I.
The liability underlying this insurance dispute emanates from environmental contamination caused by
Between 1953 and 1969, Century issued eight excess liability insurance policies to LILCO covering property damage. For the purposes of this appeal, it is undisputed that
KeySpan eventually commenced this action, seeking a declaration of coverage and determination of liability owed under a
Supreme Court partially granted Century's motion, holding that liability should be allocated to KeySpan for the years in which it elected to self-insure and in which the legislature mandated a pollution exclusion in liability policies (
II.
Before stating and addressing the parties' arguments, we must place them in context. As we posited in our most recent foray into an insurance allocation dispute, long-tail claims present unique difficulties (see Matter of Viking Pump, Inc.,
In general, two primary methods of allocation are used by the courts to apportion liability across multiple policy periods: all sums and proration. All sums allocation "permits the insured to collect its total liability ... under any policy in effect during the periods that the damage occurred, up to the policy limits" (
In New York, we have not adopted a strict pro rata or all sums allocation rule. Rather, the method of allocation is governed foremost by the particular language of the relevant insurance policy (see Matter of Viking Pump,
We subsequently distinguished the policy language in Consolidated Edison from that presented in Matter of Viking Pump, Inc. and held, in the latter case, that the presence of noncumulation and prior insurance provisions "plainly contemplate that multiple successive insurance policies can indemnify the insured for the same loss or occurrence" and, therefore, require all sums allocation (
Where policy language indicates allocation by the pro rata method and gaps in coverage exist, the question arises as to which party-the insurer or the policyholder-bears the risk for periods of time in which no applicable coverage was in place. While "most courts engaging in pro rata allocation require the policyholder to participate in the allocation to some extent" with respect to periods of non-coverage ( Boston Gas Co. v. Century Indem. Co.,
When using a pro rata time-on-the-risk allocation, a number of jurisdictions have declined to place the policyholder "on the risk" if insurance was unavailable. These jurisdictions recognize the "unavailability rule" or, stated differently, an "unavailability exception" to the general rule that a policyholder is self-insured and on the risk for periods of time when insurance coverage was not obtained (see R.T. Vanderbilt Co., Inc. v. Hartford Acc. and Indem. Co.,
Other courts have rejected the unavailability rule. These courts have held that a policyholder is on the risk for periods of non-coverage, regardless of whether the lack of insurance coverage was attributable to a voluntary decision to self-insure or to an inability to obtain coverage (see Boston Gas Co.,
III.
KeySpan does not dispute that it bears the risk for those years in which property damage insurance was available to, but not purchased by, LILCO and it was, therefore, voluntarily self-insured. KeySpan argues, however, that it should be responsible only for those years in which insurance was available in the marketplace. Thus, Keyspan-supported by various amici-urges us to adopt the unavailability rule and hold that, in a pro rata time-on-the-risk allocation, liability should not be allocated to the policyholder for years in which insurance was unobtainable, either because it had not yet been offered by insurers or because the industry had adopted a pollution exclusion.
In response, Century argues that the unavailability rule is inconsistent with the policy language that mandates pro rata allocation in the first instance. Century further contends that the imposition of liability on an insurer for damages resulting from occurrences outside the policy period would contravene the very premise underlying pro rata allocation. We agree.
"It is well established that[,] '[i]n determining a dispute over insurance coverage, we first look to the language of the policy' " ( Roman Catholic Diocese of Brooklyn,
It follows from our holding in Consolidated Edison that the unavailability rule is inconsistent with the contract language that provides the foundation for the pro rata approach-namely, the "during the policy period" limitation-and that to allocate risk to the insurer for years outside the policy period would be to ignore the very premise underlying pro rata allocation (
Further, application of the unavailability rule to an insurance policy that directs pro rata allocation, either expressly or under our interpretation in Consolidated Edison,
To
In Sybron Transition Corp., the Seventh Circuit reasoned that "[t]he whole idea of a time-on-the-risk calculation is that any given insurer's share reflects the ratio of its coverage (and thus the premiums it collected) to the total risk. The full risk is not affected by whether insurance is available later" (
Similarly, here, we concur with the Appellate Division that "the spreading of industry risk through insurance is accomplished through the setting and payment of premiums for insurance, consistent with the parties' forward[-]looking assessment of what that risk might entail," and that, "[i]n the absence of a contract requiring such action, spreading risk should not by itself serve as a legal basis for providing free insurance to an insured" (
Ultimately, because "the very essence of pro rata allocation is that the insurance policy language limits indemnification to losses and occurrences during the policy period" ( Matter of Viking Pump,
Accordingly, the order of the Appellate Division should be affirmed, with costs, and the certified question answered in the affirmative.
Order affirmed, with costs, and certified question answered in the affirmative.
Judges Rivera, Fahey, Wilson and Feinman concur. Chief Judge DiFiore and Judge Garcia took no part.
Notes
KeySpan's alternative argument that certain "other insurance" clauses in the policies constitute noncumulation clauses and, therefore, mandate all sums allocation, is not properly before us on this appeal.
