Tag Archives: Rosh Pinah

Trevali weighing battery-electric vehicle use in expanded Rosh Pinah plan

Trevali Mining has flagged the potential use of battery-electric vehicles at its Rosh Pinah underground zinc-lead-silver mine, in Namibia, as one route to further reduce the operation’s greenhouse gas emissions if an expansion of throughput goes ahead.

Writing in its just-released 2020 Sustainability Report, the company said the Rosh Pinah expansion, known as RP2.0, could lead to an increase in the underground mining fleet and, with that, the potential use of battery-electric vehicles.

In addition, the company said it was considering increasing the capacity of the underground mobile fleet from 30 t to 60 t trucks for more efficient transportation of material to surface, resulting in better fuel efficiency and reduced ventilation load. The company was also looking to use solar power for at least 30% of the annual energy consumption as a starting point – an aspect the company is close to achieving after signing a a 15-year renewable Power Purchase Agreement with Emerging Markets Energy Services Company (EMESCO) for the supply of solar power to Rosh Pinah in April.

In 2020, Trevali published a positive prefeasibility study on RP2.0, which is projected to increase the throughput of the mine from 700,000 t/y to 1.3 Mt/y, with an 11-year life of mine, post-expansion.

Trevali intended to achieve this through the modification of the processing plant, construction of a paste fill plant, and development of a dedicated portal and ramp to the WF3 deposit.

A feasibility study for the RP2.0 project is underway and is expected to be completed in the second half of this year, with an investment decision thereafter. If approved, construction could commence in the March quarter of 2022, with commercial production potential achieved by the June quarter of 2024, Trevali said.

Trevali taps EMESCO for solar power contract at Rosh Pinah mine

Trevali Mining has entered into a 15-year renewable Power Purchase Agreement with Emerging Markets Energy Services Company (EMESCO) for the supply of solar power to its Rosh Pinah zinc-lead-silver mine in Namibia.

Trevali has committed to achieving an overall greenhouse gas emission reduction target of 25% by 2025 from its 2018 baseline, with the PPA anticipated to deliver 30% of Rosh Pinah’s power requirements during the life of the agreement and reduce GHG emissions at the company level by 6%.

EMESCO will be responsible for the design, permitting, financing and implementation of a solar energy system on a neighbouring property at no cost to Trevali. EMESCO will then sell the power generated to Trevali at a fixed rate that is expected to reduce energy costs by 18% over the 15-year term of the agreement.

EMESCO was chosen based on a variety of factors, including expertise in the field of renewable energy, an understanding of the scope of work required, the ability to execute and deliver on Trevali’s requirements, and pricing, the miner said.

If Trevali makes a positive investment decision on the RP2.0 expansion project, which could see output rise to 3,600 t/d from 2,000 t/d, EMESCO will increase the delivery of power to Rosh Pinah to remain at 30% of the mine’s annual energy consumption as regulated by the Modified Single Buyer framework in Namibia, it added.

Ricus Grimbeek, President & CEO, said: “Our sustainability program commits to significant reductions in GHG emissions, and with the signing of this agreement with EMESCO we have taken a major step towards delivering on our commitment by securing renewable energy while also reducing our expected energy costs.

“The agreement with EMESCO has been designed to scale with the output of the mine so that when we are ready to make the decision to build the RP2.0 Expansion project, the delivery of power will increase to match our requirements.

“We are extremely excited by this partnership at Rosh Pinah and continue to study ways to reduce Trevali’s GHG emissions and deliver on this and our other sustainability targets.”