Deterrence for Bat Occupancy of Highway Structures

In the following white paper, ICF discusses the use of acoustic deterrence to minimize harm to roosting bats at bridges. The paper covers a series of studies performed by ICF biologists for the Georgia Department of Transportation (GDOT) using NRG Systems’ bat deterrent technology.

Exploring How Attenuation Affects NRG Systems’ Bat Deterrent System

Certain environmental conditions contribute to the loss of sound over distance – a phenomenon known as attenuation – which can impact the effective range of the NRG Systems' Bat Deterrent System. 

First European Trial of NRG's Bat Deterrent System Shows Promising Results

In 2019, ENGIE Laborelec conducted the first European trial of NRG’s Bat Deterrent System at a wind plant in Belgium. The promising results are outlined in a white paper available on the company's website. 

Post Calibrating the 40C Anemometer in the SOH Wind Engineering (SOH WE) Wind Tunnel

Two procedures – one simplified, one rigorous – are provided in this white paper, defining the process of evaluating SOH WE post-calibrations of 40C Anemometers initially calibrated at Otech.

Summary of Cup Anemometer Classification - WindSensor P2546A-OPR + P2546C-OPR

Danish Technical University (DTU) Wind Energy Department has classified the WindSensor P2546A-OPR anemometer in compliance with the procedures outlined in IEC 61400-12-1:2005 Annex I.

The "Why?", "What?" and "How?" of Lidar Type Classification

Validation Methodologies for NRG Systems’ Bat Deterrent System

A robust validation study design, carried out prior to Bat Deterrent System installation, can yield statistically reliable results that provide a preview of what success could look like at a wind site. This paper will cover some of the study designs that NRG Systems is aware of, including the benefits and drawbacks of each method.