Over the last few weeks we have looked at the first two tiers of the London Plan’s Energy hierarchy, Be Lean and Be Clean. This week we’ll review the final tier, Be Green. The London Plan assumes that 20% of a development’s carbon dioxide emissions will be offset by renewable energy generation. A bold statement but one that often has some flexibility, provided the overall carbon reduction is greater than 35%. As always, dialogue with the Local Planning Authority is vital to establish any flexibility. A developer will need to review the following renewable technologies to establish which is best suited to the development, how they will operate in conjunction with the proposed heating strategy and what would be required to meet the 35% target.
The pros and cons of each technology are listed below and you will often find yourself limited in the systems you can install due to site constraints. PV Panels tend to be the most common option however shading issues and available roof space can be limiting factors. The technology you choose to go with will often depend heavily on site constraints and the strategy you've adopted for the Be Lean and Be Clean stages. You may find that the renewable energy contribution you’re required to provide is relatively small, but you’ll still need to review these requirements and ascertain the most suitable technology for your build. If however it is simply not possible for you to achieve the 35% reduction, you may well be asked to make a carbon offsetting financial contribution. More on that in our next blog! Join us in London on the 29th October for Free Part L and London Plan CPD.