Projects Energy Monitors & Moisture Meters KSEC has made energy monitors and moisture meters available to borrow by the general public from Tralee and Killorglin libraries and through the inter-library service. All you need to borrow them is be a member of the library. Moisture meters are used to measure the percentage of water in a given substance. It is a simple and effective way to check the moisture content for your firewood. The less moisture that is in your wood, the more efficiently it will burn and there will be less cleaning for your chimney and stove also. It is recommended that it should be below 18% for burning in your stove/fire. Energy meters can be used to accurately measure the energy consumption of any electrical appliance. You can then identify what appliances are high energy use and make the necessary energy savings by limiting consumption.