A L Challis Ltd v British Gas Trading Ltd

Commercial contracts are construed by considering their language, the factual matrix reasonably available to the parties, the agreement as a whole and its commercial consequences. The process is iterative and does not require an ambiguity before the factual matrix may be considered.

Where a contract distinguishes between carbon savings and credits, a payment expressed as a fixed amount based on carbon savings is not ordinarily calculated by reference to a later discretionary uplift in credits. The court will give weight to invoicing, cap and renegotiation provisions which assume that the payment can be calculated during performance. A construction which creates substantial uncertainty as to the price or cap is unlikely to reflect the parties’ commercial intention.

The claimant supplied water-saving devices to the defendant under two agreements connected with the Carbon Emissions Reduction Target scheme. The agreements provided for payments calculated by reference to carbon savings attributed to the products. Under the scheme, qualifying innovative products could attract a 50% market transformation uplift when the energy supplier claimed credits from Ofgem.

The claimant sought an additional 50% payment for the carbon savings on which the defendant obtained the uplift. The defendant contended that the agreements provided for a fixed price based on the agreed carbon saving per widget, irrespective of the credits ultimately claimed. The central issue was the true construction of the payment provisions.

1. Construction principles. The court applied the established principles of commercial contractual construction. The language, factual matrix and commercial consequences were to be considered together. Construction was an iterative process involving comparison of rival meanings against the other provisions of the agreements and their consequences.
2. Carbon savings and credits. The agreements deliberately distinguished between carbon savings and the defined term Credits. The payment provisions referred to carbon savings and used a fixed price per tonne of carbon dioxide attributable to the relevant consumer group. They did not use the defined term Credits in the critical pricing provisions. The agreed figure of 1.018 tonnes per widget therefore represented the carbon saving on which the fixed payment was calculated.
3. Market transformation uplift. The 50% uplift was an additional credit towards British Gas’s target, rather than a carbon saving achieved by the widget. The agreements contemplated that British Gas might claim the uplift only for some widgets, and that the relevant decision would be made after the scheme period. They contained no workable mechanism for calculating or invoicing a later uplift, particularly given the different agreements, consumer groups, marketing channels and payment bands.
4. Commercial structure. The weekly or monthly invoicing provisions, aggregate payment caps and extension provisions all assumed that the payment could be calculated and monitored as widgets were supplied. Including a later discretionary uplift would undermine that commercial certainty. Clause 6.4 dealt with a recalculation of the carbon saving by Ofgem, not with the fixed 50% uplift.
5. The price payable was therefore the fixed price based on 1.018 tonnes of carbon dioxide saved for each widget, without any market transformation uplift. The claimant’s claim failed.

Not stated in the judgment.