Frequently Asked Questions
CRESS · Grid Connection and Technical Requirements
How are the BESS and GEP connected to the grid? Are they DC-connected and share one grid connection point and metering point connected? If not, do the BESS and GEP have separate grid connections and metering points?
Will the GSO require the BESS to be capable of providing grid forming and/or black start capability as part of this section 8.16 requirement? What other functions/capabilities shall the GSO be testing the BESS for in connection to this section?
Refer to the following:
i. PV Export = Solar Farm Export Capacity in MWac.
ii.BESS Power = energy storage power capacity in MWac.
What is the Injection Capacity to the Grid? Is it PV Export, BESS Power or other
values in between?
Due to potential price, financing cost, supply chain, and other related project risks, installed BESS prices may become higher relative to the regulator’s financial models/economic studies used to develop Guidelines for CRESS. As such, the hard constraint on the sizing of BESS in section 8.14(a) may be a cause for the Levelized Cost of Energy (LCOE) of the combined GEP and BESS energy solution for potential GCs to be potentially higher than the current benchmark price received from the TNB. Would the regulators be open to considering relaxing the rule or allowing REDs to determine the financially feasible size of BESS to ensure that competitive pricing is achievable and investors get acceptable returns on investment?
With reference to section 8.10, in the event of a withdrawal of Green Consumer, can the RED reapply to participate in CRESS if they found a new Green Consumer to replace the one who had withdrawn? Will that new Green Consumer need to be a new electricity user?
What is the AC/DC ratio acceptable for the scheme?
Are there any limitations to the interconnection (export capacity) other than the PSS? i.e. Is the interconnection capacity set at 50% of the plant AC capacity?
What is the AC/DC ratio acceptable for the scheme?