While I am at it...they can be used with heat pumps too. Gaterra...

While I am at it...they can be used with heat pumps too. Gaterra CEO uses one at home to charge car.  They are rather flexible little things.

I had hoped that the UK policy for new developments in 2016 would have yielded something for CFCL by now. I was actually looking for something Oct-Dec last year; but, better late than never

Zero Carbon Policy

The policy, as set out today, requires all new homes from 2016 to mitigate, through various measures, all the carbon emissions produced on-site as a result of the regulated energy use. This includes energy used to provide space heating and cooling, hot water and fixed lighting, as outlined in Part L1A of the Building Regulations. Emissions resulting from cooking and ‘plug-in’ appliances such as computers and televisions are not being addressed as part of this policy.
This policy is well aligned with European Policy, specifically the Energy Performance of Buildings Directive (recast) which requires all new buildings to be nearly Zero Energy Buildings from 2020 (nZEB), as described in Article 2 of the EPBD.
There are three core requirements which must all be met for a home to qualify as zero carbon:

1. The fabric performance must, at a minimum, comply with the defined standard known as the Fabric Energy Efficiency Standard (FEES) and
2. Any CO2 emissions that remain after consideration of heating, cooling, fixed lighting and ventilation, must be less than or equal to the Carbon Compliance limit established for zero carbon homes, and
3. Any remaining CO2 emissions, from regulated energy sources (after requirements 1 and 2 have been met), must be reduced to zero.

Requirement 3 may be met by either deliberately ‘over performing’ on requirements 1 and 2 so that there are no remaining emissions, or by investing in Allowable Solutions.   

https://www.gov.uk/government/uploa...tion_-_Next_Steps_to_Zero_Carbon_H__FINAL.pdf