Still on the infrastructure level, your expensive computers and peripherals aren't worth anything if they don't have electricity to run on. Apart from power cuts that interrupt your work, surges and fluctuations will greatly increase the chances of hardware failure. Invest in a solid, reliable UPS that can filter your line power. If necessary in your area, consider an inverter for backup as well. Both devices should have more than enough capacity to meet your needs and keep the power flowing for hours.