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Renewable Energy at PTL

Biomass Systems

Heating: Biomass chip boiler

Cooling: Adsorption chiller

Local biomass expert Mark Froling installed the library HVAC system. The heating system runs off locally sourced wood chips and  the boiler also powers the chiller-- making our system run on 100% renewable energy. To find out more about how exactly a wood boiler supplies cooling- check out this fantastic article here.

The HVAC system also has UVC treatment in the ductwork.

The entire HVAC plant is located in the back of another library building, the Kyes-Sage House, which has a small used bookshop in the front. This allowed us to maximize every square foot availble in the new library.

Thank you to our partners at Froling Energy for their generous contributions to help make this system a reality. We cannot say a loud enough thank you to the Froling team!

We also thank the Public Utilities Commission for their generous grant which made the adsorption system in this project possible.

KS House with Silo

Solar Power

View the stats on our solar production,  both today and across the array's lifetime, click here.

System size:   71.6 kilowatts (217 solar panels)
System output:  75,520 kilowatt-hours/year
CO₂ reduction:  79,900 pounds/year

Comprised of 217 solar panels on the rooftop of our library building, this system will generate roughly 75,520 kilowatt-hours (kWhs) of electricity every year, and has the potential to save our library upwards of $300,000 over the lifetime of the system.

Additionally, the environmental benefit of producing our own local, clean power will be keeping 79,900 lbs of carbon pollution out of the atmosphere, or offsetting the equivalent of over 134,500 miles driven in a gas-powered car every year.

Thank you to our partners at Revision Energy for helping us make solar part of the 2021 PTL renovation!

PTL panels