Green Energy for Real Estate: Impact, Evidence and Options
Updated: 3 days ago
Renewable energy is an important part of reducing CO₂ emissions. For professional real estate portfolios, however, green energy products vary considerably in the quality of their evidence, their costs and their additional climate impact. Property owners, asset managers and property managers should therefore assess which product fits their objectives and requirements.
Green Electricity: Separate Origin from Impact
For electricity supplied through the grid, renewable origin is evidenced contractually. Guarantees of origin document that a corresponding amount of electricity was generated from renewable sources. They do not determine which electricity physically reaches a building.
A guarantee of origin alone does not demonstrate additional renewable capacity. Assessment therefore needs to consider the generation source, product criteria and verifiable use of certificates. The German Environment Agency explains guarantees of origin and electricity disclosure (in German).
Compare Product Quality and Costs Transparently
Quality labels and certifications can provide guidance. Depending on the standard, they may consider generation technology, plant age or additional support criteria. Regional origin is a separate characteristic and does not replace assessment of the product’s other qualities.
Specific origin or quality requirements may involve additional costs. Compare actual offers: which attributes are contractually assured, how are they evidenced and what value do they provide for the portfolio? A green product does not automatically satisfy regulatory or ESG requirements; the applicable criteria need to be checked separately.
PPAs: Structure Long-Term Supply Around Specific Assets
Power purchase agreements (PPAs) link electricity procurement contractually to identified generating assets. They can secure long-term prices for agreed volumes or price components and provide greater transparency over origin. Their impact needs to be assessed project by project: a contract may enable a new plant to be built or support the continued operation of an existing one.
Generation profiles and consumption do not always match. Residual supply, volume deviations and other contractual costs therefore need to be assessed. dena’s Green PPA pricing guide (in German) explains these cost and risk factors. For larger portfolios, a tailored PPA structure may be appropriate where contract duration, demand and risk capacity align.
Gas: Distinguish Biogenic Products from Offsetting
Biogenic gases and natural gas products with carbon offsets are different approaches. Biogenic products require assessment of feedstocks, production, the supplied biogenic share and supporting evidence. Prices, availability and emissions impacts can vary considerably.
With offsetting alone, the fossil fuel remains in use; climate projects are intended to compensate for emissions elsewhere. This does not reduce emissions at the building. The Energy Efficiency and Climate Protection Networks initiative’s factsheet (in German) explains these distinctions. Broad claims of climate neutrality are therefore not a sufficient basis for a procurement decision.
Select the Right Option for the Portfolio
Start with consumption, procurement constraints and specific sustainability objectives. Then assess origin, additional benefits, evidence, costs and contractual risks together. Rational energy procurement provides a structured approach to this decision.
NeoBid supports the assessment, selection and implementation of suitable energy products, from green electricity tariffs to long-term PPA structures. Transparent market comparisons help align commercial requirements with sustainability objectives.
