Electrical Output (100%) 70 kWe Thermal Output (100%) 109 kWth


Electrical Efficiency 34.3% Thermal Efficiency 53.4% Total Efficiency 88%

Gas Consumption (kW)


Dimensions L x W x H (mm)

3300 x 1000 x 1900

NOx emissions, Mg/m3


Optional Catalyst

Yes (<50mg/m3) via a 3 way CAT

Sound rating dB @1 Meter



Circa £110,000

The Powerbox PB70 SNG Combined Heat & Power unit generates 70 kW(e) for use on site with 109kW(th) thermal energy being available for space heating and domestic hot water pre-heat & full production.

The PB70SNG is a modulating CHP unit that will adjust its power output automatically dependent on the buildings thermal load demand (<36kW(e) +/- 3%)

The PB70SNG is designed and manufactured by Helec with build partners in the UK and Czech Republic factories enabling this CHP unit to be customised specifically to the clients’ needs and expectations when plant room floor space may be at a premium, extra low NOx emissions are required and low sound power levels require additional sound absorption to run as quiet as practically possible in sensitive areas.

Fuel type is Natural Gas with LPG & Biogas being available if required.

Typical applications where Powerbox CHP units are well suited and can be found are in hotel plant rooms, residential district housing schemes energy centres, leisure centres and assisted living residential care home. (see case studies)