HES from POWR2 eliminates wet stacking and reduces emission


The new Hybrid Energy System (HES) from POWR2 is able to avoid generator wet stacking while reducing fuel costs, emissions and maintenance requirements.

The POWR2 HES is a portable power supply that integrates with diesel generators to optimize load capacities. The HES features lithium ion battery technology and automatic load level sensing, allowing it to switch power flow as needed between the generator and the HES. This includes using the generator for high loads and stored energy for low loads.

The HES also enables storage and use of alternative energy sources when paired with electricity-producing systems such as solar, wind or hydroelectricity. In addition, it is silent, making it ideal for noise-sensitive jobsites or applications.

“We’ve been monitoring the trends and issues brought on by Tier 4 regulations in the energy market,” said Toby Nunn, POWR2 operations director. “With the measures taken in Tier 4 Final engines to meet emission regulations, they have become even more susceptible to the dangers of wet stacking.”

POWR2 has found a way to eliminate low load wet stacking that occurs in generators, while reducing carbon dioxide emissions, which goes beyond Tier 4 Final regulations.

While load banks installed on generators address the problem of wet stacking, they increase carbon dioxide emissions and fuel costs. If set to provide power half of the time, HES can boost a generator’s life significantly, according to POWR2. The reduced generator use also lowers fuel costs by as much as 80 per cent.

“With our knowledge and involvement in the rental market, we feel this solution has tremendous potential for our partners in rental who need to maximize equipment utilization, reduce downtime and be sensitive to their customer’s noise restrictions,” Nunn said.

Customers control the operation of the diesel generator and POWR2 power supply based on the needs and jobsite parameters by selecting from three run modes on the HES. One of the modes is the timer, which allows operators to set the generator for constant running at times when power usage is highest. Lower power draw periods will be programmed for HES operation, running the site on stored energy.

When the situation permits, the HES can be set as the primary power source and the generator will only kick in to recharge the unit’s battery. The final mode, load sensing, enables the system to monitor power levels and automatically switch between generator and HES as the power draw demands.

“The HES offers power rental companies a variety of benefits,” Nunn said. “From cleaner operations and reduced maintenance to lower noise levels and increased versatility of the product.”

POWR2 offers six HES models with outputs from 3.7 kVA to 60 kVA and storage ranges from 7.5 kWh to 120 kWh.

RELATED: Chicago Pneumatic debuts new Tier 4 Final portable compressor

All models feature POWR2’s Node Energy Control Module 15 cm touch screen. Node retrieves data from all connected devices including inverters, batteries, diesel gensets and PV. The system displays the information on the screen and uses it to inform which energy source to use and which loads to prioritize.

All models include forklift pockets, lift and drag skid lift points. POWR2 also includes temperature control features on all models.