Ready for this week's roundup? Let's go!

Unilever AU follows in the footsteps of confectionery giant Mars as it declares 100% renewable energy for its Australian operations in two years; Port Macquarie Base Hospital is about to go solar with the largest hospital solar power installation; Two of WA's biggest players in the gas-propelled economy are looking into renewable energy; And energy spills are flooding the electricity grid, causing major concerns.