Frequently asked questions

Enso Energy

Enso CoGen

  • No, all development costs are paid by us. What’s more, there is no commitment from you until contracts are signed.

  • We usually install gas reciprocating engines either as a single containerised unit between 200kW up to 10MW or multiple engines, depending on site requirements and space available. Combined Heat & Power (CHP) converts a single fuel into both electricity and heat in a single process at the point of use.

  • For simplicity, we usually install our equipment outside as a containerised solution. Depending on the design up to 1MW can usually be fitted into a 20ft shipping container, and 2MW in a 40ft container. We prefer to install close to existing gas and electricity connections, but it is not essential.

  • A Power Purchase Agreement (PPA) is a form of contract where electricity and/or heat is generated on site and sold directly by the generator (Enso CoGen) and the consumer (you). You simply pay for the power and heat used on a p/kWh basis. Private wire simply means we supply your site directly, without going out to the wider distribution network.

  • We typically install power generation from 200kW up to 10MW. We would consider smaller projects if there are multiple sites or the ability to export power to the grid, so please get in touch regardless of how much power you use currently.

  • No, a PPA is a type of service agreement, not a lease or loan. We retain full ownership and responsibility for the equipment, and it sits on our balance sheet. Think of it as us building a mini power station next to your site and selling you power – it works more like a supply agreement from an energy company.

  • The PPA price you pay covers everything, there are no hidden costs. We pay for all the fuel, carbon taxes, maintenance, connection and capital costs, you simply pay for the energy you use. The only additional costs you may incur will be your legal costs associated with the agreement.

  • The PPA Price is usually fixed for the full term, but there are other options if you prefer. For example, we can offer a lower initial rate with fixed inflation applied to future years, or track the grid electricity price.

  • The standard PPA offer is for a 5 year fixed term, although up to 10 years is possible. At the end of the initial term we would make you a renewal PPA offer for a further 3-5 years. If you choose not to accept the offer, we will remove all equipment and you revert to purchasing all your power from the grid as before.

  • Yes, we will synchronise our equipment with the grid, you will need to retain your grid connection for backup and for times when our equipment is undergoing routine maintenance.

  • Yes, we will guarantee that our equipment is available for a minimum of 8000 hours per year and capable of generating at the agreed output during this time. We will pay compensation if we cannot meet our commitments for any reason.

  • This is unlikely – the inclusion of various non-commodity costs (green taxes and so on) means grid electricity prices are expected to increase significantly, even if wholesale energy prices fall. If you wish to mitigate this risk however, it is possible to tie the PPA price to energy price inflation instead of fixing for the full term.

  • No, we can install gas generation to supply electricity only if required and the electricity PPA price will be similar to what we would offer for a full CHP system. However, the more waste heat we can capture and utilise on site, the higher overall efficiency we can achieve. Higher efficiency means lower CO2 and bigger savings.

  • Yes, there would be a minimum offtake as part of the agreement. This is because unlike a traditional energy supplier, you are our one and only customer and we cannot resell the generated power elsewhere. To reduce risk of overcommitting and incurring penalties, we tend to size the generation equipment to allow for potential reduction in future energy consumption. Minimum offtake and potential penalties would be outlined in full once feasibility and design work is completed.

  • Depending on complexity of the system, it can take between 3 and 12 months between placing the order and commissioning. You only pay once everything is working and we are supplying you with energy, so it is in our interest to get you up and running as quickly as possible.

  • No, not necessarily. We can install Liquified Natural Gas (LNG) tanks to supply our gas generators, which bypasses the need for mains gas. PPA prices are slightly higher to cover additional costs, but will still be very competitive vs grid electricity. If you already have mains gas, we may need to install a new supply or upgrade your existing supply. All associated costs would be covered by Enso CoGen as part of the PPA.

  • In general, gas is a cleaner source of power than many other types of generation, however the relevant CO2 output is dependent on how much heat can be captured and used on site. It is possible to achieve up to 90% overall efficiency and reduce CO2 output by up to 30% when compared to traditional grid electricity.

  • Normally our equipment is synchronised with the grid, so if the grid goes down then so does the generation equipment. If you would like gas generation to provide full backup however, this is possible by designing the plant to operate in ‘Island mode’ effectively synchronising with site demand rather than the grid. Furthermore, by oversizing and installing multiple engines it is possible to operate completely off grid. Costs and therefore the PPA offer will be higher so you will need to assess if this is worth it.

  • We can supply baseload power for minimum of 8000 hours per year. This effectively acts as additional capacity and reduces the load on the grid. However, we cannot guarantee availability for longer than 8000 hours, so you would be exposed to potential penalties at other times unless site demand is reduced.