Waitemata Electric Power Board v King Builders Ltd - [1993] 1 NZLR 312

Local government — Electric power supply authorities — Estoppel — Authority board undercharging in error for supply of electricity — Claim by board to recover electricity charges in excess of monthly accounts rendered to and paid by consumer for a period of seven years — Whether to allow an estoppel would be to enable the board to evade its statutory obligation — Whether admission of an estoppel would nullify statutory provision — Electrical Supply Regulations 1984, regs 28 and 30.

Equity — Estoppel — Electric supply authority board — Undercharging in error for supply of electricity — Rendering of incorrect accounts amounting to representations — Claim for payment of correct amount — Whether consumer relied on representations — Whether consumer had actual or constructive knowledge of error — Whether estoppel created.