Proton doesn’t have solar-powered cars (yet) but it is making use of sunshine in another way – to power its factory in Tg. Malim, Perak. The initiative is one of the ways the Malaysian carmaker is helping meet the government’s target of becoming a carbon-neutral nation by 2050. The green initiative will reduce CO2 (carbon dioxide) emissions by 11,536 tonnes a year, helping to address climate-change by lowering the generation of the global-warming gas.
Additionally, generating electricity from solar power also helps Proton save money on its electricity costs. The total amount generated is 12 MWp (MegaWatt peak) which is able to cover up to 25% of the electricity needs of the factory. Which began operations in 2003.
The solar panels are installed over two areas – one area is on the roofs of the manufacturing buildings and the other is a newly constructed covered carpark. The latter has the largest installation of solar panels over a parking lot in Malaysia and covers a land area of 23.4 acres (slightly more than 13 football fields).
There are covered spaces for up to 2,880 vehicles which are stored prior to being sent to Proton outlets for delivery to customers. At this time, the new vehicles spend a very short time there as there is a backlog of orders so completed vehicles are sent off quickly.
While solar panels are generally the same in function and design, those installed over the carpark are ‘bi-facial’ as the underside of the 20,544 panels can also capture sunshine reflected off the roofs of the shiny vehicles. Obviously, it’s not as much as the direct sunshine from above but it is still enough to make it worthwhile to collect and turn into electricity. The total amount of electricity generated from the carpark is 75% of the total generation.
For now, there is no storage of electricity generated so if there is an unused amount over a certain period, it is sent to the national power grid, for which Proton will be paid. The total savings in electricity costs are calculated to be up to RM5.85 million and in as far as the cost of investment in this solar power project is concerned, Proton did not actually have to invest directly for the installation. The installation was undertaken by Pekat Group and its associate MFP Solar, and Proton is leasing the installation.
Using solar energy as part of a holistic energy-saving plan formulated by Proton in 2015 with the launch of the Proton Green Wheel and Green Policy. This has 5 phases which started with implementing an Energy Management System in its production plants and head office to collect and measure usage data. Following 2 years of energy data gathering and analysis, the company established energy baselines across its plants and offices which provided an insight into areas to reduce energy consumption.
Phase 2 consisted of Energy Efficiency measures where a number of energy-saving projects were implemented. These ranged from switching to LED lighting and chiller replacement with magnetic chillers, to using a master compressor unit to synchronize the compressed air supply to match real-time demand at each production shop.
This was followed by Phase 3, which focussed on Waste and Water Management. To achieve its aims, Proton implemented a system where recycled water was reused for the compressor cooling tower and to top up water for hydrant water tanks at the Tanjong Malim plant.
Phase 4 is the adoption of renewable energy via the solar energy plant while Phase 5 aims to digitize all the energy data on a cloud server to introduce AI and Big Data Analytics technology to provide the company’s energy managers with energy consumption predictions and prescriptive measures to reduce energy consumption across all plants and office facilities.
Over a 5-year period (2015 – 2020), these initiatives have achieved an energy bill savings of RM20 million or equivalent to 55,000 MWh savings, with over 40,000 tonnes of CO2 emission reduction.
