Wood and coal are becoming important alternative
heat sources for greenhouses. Table 8–6 on the
opposite page compares the costs of various fuels
based on their heating equivalents as expressed in
price per MBtu. To use this chart, draw a vertical line
through the price of the fuel being considered to the
Heating Equipment Cost line, which shows the price
per MBtu. For example, fuel oil at $1.00/gal. has an
equivalent fuel cost of $9.80/MBt