Lewes MP Maria Caulfield visited the town's electricity substation to launch the final stages of a £2 million investment in local power supplies.
Her visit today took her behind the scenes at UK Power Networks' site which delivers electricity to over 36,000 homes, schools and businesses across the Lewes area.
Ms Caulfield cut the ribbon on a new electricity transformer, part of a £600 million investment the company will make in its network in 2018.
Engineers have now connected the second of two new 120-tonne transformers to the network to meet growing demand for electricity from local homes, businesses and schools. The transformer is due to go live in the next few days providing power across a wide area.
Ms Caulfield said: "I welcome the £2 million power investment in Lewes. It's great to hear how UK Power Networks is investing in the local electricity network and ensuring reliable electricity supplies for my constituents."
Barry Hatton, director of asset management at UK Power Networks, said: "Alongside key network investments, like this in Lewes, we are developing a smart flexible grid that will enable our customers to take advantage of new technologies like electric vehicles and smart meters. Traditional investment is just one of the ways we deliver a reliable service to our customers, and we are leading the way in rolling out 'flexibility services' that have the potential to provide muchneeded capacity at a lower cost to our customers.
"Mrs Caulfield was interested to hear how local electricity networks, like UK Power Networks, are playing a critical role in the transformation of our energy system. We are the UK's lowest cost distribution network and we want to empower and enable our local communities to benefit from new low carbon technologies and ensure we continue to keep down the costs of delivering electricity."