The property management notified us of a two-hour power outage tomorrow.
Tips
usage
停电 works as both a verb (停电了, 'the power went out') and a noun (一次停电, 'a power outage'). The pattern 停X is productive: 停水 (tíngshuǐ, 'water outage'), 停气 (tíngqì, 'gas outage'), 停网 (tíngwǎng, 'internet outage').