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metering customer. When net-metering customers under TOU tariffs are net generators
during any discrete TOU period, the net kWh produced are valued at the same price per
kWh as the utility would charge for retail kWh sales during that same time of use period.
Credits for NEG may be used to offset other charges assessed by the electricity
provider. Each utility must provide net metering and dual metering until the load of its
net-metering customers and dual-metering customers equals 1% of the total peak
demand supplied by the utility during the previous year. The number of new eligible
customers with generators that have a nameplate rating of 40 kW or less is limited to
200 total new billing accounts for Ameren Companies, ComEd and MidAmerican for the
period of April 1, 2008, through March 31, 2009. Utilities are directed to establish an
open enrollment period during the first month that net metering is offered. If applications
during the open enrollment period exceed the limits described above, enrollment priority
will be determined by lottery. Utilities may initially give preference to customers already
enrolled in net billing or similar programs at their discretion. Subsequent applications will
be addressed on a first-come, first-served basis.
* Illinois allows dual metering for systems greater than 40 kW but not greater than two
megawatts (MW), although the customer must pay for the metering equipment, and
nonresidential customers must pay for "all taxes, fees and utility delivery charges" for the
gross amount of electricity delivered by the utility. As an economic incentive, dual
metering is generally less favorable to customers than net metering.
Renewable Energy Portfolio
Illinois enacted S.B. 680 in August 2007, requiring investor-owned utilities in Illinois to
begin offering net metering by April 1, 2008. In May 2008 the Illinois Commerce
Commission (ICC) adopted final rules for net metering, effective May 15, 2008.
In Illinois, net metering is available to electric customers that generate electricity using
solar energy, wind energy, dedicated energy crops, anaerobic digestion of livestock or
food processing waste, hydropower, and fuel cells and micro turbines powered by
renewable fuels. Systems up to 40 kilowatts (kW) in capacity that are intended primarily
to offset the customer's own electrical requirements are eligible.* While Illinois's investorowned
utilities and alternative retail electricity suppliers must offer net metering, the
state's municipal utilities and electric cooperatives are generally not required to do so.
For residential customers, net metering is "typically" accomplished through use of a
single, bi-directional meter. For nonresidential customers, net metering is "typically"
accomplished through the use of a dual meter. Dual metering is required for
nonresidential customers with systems greater than 40 kW but not greater than 2 MW.
The utility must provide the necessary metering equipment for systems up to 40 kW in
capacity, while customers with systems greater than 40 kW but less than 2 MW must
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